diff options
Diffstat (limited to 'target/linux/mediatek/patches/0036-mmc-mediatek-Add-PM-support-for-MMC-driver.patch')
-rw-r--r-- | target/linux/mediatek/patches/0036-mmc-mediatek-Add-PM-support-for-MMC-driver.patch | 204 |
1 files changed, 0 insertions, 204 deletions
diff --git a/target/linux/mediatek/patches/0036-mmc-mediatek-Add-PM-support-for-MMC-driver.patch b/target/linux/mediatek/patches/0036-mmc-mediatek-Add-PM-support-for-MMC-driver.patch deleted file mode 100644 index d806778..0000000 --- a/target/linux/mediatek/patches/0036-mmc-mediatek-Add-PM-support-for-MMC-driver.patch +++ /dev/null @@ -1,204 +0,0 @@ -From 4ca0e8a959569852b520b607d39ce6ceeeb0f518 Mon Sep 17 00:00:00 2001 -From: Chaotian Jing <chaotian.jing@mediatek.com> -Date: Mon, 15 Jun 2015 19:20:49 +0800 -Subject: [PATCH 36/76] mmc: mediatek: Add PM support for MMC driver - -Add PM support for Mediatek MMC driver -Save/restore registers when PM - -Signed-off-by: Chaotian Jing <chaotian.jing@mediatek.com> ---- - drivers/mmc/host/mtk-sd.c | 89 +++++++++++++++++++++++++++++++++++++++++++-- - 1 file changed, 86 insertions(+), 3 deletions(-) - ---- a/drivers/mmc/host/mtk-sd.c -+++ b/drivers/mmc/host/mtk-sd.c -@@ -22,6 +22,8 @@ - #include <linux/of_gpio.h> - #include <linux/pinctrl/consumer.h> - #include <linux/platform_device.h> -+#include <linux/pm.h> -+#include <linux/pm_runtime.h> - #include <linux/regulator/consumer.h> - #include <linux/spinlock.h> - -@@ -212,6 +214,7 @@ - #define MSDC_ASYNC_FLAG (0x1 << 1) - #define MSDC_MMAP_FLAG (0x1 << 2) - -+#define MTK_MMC_AUTOSUSPEND_DELAY 50 - #define CMD_TIMEOUT (HZ/10 * 5) /* 100ms x5 */ - #define DAT_TIMEOUT (HZ * 5) /* 1000ms x5 */ - -@@ -254,6 +257,15 @@ struct msdc_dma { - dma_addr_t bd_addr; /* the physical address of bd array */ - }; - -+struct msdc_save_para { -+ u32 msdc_cfg; -+ u32 iocon; -+ u32 sdc_cfg; -+ u32 pad_tune; -+ u32 patch_bit0; -+ u32 patch_bit1; -+}; -+ - struct msdc_host { - struct device *dev; - struct mmc_host *mmc; /* mmc structure */ -@@ -286,6 +298,7 @@ struct msdc_host { - u32 sclk; /* SD/MS bus clock frequency */ - bool ddr; - bool vqmmc_enabled; -+ struct msdc_save_para save_para; /* used when gate HCLK */ - }; - - static void sdr_set_bits(void __iomem *reg, u32 bs) -@@ -677,6 +690,9 @@ static void msdc_request_done(struct msd - if (mrq->data) - msdc_unprepare_data(host, mrq); - mmc_request_done(host->mmc, mrq); -+ -+ pm_runtime_mark_last_busy(host->dev); -+ pm_runtime_put_autosuspend(host->dev); - } - - /* returns true if command is fully handled; returns false otherwise */ -@@ -831,6 +847,8 @@ static void msdc_ops_request(struct mmc_ - WARN_ON(host->mrq); - host->mrq = mrq; - -+ pm_runtime_get_sync(host->dev); -+ - if (mrq->data) - msdc_prepare_data(host, mrq); - -@@ -1145,6 +1163,8 @@ static void msdc_ops_set_ios(struct mmc_ - int ret; - u32 ddr = 0; - -+ pm_runtime_get_sync(host->dev); -+ - if (ios->timing == MMC_TIMING_UHS_DDR50 || - ios->timing == MMC_TIMING_MMC_DDR52) - ddr = 1; -@@ -1159,7 +1179,7 @@ static void msdc_ops_set_ios(struct mmc_ - ios->vdd); - if (ret) { - dev_err(host->dev, "Failed to set vmmc power!