#include <linux/suspend.h>
#include <linux/syscore_ops.h>
#include <linux/io.h>
+#include <linux/err.h>
+#include <linux/clk.h>
#include <asm/cacheflush.h>
#include <asm/hardware/cache-l2x0.h>
#include <plat/cpu.h>
#include <plat/pm.h>
+#include <plat/pll.h>
+#include <plat/regs-srom.h>
#include <mach/regs-irq.h>
#include <mach/regs-gpio.h>
#include <mach/regs-clock.h>
#include <mach/regs-pmu.h>
#include <mach/pm-core.h>
-
-static struct sleep_save exynos4_sleep[] = {
- { .reg = S5P_ARM_CORE0_LOWPWR , .val = 0x2, },
- { .reg = S5P_DIS_IRQ_CORE0 , .val = 0x0, },
- { .reg = S5P_DIS_IRQ_CENTRAL0 , .val = 0x0, },
- { .reg = S5P_ARM_CORE1_LOWPWR , .val = 0x2, },
- { .reg = S5P_DIS_IRQ_CORE1 , .val = 0x0, },
- { .reg = S5P_DIS_IRQ_CENTRAL1 , .val = 0x0, },
- { .reg = S5P_ARM_COMMON_LOWPWR , .val = 0x2, },
- { .reg = S5P_L2_0_LOWPWR , .val = 0x3, },
- { .reg = S5P_L2_1_LOWPWR , .val = 0x3, },
- { .reg = S5P_CMU_ACLKSTOP_LOWPWR , .val = 0x0, },
- { .reg = S5P_CMU_SCLKSTOP_LOWPWR , .val = 0x0, },
- { .reg = S5P_CMU_RESET_LOWPWR , .val = 0x0, },
- { .reg = S5P_APLL_SYSCLK_LOWPWR , .val = 0x0, },
- { .reg = S5P_MPLL_SYSCLK_LOWPWR , .val = 0x0, },
- { .reg = S5P_VPLL_SYSCLK_LOWPWR , .val = 0x0, },
- { .reg = S5P_EPLL_SYSCLK_LOWPWR , .val = 0x0, },
- { .reg = S5P_CMU_CLKSTOP_GPS_ALIVE_LOWPWR , .val = 0x0, },
- { .reg = S5P_CMU_RESET_GPSALIVE_LOWPWR , .val = 0x0, },
- { .reg = S5P_CMU_CLKSTOP_CAM_LOWPWR , .val = 0x0, },
- { .reg = S5P_CMU_CLKSTOP_TV_LOWPWR , .val = 0x0, },
- { .reg = S5P_CMU_CLKSTOP_MFC_LOWPWR , .val = 0x0, },
- { .reg = S5P_CMU_CLKSTOP_G3D_LOWPWR , .val = 0x0, },
- { .reg = S5P_CMU_CLKSTOP_LCD0_LOWPWR , .val = 0x0, },
- { .reg = S5P_CMU_CLKSTOP_LCD1_LOWPWR , .val = 0x0, },
- { .reg = S5P_CMU_CLKSTOP_MAUDIO_LOWPWR , .val = 0x0, },
- { .reg = S5P_CMU_CLKSTOP_GPS_LOWPWR , .val = 0x0, },
- { .reg = S5P_CMU_RESET_CAM_LOWPWR , .val = 0x0, },
- { .reg = S5P_CMU_RESET_TV_LOWPWR , .val = 0x0, },
- { .reg = S5P_CMU_RESET_MFC_LOWPWR , .val = 0x0, },
- { .reg = S5P_CMU_RESET_G3D_LOWPWR , .val = 0x0, },
- { .reg = S5P_CMU_RESET_LCD0_LOWPWR , .val = 0x0, },
- { .reg = S5P_CMU_RESET_LCD1_LOWPWR , .val = 0x0, },
- { .reg = S5P_CMU_RESET_MAUDIO_LOWPWR , .val = 0x0, },
- { .reg = S5P_CMU_RESET_GPS_LOWPWR , .val = 0x0, },
- { .reg = S5P_TOP_BUS_LOWPWR , .val = 0x0, },
- { .reg = S5P_TOP_RETENTION_LOWPWR , .val = 0x1, },
