diff options
Diffstat (limited to 'drivers/gpu/drm/panel')
| -rw-r--r-- | drivers/gpu/drm/panel/panel-ilitek-ili9882t.c | 22 |
1 files changed, 21 insertions, 1 deletions
diff --git a/drivers/gpu/drm/panel/panel-ilitek-ili9882t.c b/drivers/gpu/drm/panel/panel-ilitek-ili9882t.c index 93a40c2f1483..267a5307041c 100644 --- a/drivers/gpu/drm/panel/panel-ilitek-ili9882t.c +++ b/drivers/gpu/drm/panel/panel-ilitek-ili9882t.c @@ -463,6 +463,24 @@ static int ili9882t_init_dcs_cmd(struct ili9882t *ili) return 0; } +static int ili9882t_switch_page(struct mipi_dsi_device *dsi, u8 page) +{ + int ret; + const struct panel_init_cmd cmd = _INIT_SWITCH_PAGE_CMD(page); + + ret = mipi_dsi_dcs_write(dsi, cmd.data[0], + cmd.len <= 1 ? NULL : + &cmd.data[1], + cmd.len - 1); + if (ret) { + dev_err(&dsi->dev, + "error switching panel controller page (%d)\n", ret); + return ret; + } + + return 0; +} + static int ili9882t_enter_sleep_mode(struct ili9882t *ili) { struct mipi_dsi_device *dsi = ili->dsi; @@ -484,8 +502,10 @@ static int ili9882t_enter_sleep_mode(struct ili9882t *ili) static int ili9882t_disable(struct drm_panel *panel) { struct ili9882t *ili = to_ili9882t(panel); + struct mipi_dsi_device *dsi = ili->dsi; int ret; + ili9882t_switch_page(dsi, 0x00); ret = ili9882t_enter_sleep_mode(ili); if (ret < 0) { dev_err(panel->dev, "failed to set panel off: %d\n", ret); @@ -546,7 +566,7 @@ static int ili9882t_prepare(struct drm_panel *panel) gpiod_set_value(ili->enable_gpio, 1); usleep_range(1000, 2000); gpiod_set_value(ili->enable_gpio, 0); - usleep_range(1000, 2000); + msleep(50); gpiod_set_value(ili->enable_gpio, 1); usleep_range(6000, 10000); |