diff options
Diffstat (limited to 'drivers/gpu/drm')
| -rw-r--r-- | drivers/gpu/drm/exynos/exynos_drm_dsi.c | 18 |
1 files changed, 14 insertions, 4 deletions
diff --git a/drivers/gpu/drm/exynos/exynos_drm_dsi.c b/drivers/gpu/drm/exynos/exynos_drm_dsi.c index 0fe32b8ee09b..c1999ad4cdcb 100644 --- a/drivers/gpu/drm/exynos/exynos_drm_dsi.c +++ b/drivers/gpu/drm/exynos/exynos_drm_dsi.c @@ -260,6 +260,7 @@ struct exynos_dsi_transfer { #define DSIM_STATE_ENABLED BIT(0) #define DSIM_STATE_INITIALIZED BIT(1) #define DSIM_STATE_CMD_LPM BIT(2) +#define DSIM_STATE_VIDOUT_AVAILABLE BIT(3) struct exynos_dsi_driver_data { unsigned int plltmr_reg; @@ -1119,7 +1120,7 @@ static irqreturn_t exynos_dsi_te_irq_handler(int irq, void *dev_id) struct exynos_dsi *dsi = (struct exynos_dsi *)dev_id; struct drm_encoder *encoder = dsi->display.encoder; - if (dsi->state & DSIM_STATE_ENABLED) + if (dsi->state & DSIM_STATE_VIDOUT_AVAILABLE) exynos_drm_crtc_te_handler(encoder->crtc); return IRQ_HANDLED; @@ -1252,6 +1253,9 @@ static ssize_t exynos_dsi_host_transfer(struct mipi_dsi_host *host, struct exynos_dsi_transfer xfer; int ret; + if (!(dsi->state & DSIM_STATE_ENABLED)) + return -EINVAL; + if (!(dsi->state & DSIM_STATE_INITIALIZED)) { ret = exynos_dsi_init(dsi); if (ret) @@ -1370,8 +1374,11 @@ static int exynos_dsi_enable(struct exynos_dsi *dsi) if (ret < 0) return ret; + dsi->state |= DSIM_STATE_ENABLED; + ret = drm_panel_prepare(dsi->panel); if (ret < 0) { + dsi->state &= ~DSIM_STATE_ENABLED; exynos_dsi_poweroff(dsi); return ret; } @@ -1379,8 +1386,6 @@ static int exynos_dsi_enable(struct exynos_dsi *dsi) exynos_dsi_set_display_mode(dsi); exynos_dsi_set_display_enable(dsi, true); - dsi->state |= DSIM_STATE_ENABLED; - ret = drm_panel_enable(dsi->panel); if (ret < 0) { dsi->state &= ~DSIM_STATE_ENABLED; @@ -1390,6 +1395,8 @@ static int exynos_dsi_enable(struct exynos_dsi *dsi) return ret; } + dsi->state |= DSIM_STATE_VIDOUT_AVAILABLE; + return 0; } @@ -1398,12 +1405,15 @@ static void exynos_dsi_disable(struct exynos_dsi *dsi) if (!(dsi->state & DSIM_STATE_ENABLED)) return; + dsi->state &= ~DSIM_STATE_VIDOUT_AVAILABLE; + drm_panel_disable(dsi->panel); exynos_dsi_set_display_enable(dsi, false); drm_panel_unprepare(dsi->panel); - exynos_dsi_poweroff(dsi); dsi->state &= ~DSIM_STATE_ENABLED; + + exynos_dsi_poweroff(dsi); } static void exynos_dsi_dpms(struct exynos_drm_display *display, int mode) |