- { .reg = S5P_TOP_PWR_LOWPWR , .val = 0x3, },
- { .reg = S5P_LOGIC_RESET_LOWPWR , .val = 0x0, },
- { .reg = S5P_ONENAND_MEM_LOWPWR , .val = 0x0, },
- { .reg = S5P_MODIMIF_MEM_LOWPWR , .val = 0x0, },
- { .reg = S5P_G2D_ACP_MEM_LOWPWR , .val = 0x0, },
- { .reg = S5P_USBOTG_MEM_LOWPWR , .val = 0x0, },
- { .reg = S5P_HSMMC_MEM_LOWPWR , .val = 0x0, },
- { .reg = S5P_CSSYS_MEM_LOWPWR , .val = 0x0, },
- { .reg = S5P_SECSS_MEM_LOWPWR , .val = 0x0, },
- { .reg = S5P_PCIE_MEM_LOWPWR , .val = 0x0, },
- { .reg = S5P_SATA_MEM_LOWPWR , .val = 0x0, },
- { .reg = S5P_PAD_RETENTION_DRAM_LOWPWR , .val = 0x0, },
- { .reg = S5P_PAD_RETENTION_MAUDIO_LOWPWR , .val = 0x0, },
- { .reg = S5P_PAD_RETENTION_GPIO_LOWPWR , .val = 0x0, },
- { .reg = S5P_PAD_RETENTION_UART_LOWPWR , .val = 0x0, },
- { .reg = S5P_PAD_RETENTION_MMCA_LOWPWR , .val = 0x0, },
- { .reg = S5P_PAD_RETENTION_MMCB_LOWPWR , .val = 0x0, },
- { .reg = S5P_PAD_RETENTION_EBIA_LOWPWR , .val = 0x0, },
- { .reg = S5P_PAD_RETENTION_EBIB_LOWPWR , .val = 0x0, },
- { .reg = S5P_PAD_RETENTION_ISOLATION_LOWPWR , .val = 0x0, },
- { .reg = S5P_PAD_RETENTION_ALV_SEL_LOWPWR , .val = 0x0, },
- { .reg = S5P_XUSBXTI_LOWPWR , .val = 0x0, },
- { .reg = S5P_XXTI_LOWPWR , .val = 0x0, },
- { .reg = S5P_EXT_REGULATOR_LOWPWR , .val = 0x0, },
- { .reg = S5P_GPIO_MODE_LOWPWR , .val = 0x0, },
- { .reg = S5P_GPIO_MODE_MAUDIO_LOWPWR , .val = 0x0, },
- { .reg = S5P_CAM_LOWPWR , .val = 0x0, },
- { .reg = S5P_TV_LOWPWR , .val = 0x0, },
- { .reg = S5P_MFC_LOWPWR , .val = 0x0, },
- { .reg = S5P_G3D_LOWPWR , .val = 0x0, },
- { .reg = S5P_LCD0_LOWPWR , .val = 0x0, },
- { .reg = S5P_LCD1_LOWPWR , .val = 0x0, },
- { .reg = S5P_MAUDIO_LOWPWR , .val = 0x0, },
- { .reg = S5P_GPS_LOWPWR , .val = 0x0, },
- { .reg = S5P_GPS_ALIVE_LOWPWR , .val = 0x0, },
-};
+#include <mach/pmu.h>
static struct sleep_save exynos4_set_clksrc[] = {
{ .reg = S5P_CLKSRC_MASK_TOP , .val = 0x00000001, },
{ .reg = S5P_CLKSRC_MASK_DMC , .val = 0x00010000, },
};
+static struct sleep_save exynos4_epll_save[] = {
+ SAVE_ITEM(S5P_EPLL_CON0),
+ SAVE_ITEM(S5P_EPLL_CON1),
+};
+
+static struct sleep_save exynos4_vpll_save[] = {
+ SAVE_ITEM(S5P_VPLL_CON0),
+ SAVE_ITEM(S5P_VPLL_CON1),
+};
+
static struct sleep_save exynos4_core_save[] = {
/* CMU side */
SAVE_ITEM(S5P_CLKDIV_LEFTBUS),
SAVE_ITEM(S5P_CLKGATE_IP_LEFTBUS),
