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authorLinus Torvalds <torvalds@linux-foundation.org>2011-07-26 17:41:04 -0700
committerLinus Torvalds <torvalds@linux-foundation.org>2011-07-26 17:41:04 -0700
commit69f1d1a6acbaa7d83ef3f4ee26209c58cd000204 (patch)
tree12be981f8a123b8361edd64b84fd72f339a9655d /arch/arm/mach-davinci
parent2d86a3f04e345b03d5e429bfe14985ce26bff4dc (diff)
parent1e09939bad24df95ddeeeca4fbec64fa94b66def (diff)
Merge branch 'next/devel' of ssh://master.kernel.org/pub/scm/linux/kernel/git/arm/linux-arm-soc
* 'next/devel' of ssh://master.kernel.org/pub/scm/linux/kernel/git/arm/linux-arm-soc: (128 commits) ARM: S5P64X0: External Interrupt Support ARM: EXYNOS4: Enable MFC on Samsung NURI ARM: EXYNOS4: Enable MFC on universal_c210 ARM: S5PV210: Enable MFC on Goni ARM: S5P: Add support for MFC device ARM: EXYNOS4: Add support FIMD on SMDKC210 ARM: EXYNOS4: Add platform device and helper functions for FIMD ARM: EXYNOS4: Add resource definition for FIMD ARM: EXYNOS4: Change devname for FIMD clkdev ARM: SAMSUNG: Add IRQ_I2S0 definition ARM: SAMSUNG: Add platform device for idma ARM: EXYNOS4: Add more registers to be saved and restored for PM ARM: EXYNOS4: Add more register addresses of CMU ARM: EXYNOS4: Add platform device for dwmci driver ARM: EXYNOS4: configure rtc-s3c on NURI ARM: EXYNOS4: configure MAX8903 secondary charger on NURI ARM: EXYNOS4: configure ADC on NURI ARM: EXYNOS4: configure MAX17042 fuel gauge on NURI ARM: EXYNOS4: configure regulators and PMIC(MAX8997) on NURI ARM: EXYNOS4: Increase NR_IRQS for devices with more IRQs ... Fix up tons of silly conflicts: - arch/arm/mach-davinci/include/mach/psc.h - arch/arm/mach-exynos4/Kconfig - arch/arm/mach-exynos4/mach-smdkc210.c - arch/arm/mach-exynos4/pm.c - arch/arm/mach-imx/mm-imx1.c - arch/arm/mach-imx/mm-imx21.c - arch/arm/mach-imx/mm-imx25.c - arch/arm/mach-imx/mm-imx27.c - arch/arm/mach-imx/mm-imx31.c - arch/arm/mach-imx/mm-imx35.c - arch/arm/mach-mx5/mm.c - arch/arm/mach-s5pv210/mach-goni.c - arch/arm/mm/Kconfig
Diffstat (limited to 'arch/arm/mach-davinci')
-rw-r--r--arch/arm/mach-davinci/board-da850-evm.c7
-rw-r--r--arch/arm/mach-davinci/clock.c8
-rw-r--r--arch/arm/mach-davinci/clock.h1
-rw-r--r--arch/arm/mach-davinci/da850.c10
-rw-r--r--arch/arm/mach-davinci/devices-da8xx.c126
-rw-r--r--arch/arm/mach-davinci/include/mach/da8xx.h2
-rw-r--r--arch/arm/mach-davinci/include/mach/psc.h3
-rw-r--r--arch/arm/mach-davinci/psc.c14
8 files changed, 164 insertions, 7 deletions
diff --git a/arch/arm/mach-davinci/board-da850-evm.c b/arch/arm/mach-davinci/board-da850-evm.c
index 29671ef0715..bd5394537c8 100644
--- a/arch/arm/mach-davinci/board-da850-evm.c
+++ b/arch/arm/mach-davinci/board-da850-evm.c
@@ -1117,6 +1117,8 @@ static __init int da850_evm_init_cpufreq(void)
static __init int da850_evm_init_cpufreq(void) { return 0; }
#endif
+#define DA850EVM_SATA_REFCLKPN_RATE (100 * 1000 * 1000)
+
static __init void da850_evm_init(void)
{
int ret;
@@ -1237,6 +1239,11 @@ static __init void da850_evm_init(void)
if (ret)
pr_warning("da850_evm_init: spi 1 registration failed: %d\n",
ret);
+
+ ret = da850_register_sata(DA850EVM_SATA_REFCLKPN_RATE);
+ if (ret)
+ pr_warning("da850_evm_init: sata registration failed: %d\n",
+ ret);
}
#ifdef CONFIG_SERIAL_8250_CONSOLE
diff --git a/arch/arm/mach-davinci/clock.c b/arch/arm/mach-davinci/clock.c
index ae653194b64..00861139101 100644
--- a/arch/arm/mach-davinci/clock.c
+++ b/arch/arm/mach-davinci/clock.c
@@ -44,7 +44,7 @@ static void __clk_enable(struct clk *clk)
__clk_enable(clk->parent);
if (clk->usecount++ == 0 && (clk->flags & CLK_PSC))
davinci_psc_config(psc_domain(clk), clk->gpsc, clk->lpsc,
- PSC_STATE_ENABLE);
+ true, clk->flags);
}
static void __clk_disable(struct clk *clk)
@@ -54,8 +54,7 @@ static void __clk_disable(struct clk *clk)
if (--clk->usecount == 0 && !(clk->flags & CLK_PLL) &&
(clk->flags & CLK_PSC))
davinci_psc_config(psc_domain(clk), clk->gpsc, clk->lpsc,
- (clk->flags & PSC_SWRSTDISABLE) ?
