Skip to content

Commit

Permalink
Merge branch 'for-3.15' of git://git.kernel.org/pub/scm/linux/kernel/…
Browse files Browse the repository at this point in the history 
…git/tj/libata

Pull libata updates from Tejun Heo:
 "A lot of activities on libata side this time.

   - A lot of changes around ahci.  Various embedded platforms are
     implementing ahci controllers.  Some were built atop ahci_platform,
     others were doing their own things.  Hans made some structural
     changes to libahci and librarized ahci_platform so that ahci
     platform drivers can share more common code.  A couple platform
     drivers are added on top of that and several are added to replace
     older drivers which were doing their own things (older ones are
     scheduled to be removed).

   - Dan finishes the patchset to make libata PM operations
     asynchronous.  Combined with one patch being routed through scsi,
     this should speed resume measurably.

   - Various fixes and cleanups from Bartlomiej and others"

* 'for-3.15' of git://git.kernel.org/pub/scm/linux/kernel/git/tj/libata: (61 commits)
  ata: fix Marvell SATA driver dependencies
  ata: fix ARASAN CompactFlash PATA driver dependencies
  ata: remove superfluous casts
  ata: sata_highbank: remove superfluous cast
  ata: fix Calxeda Highbank SATA driver dependencies
  ata: fix R-Car SATA driver dependencies
  ARM: davinci: da850: update SATA AHCI support
  ata: add new-style AHCI platform driver for DaVinci DA850 AHCI controller
  ata: move library code from ahci_platform.c to libahci_platform.c
  ata: ahci_platform: fix ahci_platform_data->suspend method handling
  libata: remove unused ata_sas_port_async_resume() stub
  libata.h: add stub for ata_sas_port_resume
  libata: async resume
  libata, libsas: kill pm_result and related cleanup
  ata: Fix compiler warning with APM X-Gene host controller driver
  arm64: Add APM X-Gene SoC AHCI SATA host controller DTS entries
  ata: Add APM X-Gene SoC AHCI SATA host controller driver
  Documentation: Add documentation for the APM X-Gene SoC SATA host controller DTS binding
  arm64: Add APM X-Gene SoC 15Gbps Multi-purpose PHY DTS entries
  ata: ahci_sunxi: fix code formatting
  ...
  • Loading branch information
Linus Torvalds committed Mar 31, 2014
2 parents 9d919e8 + 03803ef commit 01d5f3b
Show file tree
Hide file tree
Showing 92 changed files with 2,249 additions and 836 deletions.
22 changes: 19 additions & 3 deletions Documentation/devicetree/bindings/ata/ahci-platform.txt
View file
Original file line number Diff line number Diff line change
Expand Up @@ -4,17 +4,33 @@ SATA nodes are defined to describe on-chip Serial ATA controllers.
Each SATA controller should have its own node.

Required properties:
- compatible : compatible list, contains "snps,spear-ahci"
- compatible : compatible list, one of "snps,spear-ahci",
"snps,exynos5440-ahci", "ibm,476gtr-ahci",
"allwinner,sun4i-a10-ahci", "fsl,imx53-ahci"
"fsl,imx6q-ahci" or "snps,dwc-ahci"
- interrupts : <interrupt mapping for SATA IRQ>
- reg : <registers mapping>

Optional properties:
- dma-coherent : Present if dma operations are coherent
- clocks : a list of phandle + clock specifier pairs
- target-supply : regulator for SATA target power

Example:
"fsl,imx53-ahci", "fsl,imx6q-ahci" required properties:
- clocks : must contain the sata, sata_ref and ahb clocks
- clock-names : must contain "ahb" for the ahb clock

Examples:
sata@ffe08000 {
compatible = "snps,spear-ahci";
reg = <0xffe08000 0x1000>;
interrupts = <115>;

};

ahci: sata@01c18000 {
compatible = "allwinner,sun4i-a10-ahci";
reg = <0x01c18000 0x1000>;
interrupts = <56>;
clocks = <&pll6 0>, <&ahb_gates 25>;
target-supply = <&reg_ahci_5v>;
};
76 changes: 76 additions & 0 deletions Documentation/devicetree/bindings/ata/apm-xgene.txt
View file
Original file line number Diff line number Diff line change
@@ -0,0 +1,76 @@
* APM X-Gene 6.0 Gb/s SATA host controller nodes

SATA host controller nodes are defined to describe on-chip Serial ATA
controllers. Each SATA controller (pair of ports) have its own node.

