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ARM: imx5: use dynamic mapping for Cortex and GPC block 

The imx5 pm code uses static mapping to access Cortex and GPC registers.
The patch create struct imx5_pm_data to encode physical address of
Cortex and GPC block, and create dynamic mapping for them at run-time.

Signed-off-by: Shawn Guo <shawn.guo@freescale.com>
hifive-unleashed-5.1
Shawn Guo 2014-05-20 14:55:15 +08:00
parent 4ef5e38701
commit 36b66c3fc2
3 changed files with 60 additions and 34 deletions
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6
arch/arm/mach-imx/common.h
View File

@ -142,10 +142,12 @@ void imx6sl_pm_init(void);
void imx6q_pm_set_ccm_base(void __iomem *base);
#ifdef CONFIG_PM
void imx5_pm_init(void);
void imx51_pm_init(void);
void imx53_pm_init(void);
void imx5_pm_set_ccm_base(void __iomem *base);
#else
static inline void imx5_pm_init(void) {}
static inline void imx51_pm_init(void) {}
static inline void imx53_pm_init(void) {}
static inline void imx5_pm_set_ccm_base(void __iomem *base) {}
#endif

4
arch/arm/mach-imx/mm-imx5.c
View File

@ -96,10 +96,10 @@ void __init imx53_init_early(void)
void __init imx51_init_late(void)
{
mx51_neon_fixup();
imx5_pm_init();
imx51_pm_init();
}
void __init imx53_init_late(void)
{
imx5_pm_init();
imx53_pm_init();
}

