diff options
Diffstat (limited to 'drivers/gpu/drm/exynos/exynos_drm_fimd.c')
| -rw-r--r-- | drivers/gpu/drm/exynos/exynos_drm_fimd.c | 85 |
1 files changed, 85 insertions, 0 deletions
diff --git a/drivers/gpu/drm/exynos/exynos_drm_fimd.c b/drivers/gpu/drm/exynos/exynos_drm_fimd.c index 8b3c7a43447..26f66dd4a36 100644 --- a/drivers/gpu/drm/exynos/exynos_drm_fimd.c +++ b/drivers/gpu/drm/exynos/exynos_drm_fimd.c @@ -41,6 +41,8 @@ #define FIMD_DEFAULT_FRAMERATE 60 +#define WIDTH_LIMIT 16 + /* position control register for hardware window 0, 2 ~ 4.*/ #define VIDOSD_A(win) (VIDOSD_BASE + 0x00 + (win) * 16) #define VIDOSD_B(win) (VIDOSD_BASE + 0x04 + (win) * 16) @@ -173,6 +175,10 @@ struct fimd_context { struct exynos_drm_panel_info panel; struct fimd_driver_data *driver_data; struct notifier_block nb_ctrl; + unsigned int current_x; + unsigned int current_y; + unsigned int current_w; + unsigned int current_h; }; static const struct of_device_id fimd_driver_dt_match[] = { @@ -980,6 +986,76 @@ static void fimd_trigger(struct device *dev) writel(reg, timing_base + TRIGCON); } +static void fimd_adjust_partial_region(struct exynos_drm_manager *mgr, + unsigned int *x, unsigned int *y, unsigned int *w, + unsigned int *h) +{ + struct fimd_context *ctx = mgr->ctx; + unsigned int old_x; + unsigned int old_w; + + old_x = *x; + old_w = *w; + + /* + * if pos->x is bigger than 0, adjusts pos->x and pos->w roughly. + * + * ######################################### <- image + * | | | + * | before(x) before(w) + * after(x) after(w) + */ + if (*x > 0) { + *x = ALIGN(*x, WIDTH_LIMIT) - WIDTH_LIMIT; + *w += WIDTH_LIMIT; + } + + /* + * pos->w should be WIDTH_LIMIT if pos->w is 0, and also pos->x should + * be adjusted properly if pos->x is bigger than WIDTH_LIMIT. + */ + if (*w == 0) { + if (*x > WIDTH_LIMIT) + *x -= WIDTH_LIMIT; + *w = WIDTH_LIMIT; + } else + *w = ALIGN(*w, WIDTH_LIMIT); + + /* + * pos->x + pos->w should be smaller than horizontal size of display. + * If not so, page fault exception will be occurred. + */ + if (*x + *w > ctx->mode.hdisplay) + *w = ctx->mode.hdisplay - *x; + + ctx->current_x = *x; + ctx->current_y = *y; + ctx->current_w = *w; + ctx->current_h = *h; + + DRM_DEBUG_KMS("Adjusted x = %d -> %d, and w = %d -> %d\n", + old_x, *x, old_w, *w); +} + +static void fimd_change_resolution(struct exynos_drm_manager *mgr) +{ + struct fimd_context *ctx = mgr->ctx; + struct fimd_driver_data *driver_data = ctx->driver_data; + unsigned long val; + + /* setup horizontal and vertical display size. */ + val = VIDTCON2_LINEVAL(ctx->current_h - 1) | + VIDTCON2_HOZVAL(ctx->current_w - 1) | + VIDTCON2_LINEVAL_E(ctx->current_h - 1) | + VIDTCON2_HOZVAL_E(ctx->current_w - 1); + writel(val, ctx->regs + driver_data->timing_base + VIDTCON2); + + ctx->current_x = 0; + ctx->current_y = 0; + ctx->current_h = 0; + ctx->current_w = 0; +} + static int fimd_te_handler(struct exynos_drm_manager *mgr) { struct fimd_context *ctx = mgr->ctx; @@ -999,6 +1075,14 @@ static int fimd_te_handler(struct exynos_drm_manager *mgr) atomic_set(&ctx->win_updated, 0); spin_unlock_irqrestore(&ctx->win_updated_lock, flags); + if (ctx->current_w && ctx->current_h) { + exynos_drm_crtc_change_resolution(ctx->drm_dev, + mgr->pipe, ctx->current_x, + ctx->current_y, ctx->current_w, + ctx->current_h); + fimd_change_resolution(mgr); + } + fimd_trigger(ctx->dev); spin_lock_irqsave(&ctx->win_updated_lock, flags); @@ -1026,6 +1110,7 @@ static struct exynos_drm_manager_ops fimd_manager_ops = { .win_commit = fimd_win_commit, .win_disable = fimd_win_disable, .te_handler = fimd_te_handler, + .adjust_partial_region = fimd_adjust_partial_region, }; static struct exynos_drm_manager fimd_manager = { |