SAVE_ITEM(S5P_CLKDIV_RIGHTBUS),
SAVE_ITEM(S5P_CLKGATE_IP_RIGHTBUS),
- SAVE_ITEM(S5P_EPLL_CON0),
- SAVE_ITEM(S5P_EPLL_CON1),
- SAVE_ITEM(S5P_VPLL_CON0),
- SAVE_ITEM(S5P_VPLL_CON1),
SAVE_ITEM(S5P_CLKSRC_TOP0),
SAVE_ITEM(S5P_CLKSRC_TOP1),
SAVE_ITEM(S5P_CLKSRC_CAM),
+ SAVE_ITEM(S5P_CLKSRC_TV),
SAVE_ITEM(S5P_CLKSRC_MFC),
+ SAVE_ITEM(S5P_CLKSRC_G3D),
SAVE_ITEM(S5P_CLKSRC_IMAGE),
SAVE_ITEM(S5P_CLKSRC_LCD0),
SAVE_ITEM(S5P_CLKSRC_LCD1),
SAVE_ITEM(S5P_CLKDIV_PERIL4),
SAVE_ITEM(S5P_CLKDIV_PERIL5),
SAVE_ITEM(S5P_CLKDIV_TOP),
+ SAVE_ITEM(S5P_CLKSRC_MASK_TOP),
SAVE_ITEM(S5P_CLKSRC_MASK_CAM),
SAVE_ITEM(S5P_CLKSRC_MASK_TV),
SAVE_ITEM(S5P_CLKSRC_MASK_LCD0),
SAVE_ITEM(S5P_CLKSRC_MASK_FSYS),
SAVE_ITEM(S5P_CLKSRC_MASK_PERIL0),
SAVE_ITEM(S5P_CLKSRC_MASK_PERIL1),
+ SAVE_ITEM(S5P_CLKDIV2_RATIO),
SAVE_ITEM(S5P_CLKGATE_SCLKCAM),
SAVE_ITEM(S5P_CLKGATE_IP_CAM),
SAVE_ITEM(S5P_CLKGATE_IP_TV),
SAVE_ITEM(S5P_CLKGATE_IP_DMC),
SAVE_ITEM(S5P_CLKSRC_CPU),
SAVE_ITEM(S5P_CLKDIV_CPU),
+ SAVE_ITEM(S5P_CLKDIV_CPU + 0x4),
SAVE_ITEM(S5P_CLKGATE_SCLKCPU),
SAVE_ITEM(S5P_CLKGATE_IP_CPU),
+
/* GIC side */
SAVE_ITEM(S5P_VA_GIC_CPU + 0x000),
SAVE_ITEM(S5P_VA_GIC_CPU + 0x004),
SAVE_ITEM(S5P_VA_COMBINER_BASE + 0x070),
SAVE_ITEM(S5P_VA_COMBINER_BASE + 0x080),
SAVE_ITEM(S5P_VA_COMBINER_BASE + 0x090),
+
+ /* SROM side */
+ SAVE_ITEM(S5P_SROM_BW),
+ SAVE_ITEM(S5P_SROM_BC0),
+ SAVE_ITEM(S5P_SROM_BC1),
+ SAVE_ITEM(S5P_SROM_BC2),
+ SAVE_ITEM(S5P_SROM_BC3),
};
static struct sleep_save exynos4_l2cc_save[] = {
SAVE_ITEM(S5P_VA_L2CC + L2X0_AUX_CTRL),
};
+/* For Cortex-A9 Diagnostic and Power control register */
+static unsigned int save_arm_register[2];
+
static int exynos4_cpu_suspend(unsigned long arg)
{
- unsigned long tmp;
- unsigned long mask = 0xFFFFFFFF;
-
- /* Setting Central Sequence Register for power down mode */
-
- tmp = __raw_readl(S5P_CENTRAL_SEQ_CONFIGURATION);
- tmp &= ~(S5P_CENTRAL_LOWPWR_CFG);
- __raw_writel(tmp, S5P_CENTRAL_SEQ_CONFIGURATION);
-
- /* Setting Central Sequence option Register */
-
- tmp = __raw_readl(S5P_CENTRAL_SEQ_OPTION);
- tmp &= ~(S5P_USE_MASK);
- tmp |= S5P_USE_STANDBY_WFI0;
- __raw_writel(tmp, S5P_CENTRAL_SEQ_OPTION);
-
- /* Clear all interrupt pending to avoid early wakeup */
-
- __raw_writel(mask, (S5P_VA_GIC_DIST + 0x280));
- __raw_writel(mask, (S5P_VA_GIC_DIST + 0x284));
- __raw_writel(mask, (S5P_VA_GIC_DIST + 0x288));
