---

yaml --- r: 324283 b: refs/heads/master c: f9a6aa4 h: refs/heads/master i: 324281: 9d75c32 324279: 3561ca2 v: v3
git-mirror · Aug 25, 2012 · ad89d18 · ad89d18
1 parent f974a2a
commit ad89d18
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Showing 14 changed files with 138 additions and 128 deletions.
diff --git a/[refs] b/[refs]
@@ -1,2 +1,2 @@
 ---
-refs/heads/master: bc0e489eb07f4aa2fb5cb9b7ff1fdf4b6ba3bda5
+refs/heads/master: f9a6aa4303bd15bbdb24d9fe374e4e6850298460
diff --git a/trunk/arch/arm/Kconfig b/trunk/arch/arm/Kconfig
@@ -273,7 +273,7 @@ config ARCH_INTEGRATOR
 	select ARM_AMBA
 	select ARCH_HAS_CPUFREQ
 	select COMMON_CLK
-	select CLK_VERSATILE
+	select COMMON_CLK_VERSATILE
 	select HAVE_TCM
 	select ICST
 	select GENERIC_CLOCKEVENTS
@@ -289,13 +289,12 @@ config ARCH_INTEGRATOR
 config ARCH_REALVIEW
 	bool "ARM Ltd. RealView family"
 	select ARM_AMBA
-	select CLKDEV_LOOKUP
-	select HAVE_MACH_CLKDEV
+	select COMMON_CLK
+	select COMMON_CLK_VERSATILE
 	select ICST
 	select GENERIC_CLOCKEVENTS
 	select ARCH_WANT_OPTIONAL_GPIOLIB
 	select PLAT_VERSATILE
-	select PLAT_VERSATILE_CLOCK
 	select PLAT_VERSATILE_CLCD
 	select ARM_TIMER_SP804
 	select GPIO_PL061 if GPIOLIB

diff --git a/trunk/arch/arm/mach-realview/core.c b/trunk/arch/arm/mach-realview/core.c
@@ -30,7 +30,6 @@
 #include <linux/ata_platform.h>
 #include <linux/amba/mmci.h>
 #include <linux/gfp.h>
-#include <linux/clkdev.h>
 #include <linux/mtd/physmap.h>
 
 #include <mach/hardware.h>
@@ -226,115 +225,10 @@ struct mmci_platform_data realview_mmc1_plat_data = {
 	.cd_invert	= true,
 };
 
-/*
- * Clock handling
- */
-static const struct icst_params realview_oscvco_params = {
-	.ref		= 24000000,
-	.vco_max	= ICST307_VCO_MAX,
-	.vco_min	= ICST307_VCO_MIN,
-	.vd_min		= 4 + 8,
-	.vd_max		= 511 + 8,
-	.rd_min		= 1 + 2,
-	.rd_max		= 127 + 2,
-	.s2div		= icst307_s2div,
-	.idx2s		= icst307_idx2s,
-};
-
-static void realview_oscvco_set(struct clk *clk, struct icst_vco vco)
-{
-	void __iomem *sys_lock = __io_address(REALVIEW_SYS_BASE) + REALVIEW_SYS_LOCK_OFFSET;
-	u32 val;
-
-	val = readl(clk->vcoreg) & ~0x7ffff;
-	val |= vco.v | (vco.r << 9) | (vco.s << 16);
-
-	writel(0xa05f, sys_lock);
-	writel(val, clk->vcoreg);
-	writel(0, sys_lock);
-}
-
-static const struct clk_ops oscvco_clk_ops = {
-	.round	= icst_clk_round,
-	.set	= icst_clk_set,
-	.setvco	= realview_oscvco_set,
-};
-
-static struct clk oscvco_clk = {
-	.ops	= &oscvco_clk_ops,
-	.params	= &realview_oscvco_params,
-};
-
-/*
- * These are fixed clocks.
- */
-static struct clk ref24_clk = {
-	.rate	= 24000000,
-};
-
-static struct clk sp804_clk = {
-	.rate	= 1000000,
-};
-
-static struct clk dummy_apb_pclk;
-
-static struct clk_lookup lookups[] = {
-	{	/* Bus clock */
-		.con_id		= "apb_pclk",
-		.clk		= &dummy_apb_pclk,
-	}, {	/* UART0 */
-		.dev_id		= "dev:uart0",
-		.clk		= &ref24_clk,
-	}, {	/* UART1 */
-		.dev_id		= "dev:uart1",
-		.clk		= &ref24_clk,
-	}, {	/* UART2 */
-		.dev_id		= "dev:uart2",
-		.clk		= &ref24_clk,
-	}, {	/* UART3 */
-		.dev_id		= "fpga:uart3",
-		.clk		= &ref24_clk,
-	}, {	/* UART3 is on the dev chip in PB1176 */
-		.dev_id		= "dev:uart3",
-		.clk		= &ref24_clk,
-	}, {	/* UART4 only exists in PB1176 */
-		.dev_id		= "fpga:uart4",
-		.clk		= &ref24_clk,
-	}, {	/* KMI0 */
-		.dev_id		= "fpga:kmi0",
-		.clk		= &ref24_clk,
-	}, {	/* KMI1 */
-		.dev_id		= "fpga:kmi1",
-		.clk		= &ref24_clk,
-	}, {	/* MMC0 */
-		.dev_id		= "fpga:mmc0",
-		.clk		= &ref24_clk,
-	}, {	/* CLCD is in the PB1176 and EB DevChip */
-		.dev_id		= "dev:clcd",
-		.clk		= &oscvco_clk,
-	}, {	/* PB:CLCD */
-		.dev_id		= "issp:clcd",
-		.clk		= &oscvco_clk,
-	}, {	/* SSP */
-		.dev_id		= "dev:ssp0",
-		.clk		= &ref24_clk,
-	}, {	/* SP804 timers */
-		.dev_id		= "sp804",
-		.clk		= &sp804_clk,
-	},
-};
-
 void __init realview_init_early(void)
 {
 	void __iomem *sys = __io_address(REALVIEW_SYS_BASE);
 
