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path: root/drivers/video/bridge/tc358768.c
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Diffstat (limited to 'drivers/video/bridge/tc358768.c')
-rw-r--r--drivers/video/bridge/tc358768.c101
1 files changed, 55 insertions, 46 deletions
diff --git a/drivers/video/bridge/tc358768.c b/drivers/video/bridge/tc358768.c
index 19b6ca29d3e..358004f30f2 100644
--- a/drivers/video/bridge/tc358768.c
+++ b/drivers/video/bridge/tc358768.c
@@ -6,12 +6,14 @@
#include <clk.h>
#include <dm.h>
+#include <dm/ofnode_graph.h>
#include <i2c.h>
#include <log.h>
#include <mipi_display.h>
#include <mipi_dsi.h>
#include <backlight.h>
#include <panel.h>
+#include <video_bridge.h>
#include <linux/delay.h>
#include <linux/err.h>
#include <linux/kernel.h>
@@ -122,6 +124,10 @@
#define NANO 1000000000UL
#define PICO 1000000000000ULL
+static const char * const tc358768_supplies[] = {
+ "vddc-supply", "vddmipi-supply", "vddio-supply"
+};
+
struct tc358768_priv {
struct mipi_dsi_host host;
struct mipi_dsi_device device;
@@ -129,9 +135,7 @@ struct tc358768_priv {
struct udevice *panel;
struct display_timing timing;
- struct udevice *vddc;
- struct udevice *vddmipi;
- struct udevice *vddio;
+ struct udevice *supplies[ARRAY_SIZE(tc358768_supplies)];
struct clk *refclk;
@@ -265,25 +269,27 @@ static void tc358768_sw_reset(struct udevice *dev)
tc358768_write(dev, TC358768_SYSCTL, 0);
}
-static void tc358768_hw_enable(struct tc358768_priv *priv)
+static void tc358768_hw_enable(struct udevice *dev)
{
+ struct tc358768_priv *priv = dev_get_priv(dev);
+ struct video_bridge_priv *uc_priv = dev_get_uclass_priv(dev);
int ret;
ret = clk_prepare_enable(priv->refclk);
if (ret)
log_debug("%s: error enabling refclk (%d)\n", __func__, ret);
- ret = regulator_set_enable_if_allowed(priv->vddc, true);
+ ret = regulator_set_enable_if_allowed(priv->supplies[0], true);
if (ret)
log_debug("%s: error enabling vddc (%d)\n", __func__, ret);
- ret = regulator_set_enable_if_allowed(priv->vddmipi, true);
+ ret = regulator_set_enable_if_allowed(priv->supplies[1], true);
if (ret)
log_debug("%s: error enabling vddmipi (%d)\n", __func__, ret);
mdelay(10);
- ret = regulator_set_enable_if_allowed(priv->vddio, true);
+ ret = regulator_set_enable_if_allowed(priv->supplies[2], true);
if (ret)
log_debug("%s: error enabling vddio (%d)\n", __func__, ret);
@@ -293,7 +299,7 @@ static void tc358768_hw_enable(struct tc358768_priv *priv)
* The RESX is active low (GPIO_ACTIVE_LOW).