84
arch/arm/mach-imx/pm-imx5.c
View File

@ -28,21 +28,14 @@
#define MXC_CCM_CLPCR_VSTBY (0x1 << 8)
#define MXC_CCM_CLPCR_SBYOS (0x1 << 6)
#define MX51_CORTEXA8_BASE MX51_IO_ADDRESS(MX51_ARM_BASE_ADDR)
#define MXC_CORTEXA8_PLAT_LPC (MX51_CORTEXA8_BASE + 0xc)
#define MXC_CORTEXA8_PLAT_LPC 0xc
#define MXC_CORTEXA8_PLAT_LPC_DSM (1 << 0)
#define MXC_CORTEXA8_PLAT_LPC_DBG_DSM (1 << 1)
#define MX51_GPC_BASE MX51_IO_ADDRESS(MX51_GPC_BASE_ADDR)
#define MXC_SRPG_NEON_BASE (MX51_GPC_BASE + 0x280)
#define MXC_SRPG_ARM_BASE (MX51_GPC_BASE + 0x2a0)
#define MXC_SRPG_EMPGC0_BASE (MX51_GPC_BASE + 0x2c0)
#define MXC_SRPG_EMPGC1_BASE (MX51_GPC_BASE + 0x2d0)
#define MXC_SRPG_NEON_SRPGCR (MXC_SRPG_NEON_BASE + 0x0)
#define MXC_SRPG_ARM_SRPGCR (MXC_SRPG_ARM_BASE + 0x0)
#define MXC_SRPG_EMPGC0_SRPGCR (MXC_SRPG_EMPGC0_BASE + 0x0)
#define MXC_SRPG_EMPGC1_SRPGCR (MXC_SRPG_EMPGC1_BASE + 0x0)
#define MXC_SRPG_NEON_SRPGCR 0x280
#define MXC_SRPG_ARM_SRPGCR 0x2a0
#define MXC_SRPG_EMPGC0_SRPGCR 0x2c0
#define MXC_SRPG_EMPGC1_SRPGCR 0x2d0
#define MXC_SRPGCR_PCR 1
@ -56,7 +49,24 @@
*/
#define IMX5_DEFAULT_CPU_IDLE_STATE WAIT_UNCLOCKED_POWER_OFF
struct imx5_pm_data {
phys_addr_t cortex_addr;
phys_addr_t gpc_addr;
};
static const struct imx5_pm_data imx51_pm_data __initconst = {
.cortex_addr = 0x83fa0000,
.gpc_addr = 0x73fd8000,
};
static const struct imx5_pm_data imx53_pm_data __initconst = {
.cortex_addr = 0x63fa0000,
.gpc_addr = 0x53fd8000,
};
static void __iomem *ccm_base;
static void __iomem *cortex_base;
static void __iomem *gpc_base;
void __init imx5_pm_set_ccm_base(void __iomem *base)
{
@ -74,13 +84,16 @@ static void mx5_cpu_lp_set(enum mxc_cpu_pwr_mode mode)
int stop_mode = 0;
/* always allow platform to issue a deep sleep mode request */
plat_lpc = __raw_readl(MXC_CORTEXA8_PLAT_LPC) &
plat_lpc = __raw_readl(cortex_base + MXC_CORTEXA8_PLAT_LPC) &
~(MXC_CORTEXA8_PLAT_LPC_DSM);
ccm_clpcr = __raw_readl(ccm_base + MXC_CCM_CLPCR) &
~(MXC_CCM_CLPCR_LPM_MASK);
arm_srpgcr = __raw_readl(MXC_SRPG_ARM_SRPGCR) & ~(MXC_SRPGCR_PCR);
empgc0 = __raw_readl(MXC_SRPG_EMPGC0_SRPGCR) & ~(MXC_SRPGCR_PCR);
empgc1 = __raw_readl(MXC_SRPG_EMPGC1_SRPGCR) & ~(MXC_SRPGCR_PCR);
arm_srpgcr = __raw_readl(gpc_base + MXC_SRPG_ARM_SRPGCR) &
~(MXC_SRPGCR_PCR);
empgc0 = __raw_readl(gpc_base + MXC_SRPG_EMPGC0_SRPGCR) &
~(MXC_SRPGCR_PCR);
empgc1 = __raw_readl(gpc_base + MXC_SRPG_EMPGC1_SRPGCR) &
~(MXC_SRPGCR_PCR);
switch (mode) {
case WAIT_CLOCKED:
@ -114,17 +127,17 @@ static void mx5_cpu_lp_set(enum mxc_cpu_pwr_mode mode)
return;
}
__raw_writel(plat_lpc, MXC_CORTEXA8_PLAT_LPC);
__raw_writel(plat_lpc, cortex_base + MXC_CORTEXA8_PLAT_LPC);
__raw_writel(ccm_clpcr, ccm_base + MXC_CCM_CLPCR);
__raw_writel(arm_srpgcr, MXC_SRPG_ARM_SRPGCR);
__raw_writel(arm_srpgcr, MXC_SRPG_NEON_SRPGCR);
__raw_writel(arm_srpgcr, gpc_base + MXC_SRPG_ARM_SRPGCR);
__raw_writel(arm_srpgcr, gpc_base + MXC_SRPG_NEON_SRPGCR);
if (stop_mode) {
empgc0 |= MXC_SRPGCR_PCR;
empgc1 |= MXC_SRPGCR_PCR;
__raw_writel(empgc0, MXC_SRPG_EMPGC0_SRPGCR);
__raw_writel(empgc1, MXC_SRPG_EMPGC1_SRPGCR);
__raw_writel(empgc0, gpc_base + MXC_SRPG_EMPGC0_SRPGCR);
__raw_writel(empgc1, gpc_base + MXC_SRPG_EMPGC1_SRPGCR);
}
}
@ -146,8 +159,8 @@ static int mx5_suspend_enter(suspend_state_t state)
flush_cache_all();
/*clear the EMPGC0/1 bits */
__raw_writel(0, MXC_SRPG_EMPGC0_SRPGCR);
__raw_writel(0, MXC_SRPG_EMPGC1_SRPGCR);
__raw_writel(0, gpc_base + MXC_SRPG_EMPGC0_SRPGCR);
__raw_writel(0, gpc_base + MXC_SRPG_EMPGC1_SRPGCR);
}
cpu_do_idle();
@ -181,7 +194,7 @@ static void imx5_pm_idle(void)
imx5_cpu_do_idle();
}
static int __init imx5_pm_common_init(void)
static int __init imx5_pm_common_init(const struct imx5_pm_data *data)
{
int ret;
struct clk *gpc_dvfs_clk = clk_get(NULL, "gpc_dvfs");
@ -195,17 +208,28 @@ static int __init imx5_pm_common_init(void)
arm_pm_idle = imx5_pm_idle;
WARN_ON(!ccm_base);
cortex_base = ioremap(data->cortex_addr, SZ_16K);
gpc_base = ioremap(data->gpc_addr, SZ_16K);
WARN_ON(!ccm_base || !cortex_base || !gpc_base);
/* Set the registers to the default cpu idle state. */
mx5_cpu_lp_set(IMX5_DEFAULT_CPU_IDLE_STATE);
return imx5_cpuidle_init();
ret = imx5_cpuidle_init();
if (ret)
pr_warn("%s: cpuidle init failed %d\n", __func__, ret);
suspend_set_ops(&mx5_suspend_ops);
return 0;
}
void __init imx5_pm_init(void)
void __init imx51_pm_init(void)
{
int ret = imx5_pm_common_init();
if (!ret)
suspend_set_ops(&mx5_suspend_ops);
imx5_pm_common_init(&imx51_pm_data);
}
void __init imx53_pm_init(void)
{
imx5_pm_common_init(&imx53_pm_data);
}