- PSC_STATE_SWRSTDISABLE : PSC_STATE_DISABLE);
+ false, clk->flags);
if (clk->parent)
__clk_disable(clk->parent);
}
@@ -239,8 +238,7 @@ static int __init clk_disable_unused(void)
pr_debug("Clocks: disable unused %s\n", ck->name);
davinci_psc_config(psc_domain(ck), ck->gpsc, ck->lpsc,
- (ck->flags & PSC_SWRSTDISABLE) ?
- PSC_STATE_SWRSTDISABLE : PSC_STATE_DISABLE);
+ false, ck->flags);
}
spin_unlock_irq(&clockfw_lock);
diff --git a/arch/arm/mach-davinci/clock.h b/arch/arm/mach-davinci/clock.h
index 50b2482e0ba..a705f367a84 100644
--- a/arch/arm/mach-davinci/clock.h
+++ b/arch/arm/mach-davinci/clock.h
@@ -111,6 +111,7 @@ struct clk {
#define CLK_PLL BIT(4) /* PLL-derived clock */
#define PRE_PLL BIT(5) /* source is before PLL mult/div */
#define PSC_SWRSTDISABLE BIT(6) /* Disable state is SwRstDisable */
+#define PSC_FORCE BIT(7) /* Force module state transtition */
#define CLK(dev, con, ck) \
{ \
diff --git a/arch/arm/mach-davinci/da850.c b/arch/arm/mach-davinci/da850.c
index 133aac40585..935dbed5c54 100644
--- a/arch/arm/mach-davinci/da850.c
+++ b/arch/arm/mach-davinci/da850.c
@@ -58,6 +58,7 @@ static struct pll_data pll0_data = {
static struct clk ref_clk = {
.name = "ref_clk",
.rate = DA850_REF_FREQ,
+ .set_rate = davinci_simple_set_rate,
};
static struct clk pll0_clk = {
@@ -373,6 +374,14 @@ static struct clk spi1_clk = {
.flags = DA850_CLK_ASYNC3,
};
+static struct clk sata_clk = {
+ .name = "sata",
+ .parent = &pll0_sysclk2,
+ .lpsc = DA850_LPSC1_SATA,
+ .gpsc = 1,
+ .flags = PSC_FORCE,
+};
+
static struct clk_lookup da850_clks[] = {
CLK(NULL, "ref", &ref_clk),
CLK(NULL, "pll0", &pll0_clk),
@@ -419,6 +428,7 @@ static struct clk_lookup da850_clks[] = {
CLK(NULL, "usb20", &usb20_clk),
CLK("spi_davinci.0", NULL, &spi0_clk),
CLK("spi_davinci.1", NULL, &spi1_clk),
+ CLK("ahci", NULL, &sata_clk),
CLK(NULL, NULL, NULL),
};
diff --git a/arch/arm/mach-davinci/devices-da8xx.c b/arch/arm/mach-davinci/devices-da8xx.c
index fc4e98ea754..2f7e719636f 100644
--- a/arch/arm/mach-davinci/devices-da8xx.c
+++ b/arch/arm/mach-davinci/devices-da8xx.c
@@ -14,6 +14,8 @@
#include <linux/platform_device.h>
#include <linux/dma-mapping.h>
#include <linux/serial_8250.h>
+#include <linux/ahci_platform.h>
+#include <linux/clk.h>
#include <mach/cputype.h>
#include <mach/common.h>
@@ -33,6 +35,7 @@
#define DA8XX_SPI0_BASE 0x01c41000
#define DA830_SPI1_BASE 0x01e12000
#define DA8XX_LCD_CNTRL_BASE 0x01e13000
+#define DA850_SATA_BASE 0x01e18000
#define DA850_MMCSD1_BASE 0x01e1b000
#define DA8XX_EMAC_CPPI_PORT_BASE 0x01e20000
#define DA8XX_EMAC_CPGMACSS_BASE 0x01e22000
@@ -842,3 +845,126 @@ int __init da8xx_register_spi(int instance, struct spi_board_info *info,
return platform_device_register(&da8xx_spi_device[instance]);
}
+
+#ifdef CONFIG_ARCH_DAVINCI_DA850
+
+static struct resource da850_sata_resources[] = {
+ {
+ .start = DA850_SATA_BASE,
+ .end = DA850_SATA_BASE + 0x1fff,
+ .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_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(da850_sata_clk);
+err0:
+ clk_put(da850_sata_clk);
+ return ret;
+}
+
+static void da850_sata_exit(struct device *dev)
+{
+ clk_disable(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",
+ .id = -1,
+ .dev = {
+ .platform_data = &da850_sata_pdata,
+ .dma_mask = &da850_sata_dmamask,