-	if (machine_is_realview_pb1176())
-		oscvco_clk.vcoreg = sys + REALVIEW_SYS_OSC0_OFFSET;
-	else
-		oscvco_clk.vcoreg = sys + REALVIEW_SYS_OSC4_OFFSET;
-
-	clkdev_add_table(lookups, ARRAY_SIZE(lookups));
-
 	versatile_sched_clock_init(sys + REALVIEW_SYS_24MHz_OFFSET, 24000000);
 }
 

diff --git a/trunk/arch/arm/mach-realview/include/mach/clkdev.h b/trunk/arch/arm/mach-realview/include/mach/clkdev.h
diff --git a/trunk/arch/arm/mach-realview/realview_eb.c b/trunk/arch/arm/mach-realview/realview_eb.c
@@ -27,6 +27,7 @@
 #include <linux/amba/mmci.h>
 #include <linux/amba/pl022.h>
 #include <linux/io.h>
+#include <linux/platform_data/clk-realview.h>
 
 #include <mach/hardware.h>
 #include <asm/irq.h>
@@ -414,6 +415,7 @@ static void __init realview_eb_timer_init(void)
 	else
 		timer_irq = IRQ_EB_TIMER0_1;
 
+	realview_clk_init(__io_address(REALVIEW_SYS_BASE), false);
 	realview_timer_init(timer_irq);
 	realview_eb_twd_init();
 }

diff --git a/trunk/arch/arm/mach-realview/realview_pb1176.c b/trunk/arch/arm/mach-realview/realview_pb1176.c
@@ -29,6 +29,7 @@
 #include <linux/mtd/physmap.h>
 #include <linux/mtd/partitions.h>
 #include <linux/io.h>
+#include <linux/platform_data/clk-realview.h>
 
 #include <mach/hardware.h>
 #include <asm/irq.h>
@@ -326,6 +327,7 @@ static void __init realview_pb1176_timer_init(void)
 	timer2_va_base = __io_address(REALVIEW_PB1176_TIMER2_3_BASE);
 	timer3_va_base = __io_address(REALVIEW_PB1176_TIMER2_3_BASE) + 0x20;
 
+	realview_clk_init(__io_address(REALVIEW_SYS_BASE), true);
 	realview_timer_init(IRQ_DC1176_TIMER0);
 }
 

diff --git a/trunk/arch/arm/mach-realview/realview_pb11mp.c b/trunk/arch/arm/mach-realview/realview_pb11mp.c
@@ -27,6 +27,7 @@
 #include <linux/amba/mmci.h>
 #include <linux/amba/pl022.h>
 #include <linux/io.h>
+#include <linux/platform_data/clk-realview.h>
 
 #include <mach/hardware.h>
 #include <asm/irq.h>
@@ -312,6 +313,7 @@ static void __init realview_pb11mp_timer_init(void)
 	timer2_va_base = __io_address(REALVIEW_PB11MP_TIMER2_3_BASE);
 	timer3_va_base = __io_address(REALVIEW_PB11MP_TIMER2_3_BASE) + 0x20;
 
