diff options
Diffstat (limited to 'drivers/gpu/drm/panel/panel-raspberrypi-touchscreen.c')
| -rw-r--r-- | drivers/gpu/drm/panel/panel-raspberrypi-touchscreen.c | 37 |
1 files changed, 20 insertions, 17 deletions
diff --git a/drivers/gpu/drm/panel/panel-raspberrypi-touchscreen.c b/drivers/gpu/drm/panel/panel-raspberrypi-touchscreen.c index 46029c5610c8..dc4bb8ad9131 100644 --- a/drivers/gpu/drm/panel/panel-raspberrypi-touchscreen.c +++ b/drivers/gpu/drm/panel/panel-raspberrypi-touchscreen.c @@ -43,11 +43,10 @@ #include <linux/delay.h> #include <linux/err.h> -#include <linux/fb.h> #include <linux/i2c.h> +#include <linux/media-bus-format.h> #include <linux/module.h> #include <linux/of.h> -#include <linux/of_device.h> #include <linux/of_graph.h> #include <linux/pm.h> @@ -229,7 +228,7 @@ static void rpi_touchscreen_i2c_write(struct rpi_touchscreen *ts, ret = i2c_smbus_write_byte_data(ts->i2c, reg, val); if (ret) - dev_err(&ts->dsi->dev, "I2C write failed: %d\n", ret); + dev_err(&ts->i2c->dev, "I2C write failed: %d\n", ret); } static int rpi_touchscreen_write(struct rpi_touchscreen *ts, u16 reg, u32 val) @@ -265,7 +264,7 @@ static int rpi_touchscreen_noop(struct drm_panel *panel) return 0; } -static int rpi_touchscreen_enable(struct drm_panel *panel) +static int rpi_touchscreen_prepare(struct drm_panel *panel) { struct rpi_touchscreen *ts = panel_to_ts(panel); int i; @@ -295,6 +294,13 @@ static int rpi_touchscreen_enable(struct drm_panel *panel) rpi_touchscreen_write(ts, DSI_STARTDSI, 0x01); msleep(100); + return 0; +} + +static int rpi_touchscreen_enable(struct drm_panel *panel) +{ + struct rpi_touchscreen *ts = panel_to_ts(panel); + /* Turn on the backlight. */ rpi_touchscreen_i2c_write(ts, REG_PWM, 255); @@ -349,13 +355,12 @@ static int rpi_touchscreen_get_modes(struct drm_panel *panel, static const struct drm_panel_funcs rpi_touchscreen_funcs = { .disable = rpi_touchscreen_disable, .unprepare = rpi_touchscreen_noop, - .prepare = rpi_touchscreen_noop, + .prepare = rpi_touchscreen_prepare, .enable = rpi_touchscreen_enable, .get_modes = rpi_touchscreen_get_modes, }; -static int rpi_touchscreen_probe(struct i2c_client *i2c, - const struct i2c_device_id *id) +static int rpi_touchscreen_probe(struct i2c_client *i2c) { struct device *dev = &i2c->dev; struct rpi_touchscreen *ts; @@ -368,9 +373,12 @@ static int rpi_touchscreen_probe(struct i2c_client *i2c, .node = NULL, }; - ts = devm_kzalloc(dev, sizeof(*ts), GFP_KERNEL); - if (!ts) - return -ENOMEM; + ts = devm_drm_panel_alloc(dev, __typeof(*ts), base, + &rpi_touchscreen_funcs, + DRM_MODE_CONNECTOR_DSI); + + if (IS_ERR(ts)) + return PTR_ERR(ts); i2c_set_clientdata(i2c, ts); @@ -395,7 +403,7 @@ static int rpi_touchscreen_probe(struct i2c_client *i2c, rpi_touchscreen_i2c_write(ts, REG_POWERON, 0); /* Look up the DSI host. It needs to probe before we do. */ - endpoint = of_graph_get_next_endpoint(dev->of_node, NULL); + endpoint = of_graph_get_endpoint_by_regs(dev->of_node, 0, -1); if (!endpoint) return -ENODEV; @@ -423,9 +431,6 @@ static int rpi_touchscreen_probe(struct i2c_client *i2c, return PTR_ERR(ts->dsi); } - drm_panel_init(&ts->base, dev, &rpi_touchscreen_funcs, - DRM_MODE_CONNECTOR_DSI); - /* This appears last, as it's what will unblock the DSI host * driver's component bind function. */ @@ -438,7 +443,7 @@ error: return -ENODEV; } -static int rpi_touchscreen_remove(struct i2c_client *i2c) +static void rpi_touchscreen_remove(struct i2c_client *i2c) { struct rpi_touchscreen *ts = i2c_get_clientdata(i2c); @@ -447,8 +452,6 @@ static int rpi_touchscreen_remove(struct i2c_client *i2c) drm_panel_remove(&ts->base); mipi_dsi_device_unregister(ts->dsi); - - return 0; } static int rpi_touchscreen_dsi_probe(struct mipi_dsi_device *dsi) |