diff options
Diffstat (limited to 'drivers/gpu/drm/bridge/ite-it6505.c')
| -rw-r--r-- | drivers/gpu/drm/bridge/ite-it6505.c | 31 |
1 files changed, 19 insertions, 12 deletions
diff --git a/drivers/gpu/drm/bridge/ite-it6505.c b/drivers/gpu/drm/bridge/ite-it6505.c index 4b673c4792d7..dfe4351c9bdd 100644 --- a/drivers/gpu/drm/bridge/ite-it6505.c +++ b/drivers/gpu/drm/bridge/ite-it6505.c @@ -506,6 +506,9 @@ static int it6505_read(struct it6505 *it6505, unsigned int reg_addr) int err; struct device *dev = &it6505->client->dev; + if (!it6505->powered) + return -ENODEV; + err = regmap_read(it6505->regmap, reg_addr, &value); if (err < 0) { dev_err(dev, "read failed reg[0x%x] err: %d", reg_addr, err); @@ -521,6 +524,9 @@ static int it6505_write(struct it6505 *it6505, unsigned int reg_addr, int err; struct device *dev = &it6505->client->dev; + if (!it6505->powered) + return -ENODEV; + err = regmap_write(it6505->regmap, reg_addr, reg_val); if (err < 0) { @@ -538,6 +544,9 @@ static int it6505_set_bits(struct it6505 *it6505, unsigned int reg, int err; struct device *dev = &it6505->client->dev; + if (!it6505->powered) + return -ENODEV; + err = regmap_update_bits(it6505->regmap, reg, mask, value); if (err < 0) { dev_err(dev, "write reg[0x%x] = 0x%x mask = 0x%x failed err %d", @@ -554,7 +563,7 @@ static void it6505_debug_print(struct it6505 *it6505, unsigned int reg, struct device *dev = &it6505->client->dev; int val; - if (likely(!(__drm_debug & DRM_UT_DRIVER))) + if (!drm_debug_enabled(DRM_UT_DRIVER)) return; val = it6505_read(it6505, reg); @@ -682,7 +691,7 @@ static void it6505_calc_video_info(struct it6505 *it6505) DRM_DEV_DEBUG_DRIVER(dev, "hactive_start:%d, vactive_start:%d", hdes, vdes); - for (i = 0; i < 10; i++) { + for (i = 0; i < 3; i++) { it6505_set_bits(it6505, REG_DATA_CTRL0, ENABLE_PCLK_COUNTER, ENABLE_PCLK_COUNTER); usleep_range(10000, 15000); @@ -699,7 +708,7 @@ static void it6505_calc_video_info(struct it6505 *it6505) return; } - sum /= 10; + sum /= 3; pclk = 13500 * 2048 / sum; it6505->video_info.clock = pclk; it6505->video_info.hdisplay = hdew; @@ -2341,8 +2350,6 @@ static void it6505_irq_hpd(struct it6505 *it6505) if (!it6505_get_video_status(it6505)) it6505_video_reset(it6505); - - it6505_calc_video_info(it6505); } else { memset(it6505->dpcd, 0, sizeof(it6505->dpcd)); @@ -2559,13 +2566,12 @@ static int it6505_poweron(struct it6505 *it6505) usleep_range(10000, 20000); } + it6505->powered = true; it6505_reset_logic(it6505); it6505_int_mask_enable(it6505); it6505_init(it6505); it6505_lane_off(it6505); - it6505->powered = true; - return 0; } @@ -2954,6 +2960,9 @@ static void it6505_bridge_atomic_enable(struct drm_bridge *bridge, it6505_int_mask_enable(it6505); it6505_video_reset(it6505); + + it6505_drm_dp_link_set_power(&it6505->aux, &it6505->link, + DP_SET_POWER_D0); } static void it6505_bridge_atomic_disable(struct drm_bridge *bridge, @@ -2965,9 +2974,9 @@ static void it6505_bridge_atomic_disable(struct drm_bridge *bridge, DRM_DEV_DEBUG_DRIVER(dev, "start"); if (it6505->powered) { - it6505_video_disable(it6505); it6505_drm_dp_link_set_power(&it6505->aux, &it6505->link, DP_SET_POWER_D3); + it6505_video_disable(it6505); } } @@ -3044,7 +3053,7 @@ static int it6505_init_pdata(struct it6505 *it6505) return PTR_ERR(pdata->ovdd); } - pdata->gpiod_reset = devm_gpiod_get(dev, "reset", GPIOD_OUT_HIGH); + pdata->gpiod_reset = devm_gpiod_get(dev, "reset", GPIOD_OUT_LOW); if (IS_ERR(pdata->gpiod_reset)) { dev_err(dev, "gpiod_reset gpio not found"); return PTR_ERR(pdata->gpiod_reset); @@ -3316,7 +3325,7 @@ static int it6505_i2c_probe(struct i2c_client *client, return 0; } -static int it6505_i2c_remove(struct i2c_client *client) +static void it6505_i2c_remove(struct i2c_client *client) { struct it6505 *it6505 = i2c_get_clientdata(client); @@ -3324,8 +3333,6 @@ static int it6505_i2c_remove(struct i2c_client *client) drm_dp_aux_unregister(&it6505->aux); it6505_debugfs_remove(it6505); it6505_poweroff(it6505); - - return 0; } static const struct i2c_device_id it6505_id[] = { |