add device pm for spi

add device pm for spi

Signed-off-by: Ziv.Xu <Ziv.Xu@starfivetech.com>

diff --git a/drivers/spi/spi-pl022-starfive.c b/drivers/spi/spi-pl022-starfive.c
index c783cc9..1e08aae 100755 (executable)
--- a/drivers/spi/spi-pl022-starfive.c
+++ b/drivers/spi/spi-pl022-starfive.c
@@ -669,7 +669,6 @@ static void load_ssp_default_config(struct pl022 *pl022)
  */
 static void readwriter(struct pl022 *pl022)
 {
-
        /*
         * The FIFO depth is different between primecell variants.
         * I believe filling in too much in the FIFO might cause
@@ -2156,10 +2155,7 @@ static int pl022_probe(struct amba_device *adev, const struct amba_id *id)
        master->cleanup = pl022_cleanup;
        master->setup = pl022_setup;
        /* If open CONFIG_PM, auto_runtime_pm should be false when of-platform.*/
-       if (platform_flag)
-               master->auto_runtime_pm = false;
-       else
-               master->auto_runtime_pm = true;
+       master->auto_runtime_pm = true;
        master->transfer_one_message = pl022_transfer_one_message;
        master->unprepare_transfer_hardware = pl022_unprepare_transfer_hardware;
        master->rt = platform_info->rt;
@@ -2267,6 +2263,7 @@ static int pl022_probe(struct amba_device *adev, const struct amba_id *id)
 
        /* Register with the SPI framework */
        amba_set_drvdata(adev, pl022);
+
        if (platform_flag)
                status = spi_register_master(master);
        else
@@ -2277,7 +2274,8 @@ static int pl022_probe(struct amba_device *adev, const struct amba_id *id)
                goto err_spi_register;
        }
        dev_dbg(dev, "probe succeeded\n");
-
+       if (!platform_flag)
+               platform_info->autosuspend_delay = 100;
        /* let runtime pm put suspend */
        if (platform_info->autosuspend_delay > 0) {
                dev_info(&adev->dev,
@@ -2287,7 +2285,10 @@ static int pl022_probe(struct amba_device *adev, const struct amba_id *id)
                        platform_info->autosuspend_delay);
                pm_runtime_use_autosuspend(dev);
        }
-       pm_runtime_put(dev);
+       if (platform_flag)
+               clk_disable_unprepare(pl022->clk);
+       else
+               pm_runtime_put(dev);
 
        return 0;
 
@@ -2359,7 +2360,8 @@ static int pl022_suspend(struct device *dev)
 
        pinctrl_pm_select_sleep_state(dev);
 
-       dev_dbg(dev, "suspended\n");
+       dev_dbg(dev, "starfive spi suspended\n");
+
        return 0;
 }
 
@@ -2375,7 +2377,7 @@ static int pl022_resume(struct device *dev)
        /* Start the queue running */
        ret = spi_master_resume(pl022->master);
        if (!ret)
-               dev_dbg(dev, "resumed\n");
+               dev_dbg(dev, "starfive spi resumed\n");
 
        return ret;
 }
@@ -2389,6 +2391,8 @@ static int pl022_runtime_suspend(struct device *dev)
        clk_disable_unprepare(pl022->clk);
        pinctrl_pm_select_idle_state(dev);
 
+       dev_dbg(dev, "starfive spi runtime suspend");
+
        return 0;
 }
 
@@ -2399,6 +2403,7 @@ static int pl022_runtime_resume(struct device *dev)
        pinctrl_pm_select_default_state(dev);
        clk_prepare_enable(pl022->clk);
 
+       dev_dbg(dev, "stafive spi runtime resume");
        return 0;
 }
 #endif
@@ -2553,12 +2558,17 @@ static int starfive_of_pl022_probe(struct platform_device *pdev)
        if (ret)
                goto err_probe;
 
-       pm_runtime_get_noresume(dev);
-       pm_runtime_set_active(dev);
-       pm_runtime_enable(dev);
-
        ret = pl022_probe(pcdev, &id);
 
+       struct pl022 *pl022 = amba_get_drvdata(pcdev);
+
+       pl022->master->dev.parent = &pdev->dev;
+       platform_set_drvdata(pdev, pl022);
+
+       pm_runtime_enable(&pdev->dev);
+       pm_runtime_set_autosuspend_delay(&pdev->dev, 100);
+       pm_runtime_use_autosuspend(&pdev->dev);
+
        if (ret) {
                pm_runtime_disable(dev);
                pm_runtime_set_suspended(dev);
@@ -2597,6 +2607,8 @@ static int starfive_of_pl022_remove(struct platform_device *pdev)
        size = resource_size(pdev->resource);
        release_mem_region(pdev->resource->start, size);
        tasklet_disable(&pl022->pump_transfers);
+       pm_runtime_disable(&pdev->dev);
+
        return 0;
 }