+	realview_clk_init(__io_address(REALVIEW_SYS_BASE), false);
 	realview_timer_init(IRQ_TC11MP_TIMER0_1);
 	realview_pb11mp_twd_init();
 }

diff --git a/trunk/arch/arm/mach-realview/realview_pba8.c b/trunk/arch/arm/mach-realview/realview_pba8.c
@@ -27,6 +27,7 @@
 #include <linux/amba/mmci.h>
 #include <linux/amba/pl022.h>
 #include <linux/io.h>
+#include <linux/platform_data/clk-realview.h>
 
 #include <asm/irq.h>
 #include <asm/leds.h>
@@ -261,6 +262,7 @@ static void __init realview_pba8_timer_init(void)
 	timer2_va_base = __io_address(REALVIEW_PBA8_TIMER2_3_BASE);
 	timer3_va_base = __io_address(REALVIEW_PBA8_TIMER2_3_BASE) + 0x20;
 
+	realview_clk_init(__io_address(REALVIEW_SYS_BASE), false);
 	realview_timer_init(IRQ_PBA8_TIMER0_1);
 }
 

diff --git a/trunk/arch/arm/mach-realview/realview_pbx.c b/trunk/arch/arm/mach-realview/realview_pbx.c
@@ -26,6 +26,7 @@
 #include <linux/amba/mmci.h>
 #include <linux/amba/pl022.h>
 #include <linux/io.h>
+#include <linux/platform_data/clk-realview.h>
 
 #include <asm/irq.h>
 #include <asm/leds.h>
@@ -320,6 +321,7 @@ static void __init realview_pbx_timer_init(void)
 	timer2_va_base = __io_address(REALVIEW_PBX_TIMER2_3_BASE);
 	timer3_va_base = __io_address(REALVIEW_PBX_TIMER2_3_BASE) + 0x20;
 
+	realview_clk_init(__io_address(REALVIEW_SYS_BASE), false);
 	realview_timer_init(IRQ_PBX_TIMER0_1);
 	realview_pbx_twd_init();
 }

diff --git a/trunk/drivers/clk/Kconfig b/trunk/drivers/clk/Kconfig
@@ -40,4 +40,11 @@ config COMMON_CLK_WM831X
           Supports the clocking subsystem of the WM831x/2x series of
 	  PMICs from Wolfson Microlectronics.
 
+config COMMON_CLK_VERSATILE
+	tristate "Clock driver for ARM Reference designs"
+	depends on ARCH_INTEGRATOR || ARCH_REALVIEW
+	---help---
+          Supports clocking on ARM Reference designs Integrator/AP,
+	  Integrator/CP, RealView PB1176, EB, PB11MP and PBX.
+
 endmenu
diff --git a/trunk/drivers/clk/Makefile b/trunk/drivers/clk/Makefile
@@ -9,7 +9,7 @@ obj-$(CONFIG_ARCH_MXS)		+= mxs/
 obj-$(CONFIG_ARCH_SOCFPGA)	+= socfpga/
 obj-$(CONFIG_PLAT_SPEAR)	+= spear/
 obj-$(CONFIG_ARCH_U300)		+= clk-u300.o
-obj-$(CONFIG_ARCH_INTEGRATOR)	+= versatile/
+obj-$(CONFIG_COMMON_CLK_VERSATILE) += versatile/
 obj-$(CONFIG_ARCH_PRIMA2)	+= clk-prima2.o
 