Required properties:
- compatible : Shall contain:
* "apm,xgene-ahci"
- reg : First memory resource shall be the AHCI memory
resource.
Second memory resource shall be the host controller
core memory resource.
Third memory resource shall be the host controller
diagnostic memory resource.
4th memory resource shall be the host controller
AXI memory resource.
5th optional memory resource shall be the host
controller MUX memory resource if required.
- interrupts : Interrupt-specifier for SATA host controller IRQ.
- clocks : Reference to the clock entry.
- phys : A list of phandles + phy-specifiers, one for each
entry in phy-names.
- phy-names : Should contain:
* "sata-phy" for the SATA 6.0Gbps PHY

Optional properties:
- status : Shall be "ok" if enabled or "disabled" if disabled.
Default is "ok".

Example:
sataclk: sataclk {
compatible = "fixed-clock";
#clock-cells = <1>;
clock-frequency = <100000000>;
clock-output-names = "sataclk";
};

phy2: phy@1f22a000 {
compatible = "apm,xgene-phy";
reg = <0x0 0x1f22a000 0x0 0x100>;
#phy-cells = <1>;
};

phy3: phy@1f23a000 {
compatible = "apm,xgene-phy";
reg = <0x0 0x1f23a000 0x0 0x100>;
#phy-cells = <1>;
};

sata2: sata@1a400000 {
compatible = "apm,xgene-ahci";
reg = <0x0 0x1a400000 0x0 0x1000>,
<0x0 0x1f220000 0x0 0x1000>,
<0x0 0x1f22d000 0x0 0x1000>,
<0x0 0x1f22e000 0x0 0x1000>,
<0x0 0x1f227000 0x0 0x1000>;
interrupts = <0x0 0x87 0x4>;
status = "ok";
clocks = <&sataclk 0>;
phys = <&phy2 0>;
phy-names = "sata-phy";
};

sata3: sata@1a800000 {
compatible = "apm,xgene-ahci-pcie";
reg = <0x0 0x1a800000 0x0 0x1000>,
<0x0 0x1f230000 0x0 0x1000>,
<0x0 0x1f23d000 0x0 0x1000>,
<0x0 0x1f23e000 0x0 0x1000>,
<0x0 0x1f237000 0x0 0x1000>;
interrupts = <0x0 0x88 0x4>;
status = "ok";
clocks = <&sataclk 0>;
phys = <&phy3 0>;
phy-names = "sata-phy";
};
2 changes: 1 addition & 1 deletion arch/arm/mach-davinci/da850.c
View file
Original file line number Diff line number Diff line change
Expand Up @@ -472,7 +472,7 @@ static struct clk_lookup da850_clks[] = {
CLK("spi_davinci.0", NULL, &spi0_clk),
CLK("spi_davinci.1", NULL, &spi1_clk),
CLK("vpif", NULL, &vpif_clk),
CLK("ahci", NULL, &sata_clk),
CLK("ahci_da850", NULL, &sata_clk),
CLK("davinci-rproc.0", NULL, &dsp_clk),
CLK("ehrpwm", "fck", &ehrpwm_clk),
CLK("ehrpwm", "tbclk", &ehrpwm_tbclk),
Expand Down
99 changes: 8 additions & 91 deletions arch/arm/mach-davinci/devices-da8xx.c
View file
Original file line number Diff line number Diff line change
Expand Up @@ -1020,111 +1020,29 @@ int __init da8xx_register_spi_bus(int instance, unsigned num_chipselect)
}

