From c68a292152d322b2d03f88d7f1d91d6bfa9d22bc Mon Sep 17 00:00:00 2001 From: Daniel Kurtz Date: Mon, 3 Nov 2014 10:53:27 +0800 Subject: [PATCH 1/5] iommu/rockchip: rk3288 iommu driver MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit The rk3288 has several iommus. Each iommu belongs to a single master device. There is one device (ISP) that has two slave iommus, but that case is not yet supported by this driver. At subsys init, the iommu driver registers itself as the iommu driver for the platform bus. The master devices find their slave iommus using the "iommus" field in their devicetree description. Since each slave iommu belongs to exactly one master, their is no additional data needed at probe to associate a slave with its master. An iommu device's power domain, clock and irq are all shared with its master device, and the master device must be careful to attach from the iommu only after powering and clocking it (and leave it powered and clocked before detaching). Because their is no guarantee what the status of the iommu is at probe, and since the driver does not even know if the device is powered, we delay requesting its irq until the master device attaches, at which point we have a guarantee that the device is powered and clocked and we can reset it and disable its interrupt mask. An iommu_domain describes a virtual iova address space. Each iommu_domain has a corresponding page table that lists the mappings from iova to physical address. For the rk3288 iommu, the page table has two levels: The Level 1 "directory_table" has 1024 4-byte dte entries. Each dte points to a level 2 "page_table". Each level 2 page_table has 1024 4-byte pte entries. Each pte points to a 4 KiB page of memory. An iommu_domain is created when a dma_iommu_mapping is created via arm_iommu_create_mapping. Master devices can then attach themselves to this mapping (or attach the mapping to themselves?) by calling arm_iommu_attach_device(). This in turn instructs the iommu driver to write the page table's physical address into the slave iommu's "Directory Table Entry" (DTE) register. In fact multiple master devices, each with their own slave iommu device, can all attach to the same mapping. The iommus for these devices will share the same iommu_domain and therefore point to the same page table. Thus, the iommu domain maintains a list of iommu devices which are attached. This driver relies on the iommu core to ensure that all devices have detached before destroying a domain. v6: - add .add/remove_device() callbacks. - parse platform_device device tree nodes for "iommus" property - store platform device pointer as group iommudata - Check for existence of iommu group instead of relying on a dev_get_drvdata() to return NULL for a NULL device. v7: - fixup some strings. - In rk_iommu_disable_paging() # and % were reversed. Signed-off-by: Daniel Kurtz Signed-off-by: Simon Xue Reviewed-by: Grant Grundler Reviewed-by: Stéphane Marchesin Tested-by: Heiko Stuebner Signed-off-by: Joerg Roedel --- drivers/iommu/Kconfig | 12 + drivers/iommu/Makefile | 1 + drivers/iommu/rockchip-iommu.c | 1038 ++++++++++++++++++++++++++++++++ 3 files changed, 1051 insertions(+) create mode 100644 drivers/iommu/rockchip-iommu.c diff --git a/drivers/iommu/Kconfig b/drivers/iommu/Kconfig index dd5112265cc9f..d0a1261eb1ba7 100644 --- a/drivers/iommu/Kconfig +++ b/drivers/iommu/Kconfig @@ -152,6 +152,18 @@ config OMAP_IOMMU_DEBUG Say N unless you know you need this. +config ROCKCHIP_IOMMU + bool "Rockchip IOMMU Support" + depends on ARCH_ROCKCHIP + select IOMMU_API + select ARM_DMA_USE_IOMMU + help + Support for IOMMUs found on Rockchip rk32xx SOCs. + These IOMMUs allow virtualization of the address space used by most + cores within the multimedia subsystem. + Say Y here if you are using a Rockchip SoC that includes an IOMMU + device. + config TEGRA_IOMMU_GART bool "Tegra GART IOMMU Support" depends on ARCH_TEGRA_2x_SOC diff --git a/drivers/iommu/Makefile b/drivers/iommu/Makefile index 16edef74b8ee6..3e47ef35a35f5 100644 --- a/drivers/iommu/Makefile +++ b/drivers/iommu/Makefile @@ -13,6 +13,7 @@ obj-$(CONFIG_IRQ_REMAP) += intel_irq_remapping.o irq_remapping.o obj-$(CONFIG_OMAP_IOMMU) += omap-iommu.o obj-$(CONFIG_OMAP_IOMMU) += omap-iommu2.o obj-$(CONFIG_OMAP_IOMMU_DEBUG) += omap-iommu-debug.o +obj-$(CONFIG_ROCKCHIP_IOMMU) += rockchip-iommu.o obj-$(CONFIG_TEGRA_IOMMU_GART) += tegra-gart.o obj-$(CONFIG_TEGRA_IOMMU_SMMU) += tegra-smmu.o obj-$(CONFIG_EXYNOS_IOMMU) += exynos-iommu.o diff --git a/drivers/iommu/rockchip-iommu.c b/drivers/iommu/rockchip-iommu.c new file mode 100644 index 0000000000000..b2023af384b9b --- /dev/null +++ b/drivers/iommu/rockchip-iommu.c @@ -0,0 +1,1038 @@ +/* + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License version 2 as + * published by the Free Software Foundation. + */ + +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include + +/** MMU register offsets */ +#define RK_MMU_DTE_ADDR 0x00 /* Directory table address */ +#define RK_MMU_STATUS 0x04 +#define RK_MMU_COMMAND 0x08 +#define RK_MMU_PAGE_FAULT_ADDR 0x0C /* IOVA of last page fault */ +#define RK_MMU_ZAP_ONE_LINE 0x10 /* Shootdown one IOTLB entry */ +#define RK_MMU_INT_RAWSTAT 0x14 /* IRQ status ignoring mask */ +#define RK_MMU_INT_CLEAR 0x18 /* Acknowledge and re-arm irq */ +#define RK_MMU_INT_MASK 0x1C /* IRQ enable */ +#define RK_MMU_INT_STATUS 0x20 /* IRQ status after masking */ +#define RK_MMU_AUTO_GATING 0x24 + +#define DTE_ADDR_DUMMY 0xCAFEBABE +#define FORCE_RESET_TIMEOUT 100 /* ms */ + +/* RK_MMU_STATUS fields */ +#define RK_MMU_STATUS_PAGING_ENABLED BIT(0) +#define RK_MMU_STATUS_PAGE_FAULT_ACTIVE BIT(1) +#define RK_MMU_STATUS_STALL_ACTIVE BIT(2) +#define RK_MMU_STATUS_IDLE BIT(3) +#define RK_MMU_STATUS_REPLAY_BUFFER_EMPTY BIT(4) +#define RK_MMU_STATUS_PAGE_FAULT_IS_WRITE BIT(5) +#define RK_MMU_STATUS_STALL_NOT_ACTIVE BIT(31) + +/* RK_MMU_COMMAND command values */ +#define RK_MMU_CMD_ENABLE_PAGING 0 /* Enable memory translation */ +#define RK_MMU_CMD_DISABLE_PAGING 1 /* Disable memory translation */ +#define RK_MMU_CMD_ENABLE_STALL 2 /* Stall paging to allow other cmds */ +#define RK_MMU_CMD_DISABLE_STALL 3 /* Stop stall re-enables paging */ +#define RK_MMU_CMD_ZAP_CACHE 4 /* Shoot down entire IOTLB */ +#define RK_MMU_CMD_PAGE_FAULT_DONE 5 /* Clear page fault */ +#define RK_MMU_CMD_FORCE_RESET 6 /* Reset all registers */ + +/* RK_MMU_INT_* register fields */ +#define RK_MMU_IRQ_PAGE_FAULT 0x01 /* page fault */ +#define RK_MMU_IRQ_BUS_ERROR 0x02 /* bus read error */ +#define RK_MMU_IRQ_MASK (RK_MMU_IRQ_PAGE_FAULT | RK_MMU_IRQ_BUS_ERROR) + +#define NUM_DT_ENTRIES 1024 +#define NUM_PT_ENTRIES 1024 + +#define SPAGE_ORDER 12 +#define SPAGE_SIZE (1 << SPAGE_ORDER) + + /* + * Support mapping any size that fits in one page table: + * 4 KiB to 4 MiB + */ +#define RK_IOMMU_PGSIZE_BITMAP 0x007ff000 + +#define IOMMU_REG_POLL_COUNT_FAST 1000 + +struct rk_iommu_domain { + struct list_head iommus; + u32 *dt; /* page directory table */ + spinlock_t iommus_lock; /* lock for iommus list */ + spinlock_t dt_lock; /* lock for modifying page directory table */ +}; + +struct rk_iommu { + struct device *dev; + void __iomem *base; + int irq; + struct list_head node; /* entry in rk_iommu_domain.iommus */ + struct iommu_domain *domain; /* domain to which iommu is attached */ +}; + +static inline void rk_table_flush(u32 *va, unsigned int count) +{ + phys_addr_t pa_start = virt_to_phys(va); + phys_addr_t pa_end = virt_to_phys(va + count); + size_t size = pa_end - pa_start; + + __cpuc_flush_dcache_area(va, size); + outer_flush_range(pa_start, pa_end); +} + +/** + * Inspired by _wait_for in intel_drv.h + * This is NOT safe for use in interrupt context. + * + * Note that it's important that we check the condition again after having + * timed out, since the timeout could be due to preemption or similar and + * we've never had a chance to check the condition before the timeout. + */ +#define rk_wait_for(COND, MS) ({ \ + unsigned long timeout__ = jiffies + msecs_to_jiffies(MS) + 1; \ + int ret__ = 0; \ + while (!(COND)) { \ + if (time_after(jiffies, timeout__)) { \ + ret__ = (COND) ? 0 : -ETIMEDOUT; \ + break; \ + } \ + usleep_range(50, 100); \ + } \ + ret__; \ +}) + +/* + * The Rockchip rk3288 iommu uses a 2-level page table. + * The first level is the "Directory Table" (DT). + * The DT consists of 1024 4-byte Directory Table Entries (DTEs), each pointing + * to a "Page Table". + * The second level is the 1024 Page Tables (PT). + * Each PT consists of 1024 4-byte Page Table Entries (PTEs), each pointing to + * a 4 KB page of physical memory. + * + * The DT and each PT fits in a single 4 KB page (4-bytes * 1024 entries). + * Each iommu device has a MMU_DTE_ADDR register that contains the physical + * address of the start of the DT page. + * + * The structure of the page table is as follows: + * + * DT + * MMU_DTE_ADDR -> +-----+ + * | | + * +-----+ PT + * | DTE | -> +-----+ + * +-----+ | | Memory + * | | +-----+ Page + * | | | PTE | -> +-----+ + * +-----+ +-----+ | | + * | | | | + * | | | | + * +-----+ | | + * | | + * | | + * +-----+ + */ + +/* + * Each DTE has a PT address and a valid bit: + * +---------------------+-----------+-+ + * | PT address | Reserved |V| + * +---------------------+-----------+-+ + * 31:12 - PT address (PTs always starts on a 4 KB boundary) + * 11: 1 - Reserved + * 0 - 1 if PT @ PT address is valid + */ +#define RK_DTE_PT_ADDRESS_MASK 0xfffff000 +#define RK_DTE_PT_VALID BIT(0) + +static inline phys_addr_t rk_dte_pt_address(u32 dte) +{ + return (phys_addr_t)dte & RK_DTE_PT_ADDRESS_MASK; +} + +static inline bool rk_dte_is_pt_valid(u32 dte) +{ + return dte & RK_DTE_PT_VALID; +} + +static u32 rk_mk_dte(u32 *pt) +{ + phys_addr_t pt_phys = virt_to_phys(pt); + return (pt_phys & RK_DTE_PT_ADDRESS_MASK) | RK_DTE_PT_VALID; +} + +/* + * Each PTE has a Page address, some flags and a valid bit: + * +---------------------+---+-------+-+ + * | Page address |Rsv| Flags |V| + * +---------------------+---+-------+-+ + * 31:12 - Page address (Pages always start on a 4 KB boundary) + * 11: 9 - Reserved + * 8: 1 - Flags + * 8 - Read allocate - allocate cache space on read misses + * 7 - Read cache - enable cache & prefetch of data + * 6 - Write buffer - enable delaying writes on their way to memory + * 5 - Write allocate - allocate cache space on write misses + * 4 - Write cache - different writes can be merged together + * 3 - Override cache attributes + * if 1, bits 4-8 control cache attributes + * if 0, the system bus defaults are used + * 2 - Writable + * 1 - Readable + * 0 - 1 if Page @ Page address is valid + */ +#define RK_PTE_PAGE_ADDRESS_MASK 0xfffff000 +#define RK_PTE_PAGE_FLAGS_MASK 0x000001fe +#define RK_PTE_PAGE_WRITABLE BIT(2) +#define RK_PTE_PAGE_READABLE BIT(1) +#define RK_PTE_PAGE_VALID BIT(0) + +static inline phys_addr_t rk_pte_page_address(u32 pte) +{ + return (phys_addr_t)pte & RK_PTE_PAGE_ADDRESS_MASK; +} + +static inline bool rk_pte_is_page_valid(u32 pte) +{ + return pte & RK_PTE_PAGE_VALID; +} + +/* TODO: set cache flags per prot IOMMU_CACHE */ +static u32 rk_mk_pte(phys_addr_t page, int prot) +{ + u32 flags = 0; + flags |= (prot & IOMMU_READ) ? RK_PTE_PAGE_READABLE : 0; + flags |= (prot & IOMMU_WRITE) ? RK_PTE_PAGE_WRITABLE : 0; + page &= RK_PTE_PAGE_ADDRESS_MASK; + return page | flags | RK_PTE_PAGE_VALID; +} + +static u32 rk_mk_pte_invalid(u32 pte) +{ + return pte & ~RK_PTE_PAGE_VALID; +} + +/* + * rk3288 iova (IOMMU Virtual Address) format + * 31 22.21 12.11 0 + * +-----------+-----------+-------------+ + * | DTE index | PTE index | Page offset | + * +-----------+-----------+-------------+ + * 31:22 - DTE index - index of DTE in DT + * 21:12 - PTE index - index of PTE in PT @ DTE.pt_address + * 11: 0 - Page offset - offset into page @ PTE.page_address + */ +#define RK_IOVA_DTE_MASK 0xffc00000 +#define RK_IOVA_DTE_SHIFT 22 +#define RK_IOVA_PTE_MASK 0x003ff000 +#define RK_IOVA_PTE_SHIFT 12 +#define RK_IOVA_PAGE_MASK 0x00000fff +#define RK_IOVA_PAGE_SHIFT 0 + +static u32 rk_iova_dte_index(dma_addr_t iova) +{ + return (u32)(iova & RK_IOVA_DTE_MASK) >> RK_IOVA_DTE_SHIFT; +} + +static u32 rk_iova_pte_index(dma_addr_t iova) +{ + return (u32)(iova & RK_IOVA_PTE_MASK) >> RK_IOVA_PTE_SHIFT; +} + +static u32 rk_iova_page_offset(dma_addr_t iova) +{ + return (u32)(iova & RK_IOVA_PAGE_MASK) >> RK_IOVA_PAGE_SHIFT; +} + +static u32 rk_iommu_read(struct rk_iommu *iommu, u32 offset) +{ + return readl(iommu->base + offset); +} + +static void rk_iommu_write(struct rk_iommu *iommu, u32 offset, u32 value) +{ + writel(value, iommu->base + offset); +} + +static void rk_iommu_command(struct rk_iommu *iommu, u32 command) +{ + writel(command, iommu->base + RK_MMU_COMMAND); +} + +static void rk_iommu_zap_lines(struct rk_iommu *iommu, dma_addr_t iova, + size_t size) +{ + dma_addr_t iova_end = iova + size; + /* + * TODO(djkurtz): Figure out when it is more efficient to shootdown the + * entire iotlb rather than iterate over individual iovas. + */ + for (; iova < iova_end; iova += SPAGE_SIZE) + rk_iommu_write(iommu, RK_MMU_ZAP_ONE_LINE, iova); +} + +static bool rk_iommu_is_stall_active(struct rk_iommu *iommu) +{ + return rk_iommu_read(iommu, RK_MMU_STATUS) & RK_MMU_STATUS_STALL_ACTIVE; +} + +static bool rk_iommu_is_paging_enabled(struct rk_iommu *iommu) +{ + return rk_iommu_read(iommu, RK_MMU_STATUS) & + RK_MMU_STATUS_PAGING_ENABLED; +} + +static int rk_iommu_enable_stall(struct rk_iommu *iommu) +{ + int ret; + + if (rk_iommu_is_stall_active(iommu)) + return 0; + + /* Stall can only be enabled if paging is enabled */ + if (!rk_iommu_is_paging_enabled(iommu)) + return 0; + + rk_iommu_command(iommu, RK_MMU_CMD_ENABLE_STALL); + + ret = rk_wait_for(rk_iommu_is_stall_active(iommu), 1); + if (ret) + dev_err(iommu->dev, "Enable stall request timed out, status: %#08x\n", + rk_iommu_read(iommu, RK_MMU_STATUS)); + + return ret; +} + +static int rk_iommu_disable_stall(struct rk_iommu *iommu) +{ + int ret; + + if (!rk_iommu_is_stall_active(iommu)) + return 0; + + rk_iommu_command(iommu, RK_MMU_CMD_DISABLE_STALL); + + ret = rk_wait_for(!rk_iommu_is_stall_active(iommu), 1); + if (ret) + dev_err(iommu->dev, "Disable stall request timed out, status: %#08x\n", + rk_iommu_read(iommu, RK_MMU_STATUS)); + + return ret; +} + +static int rk_iommu_enable_paging(struct rk_iommu *iommu) +{ + int ret; + + if (rk_iommu_is_paging_enabled(iommu)) + return 0; + + rk_iommu_command(iommu, RK_MMU_CMD_ENABLE_PAGING); + + ret = rk_wait_for(rk_iommu_is_paging_enabled(iommu), 1); + if (ret) + dev_err(iommu->dev, "Enable paging request timed out, status: %#08x\n", + rk_iommu_read(iommu, RK_MMU_STATUS)); + + return ret; +} + +static int rk_iommu_disable_paging(struct rk_iommu *iommu) +{ + int ret; + + if (!rk_iommu_is_paging_enabled(iommu)) + return 0; + + rk_iommu_command(iommu, RK_MMU_CMD_DISABLE_PAGING); + + ret = rk_wait_for(!rk_iommu_is_paging_enabled(iommu), 1); + if (ret) + dev_err(iommu->dev, "Disable paging request timed out, status: %#08x\n", + rk_iommu_read(iommu, RK_MMU_STATUS)); + + return ret; +} + +static int rk_iommu_force_reset(struct rk_iommu *iommu) +{ + int ret; + u32 dte_addr; + + /* + * Check if register DTE_ADDR is working by writing DTE_ADDR_DUMMY + * and verifying that upper 5 nybbles