diff options
Diffstat (limited to 'arch/arm/mach-imx/pm-imx5.c')
| -rw-r--r-- | arch/arm/mach-imx/pm-imx5.c | 98 |
1 files changed, 78 insertions, 20 deletions
diff --git a/arch/arm/mach-imx/pm-imx5.c b/arch/arm/mach-imx/pm-imx5.c index 58aeaf5baaf6..f1f80ab73e69 100644 --- a/arch/arm/mach-imx/pm-imx5.c +++ b/arch/arm/mach-imx/pm-imx5.c @@ -19,9 +19,26 @@ #include "common.h" #include "cpuidle.h" -#include "crm-regs-imx5.h" #include "hardware.h" +#define MXC_CCM_CLPCR 0x54 +#define MXC_CCM_CLPCR_LPM_OFFSET 0 +#define MXC_CCM_CLPCR_LPM_MASK 0x3 +#define MXC_CCM_CLPCR_STBY_COUNT_OFFSET 9 +#define MXC_CCM_CLPCR_VSTBY (0x1 << 8) +#define MXC_CCM_CLPCR_SBYOS (0x1 << 6) + +#define MXC_CORTEXA8_PLAT_LPC 0xc +#define MXC_CORTEXA8_PLAT_LPC_DSM (1 << 0) +#define MXC_CORTEXA8_PLAT_LPC_DBG_DSM (1 << 1) + +#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 + /* * The WAIT_UNCLOCKED_POWER_OFF state only requires <= 500ns to exit. * This is also the lowest power state possible without affecting @@ -32,6 +49,30 @@ */ #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) +{ + ccm_base = base; +} + /* * set cpu low power mode before WFI instruction. This function is called * mx5 because it can be used for mx51, and mx53. @@ -43,12 +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(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); + ccm_clpcr = __raw_readl(ccm_base + MXC_CCM_CLPCR) & + ~(MXC_CCM_CLPCR_LPM_MASK); + 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: @@ -82,17 +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(ccm_clpcr, MXC_CCM_CLPCR); - __raw_writel(arm_srpgcr, MXC_SRPG_ARM_SRPGCR); - __raw_writel(arm_srpgcr, MXC_SRPG_NEON_SRPGCR); + __raw_writel(plat_lpc, cortex_base + MXC_CORTEXA8_PLAT_LPC); + __raw_writel(ccm_clpcr, ccm_base + MXC_CCM_CLPCR); + __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); } } @@ -114,8 +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(); @@ -149,7 +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"); @@ -163,15 +208,28 @@ static int __init imx5_pm_common_init(void) arm_pm_idle = imx5_pm_idle; + 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 imx51_pm_init(void) +{ + imx5_pm_common_init(&imx51_pm_data); } -void __init imx5_pm_init(void) +void __init imx53_pm_init(void) { - int ret = imx5_pm_common_init(); - if (!ret) - suspend_set_ops(&mx5_suspend_ops); + imx5_pm_common_init(&imx53_pm_data); } |