-
- /* Disable all interrupt */
-
- __raw_writel(0x0, (S5P_VA_GIC_CPU + 0x000));
- __raw_writel(0x0, (S5P_VA_GIC_DIST + 0x000));
- __raw_writel(mask, (S5P_VA_GIC_DIST + 0x184));
- __raw_writel(mask, (S5P_VA_GIC_DIST + 0x188));
-
outer_flush_all();
/* issue the standby signal into the pm unit. */
s3c_pm_do_save(exynos4_core_save, ARRAY_SIZE(exynos4_core_save));
s3c_pm_do_save(exynos4_l2cc_save, ARRAY_SIZE(exynos4_l2cc_save));
+ s3c_pm_do_save(exynos4_epll_save, ARRAY_SIZE(exynos4_epll_save));
+ s3c_pm_do_save(exynos4_vpll_save, ARRAY_SIZE(exynos4_vpll_save));
tmp = __raw_readl(S5P_INFORM1);
/* Set value of power down register for sleep mode */
- s3c_pm_do_restore_core(exynos4_sleep, ARRAY_SIZE(exynos4_sleep));
+ exynos4_sys_powerdown_conf(SYS_SLEEP);
__raw_writel(S5P_CHECK_SLEEP, S5P_INFORM1);
/* ensure at least INFORM0 has the resume address */
flush_cache_all();
}
+static unsigned long pll_base_rate;
+
+static void exynos4_restore_pll(void)
+{
+ unsigned long pll_con, locktime, lockcnt;
+ unsigned long pll_in_rate;
+ unsigned int p_div, epll_wait = 0, vpll_wait = 0;
+
+ if (pll_base_rate == 0)
+ return;
+
+ pll_in_rate = pll_base_rate;
+
+ /* EPLL */
+ pll_con = exynos4_epll_save[0].val;
+
+ if (pll_con & (1 << 31)) {
+ pll_con &= (PLL46XX_PDIV_MASK << PLL46XX_PDIV_SHIFT);
+ p_div = (pll_con >> PLL46XX_PDIV_SHIFT);
+
+ pll_in_rate /= 1000000;
+
+ locktime = (3000 / pll_in_rate) * p_div;
+ lockcnt = locktime * 10000 / (10000 / pll_in_rate);
+
+ __raw_writel(lockcnt, S5P_EPLL_LOCK);
+
+ s3c_pm_do_restore_core(exynos4_epll_save,
+ ARRAY_SIZE(exynos4_epll_save));
+ epll_wait = 1;
+ }
+
+ pll_in_rate = pll_base_rate;
+
+ /* VPLL */
+ pll_con = exynos4_vpll_save[0].val;
+
+ if (pll_con & (1 << 31)) {
+ pll_in_rate /= 1000000;
+ /* 750us */
+ locktime = 750;
+ lockcnt = locktime * 10000 / (10000 / pll_in_rate);
+
+ __raw_writel(lockcnt, S5P_VPLL_LOCK);
+
+ s3c_pm_do_restore_core(exynos4_vpll_save,
+ ARRAY_SIZE(exynos4_vpll_save));
+ vpll_wait = 1;
+ }
+
+ /* Wait PLL locking */
+
+ do {
+ if (epll_wait) {
+ pll_con = __raw_readl(S5P_EPLL_CON0);
+ if (pll_con & (1 << S5P_EPLLCON0_LOCKED_SHIFT))
+ epll_wait = 0;
+ }
+
+ if (vpll_wait) {
+ pll_con = __raw_readl(S5P_VPLL_CON0);
+ if (pll_con & (1 << S5P_VPLLCON0_LOCKED_SHIFT))
+ vpll_wait = 0;
+ }
+ } while (epll_wait || vpll_wait);
+}