* DEASSERT (value = 0) the reset_gpio to enable the chip
*/
- ret = dm_gpio_set_value(&priv->reset_gpio, 0);
+ ret = dm_gpio_set_value(&uc_priv->reset, 0);
if (ret)
log_debug("%s: error changing reset-gpio (%d)\n", __func__, ret);
@@ -477,7 +483,7 @@ static int tc358768_attach(struct udevice *dev)
device->mode_flags &= ~MIPI_DSI_CLOCK_NON_CONTINUOUS;
}
- tc358768_hw_enable(priv);
+ tc358768_hw_enable(dev);
tc358768_sw_reset(dev);
tc358768_setup_pll(dev);
@@ -874,12 +880,33 @@ static int tc358768_panel_timings(struct udevice *dev,
return 0;
}
+static int tc358768_get_panel(struct udevice *dev)
+{
+ struct tc358768_priv *priv = dev_get_priv(dev);
+ int i, ret;
+
+ u32 num = ofnode_graph_get_port_count(dev_ofnode(dev));
+
+ for (i = 0; i < num; i++) {
+ ofnode remote = ofnode_graph_get_remote_node(dev_ofnode(dev), i, -1);
+
+ ret = uclass_get_device_by_ofnode(UCLASS_PANEL, remote,
+ &priv->panel);
+ if (!ret)
+ return 0;
+ }
+
+ /* If this point is reached, no panels were found */
+ return -ENODEV;
+}
+
static int tc358768_setup(struct udevice *dev)
{
struct tc358768_priv *priv = dev_get_priv(dev);
+ struct video_bridge_priv *uc_priv = dev_get_uclass_priv(dev);
struct mipi_dsi_device *device = &priv->device;
struct mipi_dsi_panel_plat *mipi_plat;
- int ret;
+ int i, ret;
/* The bridge uses 16 bit registers */
ret = i2c_set_chip_offset_len(dev, 2);
@@ -889,11 +916,10 @@ static int tc358768_setup(struct udevice *dev)
return ret;
}
- ret = uclass_get_device_by_phandle(UCLASS_PANEL, dev,
- "panel", &priv->panel);
+ ret = tc358768_get_panel(dev);
if (ret) {
- log_debug("%s: Cannot get panel: ret=%d\n", __func__, ret);
- return log_ret(ret);
+ log_debug("%s: panel not found, ret %d\n", __func__, ret);
+ return ret;
}
panel_get_display_timing(priv->panel, &priv->timing);
@@ -913,44 +939,26 @@ static int tc358768_setup(struct udevice *dev)
priv->dsi_lanes = device->lanes;
/* get regulators */
- ret = device_get_supply_regulator(dev, "vddc-supply", &priv->vddc);
- if (ret) {
- log_debug("%s: vddc regulator error: %d\n", __func__, ret);
- if (ret != -ENOENT)
- return log_ret(ret);
- }
-
- ret = device_get_supply_regulator(dev, "vddmipi-supply", &priv->vddmipi);
- if (ret) {
- log_debug("%s: vddmipi regulator error: %d\n", __func__, ret);
- if (ret != -ENOENT)
- return log_ret(ret);
- }
-
- ret = device_get_supply_regulator(dev, "vddio-supply", &priv->vddio);
- if (ret) {
- log_debug("%s: vddio regulator error: %d\n", __func__, ret);
- if (ret != -ENOENT)
- return log_ret(ret);
+ for (i = 0; i < ARRAY_SIZE(tc358768_supplies); i++) {
+ ret = device_get_supply_regulator(dev, tc358768_supplies[i],
+ &priv->supplies[i]);
+ if (ret) {
+ log_debug("%s: cannot get %s %d\n", __func__,
+ tc358768_supplies[i], ret);
+ if (ret != -ENOENT)
+ return log_ret(ret);
+ }
}
/* get clk */
- priv->refclk = devm_clk_get(dev, "refclk");
+ priv->refclk = devm_clk_get(dev, NULL);
if (IS_ERR(priv->refclk)) {
log_debug("%s: Could not get refclk: %ld\n",
__func__, PTR_ERR(priv->refclk));
return PTR_ERR(priv->refclk);
}
- /* get gpios */
- ret = gpio_request_by_name(dev, "reset-gpios", 0,
- &priv->reset_gpio, GPIOD_IS_OUT);
- if (ret) {
- log_debug("%s: Could not decode reset-gpios (%d)\n", __func__, ret);
- return ret;
- }
-
- dm_gpio_set_value(&priv->reset_gpio, 1);
+ dm_gpio_set_value(&uc_priv->reset, 1);
return 0;
}
@@ -963,8 +971,8 @@ static int tc358768_probe(struct udevice *dev)
return tc358768_setup(dev);
}
-struct panel_ops tc358768_ops = {
- .enable_backlight = tc358768_attach,
+static const struct video_bridge_ops tc358768_ops = {
+ .attach = tc358768_attach,
.set_backlight = tc358768_set_backlight,
.get_display_timing = tc358768_panel_timings,
};
@@ -977,9 +985,10 @@ static const struct udevice_id tc358768_ids[] = {
U_BOOT_DRIVER(tc358768) = {
.name = "tc358768",
- .id = UCLASS_PANEL,
+ .id = UCLASS_VIDEO_BRIDGE,
.of_match = tc358768_ids,
.ops = &tc358768_ops,
+ .bind = dm_scan_fdt_dev,
.probe = tc358768_probe,
.priv_auto = sizeof(struct tc358768_priv),
};
generated by cgit v1.2.3 (git 2.0.4) at 2025-08-06 02:44:26 +0000