ARM: OMAP2+: pm33xx: Add support for rtc+ddr in self refresh mode (44c22a2d) · Commits · 戴 / test

arch/arm/mach-omap2/pm33xx-core.c

+75 −1

Original line number	Diff line number	Diff line
		@@ -10,6 +10,12 @@
		#include <asm/suspend.h>
		#include <linux/errno.h>
		#include <linux/platform_data/pm33xx.h>
		#include <linux/clk.h>
		#include <linux/platform_data/gpio-omap.h>
		#include <linux/pinctrl/pinmux.h>
		#include <linux/wkup_m3_ipc.h>
		#include <linux/of.h>
		#include <linux/rtc.h>

		#include "cm33xx.h"
		#include "common.h"
		@@ -38,6 +44,29 @@ static int am43xx_map_scu(void)
		return 0;
		}

		static int am33xx_check_off_mode_enable(void)
		{
		if (enable_off_mode)
		pr_warn("WARNING: This platform does not support off-mode, entering DeepSleep suspend.\n");

		/* off mode not supported on am335x so return 0 always */
		return 0;
		}

		static int am43xx_check_off_mode_enable(void)
		{
		/*
		* Check for am437x-gp-evm which has the right Hardware design to
		* support this mode reliably.
		*/
		if (of_machine_is_compatible("ti,am437x-gp-evm") && enable_off_mode)
		return enable_off_mode;
		else if (enable_off_mode)
		pr_warn("WARNING: This platform does not support off-mode, entering DeepSleep suspend.\n");

		return 0;
		}

		static int amx3_common_init(void)
		{
		gfx_pwrdm = pwrdm_lookup("gfx_pwrdm");
		@@ -139,6 +168,8 @@ static int am43xx_suspend(unsigned int state, int (*fn)(unsigned long),
		scu_power_mode(scu_base, SCU_PM_POWEROFF);
		ret = cpu_suspend(args, fn);
		scu_power_mode(scu_base, SCU_PM_NORMAL);

		if (!am43xx_check_off_mode_enable())
		amx3_post_suspend_common();

		return ret;
		@@ -161,10 +192,48 @@ void __iomem *am43xx_get_rtc_base_addr(void)
		return omap_hwmod_get_mpu_rt_va(rtc_oh);
		}

		static void am43xx_save_context(void)
		{
		}

		static void am33xx_save_context(void)
		{
		omap_intc_save_context();
		}

		static void am33xx_restore_context(void)
		{
		omap_intc_restore_context();
		}

		static void am43xx_restore_context(void)
		{
		/*
		* HACK: restore dpll_per_clkdcoldo register contents, to avoid
		* breaking suspend-resume
		*/
		writel_relaxed(0x0, AM33XX_L4_WK_IO_ADDRESS(0x44df2e14));
		}

		static void am43xx_prepare_rtc_suspend(void)
		{
		omap_hwmod_enable(rtc_oh);
		}

		static void am43xx_prepare_rtc_resume(void)
		{
		omap_hwmod_idle(rtc_oh);
		}

		static struct am33xx_pm_platform_data am33xx_ops = {
		.init = am33xx_suspend_init,
		.soc_suspend = am33xx_suspend,
		.get_sram_addrs = amx3_get_sram_addrs,
		.save_context = am33xx_save_context,
		.restore_context = am33xx_restore_context,
		.prepare_rtc_suspend = am43xx_prepare_rtc_suspend,
		.prepare_rtc_resume = am43xx_prepare_rtc_resume,
		.check_off_mode_enable = am33xx_check_off_mode_enable,
		.get_rtc_base_addr = am43xx_get_rtc_base_addr,
		};

		@@ -172,6 +241,11 @@ static struct am33xx_pm_platform_data am43xx_ops = {
		.init = am43xx_suspend_init,
		.soc_suspend = am43xx_suspend,
		.get_sram_addrs = amx3_get_sram_addrs,
		.save_context = am43xx_save_context,
		.restore_context = am43xx_restore_context,
		.prepare_rtc_suspend = am43xx_prepare_rtc_suspend,
		.prepare_rtc_resume = am43xx_prepare_rtc_resume,
		.check_off_mode_enable = am43xx_check_off_mode_enable,
		.get_rtc_base_addr = am43xx_get_rtc_base_addr,
		};

include/linux/platform_data/pm33xx.h

+5 −0

Original line number	Diff line number	Diff line
		@@ -51,6 +51,11 @@ struct am33xx_pm_platform_data {
		unsigned long args);
		struct am33xx_pm_sram_addr (get_sram_addrs)(void);
		void __iomem (get_rtc_base_addr)(void);
		void (*save_context)(void);
		void (*restore_context)(void);
		void (*prepare_rtc_suspend)(void);
		void (*prepare_rtc_resume)(void);
		int (*check_off_mode_enable)(void);
		};

		struct am33xx_pm_sram_data {

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