+
static struct sysdev_driver exynos4_pm_driver = {
.add = exynos4_pm_add,
};
static __init int exynos4_pm_drvinit(void)
{
+ struct clk *pll_base;
unsigned int tmp;
s3c_pm_init();
tmp |= ((0xFF << 8) | (0x1F << 1));
__raw_writel(tmp, S5P_WAKEUP_MASK);
+ pll_base = clk_get(NULL, "xtal");
+
+ if (!IS_ERR(pll_base)) {
+ pll_base_rate = clk_get_rate(pll_base);
+ clk_put(pll_base);
+ }
+
return sysdev_driver_register(&exynos4_sysclass, &exynos4_pm_driver);
}
arch_initcall(exynos4_pm_drvinit);
+static int exynos4_pm_suspend(void)
+{
+ unsigned long tmp;
+
+ /* Setting Central Sequence Register for power down mode */
+
+ tmp = __raw_readl(S5P_CENTRAL_SEQ_CONFIGURATION);
+ tmp &= ~S5P_CENTRAL_LOWPWR_CFG;
+ __raw_writel(tmp, S5P_CENTRAL_SEQ_CONFIGURATION);
+
+ /* Save Power control register */
+ asm ("mrc p15, 0, %0, c15, c0, 0"
+ : "=r" (tmp) : : "cc");
+ save_arm_register[0] = tmp;
+
+ /* Save Diagnostic register */
+ asm ("mrc p15, 0, %0, c15, c0, 1"
+ : "=r" (tmp) : : "cc");
+ save_arm_register[1] = tmp;
+
+ return 0;
+}
+
static void exynos4_pm_resume(void)
{
+ unsigned long tmp;
+
+ /*
+ * If PMU failed while entering sleep mode, WFI will be
+ * ignored by PMU and then exiting cpu_do_idle().
+ * S5P_CENTRAL_LOWPWR_CFG bit will not be set automatically
+ * in this situation.
+ */
+ tmp = __raw_readl(S5P_CENTRAL_SEQ_CONFIGURATION);
+ if (!(tmp & S5P_CENTRAL_LOWPWR_CFG)) {
+ tmp |= S5P_CENTRAL_LOWPWR_CFG;
+ __raw_writel(tmp, S5P_CENTRAL_SEQ_CONFIGURATION);
+ /* No need to perform below restore code */
+ goto early_wakeup;
+ }
+ /* Restore Power control register */
+ tmp = save_arm_register[0];
+ asm volatile ("mcr p15, 0, %0, c15, c0, 0"
+ : : "r" (tmp)
+ : "cc");
+
+ /* Restore Diagnostic register */
+ tmp = save_arm_register[1];
+ asm volatile ("mcr p15, 0, %0, c15, c0, 1"
+ : : "r" (tmp)
+ : "cc");
+
/* For release retention */
__raw_writel((1 << 28), S5P_PAD_RET_MAUDIO_OPTION);
s3c_pm_do_restore_core(exynos4_core_save, ARRAY_SIZE(exynos4_core_save));
+ exynos4_restore_pll();
+
exynos4_scu_enable(S5P_VA_SCU);
#ifdef CONFIG_CACHE_L2X0
/* enable L2X0*/
writel_relaxed(1, S5P_VA_L2CC + L2X0_CTRL);
#endif
+
+early_wakeup:
+ return;
}
static struct syscore_ops exynos4_pm_syscore_ops = {
+ .suspend = exynos4_pm_suspend,
.resume = exynos4_pm_resume,
};
git.openpandora.org / pandora-kernel.git / blobdiff