+ .coherent_dma_mask = DMA_BIT_MASK(32),
+ },
+ .num_resources = ARRAY_SIZE(da850_sata_resources),
+ .resource = da850_sata_resources,
+};
+
+int __init da850_register_sata(unsigned long refclkpn)
+{
+ da850_sata_refclkpn = refclkpn;
+ if (!da850_sata_refclkpn)
+ return -EINVAL;
+
+ return platform_device_register(&da850_sata_device);
+}
+#endif
diff --git a/arch/arm/mach-davinci/include/mach/da8xx.h b/arch/arm/mach-davinci/include/mach/da8xx.h
index ad64da713fc..eaca7d8b9d6 100644
--- a/arch/arm/mach-davinci/include/mach/da8xx.h
+++ b/arch/arm/mach-davinci/include/mach/da8xx.h
@@ -57,6 +57,7 @@ extern unsigned int da850_max_speed;
#define DA8XX_SYSCFG1_BASE (IO_PHYS + 0x22C000)
#define DA8XX_SYSCFG1_VIRT(x) (da8xx_syscfg1_base + (x))
#define DA8XX_DEEPSLEEP_REG 0x8
+#define DA8XX_PWRDN_REG 0x18
#define DA8XX_PSC0_BASE 0x01c10000
#define DA8XX_PLL0_BASE 0x01c11000
@@ -89,6 +90,7 @@ int da850_register_cpufreq(char *async_clk);
int da8xx_register_cpuidle(void);
void __iomem * __init da8xx_get_mem_ctlr(void);
int da850_register_pm(struct platform_device *pdev);
+int __init da850_register_sata(unsigned long refclkpn);
extern struct platform_device da8xx_serial_device;
extern struct emac_platform_data da8xx_emac_pdata;
diff --git a/arch/arm/mach-davinci/include/mach/psc.h b/arch/arm/mach-davinci/include/mach/psc.h
index 1110fdd77ba..47fd0bc3d3e 100644
--- a/arch/arm/mach-davinci/include/mach/psc.h
+++ b/arch/arm/mach-davinci/include/mach/psc.h
@@ -244,12 +244,13 @@
#define PSC_STATE_ENABLE 3
#define MDSTAT_STATE_MASK 0x1f
+#define MDCTL_FORCE BIT(31)
#ifndef __ASSEMBLER__
extern int davinci_psc_is_clk_active(unsigned int ctlr, unsigned int id);
extern void davinci_psc_config(unsigned int domain, unsigned int ctlr,
- unsigned int id, u32 next_state);
+ unsigned int id, bool enable, u32 flags);
#endif
diff --git a/arch/arm/mach-davinci/psc.c b/arch/arm/mach-davinci/psc.c
index a4158040070..1fb6bdff38c 100644
--- a/arch/arm/mach-davinci/psc.c
+++ b/arch/arm/mach-davinci/psc.c
@@ -25,6 +25,8 @@
#include <mach/cputype.h>
#include <mach/psc.h>
+#include "clock.h"
+
/* Return nonzero iff the domain's clock is active */
int __init davinci_psc_is_clk_active(unsigned int ctlr, unsigned int id)
{
@@ -48,11 +50,12 @@ int __init davinci_psc_is_clk_active(unsigned int ctlr, unsigned int id)
/* Enable or disable a PSC domain */
void davinci_psc_config(unsigned int domain, unsigned int ctlr,
- unsigned int id, u32 next_state)
+ unsigned int id, bool enable, u32 flags)
{
u32 epcpr, ptcmd, ptstat, pdstat, pdctl1, mdstat, mdctl;
void __iomem *psc_base;
struct davinci_soc_info *soc_info = &davinci_soc_info;
+ u32 next_state = PSC_STATE_ENABLE;
if (!soc_info->psc_bases || (ctlr >= soc_info->psc_bases_num)) {
pr_warning("PSC: Bad psc data: 0x%x[%d]\n",
@@ -62,9 +65,18 @@ void davinci_psc_config(unsigned int domain, unsigned int ctlr,
psc_base = ioremap(soc_info->psc_bases[ctlr], SZ_4K);
+ if (!enable) {
+ if (flags & PSC_SWRSTDISABLE)
+ next_state = PSC_STATE_SWRSTDISABLE;
+ else
+ next_state = PSC_STATE_DISABLE;
+ }
+
mdctl = __raw_readl(psc_base + MDCTL + 4 * id);
mdctl &= ~MDSTAT_STATE_MASK;
mdctl |= next_state;
+ if (flags & PSC_FORCE)
+ mdctl |= MDCTL_FORCE;
__raw_writel(mdctl, psc_base + MDCTL + 4 * id);
pdstat = __raw_readl(psc_base + PDSTAT);