are read back. + */ + rk_iommu_write(iommu, RK_MMU_DTE_ADDR, DTE_ADDR_DUMMY); + + dte_addr = rk_iommu_read(iommu, RK_MMU_DTE_ADDR); + if (dte_addr != (DTE_ADDR_DUMMY & RK_DTE_PT_ADDRESS_MASK)) { + dev_err(iommu->dev, "Error during raw reset. MMU_DTE_ADDR is not functioning\n"); + return -EFAULT; + } + + rk_iommu_command(iommu, RK_MMU_CMD_FORCE_RESET); + + ret = rk_wait_for(rk_iommu_read(iommu, RK_MMU_DTE_ADDR) == 0x00000000, + FORCE_RESET_TIMEOUT); + if (ret) + dev_err(iommu->dev, "FORCE_RESET command timed out\n"); + + return ret; +} + +static void log_iova(struct rk_iommu *iommu, dma_addr_t iova) +{ + u32 dte_index, pte_index, page_offset; + u32 mmu_dte_addr; + phys_addr_t mmu_dte_addr_phys, dte_addr_phys; + u32 *dte_addr; + u32 dte; + phys_addr_t pte_addr_phys = 0; + u32 *pte_addr = NULL; + u32 pte = 0; + phys_addr_t page_addr_phys = 0; + u32 page_flags = 0; + + dte_index = rk_iova_dte_index(iova); + pte_index = rk_iova_pte_index(iova); + page_offset = rk_iova_page_offset(iova); + + mmu_dte_addr = rk_iommu_read(iommu, RK_MMU_DTE_ADDR); + mmu_dte_addr_phys = (phys_addr_t)mmu_dte_addr; + + dte_addr_phys = mmu_dte_addr_phys + (4 * dte_index); + dte_addr = phys_to_virt(dte_addr_phys); + dte = *dte_addr; + + if (!rk_dte_is_pt_valid(dte)) + goto print_it; + + pte_addr_phys = rk_dte_pt_address(dte) + (pte_index * 4); + pte_addr = phys_to_virt(pte_addr_phys); + pte = *pte_addr; + + if (!rk_pte_is_page_valid(pte)) + goto print_it; + + page_addr_phys = rk_pte_page_address(pte) + page_offset; + page_flags = pte & RK_PTE_PAGE_FLAGS_MASK; + +print_it: + dev_err(iommu->dev, "iova = %pad: dte_index: %#03x pte_index: %#03x page_offset: %#03x\n", + &iova, dte_index, pte_index, page_offset); + dev_err(iommu->dev, "mmu_dte_addr: %pa dte@%pa: %#08x valid: %u pte@%pa: %#08x valid: %u page@%pa flags: %#03x\n", + &mmu_dte_addr_phys, &dte_addr_phys, dte, + rk_dte_is_pt_valid(dte), &pte_addr_phys, pte, + rk_pte_is_page_valid(pte), &page_addr_phys, page_flags); +} + +static irqreturn_t rk_iommu_irq(int irq, void *dev_id) +{ + struct rk_iommu *iommu = dev_id; + u32 status; + u32 int_status; + dma_addr_t iova; + + int_status = rk_iommu_read(iommu, RK_MMU_INT_STATUS); + if (int_status == 0) + return IRQ_NONE; + + iova = rk_iommu_read(iommu, RK_MMU_PAGE_FAULT_ADDR); + + if (int_status & RK_MMU_IRQ_PAGE_FAULT) { + int flags; + + status = rk_iommu_read(iommu, RK_MMU_STATUS); + flags = (status & RK_MMU_STATUS_PAGE_FAULT_IS_WRITE) ? + IOMMU_FAULT_WRITE : IOMMU_FAULT_READ; + + dev_err(iommu->dev, "Page fault at %pad of type %s\n", + &iova, + (flags == IOMMU_FAULT_WRITE) ? "write" : "read"); + + log_iova(iommu, iova); + + /* + * Report page fault to any installed handlers. + * Ignore the return code, though, since we always zap cache + * and clear the page fault anyway. + */ + if (iommu->domain) + report_iommu_fault(iommu->domain, iommu->dev, iova, + flags); + else + dev_err(iommu->dev, "Page fault while iommu not attached to domain?\n"); + + rk_iommu_command(iommu, RK_MMU_CMD_ZAP_CACHE); + rk_iommu_command(iommu, RK_MMU_CMD_PAGE_FAULT_DONE); + } + + if (int_status & RK_MMU_IRQ_BUS_ERROR) + dev_err(iommu->dev, "BUS_ERROR occurred at %pad\n", &iova); + + if (int_status & ~RK_MMU_IRQ_MASK) + dev_err(iommu->dev, "unexpected int_status: %#08x\n", + int_status); + + rk_iommu_write(iommu, RK_MMU_INT_CLEAR, int_status); + + return IRQ_HANDLED; +} + +static phys_addr_t rk_iommu_iova_to_phys(struct iommu_domain *domain, + dma_addr_t iova) +{ + struct rk_iommu_domain *rk_domain = domain->priv; + unsigned long flags; + phys_addr_t pt_phys, phys = 0; + u32 dte, pte; + u32 *page_table; + + spin_lock_irqsave(&rk_domain->dt_lock, flags); + + dte = rk_domain->dt[rk_iova_dte_index(iova)]; + if (!rk_dte_is_pt_valid(dte)) + goto out; + + pt_phys = rk_dte_pt_address(dte); + page_table = (u32 *)phys_to_virt(pt_phys); + pte = page_table[rk_iova_pte_index(iova)]; + if (!rk_pte_is_page_valid(pte)) + goto out; + + phys = rk_pte_page_address(pte) + rk_iova_page_offset(iova); +out: + spin_unlock_irqrestore(&rk_domain->dt_lock, flags); + + return phys; +} + +static void rk_iommu_zap_iova(struct rk_iommu_domain *rk_domain, + dma_addr_t iova, size_t size) +{ + struct list_head *pos; + unsigned long flags; + + /* shootdown these iova from all iommus using this domain */ + spin_lock_irqsave(&rk_domain->iommus_lock, flags); + list_for_each(pos, &rk_domain->iommus) { + struct rk_iommu *iommu; + iommu = list_entry(pos, struct rk_iommu, node); + rk_iommu_zap_lines(iommu, iova, size); + } + spin_unlock_irqrestore(&rk_domain->iommus_lock, flags); +} + +static u32 *rk_dte_get_page_table(struct rk_iommu_domain *rk_domain, + dma_addr_t iova) +{ + u32 *page_table, *dte_addr; + u32 dte; + phys_addr_t pt_phys; + + assert_spin_locked(&rk_domain->dt_lock); + + dte_addr = &rk_domain->dt[rk_iova_dte_index(iova)]; + dte = *dte_addr; + if (rk_dte_is_pt_valid(dte)) + goto done; + + page_table = (u32 *)get_zeroed_page(GFP_ATOMIC | GFP_DMA32); + if (!page_table) + return ERR_PTR(-ENOMEM); + + dte = rk_mk_dte(page_table); + *dte_addr = dte; + + rk_table_flush(page_table, NUM_PT_ENTRIES); + rk_table_flush(dte_addr, 1); + + /* + * Zap the first iova of newly allocated page table so iommu evicts + * old cached value of new dte from the iotlb. + */ + rk_iommu_zap_iova(rk_domain, iova, SPAGE_SIZE); + +done: + pt_phys = rk_dte_pt_address(dte); + return (u32 *)phys_to_virt(pt_phys); +} + +static size_t rk_iommu_unmap_iova(struct rk_iommu_domain *rk_domain, + u32 *pte_addr, dma_addr_t iova, size_t size) +{ + unsigned int pte_count; + unsigned int pte_total = size / SPAGE_SIZE; + + assert_spin_locked(&rk_domain->dt_lock); + + for (pte_count = 0; pte_count < pte_total; pte_count++) { + u32 pte = pte_addr[pte_count]; + if (!rk_pte_is_page_valid(pte)) + break; + + pte_addr[pte_count] = rk_mk_pte_invalid(pte); + } + + rk_table_flush(pte_addr, pte_count); + + return pte_count * SPAGE_SIZE; +} + +static int rk_iommu_map_iova(struct rk_iommu_domain *rk_domain, u32 *pte_addr, + dma_addr_t iova, phys_addr_t paddr, size_t size, + int prot) +{ + unsigned int pte_count; + unsigned int pte_total = size / SPAGE_SIZE; + phys_addr_t page_phys; + + assert_spin_locked(&rk_domain->dt_lock); + + for (pte_count = 0; pte_count < pte_total; pte_count++) { + u32 pte = pte_addr[pte_count]; + + if (rk_pte_is_page_valid(pte)) + goto unwind; + + pte_addr[pte_count] = rk_mk_pte(paddr, prot); + + paddr += SPAGE_SIZE; + } + + rk_table_flush(pte_addr, pte_count); + + return 0; +unwind: + /* Unmap the range of iovas that we just mapped */ + rk_iommu_unmap_iova(rk_domain, pte_addr, iova, pte_count * SPAGE_SIZE); + + iova += pte_count * SPAGE_SIZE; + page_phys = rk_pte_page_address(pte_addr[pte_count]); + pr_err("iova: %pad already mapped to %pa cannot remap to phys: %pa prot: %#x\n", + &iova, &page_phys, &paddr, prot); + + return -EADDRINUSE; +} + +static int rk_iommu_map(struct iommu_domain *domain, unsigned long _iova, + phys_addr_t paddr, size_t size, int prot) +{ + struct rk_iommu_domain *rk_domain = domain->priv; + unsigned long flags; + dma_addr_t iova = (dma_addr_t)_iova; + u32 *page_table, *pte_addr; + int ret; + + spin_lock_irqsave(&rk_domain->dt_lock, flags); + + /* + * pgsize_bitmap specifies iova sizes that fit in one page table + * (1024 4-KiB pages = 4 MiB). + * So, size will always be 4096 <= size <= 4194304. + * Since iommu_map() guarantees that both iova and size will be + * aligned, we will always only be mapping from a single dte here. + */ + page_table = rk_dte_get_page_table(rk_domain, iova); + if (IS_ERR(page_table)) { + spin_unlock_irqrestore(&rk_domain->dt_lock, flags); + return PTR_ERR(page_table); + } + + pte_addr = &page_table[rk_iova_pte_index(iova)]; + ret = rk_iommu_map_iova(rk_domain, pte_addr, iova, paddr, size, prot); + spin_unlock_irqrestore(&rk_domain->dt_lock, flags); + + return ret; +} + +static size_t rk_iommu_unmap(struct iommu_domain *domain, unsigned long _iova, + size_t size) +{ + struct rk_iommu_domain *rk_domain = domain->priv; + unsigned long flags; + dma_addr_t iova = (dma_addr_t)_iova; + phys_addr_t pt_phys; + u32 dte; + u32 *pte_addr; + size_t unmap_size; + + spin_lock_irqsave(&rk_domain->dt_lock, flags); + + /* + * pgsize_bitmap specifies iova sizes that fit in one page table + * (1024 4-KiB pages = 4 MiB). + * So, size will always be 4096 <= size <= 4194304. + * Since iommu_unmap() guarantees that both iova and size will be + * aligned, we will always only be unmapping from a single dte here. + */ + dte = rk_domain->dt[rk_iova_dte_index(iova)]; + /* Just return 0 if iova is unmapped */ + if (!rk_dte_is_pt_valid(dte)) { + spin_unlock_irqrestore(&rk_domain->dt_lock, flags); + return 0; + } + + pt_phys = rk_dte_pt_address(dte); + pte_addr = (u32 *)phys_to_virt(pt_phys) + rk_iova_pte_index(iova); + unmap_size = rk_iommu_unmap_iova(rk_domain, pte_addr, iova, size); + + spin_unlock_irqrestore(&rk_domain->dt_lock, flags); + + /* Shootdown iotlb entries for iova range that was just unmapped */ + rk_iommu_zap_iova(rk_domain, iova, unmap_size); + + return unmap_size; +} + +static struct rk_iommu *rk_iommu_from_dev(struct device *dev) +{ + struct iommu_group *group; + struct device *iommu_dev; + struct rk_iommu *rk_iommu; + + group = iommu_group_get(dev); + if (!group) + return NULL; + iommu_dev = iommu_group_get_iommudata(group); + rk_iommu = dev_get_drvdata(iommu_dev); + iommu_group_put(group); + + return rk_iommu; +} + +static int rk_iommu_attach_device(struct iommu_domain *domain, + struct device *dev) +{ + struct rk_iommu *iommu; + struct rk_iommu_domain *rk_domain = domain->priv; + unsigned long flags; + int ret; + phys_addr_t dte_addr; + + /* + * Allow 'virtual devices' (e.g., drm) to attach to domain. + * Such a device does not belong to an iommu group. + */ + iommu = rk_iommu_from_dev(dev); + if (!iommu) + return 0; + + ret = rk_iommu_enable_stall(iommu); + if (ret) + return ret; + + ret = rk_iommu_force_reset(iommu); + if (ret) + return ret; + + iommu->domain = domain; + + ret = devm_request_irq(dev, iommu->irq, rk_iommu_irq, + IRQF_SHARED, dev_name(dev), iommu); + if (ret) + return ret; + + dte_addr = virt_to_phys(rk_domain->dt); + rk_iommu_write(iommu, RK_MMU_DTE_ADDR, dte_addr); + rk_iommu_command(iommu, RK_MMU_CMD_ZAP_CACHE); + rk_iommu_write(iommu, RK_MMU_INT_MASK, RK_MMU_IRQ_MASK); + + ret = rk_iommu_enable_paging(iommu); + if (ret) + return ret; + + spin_lock_irqsave(&rk_domain->iommus_lock, flags); + list_add_tail(&iommu->node, &rk_domain->iommus); + spin_unlock_irqrestore(&rk_domain->iommus_lock, flags); + + dev_info(dev, "Attached to iommu domain\n"); + + rk_iommu_disable_stall(iommu); + + return 0; +} + +static void rk_iommu_detach_device(struct iommu_domain *domain, + struct device *dev) +{ + struct rk_iommu *iommu; + struct rk_iommu_domain *rk_domain = domain->priv; + unsigned long flags; + + /* Allow 'virtual devices' (eg drm) to detach from domain */ + iommu = rk_iommu_from_dev(dev); + if (!iommu) + return; + + spin_lock_irqsave(&rk_domain->iommus_lock, flags); + list_del_init(&iommu->node); + spin_unlock_irqrestore(&rk_domain->iommus_lock, flags); + + /* Ignore error while disabling, just keep going */ + rk_iommu_enable_stall(iommu); + rk_iommu_disable_paging(iommu); + rk_iommu_write(iommu, RK_MMU_INT_MASK, 0); + rk_iommu_write(iommu, RK_MMU_DTE_ADDR, 0); + rk_iommu_disable_stall(iommu); + + devm_free_irq(dev, iommu->irq, iommu); + + iommu->domain = NULL; + + dev_info(dev, "Detached from iommu domain\n"); +} + +static int rk_iommu_domain_init(struct iommu_domain *domain) +{ + struct rk_iommu_domain *rk_domain; + + rk_domain = kzalloc(sizeof(*rk_domain), GFP_KERNEL); + if (!rk_domain) + return -ENOMEM; + + /* + * rk32xx iommus use a 2 level pagetable. + * Each level1 (dt) and level2 (pt) table has 1024 4-byte entries. + * Allocate one 4 KiB page for each table. + */ + rk_domain->dt = (u32 *)get_zeroed_page(GFP_KERNEL | GFP_DMA32); + if (!rk_domain->dt) + goto err_dt; + + rk_table_flush(rk_domain->dt, NUM_DT_ENTRIES); + + spin_lock_init(&rk_domain->iommus_lock); + spin_lock_init(&rk_domain->dt_lock); + INIT_LIST_HEAD(&rk_domain->iommus); + + domain->priv = rk_domain; + + return 0; +err_dt: + kfree(rk_domain); + return -ENOMEM; +} + +static void rk_iommu_domain_destroy(struct iommu_domain *domain) +{ + struct rk_iommu_domain *rk_domain = domain->priv; + int i; + + WARN_ON(!list_empty(&rk_domain->iommus)); + + for (i = 0; i < NUM_DT_ENTRIES; i++) { + u32 dte = rk_domain->dt[i]; + if (rk_dte_is_pt_valid(dte)) { + phys_addr_t pt_phys = rk_dte_pt_address(dte); + u32 *page_table = phys_to_virt(pt_phys); + free_page((unsigned long)page_table); + } + } + + free_page((unsigned long)rk_domain->dt); + kfree(domain->priv); + domain->priv = NULL; +} + +static bool rk_iommu_is_dev_iommu_master(struct device *dev) +{ + struct device_node *np = dev->of_node; + int ret; + + /* + * An iommu master has an iommus property containing a list of phandles + * to iommu nodes, each with an #iommu-cells property with value 0. + */ + ret = of_count_phandle_with_args(np, "iommus", "#iommu-cells"); + return (ret > 0); +} + +static int rk_iommu_group_set_iommudata(struct iommu_group *group, + struct device *dev) +{ + struct device_node *np = dev->of_node; + struct platform_device *pd; + int ret; + struct of_phandle_args args; + + /* + * An iommu master has an iommus property containing a list of phandles + * to iommu nodes, each with an #iommu-cells property with value 0. + */ + ret = of_parse_phandle_with_args(np, "iommus", "#iommu-cells", 0, + &args); + if (ret) { + dev_err(dev, "of_parse_phandle_with_args(%s) => %d\n", + np->full_name, ret); + return ret; + } + if (args.args_count != 0) { + dev_err(dev, "incorrect number of iommu params found for %s (found %d, expected 0)\n", + args.np->full_name, args.args_count); + return -EINVAL; + } + + pd = of_find_device_by_node(args.np); + of_node_put(args.np); + if (!pd) { + dev_err(dev, "iommu %s not found\n", args.np->full_name); + return -EPROBE_DEFER; + } + + /* TODO(djkurtz): handle multiple slave iommus for a single master */ + iommu_group_set_iommudata(group, &pd->dev, NULL); + + return 0; +} + +static int rk_iommu_add_device(struct device *dev) +{ + struct iommu_group *group; + int ret; + + if (!rk_iommu_is_dev_iommu_master(dev)) + return -ENODEV; + + group = iommu_group_get(dev); + if (!group) { + group = iommu_group_alloc(); + if (IS_ERR(group)) { + dev_err(dev, "Failed to allocate IOMMU group\n"); + return PTR_ERR(group); + } + } + + ret = iommu_group_add_device(group, dev); + if (ret) + goto err_put_group; + + ret = rk_iommu_group_set_iommudata(group, dev); + if (ret) + goto err_remove_device; + + iommu_group_put(group); + + return 0; + +err_remove_device: + iommu_group_remove_device(dev); +err_put_group: + iommu_group_put(group); + return ret; +} + +static void rk_iommu_remove_device(struct device *dev) +{ + if (!rk_iommu_is_dev_iommu_master(dev)) + return; + + iommu_group_remove_device(dev); +} + +static const struct iommu_ops rk_iommu_ops = { + .domain_init = rk_iommu_domain_init, + .domain_destroy = rk_iommu_domain_destroy, + .attach_dev = rk_iommu_attach_device, + .detach_dev = rk_iommu_detach_device, + .map = rk_iommu_map, + .unmap = rk_iommu_unmap, + .add_device = rk_iommu_add_device, + .remove_device = rk_iommu_remove_device, + .iova_to_phys = rk_iommu_iova_to_phys, + .pgsize_bitmap = RK_IOMMU_PGSIZE_BITMAP, +}; + +static int rk_iommu_probe(struct platform_device *pdev) +{ + struct device *dev = &pdev->dev; + struct rk_iommu *iommu; + struct resource *res; + + iommu = devm_kzalloc(dev, sizeof(*iommu), GFP_KERNEL); + if (!iommu) + return -ENOMEM; + + platform_set_drvdata(pdev, iommu); + iommu->dev = dev; + + res = platform_get_resource(pdev, IORESOURCE_MEM, 0); + iommu->base = devm_ioremap_resource(&pdev->dev, res); + if (IS_ERR(iommu->base)) + return PTR_ERR(iommu->base); + + iommu->irq = platform_get_irq(pdev, 0); + if (iommu->irq < 0) { + dev_err(dev, "Failed to get IRQ, %d\n", iommu->irq); + return -ENXIO; + } + + return 0; +} + +static int rk_iommu_remove(struct platform_device *pdev) +{ + return 0; +} + +#ifdef CONFIG_OF +static const struct of_device_id rk_iommu_dt_ids[] = { + { .compatible = "rockchip,iommu" }, + { /* sentinel */ } +}; +MODULE_DEVICE_TABLE(of, rk_iommu_dt_ids); +#endif + +static struct platform_driver rk_iommu_driver = { + .probe = rk_iommu_probe, + .remove = rk_iommu_remove, + .driver = { + .name = "rk_iommu", + .owner = THIS_MODULE, + .of_match_table = of_match_ptr(rk_iommu_dt_ids), + }, +}; + +static int __init rk_iommu_init(void) +{ + int ret; + + ret = bus_set_iommu(&platform_bus_type, &rk_iommu_ops); + if (ret) + return ret; + + return platform_driver_register(&rk_iommu_driver); +} +static void __exit rk_iommu_exit(void) +{ + platform_driver_unregister(&rk_iommu_driver); +} + +subsys_initcall(rk_iommu_init); +module_exit(rk_iommu_exit); + +MODULE_DESCRIPTION("IOMMU API for Rockchip"); +MODULE_AUTHOR("Simon Xue and Daniel Kurtz "); +MODULE_ALIAS("platform:rockchip-iommu"); +MODULE_LICENSE("GPL v2"); From 656d7077d8ffd1c2492d4a0a354367ab2e545059 Mon Sep 17 00:00:00 2001 From: Daniel Kurtz Date: Mon, 3 Nov 2014 10:53:28 +0800 Subject: [PATCH 2/5] dt-bindings: iommu: Add documentation for rockchip iommu Add binding documentation for Rockchip IOMMU. Signed-off-by: Daniel Kurtz Signed-off-by: Simon Xue Reviewed-by: Heiko Stuebner Signed-off-by: Joerg Roedel --- .../bindings/iommu/rockchip,iommu.txt | 26 +++++++++++++++++++ 1 file changed, 26 insertions(+) create mode 100644 Documentation/devicetree/bindings/iommu/rockchip,iommu.txt diff --git a/Documentation/devicetree/bindings/iommu/rockchip,iommu.txt b/Documentation/devicetree/bindings/iommu/rockchip,iommu.txt new file mode 100644 index 0000000000000..9a55ac3735e54 --- /dev/null +++ b/Documentation/devicetree/bindings/iommu/rockchip,iommu.txt @@ -0,0 +1,26 @@ +Rockchip IOMMU +============== + +A Rockchip DRM iommu translates io virtual addresses to physical addresses for +its master device. Each slave device is bound to a single master device, and +shares its clocks, power domain and irq. + +Required properties: +- compatible : Should be "rockchip,iommu" +- reg : Address space for the configuration registers +- interrupts : Interrupt specifier for the IOMMU instance +- interrupt-names : Interrupt name for the IOMMU instance +- #iommu-cells : Should be <0>. This indicates the iommu is a + "single-master" device, and needs no additional information + to associate with its master device. See: + Documentation/devicetree/bindings/iommu/iommu.txt + +Example: + + vopl_mmu: iommu@ff940300 { + compatible = "rockchip,iommu"; + reg = <0xff940300 0x100>; + interrupts = ; + interrupt-names = "vopl_mmu"; + #iommu-cells = <0>; + }; From 2048e3286f347db5667708e47448176b5329e8d8 Mon Sep 17 00:00:00 2001 From: Mark Yao Date: Fri, 22 Aug 2014 18:36:26 +0800 Subject: [PATCH 3/5] drm: rockchip: Add basic drm driver This patch adds the basic structure of a DRM Driver for Rockchip Socs. Signed-off-by: Mark Yao Signed-off-by: Daniel Kurtz Acked-by: Daniel Vetter Reviewed-by: Rob Clark --- drivers/gpu/drm/Kconfig | 2 + drivers/gpu/drm/Makefile | 1 + drivers/gpu/drm/rockchip/Kconfig | 17 + drivers/gpu/drm/rockchip/Makefile | 8 + drivers/gpu/drm/rockchip/rockchip_drm_drv.c | 551 +++++++ drivers/gpu/drm/rockchip/rockchip_drm_drv.h | 68 + drivers/gpu/drm/rockchip/rockchip_drm_fb.c | 201 +++ drivers/gpu/drm/rockchip/rockchip_drm_fb.h | 28 + drivers/gpu/drm/rockchip/rockchip_drm_fbdev.c | 210 +++ drivers/gpu/drm/rockchip/rockchip_drm_fbdev.h | 21 + drivers/gpu/drm/rockchip/rockchip_drm_gem.c | 294 ++++ drivers/gpu/drm/rockchip/rockchip_drm_gem.h | 54 + drivers/gpu/drm/rockchip/rockchip_drm_vop.c | 1455 +++++++++++++++++ drivers/gpu/drm/rockchip/rockchip_drm_vop.h | 201 +++ 14 files changed, 3111 insertions(+) create mode 100644 drivers/gpu/drm/rockchip/Kconfig create mode 100644 drivers/gpu/drm/rockchip/Makefile create mode 100644 drivers/gpu/drm/rockchip/rockchip_drm_drv.c create mode 100644 drivers/gpu/drm/rockchip/rockchip_drm_drv.h create mode 100644 drivers/gpu/drm/rockchip/rockchip_drm_fb.c create mode 100644 drivers/gpu/drm/rockchip/rockchip_drm_fb.h create mode 100644 drivers/gpu/drm/rockchip/rockchip_drm_fbdev.c create mode 100644 drivers/gpu/drm/rockchip/rockchip_drm_fbdev.h create mode 100644 drivers/gpu/drm/rockchip/rockchip_drm_gem.c create mode 100644 drivers/gpu/drm/rockchip/rockchip_drm_gem.h create mode 100644 drivers/gpu/drm/rockchip/rockchip_drm_vop.c create mode 100644 drivers/gpu/drm/rockchip/rockchip_drm_vop.h diff --git a/drivers/gpu/drm/Kconfig b/drivers/gpu/drm/Kconfig index e3b4b0f02b3d1..3f1624b5fcde1 100644 --- a/drivers/gpu/drm/Kconfig +++ b/drivers/gpu/drm/Kconfig @@ -167,6 +167,8 @@ config DRM_SAVAGE source "drivers/gpu/drm/exynos/Kconfig" +source "drivers/gpu/drm/rockchip/Kconfig" + source "drivers/gpu/drm/vmwgfx/Kconfig" source "drivers/gpu/drm/gma500/Kconfig" diff --git a/drivers/gpu/drm/Makefile b/drivers/gpu/drm/Makefile index 9292a761ea6db..14bf29e76693a 100644 --- a/drivers/gpu/drm/Makefile +++ b/drivers/gpu/drm/Makefile @@ -49,6 +49,7 @@ obj-$(CONFIG_DRM_VMWGFX)+= vmwgfx/ obj-$(CONFIG_DRM_VIA) +=via/ obj-$(CONFIG_DRM_NOUVEAU) +=nouveau/ obj-$(CONFIG_DRM_EXYNOS) +=exynos/ +obj-$(CONFIG_DRM_ROCKCHIP) +=rockchip/ obj-$(CONFIG_DRM_GMA500) += gma500/ obj-$(CONFIG_DRM_UDL) += udl/ obj-$(CONFIG_DRM_AST) += ast/ diff --git a/drivers/gpu/drm/rockchip/Kconfig b/drivers/gpu/drm/rockchip/Kconfig new file mode 100644 index 0000000000000..ca9f085efa922 --- /dev/null +++ b/drivers/gpu/drm/rockchip/Kconfig @@ -0,0 +1,17 @@ +config DRM_ROCKCHIP + tristate "DRM Support for Rockchip" + depends on DRM && ROCKCHIP_IOMMU + select DRM_KMS_HELPER + select DRM_KMS_FB_HELPER + select DRM_PANEL + select FB_CFB_FILLRECT + select FB_CFB_COPYAREA + select FB_CFB_IMAGEBLIT + select VT_HW_CONSOLE_BINDING if FRAMEBUFFER_CONSOLE + select VIDEOMODE_HELPERS + help + Choose this option if you have a Rockchip soc chipset. + This driver provides kernel mode setting and buffer + management to userspace. This driver does not provide + 2D or 3D acceleration; acceleration is performed by other + IP found on the SoC. diff --git a/drivers/gpu/drm/rockchip/Makefile b/drivers/gpu/drm/rockchip/Makefile new file mode 100644 index 0000000000000..2cb0672f57eda --- /dev/null +++ b/drivers/gpu/drm/rockchip/Makefile @@ -0,0 +1,8 @@ +# +# Makefile for the drm device driver. This driver provides support for the +# Direct Rendering Infrastructure (DRI) in XFree86 4.1.0 and higher. + +rockchipdrm-y := rockchip_drm_drv.o rockchip_drm_fb.o rockchip_drm_fbdev.o \ + rockchip_drm_gem.o + +obj-$(CONFIG_DRM_ROCKCHIP) += rockchipdrm.o rockchip_drm_vop.o diff --git a/drivers/gpu/drm/rockchip/rockchip_drm_drv.c b/drivers/gpu/drm/rockchip/rockchip_drm_drv.c new file mode 100644 index 0000000000000..a798c7c71f916 --- /dev/null +++ b/drivers/gpu/drm/rockchip/rockchip_drm_drv.c @@ -0,0 +1,551 @@ +/* + * Copyright (C) Fuzhou Rockchip Electronics Co.Ltd + * Author:Mark Yao + * + * based on exynos_drm_drv.c + * + * This software is licensed under the terms of the GNU General Public + * License version 2, as published by the Free Software Foundation, and + * may be copied, distributed, and modified under those terms. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + */ + +#include + +#include +#include +#include +#include +#include +#include +#include + +#include "rockchip_drm_drv.h" +#include "rockchip_drm_fb.h" +#include "rockchip_drm_fbdev.h" +#include "rockchip_drm_gem.h" + +#define DRIVER_NAME "rockchip" +#define DRIVER_DESC "RockChip Soc DRM" +#define DRIVER_DATE "20140818" +#define DRIVER_MAJOR 1 +#define DRIVER_MINOR 0 + +/* + * Attach a (component) device to the shared drm dma mapping from master drm + * device. This is used by the VOPs to map GEM buffers to a common DMA + * mapping. + */ +int rockchip_drm_dma_attach_device(struct drm_device *drm_dev, + struct device *dev) +{ + struct dma_iommu_mapping *mapping = drm_dev->dev->archdata.mapping; + int ret; + + ret = dma_set_coherent_mask(dev, DMA_BIT_MASK(32)); + if (ret) + return ret; + + dma_set_max_seg_size(dev, DMA_BIT_MASK(32)); + + return arm_iommu_attach_device(dev, mapping); +} +EXPORT_SYMBOL_GPL(rockchip_drm_dma_attach_device); + +void rockchip_drm_dma_detach_device(struct drm_device *drm_dev, + struct device *dev) +{ + arm_iommu_detach_device(dev); +} +EXPORT_SYMBOL_GPL(rockchip_drm_dma_detach_device); + +int rockchip_register_crtc_funcs(struct drm_device *dev, + const struct rockchip_crtc_funcs *crtc_funcs, + int pipe) +{ + struct rockchip_drm_private *priv = dev->dev_private; + + if (pipe > ROCKCHIP_MAX_CRTC) + return -EINVAL; + + priv->crtc_funcs[pipe] = crtc_funcs; + + return 0; +} +EXPORT_SYMBOL_GPL(rockchip_register_crtc_funcs); + +void rockchip_unregister_crtc_funcs(struct drm_device *dev, int pipe) +{ + struct rockchip_drm_private *priv = dev->dev_private; + + if (pipe > ROCKCHIP_MAX_CRTC) + return; + + priv->crtc_funcs[pipe] = NULL; +} +EXPORT_SYMBOL_GPL(rockchip_unregister_crtc_funcs); + +static struct drm_crtc *rockchip_crtc_from_pipe(struct drm_device *drm, + int pipe) +{ + struct drm_crtc *crtc; + int i = 0; + + list_for_each_entry(crtc, &drm->mode_config.crtc_list, head) + if (i++ == pipe) + return crtc; + + return NULL; +} + +static int rockchip_drm_crtc_enable_vblank(struct drm_device *dev, int pipe) +{ + struct rockchip_drm_private *priv = dev->dev_private; + struct drm_crtc *crtc = rockchip_crtc_from_pipe(dev, pipe); + + if (crtc && priv->crtc_funcs[pipe] && + priv->crtc_funcs[pipe]->enable_vblank) + return priv->crtc_funcs[pipe]->enable_vblank(crtc); + + return 0; +} + +static void rockchip_drm_crtc_disable_vblank(struct drm_device *dev, int pipe) +{ + struct rockchip_drm_private *priv = dev->dev_private; + struct drm_crtc *crtc = rockchip_crtc_from_pipe(dev, pipe); + + if (crtc && priv->crtc_funcs[pipe] && + priv->crtc_funcs[pipe]->enable_vblank) + priv->crtc_funcs[pipe]->disable_vblank(crtc); +} + +static int rockchip_drm_load(struct drm_device *drm_dev, unsigned long flags) +{ + struct rockchip_drm_private *private; + struct dma_iommu_mapping *mapping; + struct device *dev = drm_dev->dev; + int ret; + + private = devm_kzalloc(drm_dev->dev, sizeof(*private), GFP_KERNEL); + if (!private) + return -ENOMEM; + + drm_dev->dev_private = private; + + drm_mode_config_init(drm_dev); + + rockchip_drm_mode_config_init(drm_dev); + + dev->dma_parms = devm_kzalloc(dev, sizeof(*dev->dma_parms), + GFP_KERNEL); + if (!dev->dma_parms) { + ret = -ENOMEM; + goto err_config_cleanup; + } + + /* TODO(djkurtz): fetch the mapping start/size from somewhere */ + mapping = arm_iommu_create_mapping(&platform_bus_type, 0x00000000, + SZ_2G); + if (IS_ERR(mapping)) { + ret = PTR_ERR(mapping); + goto err_config_cleanup; + } + + ret = dma_set_mask_and_coherent(dev, DMA_BIT_MASK(32)); + if (ret) + goto err_release_mapping; + + dma_set_max_seg_size(dev, DMA_BIT_MASK(32)); + + ret = arm_iommu_attach_device(dev, mapping); + if (ret) + goto err_release_mapping; + + /* Try to bind all sub drivers. */ + ret = component_bind_all(dev, drm_dev); + if (ret) + goto err_detach_device; + + /* init kms poll for handling hpd */ + drm_kms_helper_poll_init(drm_dev); + + /* + * enable drm irq mode. + * - with irq_enabled = true, we can use the vblank feature. + */ + drm_dev->irq_enabled = true; + + ret = drm_vblank_init(drm_dev, ROCKCHIP_MAX_CRTC); + if (ret) + goto err_kms_helper_poll_fini; + + /* + * with vblank_disable_allowed = true, vblank interrupt will be disabled + * by drm timer once a current process gives up ownership of + * vblank event.(after drm_vblank_put function is called) + */ + drm_dev->vblank_disable_allowed = true; + + ret = rockchip_drm_fbdev_init(drm_dev); + if (ret) + goto err_vblank_cleanup; + + return 0; +err_vblank_cleanup: + drm_vblank_cleanup(drm_dev); +err_kms_helper_poll_fini: + drm_kms_helper_poll_fini(drm_dev); + component_unbind_all(dev, drm_dev); +err_detach_device: + arm_iommu_detach_device(dev); +err_release_mapping: + arm_iommu_release_mapping(dev->archdata.mapping); +err_config_cleanup: + drm_mode_config_cleanup(drm_dev); + drm_dev->dev_private = NULL; + return ret; +} + +static int rockchip_drm_unload(struct drm_device *drm_dev) +{ + struct device *dev = drm_dev->dev; + + rockchip_drm_fbdev_fini(drm_dev); + drm_vblank_cleanup(drm_dev); + drm_kms_helper_poll_fini(drm_dev); + component_unbind_all(dev, drm_dev); + arm_iommu_detach_device(dev); + arm_iommu_release_mapping(dev->archdata.mapping); + drm_mode_config_cleanup(drm_dev); + drm_dev->dev_private = NULL; + + return 0; +} + +void rockchip_drm_lastclose(struct drm_device *dev) +{ + struct rockchip_drm_private *priv = dev->dev_private; + + drm_fb_helper_restore_fbdev_mode_unlocked(&priv->fbdev_helper); +} + +static const struct file_operations rockchip_drm_driver_fops = { + .owner = THIS_MODULE, + .open = drm_open, + .mmap = rockchip_gem_mmap, + .poll = drm_poll, + .read = drm_read, + .unlocked_ioctl = drm_ioctl, +#ifdef CONFIG_COMPAT + .compat_ioctl = drm_compat_ioctl, +#endif + .release = drm_release, +}; + +const struct vm_operations_struct rockchip_drm_vm_ops = { + .open = drm_gem_vm_open, + .close = drm_gem_vm_close, +}; + +static struct drm_driver rockchip_drm_driver = { + .driver_features = DRIVER_MODESET | DRIVER_GEM | DRIVER_PRIME, + .load = rockchip_drm_load, + .unload = rockchip_drm_unload, + .lastclose = rockchip_drm_lastclose, + .get_vblank_counter = drm_vblank_count, + .enable_vblank = rockchip_drm_crtc_enable_vblank, + .disable_vblank = rockchip_drm_crtc_disable_vblank, + .gem_vm_ops = &rockchip_drm_vm_ops, + .gem_free_object = rockchip_gem_free_object, + .dumb_create = rockchip_gem_dumb_create, + .dumb_map_offset = rockchip_gem_dumb_map_offset, + .dumb_destroy = drm_gem_dumb_destroy, + .prime_handle_to_fd = drm_gem_prime_handle_to_fd, + .prime_fd_to_handle = drm_gem_prime_fd_to_handle, + .gem_prime_import = drm_gem_prime_import, + .gem_prime_export = drm_gem_prime_export, + .gem_prime_get_sg_table = rockchip_gem_prime_get_sg_table, + .gem_prime_vmap = rockchip_gem_prime_vmap, + .gem_prime_vunmap = rockchip_gem_prime_vunmap, + .gem_prime_mmap = rockchip_gem_mmap_buf, + .fops = &rockchip_drm_driver_fops, + .name = DRIVER_NAME, + .desc = DRIVER_DESC, + .date = DRIVER_DATE, + .major = DRIVER_MAJOR, + .minor = DRIVER_MINOR, +}; + +#ifdef CONFIG_PM_SLEEP +static int rockchip_drm_sys_suspend(struct device *dev) +{ + struct drm_device *drm = dev_get_drvdata(dev); + struct drm_connector *connector; + + if (!drm) + return 