[PATCH 14/15] drivers: net: davinci_mdio: enable pm runtime auto for ti cpsw-mdio

Grygorii Strashko
2016-06-15T11:58:08Z

Use "ti,cpsw-mdio" to enable PM runtime auto-suspend on supported
platforms, where MDIO is implemented as part of TI CPSW.

Signed-off-by: Grygorii Strashko <grygorii.strashko@ti.com>
---
drivers/net/ethernet/ti/davinci_mdio.c | 45 +++++++++++++++++++++++++---------
1 file changed, 34 insertions(+), 11 deletions(-)

diff --git a/drivers/net/ethernet/ti/davinci_mdio.c b/drivers/net/ethernet/ti/davinci_mdio.c
index ce3ec42..d1fb734 100644
--- a/drivers/net/ethernet/ti/davinci_mdio.c
+++ b/drivers/net/ethernet/ti/davinci_mdio.c
@@ -53,6 +53,10 @@

#define DEF_OUT_FREQ 2200000 /* 2.2 MHz */

+struct davinci_mdio_of_param {
+ int autosuspend_delay_ms;
+};
+
struct davinci_mdio_regs {
u32 version;
u32 control;
@@ -332,6 +336,19 @@ static int davinci_mdio_probe_dt(struct mdio_platform_data *data,
}
#endif

+#if IS_ENABLED(CONFIG_OF)
+static const struct davinci_mdio_of_param of_cpsw_mdio_data = {
+ .autosuspend_delay_ms = 100,
+};
+
+static const struct of_device_id davinci_mdio_of_mtable[] = {
+ { .compatible = "ti,davinci_mdio", },
+ { .compatible = "ti,cpsw-mdio", .data = &of_cpsw_mdio_data},
+ { /* sentinel */ },
+};
+MODULE_DEVICE_TABLE(of, davinci_mdio_of_mtable);
+#endif
+
static int davinci_mdio_probe(struct platform_device *pdev)
{
struct mdio_platform_data *pdata = dev_get_platdata(&pdev->dev);
@@ -340,6 +357,7 @@ static int davinci_mdio_probe(struct platform_device *pdev)
struct resource *res;
struct phy_device *phy;
int ret, addr;
+ int autosuspend_delay_ms = -1;

data = devm_kzalloc(dev, sizeof(*data), GFP_KERNEL);
if (!data)
@@ -352,9 +370,22 @@ static int davinci_mdio_probe(struct platform_device *pdev)
}

if (dev->of_node) {
- if (davinci_mdio_probe_dt(&data->pdata, pdev))
- data->pdata = default_pdata;
+ const struct of_device_id *of_id;
+
+ ret = davinci_mdio_probe_dt(data, pdev);
+ if (ret)
+ return ret;
snprintf(data->bus->id, MII_BUS_ID_SIZE, "%s", pdev->name);
+
+ of_id = of_match_device(davinci_mdio_of_mtable, &pdev->dev);
+ if (of_id) {
+ const struct davinci_mdio_of_param *of_mdio_data;
+
+ of_mdio_data = of_id->data;
+ if (of_mdio_data)
+ autosuspend_delay_ms =
+ of_mdio_data->autosuspend_delay_ms;
+ }
} else {
data->pdata = pdata ? (*pdata) : default_pdata;
snprintf(data->bus->id, MII_BUS_ID_SIZE, "%s-%x",
@@ -384,7 +415,7 @@ static int davinci_mdio_probe(struct platform_device *pdev)

davinci_mdio_init_clk(data);

- pm_runtime_set_autosuspend_delay(&pdev->dev, -1);
+ pm_runtime_set_autosuspend_delay(&pdev->dev, autosuspend_delay_ms);
pm_runtime_use_autosuspend(&pdev->dev);
pm_runtime_enable(&pdev->dev);

@@ -495,14 +526,6 @@ static const struct dev_pm_ops davinci_mdio_pm_ops = {
SET_LATE_SYSTEM_SLEEP_PM_OPS(davinci_mdio_suspend, davinci_mdio_resume)
};

-#if IS_ENABLED(CONFIG_OF)
-static const struct of_device_id davinci_mdio_of_mtable[] = {
- { .compatible = "ti,davinci_mdio", },
- { /* sentinel */ },
-};
-MODULE_DEVICE_TABLE(of, davinci_mdio_of_mtable);
-#endif
-
static struct platform_driver davinci_mdio_driver = {
.driver = {
.name = "davinci_mdio",
--
2.8.4