#ifdef CONFIG_ARCH_DAVINCI_DA850

static struct resource da850_sata_resources[] = {
{
.start = DA850_SATA_BASE,
.end = DA850_SATA_BASE + 0x1fff,
.flags = IORESOURCE_MEM,
},
{
.start = DA8XX_SYSCFG1_BASE + DA8XX_PWRDN_REG,
.end = DA8XX_SYSCFG1_BASE + DA8XX_PWRDN_REG + 0x3,
.flags = IORESOURCE_MEM,
},
{
.start = IRQ_DA850_SATAINT,
.flags = IORESOURCE_IRQ,
},
};

/* SATA PHY Control Register offset from AHCI base */
#define SATA_P0PHYCR_REG 0x178

#define SATA_PHY_MPY(x) ((x) << 0)
#define SATA_PHY_LOS(x) ((x) << 6)
#define SATA_PHY_RXCDR(x) ((x) << 10)
#define SATA_PHY_RXEQ(x) ((x) << 13)
#define SATA_PHY_TXSWING(x) ((x) << 19)
#define SATA_PHY_ENPLL(x) ((x) << 31)

static struct clk *da850_sata_clk;
static unsigned long da850_sata_refclkpn;

/* Supported DA850 SATA crystal frequencies */
#define KHZ_TO_HZ(freq) ((freq) * 1000)
static unsigned long da850_sata_xtal[] = {
KHZ_TO_HZ(300000),
KHZ_TO_HZ(250000),
0, /* Reserved */
KHZ_TO_HZ(187500),
KHZ_TO_HZ(150000),
KHZ_TO_HZ(125000),
KHZ_TO_HZ(120000),
KHZ_TO_HZ(100000),
KHZ_TO_HZ(75000),
KHZ_TO_HZ(60000),
};

static int da850_sata_init(struct device *dev, void __iomem *addr)
{
int i, ret;
unsigned int val;

da850_sata_clk = clk_get(dev, NULL);
if (IS_ERR(da850_sata_clk))
return PTR_ERR(da850_sata_clk);

ret = clk_prepare_enable(da850_sata_clk);
if (ret)
goto err0;

/* Enable SATA clock receiver */
val = __raw_readl(DA8XX_SYSCFG1_VIRT(DA8XX_PWRDN_REG));
val &= ~BIT(0);
__raw_writel(val, DA8XX_SYSCFG1_VIRT(DA8XX_PWRDN_REG));

/* Get the multiplier needed for 1.5GHz PLL output */
for (i = 0; i < ARRAY_SIZE(da850_sata_xtal); i++)
if (da850_sata_xtal[i] == da850_sata_refclkpn)
break;

if (i == ARRAY_SIZE(da850_sata_xtal)) {
ret = -EINVAL;
goto err1;
}

val = SATA_PHY_MPY(i + 1) |
SATA_PHY_LOS(1) |
SATA_PHY_RXCDR(4) |
SATA_PHY_RXEQ(1) |
SATA_PHY_TXSWING(3) |
SATA_PHY_ENPLL(1);

__raw_writel(val, addr + SATA_P0PHYCR_REG);

return 0;

err1:
clk_disable_unprepare(da850_sata_clk);
err0:
clk_put(da850_sata_clk);
return ret;
}

static void da850_sata_exit(struct device *dev)
{
clk_disable_unprepare(da850_sata_clk);
clk_put(da850_sata_clk);
}

static struct ahci_platform_data da850_sata_pdata = {
.init = da850_sata_init,
.exit = da850_sata_exit,
};

static u64 da850_sata_dmamask = DMA_BIT_MASK(32);

static struct platform_device da850_sata_device = {
.name = "ahci",
.name = "ahci_da850",
.id = -1,
.dev = {
.platform_data = &da850_sata_pdata,
.dma_mask = &da850_sata_dmamask,
.coherent_dma_mask = DMA_BIT_MASK(32),
},
Expand All @@ -1134,9 +1052,8 @@ static struct platform_device da850_sata_device = {

int __init da850_register_sata(unsigned long refclkpn)
{
da850_sata_refclkpn = refclkpn;
if (!da850_sata_refclkpn)
return -EINVAL;
/* please see comment in drivers/ata/ahci_da850.c */
BUG_ON(refclkpn != 100 * 1000 * 1000);

return platform_device_register(&da850_sata_device);
}
Expand Down
Loading

0 comments on commit 01d5f3b

Please sign in to comment.