0; + + drm_modeset_lock_all(drm); + list_for_each_entry(connector, &drm->mode_config.connector_list, head) { + int old_dpms = connector->dpms; + + if (connector->funcs->dpms) + connector->funcs->dpms(connector, DRM_MODE_DPMS_OFF); + + /* Set the old mode back to the connector for resume */ + connector->dpms = old_dpms; + } + drm_modeset_unlock_all(drm); + + return 0; +} + +static int rockchip_drm_sys_resume(struct device *dev) +{ + struct drm_device *drm = dev_get_drvdata(dev); + struct drm_connector *connector; + enum drm_connector_status status; + bool changed = false; + + if (!drm) + return 0; + + drm_modeset_lock_all(drm); + list_for_each_entry(connector, &drm->mode_config.connector_list, head) { + int desired_mode = connector->dpms; + + /* + * at suspend time, we save dpms to connector->dpms, + * restore the old_dpms, and at current time, the connector + * dpms status must be DRM_MODE_DPMS_OFF. + */ + connector->dpms = DRM_MODE_DPMS_OFF; + + /* + * If the connector has been disconnected during suspend, + * disconnect it from the encoder and leave it off. We'll notify + * userspace at the end. + */ + if (desired_mode == DRM_MODE_DPMS_ON) { + status = connector->funcs->detect(connector, true); + if (status == connector_status_disconnected) { + connector->encoder = NULL; + connector->status = status; + changed = true; + continue; + } + } + if (connector->funcs->dpms) + connector->funcs->dpms(connector, desired_mode); + } + drm_modeset_unlock_all(drm); + + drm_helper_resume_force_mode(drm); + + if (changed) + drm_kms_helper_hotplug_event(drm); + + return 0; +} +#endif + +static const struct dev_pm_ops rockchip_drm_pm_ops = { + SET_SYSTEM_SLEEP_PM_OPS(rockchip_drm_sys_suspend, + rockchip_drm_sys_resume) +}; + +/* + * @node: device tree node containing encoder input ports + * @encoder: drm_encoder + */ +int rockchip_drm_encoder_get_mux_id(struct device_node *node, + struct drm_encoder *encoder) +{ + struct device_node *ep = NULL; + struct drm_crtc *crtc = encoder->crtc; + struct of_endpoint endpoint; + struct device_node *port; + int ret; + + if (!node || !crtc) + return -EINVAL; + + do { + ep = of_graph_get_next_endpoint(node, ep); + if (!ep) + break; + + port = of_graph_get_remote_port(ep); + of_node_put(port); + if (port == crtc->port) { + ret = of_graph_parse_endpoint(ep, &endpoint); + return ret ?: endpoint.id; + } + } while (ep); + + return -EINVAL; +} + +static int compare_of(struct device *dev, void *data) +{ + struct device_node *np = data; + + return dev->of_node == np; +} + +static void rockchip_add_endpoints(struct device *dev, + struct component_match **match, + struct device_node *port) +{ + struct device_node *ep, *remote; + + for_each_child_of_node(port, ep) { + remote = of_graph_get_remote_port_parent(ep); + if (!remote || !of_device_is_available(remote)) { + of_node_put(remote); + continue; + } else if (!of_device_is_available(remote->parent)) { + dev_warn(dev, "parent device of %s is not available\n", + remote->full_name); + of_node_put(remote); + continue; + } + + component_match_add(dev, match, compare_of, remote); + of_node_put(remote); + } +} + +static int rockchip_drm_bind(struct device *dev) +{ + struct drm_device *drm; + int ret; + + drm = drm_dev_alloc(&rockchip_drm_driver, dev); + if (!drm) + return -ENOMEM; + + ret = drm_dev_set_unique(drm, "%s", dev_name(dev)); + if (ret) + goto err_free; + + ret = drm_dev_register(drm, 0); + if (ret) + goto err_free; + + dev_set_drvdata(dev, drm); + + return 0; + +err_free: + drm_dev_unref(drm); + return ret; +} + +static void rockchip_drm_unbind(struct device *dev) +{ + struct drm_device *drm = dev_get_drvdata(dev); + + drm_dev_unregister(drm); + drm_dev_unref(drm); + dev_set_drvdata(dev, NULL); +} + +static const struct component_master_ops rockchip_drm_ops = { + .bind = rockchip_drm_bind, + .unbind = rockchip_drm_unbind, +}; + +static int rockchip_drm_platform_probe(struct platform_device *pdev) +{ + struct device *dev = &pdev->dev; + struct component_match *match = NULL; + struct device_node *np = dev->of_node; + struct device_node *port; + int i; + + if (!np) + return -ENODEV; + /* + * Bind the crtc ports first, so that + * drm_of_find_possible_crtcs called from encoder .bind callbacks + * works as expected. + */ + for (i = 0;; i++) { + port = of_parse_phandle(np, "ports", i); + if (!port) + break; + + if (!of_device_is_available(port->parent)) { + of_node_put(port); + continue; + } + + component_match_add(dev, &match, compare_of, port->parent); + of_node_put(port); + } + + if (i == 0) { + dev_err(dev, "missing 'ports' property\n"); + return -ENODEV; + } + + if (!match) { + dev_err(dev, "No available vop found for display-subsystem.\n"); + return -ENODEV; + } + /* + * For each bound crtc, bind the encoders attached to its + * remote endpoint. + */ + for (i = 0;; i++) { + port = of_parse_phandle(np, "ports", i); + if (!port) + break; + + if (!of_device_is_available(port->parent)) { + of_node_put(port); + continue; + } + + rockchip_add_endpoints(dev, &match, port); + of_node_put(port); + } + + return component_master_add_with_match(dev, &rockchip_drm_ops, match); +} + +static int rockchip_drm_platform_remove(struct platform_device *pdev) +{ + component_master_del(&pdev->dev, &rockchip_drm_ops); + + return 0; +} + +static const struct of_device_id rockchip_drm_dt_ids[] = { + { .compatible = "rockchip,display-subsystem", }, + { /* sentinel */ }, +}; +MODULE_DEVICE_TABLE(of, rockchip_drm_dt_ids); + +static struct platform_driver rockchip_drm_platform_driver = { + .probe = rockchip_drm_platform_probe, + .remove = rockchip_drm_platform_remove, + .driver = { + .owner = THIS_MODULE, + .name = "rockchip-drm", + .of_match_table = rockchip_drm_dt_ids, + .pm = &rockchip_drm_pm_ops, + }, +}; + +module_platform_driver(rockchip_drm_platform_driver); + +MODULE_AUTHOR("Mark Yao "); +MODULE_DESCRIPTION("ROCKCHIP DRM Driver"); +MODULE_LICENSE("GPL v2"); diff --git a/drivers/gpu/drm/rockchip/rockchip_drm_drv.h b/drivers/gpu/drm/rockchip/rockchip_drm_drv.h new file mode 100644 index 0000000000000..dc4e5f03ac79c --- /dev/null +++ b/drivers/gpu/drm/rockchip/rockchip_drm_drv.h @@ -0,0 +1,68 @@ +/* + * Copyright (C) Fuzhou Rockchip Electronics Co.Ltd + * Author:Mark Yao + * + * based on exynos_drm_drv.h + * + * This software is licensed under the terms of the GNU General Public + * License version 2, as published by the Free Software Foundation, and + * may be copied, distributed, and modified under those terms. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + */ + +#ifndef _ROCKCHIP_DRM_DRV_H +#define _ROCKCHIP_DRM_DRV_H + +#include +#include + +#include +#include + +#define ROCKCHIP_MAX_FB_BUFFER 3 +#define ROCKCHIP_MAX_CONNECTOR 2 +#define ROCKCHIP_MAX_CRTC 2 + +struct drm_device; +struct drm_connector; + +/* + * Rockchip drm private crtc funcs. + * @enable_vblank: enable crtc vblank irq. + * @disable_vblank: disable crtc vblank irq. + */ +struct rockchip_crtc_funcs { + int (*enable_vblank)(struct drm_crtc *crtc); + void (*disable_vblank)(struct drm_crtc *crtc); +}; + +/* + * Rockchip drm private structure. + * + * @crtc: array of enabled CRTCs, used to map from "pipe" to drm_crtc. + * @num_pipe: number of pipes for this device. + */ +struct rockchip_drm_private { + struct drm_fb_helper fbdev_helper; + struct drm_gem_object *fbdev_bo; + const struct rockchip_crtc_funcs *crtc_funcs[ROCKCHIP_MAX_CRTC]; +}; + +int rockchip_register_crtc_funcs(struct drm_device *dev, + const struct rockchip_crtc_funcs *crtc_funcs, + int pipe); +void rockchip_unregister_crtc_funcs(struct drm_device *dev, int pipe); +int rockchip_drm_encoder_get_mux_id(struct device_node *node, + struct drm_encoder *encoder); +int rockchip_drm_crtc_mode_config(struct drm_crtc *crtc, int connector_type, + int out_mode); +int rockchip_drm_dma_attach_device(struct drm_device *drm_dev, + struct device *dev); +void rockchip_drm_dma_detach_device(struct drm_device *drm_dev, + struct device *dev); + +#endif /* _ROCKCHIP_DRM_DRV_H_ */ diff --git a/drivers/gpu/drm/rockchip/rockchip_drm_fb.c b/drivers/gpu/drm/rockchip/rockchip_drm_fb.c new file mode 100644 index 0000000000000..77d52893d40f6 --- /dev/null +++ b/drivers/gpu/drm/rockchip/rockchip_drm_fb.c @@ -0,0 +1,201 @@ +/* + * Copyright (C) Fuzhou Rockchip Electronics Co.Ltd + * Author:Mark Yao + * + * This software is licensed under the terms of the GNU General Public + * License version 2, as published by the Free Software Foundation, and + * may be copied, distributed, and modified under those terms. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + */ + +#include +#include +#include +#include +#include + +#include "rockchip_drm_drv.h" +#include "rockchip_drm_gem.h" + +#define to_rockchip_fb(x) container_of(x, struct rockchip_drm_fb, fb) + +struct rockchip_drm_fb { + struct drm_framebuffer fb; + struct drm_gem_object *obj[ROCKCHIP_MAX_FB_BUFFER]; +}; + +struct drm_gem_object *rockchip_fb_get_gem_obj(struct drm_framebuffer *fb, + unsigned int plane) +{ + struct rockchip_drm_fb *rk_fb = to_rockchip_fb(fb); + + if (plane >= ROCKCHIP_MAX_FB_BUFFER) + return NULL; + + return rk_fb->obj[plane]; +} +EXPORT_SYMBOL_GPL(rockchip_fb_get_gem_obj); + +static void rockchip_drm_fb_destroy(struct drm_framebuffer *fb) +{ + struct rockchip_drm_fb *rockchip_fb = to_rockchip_fb(fb); + struct drm_gem_object *obj; + int i; + + for (i = 0; i < ROCKCHIP_MAX_FB_BUFFER; i++) { + obj = rockchip_fb->obj[i]; + if (obj) + drm_gem_object_unreference_unlocked(obj); + } + + drm_framebuffer_cleanup(fb); + kfree(rockchip_fb); +} + +static int rockchip_drm_fb_create_handle(struct drm_framebuffer *fb, + struct drm_file *file_priv, + unsigned int *handle) +{ + struct rockchip_drm_fb *rockchip_fb = to_rockchip_fb(fb); + + return drm_gem_handle_create(file_priv, + rockchip_fb->obj[0], handle); +} + +static struct drm_framebuffer_funcs rockchip_drm_fb_funcs = { + .destroy = rockchip_drm_fb_destroy, + .create_handle = rockchip_drm_fb_create_handle, +}; + +static struct rockchip_drm_fb * +rockchip_fb_alloc(struct drm_device *dev, struct drm_mode_fb_cmd2 *mode_cmd, + struct drm_gem_object **obj, unsigned int num_planes) +{ + struct rockchip_drm_fb *rockchip_fb; + int ret; + int i; + + rockchip_fb = kzalloc(sizeof(*rockchip_fb), GFP_KERNEL); + if (!rockchip_fb) + return ERR_PTR(-ENOMEM); + + drm_helper_mode_fill_fb_struct(&rockchip_fb->fb, mode_cmd); + + for (i = 0; i < num_planes; i++) + rockchip_fb->obj[i] = obj[i]; + + ret = drm_framebuffer_init(dev, &rockchip_fb->fb, + &rockchip_drm_fb_funcs); + if (ret) { + dev_err(dev->dev, "Failed to initialize framebuffer: %d\n", + ret); + kfree(rockchip_fb); + return ERR_PTR(ret); + } + + return rockchip_fb; +} + +static struct drm_framebuffer * +rockchip_user_fb_create(struct drm_device *dev, struct drm_file *file_priv, + struct drm_mode_fb_cmd2 *mode_cmd) +{ + struct rockchip_drm_fb *rockchip_fb; + struct drm_gem_object *objs[ROCKCHIP_MAX_FB_BUFFER]; + struct drm_gem_object *obj; + unsigned int hsub; + unsigned int vsub; + int num_planes; + int ret; + int i; + + hsub = drm_format_horz_chroma_subsampling(mode_cmd->pixel_format); + vsub = drm_format_vert_chroma_subsampling(mode_cmd->pixel_format); + num_planes = min(drm_format_num_planes(mode_cmd->pixel_format), + ROCKCHIP_MAX_FB_BUFFER); + + for (i = 0; i < num_planes; i++) { + unsigned int width = mode_cmd->width / (i ? hsub : 1); + unsigned int height = mode_cmd->height / (i ? vsub : 1); + unsigned int min_size; + + obj = drm_gem_object_lookup(dev, file_priv, + mode_cmd->handles[i]); + if (!obj) { + dev_err(dev->dev, "Failed to lookup GEM object\n"); + ret = -ENXIO; + goto err_gem_object_unreference; + } + + min_size = (height - 1) * mode_cmd->pitches[i] + + mode_cmd->offsets[i] + + width * drm_format_plane_cpp(mode_cmd->pixel_format, i); + + if (obj->size < min_size) { + drm_gem_object_unreference_unlocked(obj); + ret = -EINVAL; + goto err_gem_object_unreference; + } + objs[i] = obj; + } + + rockchip_fb = rockchip_fb_alloc(dev, mode_cmd, objs, i); + if (IS_ERR(rockchip_fb)) { + ret = PTR_ERR(rockchip_fb); + goto err_gem_object_unreference; + } + + return &rockchip_fb->fb; + +err_gem_object_unreference: + for (i--; i >= 0; i--) + drm_gem_object_unreference_unlocked(objs[i]); + return ERR_PTR(ret); +} + +static void rockchip_drm_output_poll_changed(struct drm_device *dev) +{ + struct rockchip_drm_private *private = dev->dev_private; + struct drm_fb_helper *fb_helper = &private->fbdev_helper; + + drm_fb_helper_hotplug_event(fb_helper); +} + +static const struct drm_mode_config_funcs rockchip_drm_mode_config_funcs = { + .fb_create = rockchip_user_fb_create, + .output_poll_changed = rockchip_drm_output_poll_changed, +}; + +struct drm_framebuffer * +rockchip_drm_framebuffer_init(struct drm_device *dev, + struct drm_mode_fb_cmd2 *mode_cmd, + struct drm_gem_object *obj) +{ + struct rockchip_drm_fb *rockchip_fb; + + rockchip_fb = rockchip_fb_alloc(dev, mode_cmd, &obj, 1); + if (IS_ERR(rockchip_fb)) + return NULL; + + return &rockchip_fb->fb; +} + +void rockchip_drm_mode_config_init(struct drm_device *dev) +{ + dev->mode_config.min_width = 0; + dev->mode_config.min_height = 0; + + /* + * set max width and height as default value(4096x4096). + * this value would be used to check framebuffer size limitation + * at drm_mode_addfb(). + */ + dev->mode_config.max_width = 4096; + dev->mode_config.max_height = 4096; + + dev->mode_config.funcs = &rockchip_drm_mode_config_funcs; +} diff --git a/drivers/gpu/drm/rockchip/rockchip_drm_fb.h b/drivers/gpu/drm/rockchip/rockchip_drm_fb.h new file mode 100644 index 0000000000000..09574d48226fc --- /dev/null +++ b/drivers/gpu/drm/rockchip/rockchip_drm_fb.h @@ -0,0 +1,28 @@ +/* + * Copyright (C) Fuzhou Rockchip Electronics Co.Ltd + * Author:Mark Yao + * + * This software is licensed under the terms of the GNU General Public + * License version 2, as published by the Free Software Foundation, and + * may be copied, distributed, and modified under those terms. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + */ + +#ifndef _ROCKCHIP_DRM_FB_H +#define _ROCKCHIP_DRM_FB_H + +struct drm_framebuffer * +rockchip_drm_framebuffer_init(struct drm_device *dev, + struct drm_mode_fb_cmd2 *mode_cmd, + struct drm_gem_object *obj); +void rockchip_drm_framebuffer_fini(struct drm_framebuffer *fb); + +void rockchip_drm_mode_config_init(struct drm_device *dev); + +struct drm_gem_object *rockchip_fb_get_gem_obj(struct drm_framebuffer *fb, + unsigned int plane); +#endif /* _ROCKCHIP_DRM_FB_H */ diff --git a/drivers/gpu/drm/rockchip/rockchip_drm_fbdev.c b/drivers/gpu/drm/rockchip/rockchip_drm_fbdev.c new file mode 100644 index 0000000000000..a5d889a8716bd --- /dev/null +++ b/drivers/gpu/drm/rockchip/rockchip_drm_fbdev.c @@ -0,0 +1,210 @@ +/* + * Copyright (C) Fuzhou Rockchip Electronics Co.Ltd + * Author:Mark Yao + * + * This software is licensed under the terms of the GNU General Public + * License version 2, as published by the Free Software Foundation, and + * may be copied, distributed, and modified under those terms. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + */ + +#include +#include +#include +#include + +#include "rockchip_drm_drv.h" +#include "rockchip_drm_gem.h" +#include "rockchip_drm_fb.h" + +#define PREFERRED_BPP 32 +#define to_drm_private(x) \ + container_of(x, struct rockchip_drm_private, fbdev_helper) + +static int rockchip_fbdev_mmap(struct fb_info *info, + struct vm_area_struct *vma) +{ + struct drm_fb_helper *helper = info->par; + struct rockchip_drm_private *private = to_drm_private(helper); + + return rockchip_gem_mmap_buf(private->fbdev_bo, vma); +} + +static struct fb_ops rockchip_drm_fbdev_ops = { + .owner = THIS_MODULE, + .fb_mmap = rockchip_fbdev_mmap, + .fb_fillrect = cfb_fillrect, + .fb_copyarea = cfb_copyarea, + .fb_imageblit = cfb_imageblit, + .fb_check_var = drm_fb_helper_check_var, + .fb_set_par = drm_fb_helper_set_par, + .fb_blank = drm_fb_helper_blank, + .fb_pan_display = drm_fb_helper_pan_display, + .fb_setcmap = drm_fb_helper_setcmap, +}; + +static int rockchip_drm_fbdev_create(struct drm_fb_helper *helper, + struct drm_fb_helper_surface_size *sizes) +{ + struct rockchip_drm_private *private = to_drm_private(helper); + struct drm_mode_fb_cmd2 mode_cmd = { 0 }; + struct drm_device *dev = helper->dev; + struct rockchip_gem_object *rk_obj; + struct drm_framebuffer *fb; + unsigned int bytes_per_pixel; + unsigned long offset; + struct fb_info *fbi; + size_t size; + int ret; + + bytes_per_pixel = DIV_ROUND_UP(sizes->surface_bpp, 8); + + mode_cmd.width = sizes->surface_width; + mode_cmd.height = sizes->surface_height; + mode_cmd.pitches[0] = sizes->surface_width * bytes_per_pixel; + mode_cmd.pixel_format = drm_mode_legacy_fb_format(sizes->surface_bpp, + sizes->surface_depth); + + size = mode_cmd.pitches[0] * mode_cmd.height; + + rk_obj = rockchip_gem_create_object(dev, size); + if (IS_ERR(rk_obj)) + return -ENOMEM; + + private->fbdev_bo = &rk_obj->base; + + fbi = framebuffer_alloc(0, dev->dev); + if (!fbi) { + dev_err(dev->dev, "Failed to allocate framebuffer info.\n"); + ret = -ENOMEM; + goto err_rockchip_gem_free_object; + } + + helper->fb = rockchip_drm_framebuffer_init(dev, &mode_cmd, + private->fbdev_bo); + if (IS_ERR(helper->fb)) { + dev_err(dev->dev, "Failed to allocate DRM framebuffer.\n"); + ret = PTR_ERR(helper->fb); + goto err_framebuffer_release; + } + + helper->fbdev = fbi; + + fbi->par = helper; + fbi->flags = FBINFO_FLAG_DEFAULT; + fbi->fbops = &rockchip_drm_fbdev_ops; + + ret = fb_alloc_cmap(&fbi->cmap, 256, 0); + if (ret) { + dev_err(dev->dev, "Failed to allocate color map.\n"); + goto err_drm_framebuffer_unref; + } + + fb = helper->fb; + drm_fb_helper_fill_fix(fbi, fb->pitches[0], fb->depth); + drm_fb_helper_fill_var(fbi, helper, fb->width, fb->height); + + offset = fbi->var.xoffset * bytes_per_pixel; + offset += fbi->var.yoffset * fb->pitches[0]; + + dev->mode_config.fb_base = 0; + fbi->screen_base = rk_obj->kvaddr + offset; + fbi->screen_size = rk_obj->base.size; + fbi->fix.smem_len = rk_obj->base.size; + + DRM_DEBUG_KMS("FB [%dx%d]-%d kvaddr=%p offset=%ld size=%d\n", + fb->width, fb->height, fb->depth, rk_obj->kvaddr, + offset, size); + return 0; + +err_drm_framebuffer_unref: + drm_framebuffer_unreference(helper->fb); +err_framebuffer_release: + framebuffer_release(fbi); +err_rockchip_gem_free_object: + rockchip_gem_free_object(&rk_obj->base); + return ret; +} + +static const struct drm_fb_helper_funcs rockchip_drm_fb_helper_funcs = { + .fb_probe = rockchip_drm_fbdev_create, +}; + +int rockchip_drm_fbdev_init(struct drm_device *dev) +{ + struct rockchip_drm_private *private = dev->dev_private; + struct drm_fb_helper *helper; + unsigned int num_crtc; + int ret; + + if (!dev->mode_config.num_crtc || !dev->mode_config.num_connector) + return -EINVAL; + + num_crtc = dev->mode_config.num_crtc; + + helper = &private->fbdev_helper; + + drm_fb_helper_prepare(dev, helper, &rockchip_drm_fb_helper_funcs); + + ret = drm_fb_helper_init(dev, helper, num_crtc, ROCKCHIP_MAX_CONNECTOR); + if (ret < 0) { + dev_err(dev->dev, "Failed to initialize drm fb helper - %d.\n", + ret); + return ret; + } + + ret = drm_fb_helper_single_add_all_connectors(helper); + if (ret < 0) { + dev_err(dev->dev, "Failed to add connectors - %d.\n", ret); + goto err_drm_fb_helper_fini; + } + + /* disable all the possible outputs/crtcs before entering KMS mode */ + drm_helper_disable_unused_functions(dev); + + ret = drm_fb_helper_initial_config(helper, PREFERRED_BPP); + if (ret < 0) { + dev_err(dev->dev, "Failed to set initial hw config - %d.\n", + ret); + goto err_drm_fb_helper_fini; + } + + return 0; + +err_drm_fb_helper_fini: + drm_fb_helper_fini(helper); + return ret; +} + +void rockchip_drm_fbdev_fini(struct drm_device *dev) +{ + struct rockchip_drm_private *private = dev->dev_private; + struct drm_fb_helper *helper; + + helper = &private->fbdev_helper; + + if (helper->fbdev) { + struct fb_info *info; + int ret; + + info = helper->fbdev; + ret = unregister_framebuffer(info); + if (ret < 0) + DRM_DEBUG_KMS("failed unregister_framebuffer() - %d\n", + ret); + + if (info->cmap.len) + fb_dealloc_cmap(&info->cmap); + + framebuffer_release(info); + } + + if (helper->fb) + drm_framebuffer_unreference(helper->fb); + + drm_fb_helper_fini(helper); +} diff --git a/drivers/gpu/drm/rockchip/rockchip_drm_fbdev.h b/drivers/gpu/drm/rockchip/rockchip_drm_fbdev.h new file mode 100644 index 0000000000000..50432e9b5b37f --- /dev/null +++ b/drivers/gpu/drm/rockchip/rockchip_drm_fbdev.h @@ -0,0 +1,21 @@ +/* + * Copyright (C) Fuzhou Rockchip Electronics Co.Ltd + * Author:Mark Yao + * + * This software is licensed under the terms of the GNU General Public + * License version 2, as published by the Free Software Foundation, and + * may be copied, distributed, and modified under those terms. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + */ + +#ifndef _ROCKCHIP_DRM_FBDEV_H +#define _ROCKCHIP_DRM_FBDEV_H + +int rockchip_drm_fbdev_init(struct drm_device *dev); +void rockchip_drm_fbdev_fini(struct drm_device *dev); + +#endif /* _ROCKCHIP_DRM_FBDEV_H */ diff --git a/drivers/gpu/drm/rockchip/rockchip_drm_gem.c b/drivers/gpu/drm/rockchip/rockchip_drm_gem.c new file mode 100644 index 0000000000000..bc98a227dc767 --- /dev/null +++ b/drivers/gpu/drm/rockchip/rockchip_drm_gem.c @@ -0,0 +1,294 @@ +/* + * Copyright (C) Fuzhou Rockchip Electronics Co.Ltd + * Author:Mark Yao + * + * This software is licensed under the terms of the GNU General Public + * License version 2, as published by the Free Software Foundation, and + * may be copied, distributed, and modified under those terms. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + */ + +#include +#include +#include +#include + +#include + +#include "rockchip_drm_drv.h" +#include "rockchip_drm_gem.h" + +static int rockchip_gem_alloc_buf(struct rockchip_gem_object *rk_obj) +{ + struct drm_gem_object *obj = &rk_obj->base; + struct drm_device *drm = obj->dev; + + init_dma_attrs(&rk_obj->dma_attrs); + dma_set_attr(DMA_ATTR_WRITE_COMBINE, &rk_obj->dma_attrs); + + /* TODO(djkurtz): Use DMA_ATTR_NO_KERNEL_MAPPING except for fbdev */ + rk_obj->kvaddr = dma_alloc_attrs(drm->dev, obj->size, + &rk_obj->dma_addr, GFP_KERNEL, + &rk_obj->dma_attrs); + if (IS_ERR(rk_obj->kvaddr)) { + int ret = PTR_ERR(rk_obj->kvaddr); + + DRM_ERROR("failed to allocate %#x byte dma buffer, %d", + obj->size, ret); + return ret; + } + + return 0; +} + +static void rockchip_gem_free_buf(struct rockchip_gem_object *rk_obj) +{ + struct drm_gem_object *obj = &rk_obj->base; + struct drm_device *drm = obj->dev; + + dma_free_attrs(drm->dev, obj->size, rk_obj->kvaddr, rk_obj->dma_addr, + &rk_obj->dma_attrs); +} + +int rockchip_gem_mmap_buf(struct drm_gem_object *obj, + struct vm_area_struct *vma) +{ + struct rockchip_gem_object *rk_obj = to_rockchip_obj(obj); + struct drm_device *drm = obj->dev; + unsigned long vm_size; + + vma->vm_flags |= VM_IO | VM_DONTEXPAND | VM_DONTDUMP; + vm_size = vma->vm_end - vma->vm_start; + + if (vm_size > obj->size) + return -EINVAL; + + return dma_mmap_attrs(drm->dev, vma, rk_obj->kvaddr, rk_obj->dma_addr, + obj->size, &rk_obj->dma_attrs); +} + +/* drm driver mmap file operations */ +int rockchip_gem_mmap(struct file *filp, struct vm_area_struct *vma) +{ + struct drm_file *priv = filp->private_data; + struct drm_device *dev = priv->minor->dev; + struct drm_gem_object *obj; + struct drm_vma_offset_node *node; + int ret; + + if (drm_device_is_unplugged(dev)) + return -ENODEV; + + mutex_lock(&dev->struct_mutex); + + node = drm_vma_offset_exact_lookup(dev->vma_offset_manager, + vma->vm_pgoff, + vma_pages(vma)); + if (!node) { + mutex_unlock(&dev->struct_mutex); + DRM_ERROR("failed to find vma node.\n"); + return -EINVAL; + } else if (!drm_vma_node_is_allowed(node, filp)) { + mutex_unlock(&dev->struct_mutex); + return -EACCES; + } + + obj = container_of(node, struct drm_gem_object, vma_node); + ret = rockchip_gem_mmap_buf(obj, vma); + + mutex_unlock(&dev->struct_mutex); + + return ret; +} + +struct rockchip_gem_object * + rockchip_gem_create_object(struct drm_device *drm, unsigned int size) +{ + struct rockchip_gem_object *rk_obj; + struct drm_gem_object *obj; + int ret; + + size = round_up(size, PAGE_SIZE); + + rk_obj = kzalloc(sizeof(*rk_obj), GFP_KERNEL); + if (!rk_obj) + return ERR_PTR(-ENOMEM); + + obj = &rk_obj->base; + + drm_gem_private_object_init(drm, obj, size); + + ret = rockchip_gem_alloc_buf(rk_obj); + if (ret) + goto err_free_rk_obj; + + return rk_obj; + +err_free_rk_obj: + kfree(rk_obj); + return ERR_PTR(ret); +} + +/* + * rockchip_gem_free_object - (struct drm_driver)->gem_free_object callback + * function + */ +void rockchip_gem_free_object(struct drm_gem_object *obj) +{ + struct rockchip_gem_object *rk_obj; + + drm_gem_free_mmap_offset(obj); + + rk_obj = to_rockchip_obj(obj); + + rockchip_gem_free_buf(rk_obj); + + kfree(rk_obj); +} + +/* + * rockchip_gem_create_with_handle - allocate an object with the given + * size and create a gem handle on it + * + * returns a struct rockchip_gem_object* on success or ERR_PTR values + * on failure. + */ +static struct rockchip_gem_object * +rockchip_gem_create_with_handle(struct drm_file *file_priv, + struct drm_device *drm, unsigned int size, + unsigned int *handle) +{ + struct rockchip_gem_object *rk_obj; + struct drm_gem_object *obj; + int ret; + + rk_obj = rockchip_gem_create_object(drm, size); + if (IS_ERR(rk_obj)) + return ERR_CAST(rk_obj); + + obj = &rk_obj->base; + + /* + * allocate a id of idr table where the obj is registered + * and handle has the id what user can see. + */ + ret = drm_gem_handle_create(file_priv, obj, handle); + if (ret) + goto err_handle_create; + + /* drop reference from allocate - handle holds it now. */ + drm_gem_object_unreference_unlocked(obj); + + return rk_obj; + +err_handle_create: + rockchip_gem_free_object(obj); + + return ERR_PTR(ret); +} + +int rockchip_gem_dumb_map_offset(struct drm_file *file_priv, + struct drm_device *dev, uint32_t handle, + uint64_t *offset) +{ + struct drm_gem_object *obj; + int ret; + + mutex_lock(&dev->struct_mutex); + + obj = drm_gem_object_lookup(dev, file_priv, handle); + if (!obj) { + DRM_ERROR("failed to lookup gem object.\n"); + ret = -EINVAL; + goto unlock; + } + + ret = drm_gem_create_mmap_offset(obj); + if (ret) + goto out; + + *offset = drm_vma_node_offset_addr(&obj->vma_node); + DRM_DEBUG_KMS("offset = 0x%llx\n", *offset); + +out: + drm_gem_object_unreference(obj); +unlock: + mutex_unlock(&dev->struct_mutex); + return ret; +} + +/* + * rockchip_gem_dumb_create - (struct drm_driver)->dumb_create callback + * function + * + * This aligns the pitch and size arguments to the minimum required. wrap + * this into your own function if you need bigger alignment. + */ +int rockchip_gem_dumb_create(struct drm_file *file_priv, + struct drm_device *dev, + struct drm_mode_create_dumb *args) +{ + struct rockchip_gem_object *rk_obj; + int min_pitch = DIV_ROUND_UP(args->width * args->bpp, 8); + + /* + * align to 64 bytes since Mali requires it. + */ + min_pitch = ALIGN(min_pitch, 64); + + if (args->pitch < min_pitch) + args->pitch = min_pitch; + + if (args->size < args->pitch * args->height) + args->size = args->pitch * args->height; + + rk_obj = rockchip_gem_create_with_handle(file_priv, dev, args->size, + &args->handle); + + return PTR_ERR_OR_ZERO(rk_obj); +} + +/* + * Allocate a sg_table for this GEM object. + * Note: Both the table's contents, and the sg_table itself must be freed by + * the caller. + * Returns a pointer to the newly allocated sg_table, or an ERR_PTR() error. + */ +struct sg_table *rockchip_gem_prime_get_sg_table(struct drm_gem_object *obj) +{ + struct rockchip_gem_object *rk_obj = to_rockchip_obj(obj); + struct drm_device *drm = obj->dev; + struct sg_table *sgt; + int ret; + + sgt = kzalloc(sizeof(*sgt), GFP_KERNEL); + if (!sgt) + return ERR_PTR(-ENOMEM); + + ret = dma_get_sgtable_attrs(drm->dev, sgt, rk_obj->kvaddr, + rk_obj->dma_addr, obj->size, + &rk_obj->dma_attrs); + if (ret) { + DRM_ERROR("failed to allocate sgt, %d\n", ret); + kfree(sgt); + return ERR_PTR(ret); + } + + return sgt; +} + +void *rockchip_gem_prime_vmap(struct drm_gem_object *obj) +{ + struct rockchip_gem_object *rk_obj = to_rockchip_obj(obj); + + return rk_obj->kvaddr; +} + +void rockchip_gem_prime_vunmap(struct drm_gem_object *obj, void *vaddr) +{ + /* Nothing to do */ +} diff --git a/drivers/gpu/drm/rockchip/rockchip_drm_gem.h b/drivers/gpu/drm/rockchip/rockchip_drm_gem.h new file mode 100644 index 0000000000000..67bcebe90003d --- /dev/null +++ b/drivers/gpu/drm/rockchip/rockchip_drm_gem.h @@ -0,0 +1,54 @@ +/* + * Copyright (C) Fuzhou Rockchip Electronics Co.Ltd + * Author:Mark Yao + * + * This software is licensed under the terms of the GNU General Public + * License version 2, as published by the Free Software Foundation, and + * may be copied, distributed, and modified under those terms. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + */ + +#ifndef _ROCKCHIP_DRM_GEM_H +#define _ROCKCHIP_DRM_GEM_H + +#define to_rockchip_obj(x) container_of(x, struct rockchip_gem_object, base) + +struct rockchip_gem_object { + struct drm_gem_object base; + unsigned int flags; + + void *kvaddr; + dma_addr_t dma_addr; + struct dma_attrs dma_attrs; +}; + +struct sg_table *rockchip_gem_prime_get_sg_table(struct drm_gem_object *obj); +struct drm_gem_object * +rockchip_gem_prime_import_sg_table(struct drm_device *dev, size_t size, + struct sg_table *sgt); +void *rockchip_gem_prime_vmap(struct drm_gem_object *obj); +void rockchip_gem_prime_vunmap(struct drm_gem_object *obj, void *vaddr); + +/* drm driver mmap file operations */ +int rockchip_gem_mmap(struct file *filp, struct vm_area_struct *vma); + +/* mmap a gem object to userspace. */ +int rockchip_gem_mmap_buf(struct drm_gem_object *obj, + struct vm_area_struct *vma); + +struct rockchip_gem_object * + rockchip_gem_create_object(struct drm_device *drm, unsigned int size); + +void rockchip_gem_free_object(struct drm_gem_object *obj); + +int rockchip_gem_dumb_create(struct drm_file *file_priv, + struct drm_device *dev, + struct drm_mode_create_dumb *args); +int rockchip_gem_dumb_map_offset(struct drm_file *file_priv, + struct drm_device *dev, uint32_t handle, + uint64_t *offset); +#endif /* _ROCKCHIP_DRM_GEM_H */ diff --git a/drivers/gpu/drm/rockchip/rockchip_drm_vop.c b/drivers/gpu/drm/rockchip/rockchip_drm_vop.c new file mode 100644 index 0000000000000..e7ca25b3fb386 --- /dev/null +++ b/drivers/gpu/drm/rockchip/rockchip_drm_vop.c @@ -0,0 +1,1455 @@ +/* + * Copyright (C) Fuzhou Rockchip Electronics Co.Ltd + * Author:Mark Yao + * + * This software is licensed under the terms of the GNU General Public + * License version 2, as published by the Free Software Foundation, and + * may be copied, distributed, and modified under those terms. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + */ + +#include +#include +#include +#include +#include + +#include +#include +#include +#include +#include +#include +#include + +#include +#include + +#include "rockchip_drm_drv.h" +#include "rockchip_drm_gem.h" +#include "rockchip_drm_fb.h" +#include "rockchip_drm_vop.h" + +#define VOP_REG(off, _mask, s) \ + {.offset = off, \ + .mask = _mask, \ + .shift = s,} + +#define __REG_SET_RELAXED(x, off, mask, shift, v) \ + vop_mask_write_relaxed(x, off, (mask) << shift, (v) << shift) +#define __REG_SET_NORMAL(x, off, mask, shift, v) \ + vop_mask_write(x, off, (mask) << shift, (v) << shift) + +#define REG_SET(x, base, reg, v, mode) \ + __REG_SET_##mode(x, base + reg.offset, reg.mask, reg.shift, v) + +#define VOP_WIN_SET(x, win, name, v) \ + REG_SET(x, win->base, win->phy->name, v, RELAXED) +#define VOP_CTRL_SET(x, name, v) \ + REG_SET(x, 0, (x)->data->ctrl->name, v, NORMAL) + +#define VOP_WIN_GET(x, win, name) \ + vop_read_reg(x, win->base, &win->phy->name) + +#define VOP_WIN_GET_YRGBADDR(vop, win) \ + vop_readl(vop, win->base + win->phy->yrgb_mst.offset) + +#define to_vop(x) container_of(x, struct vop, crtc) +#define to_vop_win(x) container_of(x, struct vop_win, base) + +struct vop_win_state { + struct list_head head; + struct drm_framebuffer *fb; + dma_addr_t yrgb_mst; + struct drm_pending_vblank_event *event; +}; + +struct vop_win { + struct drm_plane base; + const struct vop_win_data *data; + struct vop *vop; + + struct list_head pending; + struct vop_win_state *active; +}; + +struct vop { + struct drm_crtc crtc; + struct device *dev; + struct drm_device *drm_dev; + unsigned int dpms; + + int connector_type; + int connector_out_mode; + + /* mutex vsync_ work */ + struct mutex vsync_mutex; + bool vsync_work_pending; + + const struct vop_data *data; + + uint32_t *regsbak; + void __iomem *regs; + + /* physical map length of vop register */ + uint32_t len; + + /* one time only one process allowed to config the register */ + spinlock_t reg_lock; + /* lock vop irq reg */ + spinlock_t irq_lock; + + unsigned int irq; + + /* vop AHP clk */ + struct clk *hclk; + /* vop dclk */ + struct clk *dclk; + /* vop share memory frequency */ + struct clk *aclk; + + /* vop dclk reset */ + struct reset_control *dclk_rst; + + int pipe; + + struct vop_win win[]; +}; + +enum vop_data_format { + VOP_FMT_ARGB8888 = 0, + VOP_FMT_RGB888, + VOP_FMT_RGB565, + VOP_FMT_YUV420SP = 4, + VOP_FMT_YUV422SP, + VOP_FMT_YUV444SP, +}; + +struct vop_reg_data { + uint32_t offset; + uint32_t value; +}; + +struct vop_reg { + uint32_t offset; + uint32_t shift; + uint32_t mask; +}; + +struct vop_ctrl { + struct vop_reg standby; + struct vop_reg data_blank; + struct vop_reg gate_en; + struct vop_reg mmu_en; + struct vop_reg rgb_en; + struct vop_reg edp_en; + struct vop_reg hdmi_en; + struct vop_reg mipi_en; + struct vop_reg out_mode; + struct vop_reg dither_down; + struct vop_reg dither_up; + struct vop_reg pin_pol; + + struct vop_reg htotal_pw; + struct vop_reg hact_st_end; + struct vop_reg vtotal_pw; + struct vop_reg vact_st_end; + struct vop_reg hpost_st_end; + struct vop_reg vpost_st_end; +}; + +struct vop_win_phy { + const uint32_t *data_formats; + uint32_t nformats; + + struct vop_reg enable; + struct vop_reg format; + struct vop_reg act_info; + struct vop_reg dsp_info; + struct vop_reg dsp_st; + struct vop_reg yrgb_mst; + struct vop_reg uv_mst; + struct vop_reg yrgb_vir; + struct vop_reg uv_vir; + + struct vop_reg dst_alpha_ctl; + struct vop_reg src_alpha_ctl; +}; + +struct vop_win_data { + uint32_t base; + const struct vop_win_phy *phy; + enum drm_plane_type type; +}; + +struct vop_data { + const struct vop_reg_data *init_table; + unsigned int table_size; + const struct vop_ctrl *ctrl; + const struct vop_win_data *win; + unsigned int win_size; +}; + +static const uint32_t formats_01[] = { + DRM_FORMAT_XRGB8888, + DRM_FORMAT_ARGB8888, + DRM_FORMAT_RGB888, + DRM_FORMAT_RGB565, + DRM_FORMAT_NV12, + DRM_FORMAT_NV16, + DRM_FORMAT_NV24, +}; + +static const uint32_t formats_234[] = { + DRM_FORMAT_XRGB8888, + DRM_FORMAT_ARGB8888, + DRM_FORMAT_RGB888, + DRM_FORMAT_RGB565, +}; + +static const struct vop_win_phy win01_data = { + .data_formats = formats_01, + .nformats = ARRAY_SIZE(formats_01), + .enable = VOP_REG(WIN0_CTRL0, 0x1, 0), + .format = VOP_REG(WIN0_CTRL0, 0x7, 1), + .act_info = VOP_REG(WIN0_ACT_INFO, 0x1fff1fff, 0), + .dsp_info = VOP_REG(WIN0_DSP_INFO, 0x0fff0fff, 0), + .dsp_st = VOP_REG(WIN0_DSP_ST, 0x1fff1fff, 0), + .yrgb_mst = VOP_REG(WIN0_YRGB_MST, 0xffffffff, 0), + .uv_mst = VOP_REG(WIN0_CBR_MST, 0xffffffff, 0), + .yrgb_vir = VOP_REG(WIN0_VIR, 0x3fff, 0), + .uv_vir = VOP_REG(WIN0_VIR, 0x3fff, 16), + .src_alpha_ctl = VOP_REG(WIN0_SRC_ALPHA_CTRL, 0xff, 0), + .dst_alpha_ctl = VOP_REG(WIN0_DST_ALPHA_CTRL, 0xff, 0), +}; + +static const struct vop_win_phy win23_data = { + .data_formats = formats_234, + .nformats = ARRAY_SIZE(formats_234), + .enable = VOP_REG(WIN2_CTRL0, 0x1, 0), + .format = VOP_REG(WIN2_CTRL0, 0x7, 1), + .dsp_info = VOP_REG(WIN2_DSP_INFO0, 0x0fff0fff, 0), + .dsp_st = VOP_REG(WIN2_DSP_ST0, 0x1fff1fff, 0), + .yrgb_mst = VOP_REG(WIN2_MST0, 0xffffffff, 0), + .yrgb_vir = VOP_REG(WIN2_VIR0_1, 0x1fff, 0), + .src_alpha_ctl = VOP_REG(WIN2_SRC_ALPHA_CTRL, 0xff, 0), + .dst_alpha_ctl = VOP_REG(WIN2_DST_ALPHA_CTRL, 0xff, 0), +}; + +static const struct vop_win_phy cursor_data = { + .data_formats = formats_234, + .nformats = ARRAY_SIZE(formats_234), + .enable = VOP_REG(HWC_CTRL0, 0x1, 0), + .format = VOP_REG(HWC_CTRL0, 0x7, 1), + .dsp_st = VOP_REG(HWC_DSP_ST, 0x1fff1fff, 0), + .yrgb_mst = VOP_REG(HWC_MST, 0xffffffff, 0), +}; + +static const struct vop_ctrl ctrl_data = { + .standby = VOP_REG(SYS_CTRL, 0x1, 22), + .gate_en = VOP_REG(SYS_CTRL, 0x1, 23), + .mmu_en = VOP_REG(SYS_CTRL, 0x1, 20), + .rgb_en = VOP_REG(SYS_CTRL, 0x1, 12), + .hdmi_en = VOP_REG(SYS_CTRL, 0x1, 13), + .edp_en = VOP_REG(SYS_CTRL, 0x1, 14), + .mipi_en = VOP_REG(SYS_CTRL, 0x1, 15), + .dither_down = VOP_REG(DSP_CTRL1, 0xf, 1), + .dither_up = VOP_REG(DSP_CTRL1, 0x1, 6), + .data_blank = VOP_REG(DSP_CTRL0, 0x1, 19), + .out_mode = VOP_REG(DSP_CTRL0, 0xf, 0), + .pin_pol = VOP_REG(DSP_CTRL0, 0xf, 4), + .htotal_pw = VOP_REG(DSP_HTOTAL_HS_END, 0x1fff1fff, 0), + .hact_st_end = VOP_REG(DSP_HACT_ST_END, 0x1fff1fff, 0), + .vtotal_pw = VOP_REG(DSP_VTOTAL_VS_END, 0x1fff1fff, 0), + .vact_st_end = VOP_REG(DSP_VACT_ST_END, 0x1fff1fff, 0), + .hpost_st_end = VOP_REG(POST_DSP_HACT_INFO, 0x1fff1fff, 0), + .vpost_st_end = VOP_REG(POST_DSP_VACT_INFO, 0x1fff1fff, 0), +}; + +static const struct vop_reg_data vop_init_reg_table[] = { + {SYS_CTRL, 0x00c00000}, + {DSP_CTRL0, 0x00000000}, + {WIN0_CTRL0, 0x00000080}, + {WIN1_CTRL0, 0x00000080}, +}; + +/* + * Note: rk3288 has a dedicated 'cursor' window, however, that window requires + * special support to get alpha blending working. For now, just use overlay + * window 1 for the drm cursor. + */ +static const struct vop_win_data rk3288_vop_win_data[] = { + { .base = 0x00, .phy = &win01_data, .type = DRM_PLANE_TYPE_PRIMARY }, + { .base = 0x40, .phy = &win01_data, .type = DRM_PLANE_TYPE_CURSOR }, + { .base = 0x00, .phy = &win23_data, .type = DRM_PLANE_TYPE_OVERLAY }, + { .base = 0x50, .phy = &win23_data, .type = DRM_PLANE_TYPE_OVERLAY }, + { .base = 0x00, .phy = &cursor_data, .type = DRM_PLANE_TYPE_OVERLAY }, +}; + +static const struct vop_data rk3288_vop = { + .init_table = vop_init_reg_table, + .table_size = ARRAY_SIZE(vop_init_reg_table), + .ctrl = &ctrl_data, + .win = rk3288_vop_win_data, + .win_size = ARRAY_SIZE(rk3288_vop_win_data), +}; + +static const struct of_device_id vop_driver_dt_match[] = { + { .compatible = "rockchip,rk3288-vop", + .data = &rk3288_vop }, + {}, +}; + +static inline void vop_writel(struct vop *vop, uint32_t offset, uint32_t v) +{ + writel(v, vop->regs + offset); + vop->regsbak[offset >> 2] = v; +} + +static inline uint32_t vop_readl(struct vop *vop, uint32_t offset) +{ + return readl(vop->regs + offset); +} + +static inline uint32_t vop_read_reg(struct vop *vop, uint32_t base, + const struct vop_reg *reg) +{ + return (vop_readl(vop, base + reg->offset) >> reg->shift) & reg->mask; +} + +static inline void vop_cfg_done(struct vop *vop) +{ + writel(0x01, vop->regs + REG_CFG_DONE); +} + +static inline void vop_mask_write(struct vop *vop, uint32_t offset, + uint32_t mask, uint32_t v) +{ + if (mask) { + uint32_t cached_val = vop->regsbak[offset >> 2]; + + cached_val = (cached_val & ~mask) | v; + writel(cached_val, vop->regs + offset); + vop->regsbak[offset >> 2] = cached_val; + } +} + +static inline void vop_mask_write_relaxed(struct vop *vop, uint32_t offset, + uint32_t mask, uint32_t v) +{ + if (mask) { + uint32_t cached_val = vop->regsbak[offset >> 2]; + + cached_val = (cached_val & ~mask) | v; + writel_relaxed(cached_val, vop->regs + offset); + vop->regsbak[offset >> 2] = cached_val; + } +} + +static enum vop_data_format vop_convert_format(uint32_t format) +{ + switch (format) { + case DRM_FORMAT_XRGB8888: + case DRM_FORMAT_ARGB8888: + return VOP_FMT_ARGB8888; + case DRM_FORMAT_RGB888: + return VOP_FMT_RGB888; + case DRM_FORMAT_RGB565: + return VOP_FMT_RGB565; + case DRM_FORMAT_NV12: + return VOP_FMT_YUV420SP; + case DRM_FORMAT_NV16: + return VOP_FMT_YUV422SP; + case DRM_FORMAT_NV24: + return VOP_FMT_YUV444SP; + default: + DRM_ERROR("unsupport format[%08x]\n", format); + return -EINVAL; + } +} + +static bool is_alpha_support(uint32_t format) +{ + switch (format) { + case DRM_FORMAT_ARGB8888: + return true; + default: + return false; + } +} + +static void vop_enable(struct drm_crtc *crtc) +{ + struct vop *vop = to_vop(crtc); + int ret; + + ret = clk_enable(vop->hclk); + if (ret < 0) { + dev_err(vop->dev, "failed to enable hclk - %d\n", ret); + return; + } + + ret = clk_enable(vop->dclk); + if (ret < 0) { + dev_err(vop->dev, "failed to enable dclk - %d\n", ret); + goto err_disable_hclk; + } + + ret = clk_enable(vop->aclk); + if (ret < 0) { + dev_err(vop->dev, "failed to enable aclk - %d\n", ret); + goto err_disable_dclk; + } + + /* + * Slave iommu shares power, irq and clock with vop. It was associated + * automatically with this master device via common driver code. + * Now that we have enabled the clock we attach it to the shared drm + * mapping. + */ + ret = rockchip_drm_dma_attach_device(vop->drm_dev, vop->dev); + if (ret) { + dev_err(vop->dev, "failed to attach dma mapping, %d\n", ret); + goto err_disable_aclk; + } + + spin_lock(&vop->reg_lock); + + VOP_CTRL_SET(vop, standby, 0); + + spin_unlock(&vop->reg_lock); + + enable_irq(vop->irq); + + drm_vblank_on(vop->drm_dev, vop->pipe); + + return; + +err_disable_aclk: + clk_disable(vop->aclk); +err_disable_dclk: + clk_disable(vop->dclk); +err_disable_hclk: + clk_disable(vop->hclk); +} + +static void vop_disable(struct drm_crtc *crtc) +{ + struct vop *vop = to_vop(crtc); + + drm_vblank_off(crtc->dev, vop->pipe); + + disable_irq(vop->irq); + + /* + * TODO: Since standby doesn't take effect until the next vblank, + * when we turn off dclk below, the vop is probably still active. + */ + spin_lock(&vop->reg_lock); + + VOP_CTRL_SET(vop, standby, 1); + + spin_unlock(&vop->reg_lock); + /* + * disable dclk to stop frame scan, so we can safely detach iommu, + */ + clk_disable(vop->dclk); + + rockchip_drm_dma_detach_device(vop->drm_dev, vop->dev); + + clk_disable(vop->aclk); + clk_disable(vop->hclk); +} + +/* + * Caller must hold vsync_mutex. + */ +static struct drm_framebuffer *vop_win_last_pending_fb(struct vop_win *vop_win) +{ + struct vop_win_state *last; + struct vop_win_state *active = vop_win->active; + + if (list_empty(&vop_win->pending)) + return active ? active->fb : NULL; + + last = list_last_entry(&vop_win->pending, struct vop_win_state, head); + return last ? last->fb : NULL; +} + +/* + * Caller must hold vsync_mutex. + */ +static int vop_win_queue_fb(struct vop_win *vop_win, + struct drm_framebuffer *fb, dma_addr_t yrgb_mst, + struct drm_pending_vblank_event *event) +{ + struct vop_win_state *state; + + state = kzalloc(sizeof(*state), GFP_KERNEL); + if (!state) + return -ENOMEM; + + state->fb = fb; + state->yrgb_mst = yrgb_mst; + state->event = event; + + list_add_tail(&state->head, &vop_win->pending); + + return 0; +} + +static int vop_update_plane_event(struct drm_plane *plane, + struct drm_crtc *crtc, + struct drm_framebuffer *fb, int crtc_x, + int crtc_y, unsigned int crtc_w, + unsigned int crtc_h, uint32_t src_x, + uint32_t src_y, uint32_t src_w, + uint32_t src_h, + struct drm_pending_vblank_event *event) +{ + struct vop_win *vop_win = to_vop_win(plane); + const struct vop_win_data *win = vop_win->data; + struct vop *vop = to_vop(crtc); + struct drm_gem_object *obj; + struct rockchip_gem_object *rk_obj; + unsigned long offset; + unsigned int actual_w; + unsigned int actual_h; + unsigned int dsp_stx; + unsigned int dsp_sty; + unsigned int y_vir_stride; + dma_addr_t yrgb_mst; + enum vop_data_format format; + uint32_t val; + bool is_alpha; + bool visible; + int ret; + struct drm_rect dest = { + .x1 = crtc_x, + .y1 = crtc_y, + .x2 = crtc_x + crtc_w, + .y2 = crtc_y + crtc_h, + }; + struct drm_rect src = { + /* 16.16 fixed point */ + .x1 = src_x, + .y1 = src_y, + .x2 = src_x + src_w, + .y2 = src_y + src_h, + }; + const struct drm_rect clip = { + .x2 = crtc->mode.hdisplay, + .y2 = crtc->mode.vdisplay, + }; + bool can_position = plane->type != DRM_PLANE_TYPE_PRIMARY; + + ret = drm_plane_helper_check_update(plane, crtc, fb, + &src, &dest, &clip, + DRM_PLANE_HELPER_NO_SCALING, + DRM_PLANE_HELPER_NO_SCALING, + can_position, false, &visible); + if (ret) + return ret; + + if (!visible) + return 0; + + is_alpha = is_alpha_support(fb->pixel_format); + format = vop_convert_format(fb->pixel_format); + if (format < 0) + return format; + + obj = rockchip_fb_get_gem_obj(fb, 0); + if (!obj) { + DRM_ERROR("fail to get rockchip gem object from framebuffer\n"); + return -EINVAL; + } + + rk_obj = to_rockchip_obj(obj); + + actual_w = (src.x2 - src.x1) >> 16; + actual_h = (src.y2 - src.y1) >> 16; + crtc_x = max(0, crtc_x); + crtc_y = max(0, crtc_y); + + dsp_stx = crtc_x + crtc->mode.htotal - crtc->mode.hsync_start; + dsp_sty = crtc_y + crtc->mode.vtotal - crtc->mode.vsync_start; + + offset = (src.x1 >> 16) * (fb->bits_per_pixel >> 3); + offset += (src.y1 >> 16) * fb->pitches[0]; + yrgb_mst = rk_obj->dma_addr + offset; + + y_vir_stride = fb->pitches[0] / (fb->bits_per_pixel >> 3); + + /* + * If this plane update changes the plane's framebuffer, (or more + * precisely, if this update has a different framebuffer than the last + * update), enqueue it so we can track when it completes. + * + * Only when we discover that this update has completed, can we + * unreference any previous framebuffers. + */ + mutex_lock(&vop->vsync_mutex); + if (fb != vop_win_last_pending_fb(vop_win)) { + ret = drm_vblank_get(plane->dev, vop->pipe); + if (ret) { + DRM_ERROR("failed to get vblank, %d\n", ret); + mutex_unlock(&vop->vsync_mutex); + return ret; + } + + drm_framebuffer_reference(fb); + + ret = vop_win_queue_fb(vop_win, fb, yrgb_mst, event); + if (ret) { + drm_vblank_put(plane->dev, vop->pipe); + mutex_unlock(&vop->vsync_mutex); + return ret; + } + + vop->vsync_work_pending = true; + } + mutex_unlock(&vop->vsync_mutex); + + spin_lock(&vop->reg_lock); + + VOP_WIN_SET(vop, win, format, format); + VOP_WIN_SET(vop, win, yrgb_vir, y_vir_stride); + VOP_WIN_SET(vop, win, yrgb_mst, yrgb_mst); + val = (actual_h - 1) << 16; + val |= (actual_w - 1) & 0xffff; + VOP_WIN_SET(vop, win, act_info, val); + VOP_WIN_SET(vop, win, dsp_info, val); + val = (dsp_sty - 1) << 16; + val |= (dsp_stx - 1) & 0xffff; + VOP_WIN_SET(vop, win, dsp_st, val); + + if (is_alpha) { + VOP_WIN_SET(vop, win, dst_alpha_ctl, + DST_FACTOR_M0(ALPHA_SRC_INVERSE)); + val = SRC_ALPHA_EN(1) | SRC_COLOR_M0(ALPHA_SRC_PRE_MUL) | + SRC_ALPHA_M0(ALPHA_STRAIGHT) | + SRC_BLEND_M0(ALPHA_PER_PIX) | + SRC_ALPHA_CAL_M0(ALPHA_NO_SATURATION) | + SRC_FACTOR_M0(ALPHA_ONE); + VOP_WIN_SET(vop, win, src_alpha_ctl, val); + } else { + VOP_WIN_SET(vop, win, src_alpha_ctl, SRC_ALPHA_EN(0)); + } + + VOP_WIN_SET(vop, win, enable, 1); + + vop_cfg_done(vop); + spin_unlock(&vop->reg_lock); + + return 0; +} + +static int vop_update_plane(struct drm_plane *plane, struct drm_crtc *crtc, + struct drm_framebuffer *fb, int crtc_x, int crtc_y, + unsigned int crtc_w, unsigned int crtc_h, + uint32_t src_x, uint32_t src_y, uint32_t src_w, + uint32_t src_h) +{ + return vop_update_plane_event(plane, crtc, fb, crtc_x, crtc_y, crtc_w, + crtc_h, src_x, src_y, src_w, src_h, + NULL); +} + +static int vop_update_primary_plane(struct drm_crtc *crtc, + struct drm_pending_vblank_event *event) +{ + unsigned int crtc_w, crtc_h; + + crtc_w = crtc->primary->fb->width - crtc->x; + crtc_h = crtc->primary->fb->height - crtc->y; + + return vop_update_plane_event(crtc->primary, crtc, crtc->primary->fb, + 0, 0, crtc_w, crtc_h, crtc->x << 16, + crtc->y << 16, crtc_w << 16, + crtc_h << 16, event); +} + +static int vop_disable_plane(struct drm_plane *plane) +{ + struct vop_win *vop_win = to_vop_win(plane); + const struct vop_win_data *win = vop_win->data; + struct vop *vop; + int ret; + + if (!plane->crtc) + return 0; + + vop = to_vop(plane->crtc); + + ret = drm_vblank_get(plane->dev, vop->pipe); + if (ret) { + DRM_ERROR("failed to get vblank, %d\n", ret); + return ret; + } + + mutex_lock(&vop->vsync_mutex); + + ret = vop_win_queue_fb(vop_win, NULL, 0, NULL); + if (ret) { + drm_vblank_put(plane->dev, vop->pipe); + mutex_unlock(&vop->vsync_mutex); + return ret; + } + + vop->vsync_work_pending = true; + mutex_unlock(&vop->vsync_mutex); + + spin_lock(&vop->reg_lock); + VOP_WIN_SET(vop, win, enable, 0); + vop_cfg_done(vop); + spin_unlock(&vop->reg_lock); + + return 0; +} + +static void vop_plane_destroy(struct drm_plane *plane) +{ + vop_disable_plane(plane); + drm_plane_cleanup(plane); +} + +static const struct drm_plane_funcs vop_plane_funcs = { + .update_plane = vop_update_plane, + .disable_plane = vop_disable_plane, + .destroy = vop_plane_destroy, +}; + +int rockchip_drm_crtc_mode_config(struct drm_crtc *crtc, + int connector_type, + int out_mode) +{ + struct vop *vop = to_vop(crtc); + + vop->connector_type = connector_type; + vop->connector_out_mode = out_mode; + + return 0; +} + +static int vop_crtc_enable_vblank(struct drm_crtc *crtc) +{ + struct vop *vop = to_vop(crtc); + unsigned long flags; + + if (vop->dpms != DRM_MODE_DPMS_ON) + return -EPERM; + + spin_lock_irqsave(&vop->irq_lock, flags); + + vop_mask_write(vop, INTR_CTRL0, FS_INTR_MASK, FS_INTR_EN(1)); + + spin_unlock_irqrestore(&vop->irq_lock, flags); + + return 0; +} + +static void vop_crtc_disable_vblank(struct drm_crtc *crtc) +{ + struct vop *vop = to_vop(crtc); + unsigned long flags; + + if (vop->dpms != DRM_MODE_DPMS_ON) + return; + spin_lock_irqsave(&vop->irq_lock, flags); + vop_mask_write(vop, INTR_CTRL0, FS_INTR_MASK, FS_INTR_EN(0)); + spin_unlock_irqrestore(&vop->irq_lock, flags); +} + +static const struct rockchip_crtc_funcs private_crtc_funcs = { + .enable_vblank = vop_crtc_enable_vblank, + .disable_vblank = vop_crtc_disable_vblank, +}; + +static void vop_crtc_dpms(struct drm_crtc *crtc, int mode) +{ + struct vop *vop = to_vop(crtc); + + DRM_DEBUG_KMS("crtc[%d] mode[%d]\n", crtc->base.id, mode); + + if (vop->dpms == mode) { + DRM_DEBUG_KMS("desired dpms mode is same as previous one.\n"); + return; + } + + switch (mode) { + case DRM_MODE_DPMS_ON: + vop_enable(crtc); + break; + case DRM_MODE_DPMS_STANDBY: + case DRM_MODE_DPMS_SUSPEND: + case DRM_MODE_DPMS_OFF: + vop_disable(crtc); + break; + default: + DRM_DEBUG_KMS("unspecified mode %d\n", mode); + break; + } + + vop->dpms = mode; +} + +static void vop_crtc_prepare(struct drm_crtc *crtc) +{ + vop_crtc_dpms(crtc, DRM_MODE_DPMS_ON); +} + +static bool vop_crtc_mode_fixup(struct drm_crtc *crtc, + const struct drm_display_mode *mode, + struct drm_display_mode *adjusted_mode) +{ + if (adjusted_mode->htotal == 0 || adjusted_mode->vtotal == 0) + return false; + + return true; +} + +static int vop_crtc_mode_set_base(struct drm_crtc *crtc, int x, int y, + struct drm_framebuffer *old_fb) +{ + int ret; + + crtc->x = x; + crtc->y = y; + + ret = vop_update_primary_plane(crtc, NULL); + if (ret < 0) { + DRM_ERROR("fail to update plane\n"); + return ret; + } + + return 0; +} + +static int vop_crtc_mode_set(struct drm_crtc *crtc, + struct drm_display_mode *mode, + struct drm_display_mode *adjusted_mode, + int x, int y, struct drm_framebuffer *fb) +{ + struct vop *vop = to_vop(crtc); + u16 hsync_len = adjusted_mode->hsync_end - adjusted_mode->hsync_start; + u16 hdisplay = adjusted_mode->hdisplay; + u16 htotal = adjusted_mode->htotal; + u16 hact_st = adjusted_mode->htotal - adjusted_mode->hsync_start; + u16 hact_end = hact_st + hdisplay; + u16 vdisplay = adjusted_mode->vdisplay; + u16 vtotal = adjusted_mode->vtotal; + u16 vsync_len = adjusted_mode->vsync_end - adjusted_mode->vsync_start; + u16 vact_st = adjusted_mode->vtotal - adjusted_mode->vsync_start; + u16 vact_end = vact_st + vdisplay; + int ret; + uint32_t val; + + /* + * disable dclk to stop frame scan, so that we can safe config mode and + * enable iommu. + */ + clk_disable(vop->dclk); + + switch (vop->connector_type) { + case DRM_MODE_CONNECTOR_LVDS: + VOP_CTRL_SET(vop, rgb_en, 1); + break; + case DRM_MODE_CONNECTOR_eDP: + VOP_CTRL_SET(vop, edp_en, 1); + break; + case DRM_MODE_CONNECTOR_HDMIA: + VOP_CTRL_SET(vop, hdmi_en, 1); + break; + default: + DRM_ERROR("unsupport connector_type[%d]\n", + vop->connector_type); + return -EINVAL; + }; + VOP_CTRL_SET(vop, out_mode, vop->connector_out_mode); + + val = 0x8; + val |= (adjusted_mode->flags & DRM_MODE_FLAG_NHSYNC) ? 1 : 0; + val |= (adjusted_mode->flags & DRM_MODE_FLAG_NVSYNC) ? (1 << 1) : 0; + VOP_CTRL_SET(vop, pin_pol, val); + + VOP_CTRL_SET(vop, htotal_pw, (htotal << 16) | hsync_len); + val = hact_st << 16; + val |= hact_end; + VOP_CTRL_SET(vop, hact_st_end, val); + VOP_CTRL_SET(vop, hpost_st_end, val); + + VOP_CTRL_SET(vop, vtotal_pw, (vtotal << 16) | vsync_len); + val = vact_st << 16; + val |= vact_end; + VOP_CTRL_SET(vop, vact_st_end, val); + VOP_CTRL_SET(vop, vpost_st_end, val); + + ret = vop_crtc_mode_set_base(crtc, x, y, fb); + if (ret) + return ret; + + /* + * reset dclk, take all mode config affect, so the clk would run in + * correct frame. + */ + reset_control_assert(vop->dclk_rst); + usleep_range(10, 20); + reset_control_deassert(vop->dclk_rst); + + clk_set_rate(vop->dclk, adjusted_mode->clock * 1000); + ret = clk_enable(vop->dclk); + if (ret < 0) { + dev_err(vop->dev, "failed to enable dclk - %d\n", ret); + return ret; + } + + return 0; +} + +static void vop_crtc_commit(struct drm_crtc *crtc) +{ +} + +static const struct drm_crtc_helper_funcs vop_crtc_helper_funcs = { + .dpms = vop_crtc_dpms, + .prepare = vop_crtc_prepare, + .mode_fixup = vop_crtc_mode_fixup, + .mode_set = vop_crtc_mode_set, + .mode_set_base = vop_crtc_mode_set_base, + .commit = vop_crtc_commit, +}; + +static int vop_crtc_page_flip(struct drm_crtc *crtc, + struct drm_framebuffer *fb, + struct drm_pending_vblank_event *event, + uint32_t page_flip_flags) +{ + struct vop *vop = to_vop(crtc); + struct drm_framebuffer *old_fb = crtc->primary->fb; + int ret; + + /* when the page flip is requested, crtc's dpms should be on */ + if (vop->dpms > DRM_MODE_DPMS_ON) { + DRM_DEBUG("failed page flip request at dpms[%d].\n", vop->dpms); + return 0; + } + + crtc->primary->fb = fb; + + ret = vop_update_primary_plane(crtc, event); + if (ret) + crtc->primary->fb = old_fb; + + return ret; +} + +static void vop_win_state_complete(struct vop_win *vop_win, + struct vop_win_state *state) +{ + struct vop *vop = vop_win->vop; + struct drm_crtc *crtc = &vop->crtc; + struct drm_device *drm = crtc->dev; + unsigned long flags; + + if (state->event) { + spin_lock_irqsave(&drm->event_lock, flags); + drm_send_vblank_event(drm, -1, state->event); + spin_unlock_irqrestore(&drm->event_lock, flags); + } + + list_del(&state->head); + drm_vblank_put(crtc->dev, vop->pipe); +} + +static void vop_crtc_destroy(struct drm_crtc *crtc) +{ + drm_crtc_cleanup(crtc); +} + +static const struct drm_crtc_funcs vop_crtc_funcs = { + .set_config = drm_crtc_helper_set_config, + .page_flip = vop_crtc_page_flip, + .destroy = vop_crtc_destroy, +}; + +static bool vop_win_state_is_active(struct vop_win *vop_win, + struct vop_win_state *state) +{ + bool active = false; + + if (state->fb) { + dma_addr_t yrgb_mst; + + /* check yrgb_mst to tell if pending_fb is now front */ + yrgb_mst = VOP_WIN_GET_YRGBADDR(vop_win->vop, vop_win->data); + + active = (yrgb_mst == state->yrgb_mst); + } else { + bool enabled; + + /* if enable bit is clear, plane is now disabled */ + enabled = VOP_WIN_GET(vop_win->vop, vop_win->data, enable); + + active = (enabled == 0); + } + + return active; +} + +static void vop_win_state_destroy(struct vop_win_state *state) +{ + struct drm_framebuffer *fb = state->fb; + + if (fb) + drm_framebuffer_unreference(fb); + + kfree(state); +} + +static void vop_win_update_state(struct vop_win *vop_win) +{ + struct vop_win_state *state, *n, *new_active = NULL; + + /* Check if any pending states are now active */ + list_for_each_entry(state, &vop_win->pending, head) + if (vop_win_state_is_active(vop_win, state)) { + new_active = state; + break; + } + + if (!new_active) + return; + + /* + * Destroy any 'skipped' pending states - states that were queued + * before the newly active state. + */ + list_for_each_entry_safe(state, n, &vop_win->pending, head) { + if (state == new_active) + break; + vop_win_state_complete(vop_win, state); + vop_win_state_destroy(state); + } + + vop_win_state_complete(vop_win, new_active); + + if (vop_win->active) + vop_win_state_destroy(vop_win->active); + vop_win->active = new_active; +} + +static bool vop_win_has_pending_state(struct vop_win *vop_win) +{ + return !list_empty(&vop_win->pending); +} + +static irqreturn_t vop_isr_thread(int irq, void *data) +{ + struct vop *vop = data; + const struct vop_data *vop_data = vop->data; + unsigned int i; + + mutex_lock(&vop->vsync_mutex); + + if (!vop->vsync_work_pending) + goto done; + + vop->vsync_work_pending = false; + + for (i = 0; i < vop_data->win_size; i++) { + struct vop_win *vop_win = &vop->win[i]; + + vop_win_update_state(vop_win); + if (vop_win_has_pending_state(vop_win)) + vop->vsync_work_pending = true; + } + +done: + mutex_unlock(&vop->vsync_mutex); + + return IRQ_HANDLED; +} + +static irqreturn_t vop_isr(int irq, void *data) +{ + struct vop *vop = data; + uint32_t intr0_reg, active_irqs; + unsigned long flags; + + /* + * INTR_CTRL0 register has interrupt status, enable and clear bits, we + * must hold irq_lock to avoid a race with enable/disable_vblank(). + */ + spin_lock_irqsave(&vop->irq_lock, flags); + intr0_reg = vop_readl(vop, INTR_CTRL0); + active_irqs = intr0_reg & INTR_MASK; + /* Clear all active interrupt sources */ + if (active_irqs) + vop_writel(vop, INTR_CTRL0, + intr0_reg | (active_irqs << INTR_CLR_SHIFT)); + spin_unlock_irqrestore(&vop->irq_lock, flags); + + /* This is expected for vop iommu irqs, since the irq is shared */ + if (!active_irqs) + return IRQ_NONE; + + /* Only Frame Start Interrupt is enabled; other irqs are spurious. */ + if (!(active_irqs & FS_INTR)) { + DRM_ERROR("Unknown VOP IRQs: %#02x\n", active_irqs); + return IRQ_NONE; + } + + drm_handle_vblank(vop->drm_dev, vop->pipe); + + return (vop->vsync_work_pending) ? IRQ_WAKE_THREAD : IRQ_HANDLED; +} + +static int vop_create_crtc(struct vop *vop) +{ + const struct vop_data *vop_data = vop->data; + struct device *dev = vop->dev; + struct drm_device *drm_dev = vop->drm_dev; + struct drm_plane *primary = NULL, *cursor = NULL, *plane; + struct drm_crtc *crtc = &vop->crtc; + struct device_node *port; + int ret; + int i; + + /* + * Create drm_plane for primary and cursor planes first, since we need + * to pass them to drm_crtc_init_with_planes, which sets the + * "possible_crtcs" to the newly initialized crtc. + */ + for (i = 0; i < vop_data->win_size; i++) { + struct vop_win *vop_win = &vop->win[i]; + const struct vop_win_data *win_data = vop_win->data; + + if (win_data->type != DRM_PLANE_TYPE_PRIMARY && + win_data->type != DRM_PLANE_TYPE_CURSOR) + continue; + + ret = drm_universal_plane_init(vop->drm_dev, &vop_win->base, + 0, &vop_plane_funcs, + win_data->phy->data_formats, + win_data->phy->nformats, + win_data->type); + if (ret) { + DRM_ERROR("failed to initialize plane\n"); + goto err_cleanup_planes; + } + + plane = &vop_win->base; + if (plane->type == DRM_PLANE_TYPE_PRIMARY) + primary = plane; + else if (plane->type == DRM_PLANE_TYPE_CURSOR) + cursor = plane; + } + + ret = drm_crtc_init_with_planes(drm_dev, crtc, primary, cursor, + &vop_crtc_funcs); + if (ret) + return ret; + + drm_crtc_helper_add(crtc, &vop_crtc_helper_funcs); + + /* + * Create drm_planes for overlay windows with possible_crtcs restricted + * to the newly created crtc. + */ + for (i = 0; i < vop_data->win_size; i++) { + struct vop_win *vop_win = &vop->win[i]; + const struct vop_win_data *win_data = vop_win->data; + unsigned long possible_crtcs = 1 << drm_crtc_index(crtc); + + if (win_data->type != DRM_PLANE_TYPE_OVERLAY) + continue; + + ret = drm_universal_plane_init(vop->drm_dev, &vop_win->base, + possible_crtcs, + &vop_plane_funcs, + win_data->phy->data_formats, + win_data->phy->nformats, + win_data->type); + if (ret) { + DRM_ERROR("failed to initialize overlay plane\n"); + goto err_cleanup_crtc; + } + } + + port = of_get_child_by_name(dev->of_node, "port"); + if (!port) { + DRM_ERROR("no port node found in %s\n", + dev->of_node->full_name); + goto err_cleanup_crtc; + } + + crtc->port = port; + vop->pipe = drm_crtc_index(crtc); + rockchip_register_crtc_funcs(drm_dev, &private_crtc_funcs, vop->pipe); + + return 0; + +err_cleanup_crtc: + drm_crtc_cleanup(crtc); +err_cleanup_planes: + list_for_each_entry(plane, &drm_dev->mode_config.plane_list, head) + drm_plane_cleanup(plane); + return ret; +} + +static void vop_destroy_crtc(struct vop *vop) +{ + struct drm_crtc *crtc = &vop->crtc; + + rockchip_unregister_crtc_funcs(vop->drm_dev, vop->pipe); + of_node_put(crtc->port); + drm_crtc_cleanup(crtc); +} + +static int vop_initial(struct vop *vop) +{ + const struct vop_data *vop_data = vop->data; + const struct vop_reg_data *init_table = vop_data->init_table; + struct reset_control *ahb_rst; + int i, ret; + + vop->hclk = devm_clk_get(vop->dev, "hclk_vop"); + if (IS_ERR(vop->hclk)) { + dev_err(vop->dev, "failed to get hclk source\n"); + return PTR_ERR(vop->hclk); + } + vop->aclk = devm_clk_get(vop->dev, "aclk_vop"); + if (IS_ERR(vop->aclk)) { + dev_err(vop->dev, "failed to get aclk source\n"); + return PTR_ERR(vop->aclk); + } + vop->dclk = devm_clk_get(vop->dev, "dclk_vop"); + if (IS_ERR(vop->dclk)) { + dev_err(vop->dev, "failed to get dclk source\n"); + return PTR_ERR(vop->dclk); + } + + ret = clk_prepare(vop->hclk); + if (ret < 0) { + dev_err(vop->dev, "failed to prepare hclk\n"); + return ret; + } + + ret = clk_prepare(vop->dclk); + if (ret < 0) { + dev_err(vop->dev, "failed to prepare dclk\n"); + goto err_unprepare_hclk; + } + + ret = clk_prepare(vop->aclk); + if (ret < 0) { + dev_err(vop->dev, "failed to prepare aclk\n"); + goto err_unprepare_dclk; + } + + /* + * enable hclk, so that we can config vop register. + */ + ret = clk_enable(vop->hclk); + if (ret < 0) { + dev_err(vop->dev, "failed to prepare aclk\n"); + goto err_unprepare_aclk; + } + /* + * do hclk_reset, reset all vop registers. + */ + ahb_rst = devm_reset_control_get(vop->dev, "ahb"); + if (IS_ERR(ahb_rst)) { + dev_err(vop->dev, "failed to get ahb reset\n"); + ret = PTR_ERR(ahb_rst); + goto err_disable_hclk; + } + reset_control_assert(ahb_rst); + usleep_range(10, 20); + reset_control_deassert(ahb_rst); + + memcpy(vop->regsbak, vop->regs, vop->len); + + for (i = 0; i < vop_data->table_size; i++) + vop_writel(vop, init_table[i].offset, init_table[i].value); + + for (i = 0; i < vop_data->win_size; i++) { + const struct vop_win_data *win = &vop_data->win[i]; + + VOP_WIN_SET(vop, win, enable, 0); + } + + vop_cfg_done(vop); + + /* + * do dclk_reset, let all config take affect. + */ + vop->dclk_rst = devm_reset_control_get(vop->dev, "dclk"); + if (IS_ERR(vop->dclk_rst)) { + dev_err(vop->dev, "failed to get dclk reset\n"); + ret = PTR_ERR(vop->dclk_rst); + goto err_unprepare_aclk; + } + reset_control_assert(vop->dclk_rst); + usleep_range(10, 20); + reset_control_deassert(vop->dclk_rst); + + clk_disable(vop->hclk); + + vop->dpms = DRM_MODE_DPMS_OFF; + + return 0; + +err_disable_hclk: + clk_disable(vop->hclk); +err_unprepare_aclk: + clk_unprepare(vop->aclk); +err_unprepare_dclk: + clk_unprepare(vop->dclk); +err_unprepare_hclk: + clk_unprepare(vop->hclk); + return ret; +} + +/* + * Initialize the vop->win array elements. + */ +static void vop_win_init(struct vop *vop) +{ + const struct vop_data *vop_data = vop->data; + unsigned int i; + + for (i = 0; i < vop_data->win_size; i++) { + struct vop_win *vop_win = &vop->win[i]; + const struct vop_win_data *win_data = &vop_data->win[i]; + + vop_win->data = win_data; + vop_win->vop = vop; + INIT_LIST_HEAD(&vop_win->pending); + } +} + +static int vop_bind(struct device *dev, struct device *master, void *data) +{ + struct platform_device *pdev = to_platform_device(dev); + const struct of_device_id *of_id; + const struct vop_data *vop_data; + struct drm_device *drm_dev = data; + struct vop *vop; + struct resource *res; + size_t alloc_size; + int ret; + + of_id = of_match_device(vop_driver_dt_match, dev); + vop_data = of_id->data; + if (!vop_data) + return -ENODEV; + + /* Allocate vop struct and its vop_win array */ + alloc_size = sizeof(*vop) + sizeof(*vop->win) * vop_data->win_size; + vop = devm_kzalloc(dev, alloc_size, GFP_KERNEL); + if (!vop) + return -ENOMEM; + + vop->dev = dev; + vop->data = vop_data; + vop->drm_dev = drm_dev; + dev_set_drvdata(dev, vop); + + vop_win_init(vop); + + res = platform_get_resource(pdev, IORESOURCE_MEM, 0); + vop->len = resource_size(res); + vop->regs = devm_ioremap_resource(dev, res); + if (IS_ERR(vop->regs)) + return PTR_ERR(vop->regs); + + vop->regsbak = devm_kzalloc(dev, vop->len, GFP_KERNEL); + if (!vop->regsbak) + return -ENOMEM; + + ret = vop_initial(vop); + if (ret < 0) { + dev_err(&pdev->dev, "cannot initial vop dev - err %d\n", ret); + return ret; + } + + vop->irq = platform_get_irq(pdev, 0); + if (vop->irq < 0) { + dev_err(dev, "cannot find irq for vop\n"); + return vop->irq; + } + + spin_lock_init(&vop->reg_lock); + spin_lock_init(&vop->irq_lock); + + mutex_init(&vop->vsync_mutex); + + ret = devm_request_threaded_irq(dev, vop->irq, vop_isr, vop_isr_thread, + IRQF_SHARED, dev_name(dev), vop); + if (ret) + return ret; + + /* IRQ is initially disabled; it gets enabled in power_on */ + disable_irq(vop->irq); + + ret = vop_create_crtc(vop); + if (ret) + return ret; + + pm_runtime_enable(&pdev->dev); + return 0; +} + +static void vop_unbind(struct device *dev, struct device *master, void *data) +{ + struct vop *vop = dev_get_drvdata(dev); + + pm_runtime_disable(dev); + vop_destroy_crtc(vop); +} + +static const struct component_ops vop_component_ops = { + .bind = vop_bind, + .unbind = vop_unbind, +}; + +static int vop_probe(struct platform_device *pdev) +{ + struct device *dev = &pdev->dev; + + if (!dev->of_node) { + dev_err(dev, "can't find vop devices\n"); + return -ENODEV; + } + + return component_add(dev, &vop_component_ops); +} + +static int vop_remove(struct platform_device *pdev) +{ + component_del(&pdev->dev, &vop_component_ops); + + return 0; +} + +struct platform_driver vop_platform_driver = { + .probe = vop_probe, + .remove = vop_remove, + .driver = { + .name = "rockchip-vop", + .owner = THIS_MODULE, + .of_match_table = of_match_ptr(vop_driver_dt_match), + }, +}; + +module_platform_driver(vop_platform_driver); + +MODULE_AUTHOR("Mark Yao "); +MODULE_DESCRIPTION("ROCKCHIP VOP Driver"); +MODULE_LICENSE("GPL v2"); diff --git a/drivers/gpu/drm/rockchip/rockchip_drm_vop.h b/drivers/gpu/drm/rockchip/rockchip_drm_vop.h new file mode 100644 index 0000000000000..63e9b3a084c5b --- /dev/null +++ b/drivers/gpu/drm/rockchip/rockchip_drm_vop.h @@ -0,0 +1,201 @@ +/* + * Copyright (C) Fuzhou Rockchip Electronics Co.Ltd + * Author:Mark Yao + * + * This software is licensed under the terms of the GNU General Public + * License version 2, as published by the Free Software Foundation, and + * may be copied, distributed, and modified under those terms. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + */ + +#ifndef _ROCKCHIP_DRM_VOP_H +#define _ROCKCHIP_DRM_VOP_H + +/* register definition */ +#define REG_CFG_DONE 0x0000 +#define VERSION_INFO 0x0004 +#define SYS_CTRL 0x0008 +#define SYS_CTRL1 0x000c +#define DSP_CTRL0 0x0010 +#define DSP_CTRL1 0x0014 +#define DSP_BG 0x0018 +#define MCU_CTRL 0x001c +#define INTR_CTRL0 0x0020 +#define INTR_CTRL1 0x0024 +#define WIN0_CTRL0 0x0030 +#define WIN0_CTRL1 0x0034 +#define WIN0_COLOR_KEY 0x0038 +#define WIN0_VIR 0x003c +#define WIN0_YRGB_MST 0x0040 +#define WIN0_CBR_MST 0x0044 +#define WIN0_ACT_INFO 0x0048 +#define WIN0_DSP_INFO 0x004c +#define WIN0_DSP_ST 0x0050 +#define WIN0_SCL_FACTOR_YRGB 0x0054 +#define WIN0_SCL_FACTOR_CBR 0x0058 +#define WIN0_SCL_OFFSET 0x005c +#define WIN0_SRC_ALPHA_CTRL 0x0060 +#define WIN0_DST_ALPHA_CTRL 0x0064 +#define WIN0_FADING_CTRL 0x0068 +/* win1 register */ +#define WIN1_CTRL0 0x0070 +#define WIN1_CTRL1 0x0074 +#define WIN1_COLOR_KEY 0x0078 +#define WIN1_VIR 0x007c +#define WIN1_YRGB_MST 0x0080 +#define WIN1_CBR_MST 0x0084 +#define WIN1_ACT_INFO 0x0088 +#define WIN1_DSP_INFO 0x008c +#define WIN1_DSP_ST 0x0090 +#define WIN1_SCL_FACTOR_YRGB 0x0094 +#define WIN1_SCL_FACTOR_CBR 0x0098 +#define WIN1_SCL_OFFSET 0x009c +#define WIN1_SRC_ALPHA_CTRL 0x00a0 +#define WIN1_DST_ALPHA_CTRL 0x00a4 +#define WIN1_FADING_CTRL 0x00a8 +/* win2 register */ +#define WIN2_CTRL0 0x00b0 +#define WIN2_CTRL1 0x00b4 +#define WIN2_VIR0_1 0x00b8 +#define WIN2_VIR2_3 0x00bc +#define WIN2_MST0 0x00c0 +#define WIN2_DSP_INFO0 0x00c4 +#define WIN2_DSP_ST0 0x00c8 +#define WIN2_COLOR_KEY 0x00cc +#define WIN2_MST1 0x00d0 +#define WIN2_DSP_INFO1 0x00d4 +#define WIN2_DSP_ST1 0x00d8 +#define WIN2_SRC_ALPHA_CTRL 0x00dc +#define WIN2_MST2 0x00e0 +#define WIN2_DSP_INFO2 0x00e4 +#define WIN2_DSP_ST2 0x00e8 +#define WIN2_DST_ALPHA_CTRL 0x00ec +#define WIN2_MST3 0x00f0 +#define WIN2_DSP_INFO3 0x00f4 +#define WIN2_DSP_ST3 0x00f8 +#define WIN2_FADING_CTRL 0x00fc +/* win3 register */ +#define WIN3_CTRL0 0x0100 +#define WIN3_CTRL1 0x0104 +#define WIN3_VIR0_1 0x0108 +#define WIN3_VIR2_3 0x010c +#define WIN3_MST0 0x0110 +#define WIN3_DSP_INFO0 0x0114 +#define WIN3_DSP_ST0 0x0118 +#define WIN3_COLOR_KEY 0x011c +#define WIN3_MST1 0x0120 +#define WIN3_DSP_INFO1 0x0124 +#define WIN3_DSP_ST1 0x0128 +#define WIN3_SRC_ALPHA_CTRL 0x012c +#define WIN3_MST2 0x0130 +#define WIN3_DSP_INFO2 0x0134 +#define WIN3_DSP_ST2 0x0138 +#define WIN3_DST_ALPHA_CTRL 0x013c +#define WIN3_MST3 0x0140 +#define WIN3_DSP_INFO3 0x0144 +#define WIN3_DSP_ST3 0x0148 +#define WIN3_FADING_CTRL 0x014c +/* hwc register */ +#define HWC_CTRL0 0x0150 +#define HWC_CTRL1 0x0154 +#define HWC_MST 0x0158 +#define HWC_DSP_ST 0x015c +#define HWC_SRC_ALPHA_CTRL 0x0160 +#define HWC_DST_ALPHA_CTRL 0x0164 +#define HWC_FADING_CTRL 0x0168 +/* post process register */ +#define POST_DSP_HACT_INFO 0x0170 +#define POST_DSP_VACT_INFO 0x0174 +#define POST_SCL_FACTOR_YRGB 0x0178 +#define POST_SCL_CTRL 0x0180 +#define POST_DSP_VACT_INFO_F1 0x0184 +#define DSP_HTOTAL_HS_END 0x0188 +#define DSP_HACT_ST_END 0x018c +#define DSP_VTOTAL_VS_END 0x0190 +#define DSP_VACT_ST_END 0x0194 +#define DSP_VS_ST_END_F1 0x0198 +#define DSP_VACT_ST_END_F1 0x019c +/* register definition end */ + +/* interrupt define */ +#define DSP_HOLD_VALID_INTR (1 << 0) +#define FS_INTR (1 << 1) +#define LINE_FLAG_INTR (1 << 2) +#define BUS_ERROR_INTR (1 << 3) + +#define INTR_MASK (DSP_HOLD_VALID_INTR | FS_INTR | \ + LINE_FLAG_INTR | BUS_ERROR_INTR) + +#define DSP_HOLD_VALID_INTR_EN(x) ((x) << 4) +#define FS_INTR_EN(x) ((x) << 5) +#define LINE_FLAG_INTR_EN(x) ((x) << 6) +#define BUS_ERROR_INTR_EN(x) ((x) << 7) +#define DSP_HOLD_VALID_INTR_MASK (1 << 4) +#define FS_INTR_MASK (1 << 5) +#define LINE_FLAG_INTR_MASK (1 << 6) +#define BUS_ERROR_INTR_MASK (1 << 7) + +#define INTR_CLR_SHIFT 8 +#define DSP_HOLD_VALID_INTR_CLR (1 << (INTR_CLR_SHIFT + 0)) +#define FS_INTR_CLR (1 << (INTR_CLR_SHIFT + 1)) +#define LINE_FLAG_INTR_CLR (1 << (INTR_CLR_SHIFT + 2)) +#define BUS_ERROR_INTR_CLR (1 << (INTR_CLR_SHIFT + 3)) + +#define DSP_LINE_NUM(x) (((x) & 0x1fff) << 12) +#define DSP_LINE_NUM_MASK (0x1fff << 12) + +/* src alpha ctrl define */ +#define SRC_FADING_VALUE(x) (((x) & 0xff) << 24) +#define SRC_GLOBAL_ALPHA(x) (((x) & 0xff) << 16) +#define SRC_FACTOR_M0(x) (((x) & 0x7) << 6) +#define SRC_ALPHA_CAL_M0(x) (((x) & 0x1) << 5) +#define SRC_BLEND_M0(x) (((x) & 0x3) << 3) +#define SRC_ALPHA_M0(x) (((x) & 0x1) << 2) +#define SRC_COLOR_M0(x) (((x) & 0x1) << 1) +#define SRC_ALPHA_EN(x) (((x) & 0x1) << 0) +/* dst alpha ctrl define */ +#define DST_FACTOR_M0(x) (((x) & 0x7) << 6) + +/* + * display output interface supported by rockchip lcdc + */ +#define ROCKCHIP_OUT_MODE_P888 0 +#define ROCKCHIP_OUT_MODE_P666 1 +#define ROCKCHIP_OUT_MODE_P565 2 +/* for use special outface */ +#define ROCKCHIP_OUT_MODE_AAAA 15 + +enum alpha_mode { + ALPHA_STRAIGHT, + ALPHA_INVERSE, +}; + +enum global_blend_mode { + ALPHA_GLOBAL, + ALPHA_PER_PIX, + ALPHA_PER_PIX_GLOBAL, +}; + +enum alpha_cal_mode { + ALPHA_SATURATION, + ALPHA_NO_SATURATION, +}; + +enum color_mode { + ALPHA_SRC_PRE_MUL, + ALPHA_SRC_NO_PRE_MUL, +}; + +enum factor_mode { + ALPHA_ZERO, + ALPHA_ONE, + ALPHA_SRC, + ALPHA_SRC_INVERSE, + ALPHA_SRC_GLOBAL, +}; + +#endif /* _ROCKCHIP_DRM_VOP_H */ From 344ebae602e60e34b406fc47020a573a5060bafe Mon Sep 17 00:00:00 2001 From: Mark Yao Date: Fri, 5 Sep 2014 14:50:43 +0800 Subject: [PATCH 4/5] dt-bindings: video: Add for rockchip display subsytem This add a display subsystem comprise the all display interface nodes. Signed-off-by: Mark Yao --- .../bindings/video/rockchip-drm.txt | 19 +++++++++++++++++++ 1 file changed, 19 insertions(+) create mode 100644 Documentation/devicetree/bindings/video/rockchip-drm.txt diff --git a/Documentation/devicetree/bindings/video/rockchip-drm.txt b/Documentation/devicetree/bindings/video/rockchip-drm.txt new file mode 100644 index 0000000000000..7fff582495a22 --- /dev/null +++ b/Documentation/devicetree/bindings/video/rockchip-drm.txt @@ -0,0 +1,19 @@ +Rockchip DRM master device +================================ + +The Rockchip DRM master device is a virtual device needed to list all +vop devices or other display interface nodes that comprise the +graphics subsystem. + +Required properties: +- compatible: Should be "rockchip,display-subsystem" +- ports: Should contain a list of phandles pointing to display interface port + of vop devices. vop definitions as defined in + Documentation/devicetree/bindings/video/rockchip-vop.txt + +example: + +display-subsystem { + compatible = "rockchip,display-subsystem"; + ports = <&vopl_out>, <&vopb_out>; +}; From 5ac4837b12f533de5d9f8f66b45494c58e805536 Mon Sep 17 00:00:00 2001 From: Mark Yao Date: Fri, 29 Aug 2014 12:38:41 +0800 Subject: [PATCH 5/5] dt-bindings: video: Add documentation for rockchip vop This adds binding documentation for Rockchip SoC VOP driver. Signed-off-by: Mark Yao --- .../bindings/video/rockchip-vop.txt | 58 +++++++++++++++++++ 1 file changed, 58 insertions(+) create mode 100644 Documentation/devicetree/bindings/video/rockchip-vop.txt diff --git a/Documentation/devicetree/bindings/video/rockchip-vop.txt b/Documentation/devicetree/bindings/video/rockchip-vop.txt new file mode 100644 index 0000000000000..d15351f2313d6 --- /dev/null +++ b/Documentation/devicetree/bindings/video/rockchip-vop.txt @@ -0,0 +1,58 @@ +device-tree bindings for rockchip soc display controller (vop) + +VOP (Visual Output Processor) is the Display Controller for the Rockchip +series of SoCs which transfers the image data from a video memory +buffer to an external LCD interface. + +Required properties: +- compatible: value should be one of the following + "rockchip,rk3288-vop"; + +- interrupts: should contain a list of all VOP IP block interrupts in the + order: VSYNC, LCD_SYSTEM. The interrupt specifier + format depends on the interrupt controller used. + +- clocks: must include clock specifiers corresponding to entries in the + clock-names property. + +- clock-names: Must contain + aclk_vop: for ddr buffer transfer. + hclk_vop: for ahb bus to R/W the phy regs. + dclk_vop: pixel clock. + +- resets: Must contain an entry for each entry in reset-names. + See ../reset/reset.txt for details. +- reset-names: Must include the following entries: + - axi + - ahb + - dclk + +- iommus: required a iommu node + +- port: A port node with endpoint definitions as defined in + Documentation/devicetree/bindings/media/video-interfaces.txt. + +Example: +SoC specific DT entry: + vopb: vopb@ff930000 { + compatible = "rockchip,rk3288-vop"; + reg = <0xff930000 0x19c>; + interrupts = ; + clocks = <&cru ACLK_VOP0>, <&cru DCLK_VOP0>, <&cru HCLK_VOP0>; + clock-names = "aclk_vop", "dclk_vop", "hclk_vop"; + resets = <&cru SRST_LCDC1_AXI>, <&cru SRST_LCDC1_AHB>, <&cru SRST_LCDC1_DCLK>; + reset-names = "axi", "ahb", "dclk"; + iommus = <&vopb_mmu>; + vopb_out: port { + #address-cells = <1>; + #size-cells = <0>; + vopb_out_edp: endpoint@0 { + reg = <0>; + remote-endpoint=<&edp_in_vopb>; + }; + vopb_out_hdmi: endpoint@1 { + reg = <1>; + remote-endpoint=<&hdmi_in_vopb>; + }; + }; + };