video: bridge: ssd2825: add power supplies

Convert enable GPIO into a set of supplies according to
datasheet.

Signed-off-by: Svyatoslav Ryhel <clamor95@gmail.com>

diff --git a/drivers/video/bridge/ssd2825.c b/drivers/video/bridge/ssd2825.c
index b8653cc..2a49b89 100644 (file)
--- a/drivers/video/bridge/ssd2825.c
+++ b/drivers/video/bridge/ssd2825.c
@@ -13,6 +13,7 @@
 #include <backlight.h>
 #include <video_bridge.h>
 #include <panel.h>
+#include <power/regulator.h>
 #include <spi.h>
 #include <linux/delay.h>
 #include <linux/err.h>
@@ -108,6 +109,10 @@
 #define SSD2825_LP_MIN_CLK             5000 /* KHz */
 #define SSD2825_REF_MIN_CLK            2000 /* KHz */
 
+static const char * const ssd2825_supplies[] = {
+       "dvdd-supply", "avdd-supply", "vddio-supply"
+};
+
 struct ssd2825_bridge_priv {
        struct mipi_dsi_host host;
        struct mipi_dsi_device device;
@@ -115,6 +120,8 @@ struct ssd2825_bridge_priv {
        struct udevice *panel;
        struct display_timing timing;
 
+       struct udevice *supplies[ARRAY_SIZE(ssd2825_supplies)];
+
        struct gpio_desc power_gpio;
 
        struct clk *tx_clk;
@@ -444,7 +451,7 @@ static int ssd2825_bridge_hw_init(struct udevice *dev)
 {
        struct ssd2825_bridge_priv *priv = dev_get_priv(dev);
        struct video_bridge_priv *uc_priv = dev_get_uclass_priv(dev);
-       int ret;
+       int i, ret;
 
        ret = clk_prepare_enable(priv->tx_clk);
        if (ret) {
@@ -453,11 +460,14 @@ static int ssd2825_bridge_hw_init(struct udevice *dev)
                return ret;
        }
 
-       ret = dm_gpio_set_value(&priv->power_gpio, 1);
-       if (ret) {
-               log_debug("%s: error changing power-gpios (%d)\n",
-                         __func__, ret);
-               return ret;
+       /* enable supplies */
+       for (i = 0; i < ARRAY_SIZE(ssd2825_supplies); i++) {
+               ret = regulator_set_enable_if_allowed(priv->supplies[i], 1);
+               if (ret) {
+                       log_debug("%s: cannot enable %s %d\n", __func__,
+                                 ssd2825_supplies[i], ret);
+                       return ret;
+               }
        }
        mdelay(10);
 
@@ -506,7 +516,7 @@ static int ssd2825_bridge_probe(struct udevice *dev)
        struct spi_slave *slave = dev_get_parent_priv(dev);
        struct mipi_dsi_device *device = &priv->device;
        struct mipi_dsi_panel_plat *mipi_plat;
-       int ret;
+       int i, ret;
 
        ret = spi_claim_bus(slave);
        if (ret) {
@@ -533,12 +543,16 @@ static int ssd2825_bridge_probe(struct udevice *dev)
        device->format = mipi_plat->format;
        device->mode_flags = mipi_plat->mode_flags;
 
-       /* get panel gpios */
-       ret = gpio_request_by_name(dev, "power-gpios", 0,
-                                  &priv->power_gpio, GPIOD_IS_OUT);
-       if (ret) {
-               log_err("could not decode power-gpios (%d)\n", ret);
-               return ret;
+       /* get supplies */
+       for (i = 0; i < ARRAY_SIZE(ssd2825_supplies); i++) {
+               ret = device_get_supply_regulator(dev, ssd2825_supplies[i],
+                                                 &priv->supplies[i]);
+               if (ret) {
+                       log_debug("%s: cannot get %s %d\n", __func__,
+                                 ssd2825_supplies[i], ret);
+                       if (ret != -ENOENT)
+                               return log_ret(ret);
+               }
        }
 
        /* get clk */