\n"); -- return; -+ goto end; - } - } - break; -@@ -1187,6 +1207,10 @@ static void msdc_ops_set_ios(struct mmc_ - - if (host->mclk != ios->clock || host->ddr != ddr) - msdc_set_mclk(host, ddr, ios->clock); -+ -+end: -+ pm_runtime_mark_last_busy(host->dev); -+ pm_runtime_put_autosuspend(host->dev); - } - - static struct mmc_host_ops mt_msdc_ops = { -@@ -1310,12 +1334,18 @@ static int msdc_drv_probe(struct platfor - if (ret) - goto release; - -+ pm_runtime_set_active(host->dev); -+ pm_runtime_set_autosuspend_delay(host->dev, MTK_MMC_AUTOSUSPEND_DELAY); -+ pm_runtime_use_autosuspend(host->dev); -+ pm_runtime_enable(host->dev); - ret = mmc_add_host(mmc); -+ - if (ret) -- goto release; -+ goto end; - - return 0; -- -+end: -+ pm_runtime_disable(host->dev); - release: - platform_set_drvdata(pdev, NULL); - msdc_deinit_hw(host); -@@ -1343,11 +1373,15 @@ static int msdc_drv_remove(struct platfo - mmc = platform_get_drvdata(pdev); - host = mmc_priv(mmc); - -+ pm_runtime_get_sync(host->dev); -+ - platform_set_drvdata(pdev, NULL); - mmc_remove_host(host->mmc); - msdc_deinit_hw(host); - msdc_gate_clock(host); - -+ pm_runtime_disable(host->dev); -+ pm_runtime_put_noidle(host->dev); - dma_free_coherent(&pdev->dev, - sizeof(struct mt_gpdma_desc), - host->dma.gpd, host->dma.gpd_addr); -@@ -1359,6 +1393,54 @@ static int msdc_drv_remove(struct platfo - return 0; - } - -+#ifdef CONFIG_PM -+static void msdc_save_reg(struct msdc_host *host) -+{ -+ host->save_para.msdc_cfg = readl(host->base + MSDC_CFG); -+ host->save_para.iocon = readl(host->base + MSDC_IOCON); -+ host->save_para.sdc_cfg = readl(host->base + SDC_CFG); -+ host->save_para.pad_tune = readl(host->base + MSDC_PAD_TUNE); -+ host->save_para.patch_bit0 = readl(host->base + MSDC_PATCH_BIT); -+ host->save_para.patch_bit1 = readl(host->base + MSDC_PATCH_BIT1); -+} -+ -+static void msdc_restore_reg(struct msdc_host *host) -+{ -+ writel(host->save_para.msdc_cfg, host->base + MSDC_CFG); -+ writel(host->save_para.iocon, host->base + MSDC_IOCON); -+ writel(host->save_para.sdc_cfg, host->base + SDC_CFG); -+ writel(host->save_para.pad_tune, host->base + MSDC_PAD_TUNE); -+ writel(host->save_para.patch_bit0, host->base + MSDC_PATCH_BIT); -+ writel(host->save_para.patch_bit1, host->base + MSDC_PATCH_BIT1); -+} -+ -+static int msdc_runtime_suspend(struct device *dev) -+{ -+ struct mmc_host *mmc = dev_get_drvdata(dev); -+ struct msdc_host *host = mmc_priv(mmc); -+ -+ msdc_save_reg(host); -+ msdc_gate_clock(host); -+ return 0; -+} -+ -+static int msdc_runtime_resume(struct device *dev) -+{ -+ struct mmc_host *mmc = dev_get_drvdata(dev); -+ struct msdc_host *host = mmc_priv(mmc); -+ -+ msdc_ungate_clock(host); -+ msdc_restore_reg(host); -+ return 0; -+} -+#endif -+ -+static const struct dev_pm_ops msdc_dev_pm_ops = { -+ SET_SYSTEM_SLEEP_PM_OPS(pm_runtime_force_suspend, -+ pm_runtime_force_resume) -+ SET_RUNTIME_PM_OPS(msdc_runtime_suspend, msdc_runtime_resume, NULL) -+}; -+ - static const struct of_device_id msdc_of_ids[] = { - { .compatible = "mediatek,mt8135-mmc", }, - {} -@@ -1370,6 +1452,7 @@ static struct platform_driver mt_msdc_dr - .driver = { - .name = "mtk-msdc", - .of_match_table = msdc_of_ids, -+ .pm = &msdc_dev_pm_ops, - }, - }; - |