 # Chip specific

diff --git a/trunk/drivers/clk/versatile/Makefile b/trunk/drivers/clk/versatile/Makefile
@@ -1,3 +1,4 @@
 # Makefile for Versatile-specific clocks
 obj-$(CONFIG_ICST)		+= clk-icst.o
 obj-$(CONFIG_ARCH_INTEGRATOR)	+= clk-integrator.o
+obj-$(CONFIG_ARCH_REALVIEW)	+= clk-realview.o
diff --git a/trunk/drivers/clk/versatile/clk-realview.c b/trunk/drivers/clk/versatile/clk-realview.c
@@ -0,0 +1,114 @@
+#include <linux/clk.h>
+#include <linux/clkdev.h>
+#include <linux/err.h>
+#include <linux/io.h>
+#include <linux/clk-provider.h>
+
+#include <mach/hardware.h>
+#include <mach/platform.h>
+
+#include "clk-icst.h"
+
+/*
+ * Implementation of the ARM RealView clock trees.
+ */
+
+static void __iomem *sys_lock;
+static void __iomem *sys_vcoreg;
+
+/**
+ * realview_oscvco_get() - get ICST OSC settings for the RealView
+ */
+static struct icst_vco realview_oscvco_get(void)
+{
+	u32 val;
+	struct icst_vco vco;
+
+	val = readl(sys_vcoreg);
+	vco.v = val & 0x1ff;
+	vco.r = (val >> 9) & 0x7f;
+	vco.s = (val >> 16) & 03;
+	return vco;
+}
+
+static void realview_oscvco_set(struct icst_vco vco)
+{
+	u32 val;
+
+	val = readl(sys_vcoreg) & ~0x7ffff;
+	val |= vco.v | (vco.r << 9) | (vco.s << 16);
+
+	/* This magic unlocks the CM VCO so it can be controlled */
+	writel(0xa05f, sys_lock);
+	writel(val, sys_vcoreg);
+	/* This locks the CM again */
+	writel(0, sys_lock);
+}
+
+static const struct icst_params realview_oscvco_params = {
+	.ref		= 24000000,
+	.vco_max	= ICST307_VCO_MAX,
+	.vco_min	= ICST307_VCO_MIN,
+	.vd_min		= 4 + 8,
+	.vd_max		= 511 + 8,
+	.rd_min		= 1 + 2,
+	.rd_max		= 127 + 2,
+	.s2div		= icst307_s2div,
+	.idx2s		= icst307_idx2s,
+};
+
+static const struct clk_icst_desc __initdata realview_icst_desc = {
+	.params = &realview_oscvco_params,
+	.getvco = realview_oscvco_get,
+	.setvco = realview_oscvco_set,
+};
+
+/*
+ * realview_clk_init() - set up the RealView clock tree
+ */
+void __init realview_clk_init(void __iomem *sysbase, bool is_pb1176)
+{
+	struct clk *clk;
+
+	sys_lock = sysbase + REALVIEW_SYS_LOCK_OFFSET;
+	if (is_pb1176)
+		sys_vcoreg = sysbase + REALVIEW_SYS_OSC0_OFFSET;
+	else
+		sys_vcoreg = sysbase + REALVIEW_SYS_OSC4_OFFSET;
+
+
+	/* APB clock dummy */
+	clk = clk_register_fixed_rate(NULL, "apb_pclk", NULL, CLK_IS_ROOT, 0);
+	clk_register_clkdev(clk, "apb_pclk", NULL);
+
+	/* 24 MHz clock */
+	clk = clk_register_fixed_rate(NULL, "clk24mhz", NULL, CLK_IS_ROOT,
+				24000000);
+	clk_register_clkdev(clk, NULL, "dev:uart0");
+	clk_register_clkdev(clk, NULL, "dev:uart1");
+	clk_register_clkdev(clk, NULL, "dev:uart2");
+	clk_register_clkdev(clk, NULL, "fpga:kmi0");
+	clk_register_clkdev(clk, NULL, "fpga:kmi1");
+	clk_register_clkdev(clk, NULL, "fpga:mmc0");
+	clk_register_clkdev(clk, NULL, "dev:ssp0");
+	if (is_pb1176) {
+		/*
+		 * UART3 is on the dev chip in PB1176
+		 * UART4 only exists in PB1176
+		 */
+		clk_register_clkdev(clk, NULL, "dev:uart3");
+		clk_register_clkdev(clk, NULL, "dev:uart4");
+	} else
+		clk_register_clkdev(clk, NULL, "fpga:uart3");
+
+
+	/* 1 MHz clock */
+	clk = clk_register_fixed_rate(NULL, "clk1mhz", NULL, CLK_IS_ROOT,
+				      1000000);
+	clk_register_clkdev(clk, NULL, "sp804");
+
+	/* ICST VCO clock */
+	clk = icst_clk_register(NULL, &realview_icst_desc);
+	clk_register_clkdev(clk, NULL, "dev:clcd");
+	clk_register_clkdev(clk, NULL, "issp:clcd");
+}
diff --git a/trunk/include/linux/platform_data/clk-realview.h b/trunk/include/linux/platform_data/clk-realview.h
@@ -0,0 +1 @@
+void realview_clk_init(void __iomem *sysbase, bool is_pb1176);
Original file line number	Diff line number	Diff line change
		@@ -0,0 +1 @@
		void realview_clk_init(void __iomem *sysbase, bool is_pb1176);