The driver often sets only particular bits of configuration registers. Using separate function to such action simplifies the code.
Signed-off-by: Andrzej Hajda a.hajda@samsung.com --- drivers/gpu/drm/exynos/exynos5433_drm_decon.c | 69 ++++++++------------------- 1 file changed, 19 insertions(+), 50 deletions(-)
diff --git a/drivers/gpu/drm/exynos/exynos5433_drm_decon.c b/drivers/gpu/drm/exynos/exynos5433_drm_decon.c index 83e0939..722c11a 100644 --- a/drivers/gpu/drm/exynos/exynos5433_drm_decon.c +++ b/drivers/gpu/drm/exynos/exynos5433_drm_decon.c @@ -62,6 +62,13 @@ static const uint32_t decon_formats[] = { DRM_FORMAT_ARGB8888, };
+static inline void decon_set_bits(struct decon_context *ctx, u32 reg, u32 mask, + u32 val) +{ + val = (val & mask) | (readl(ctx->addr + reg) & ~mask); + writel(val, ctx->addr + reg); +} + static int decon_enable_vblank(struct exynos_drm_crtc *crtc) { struct decon_context *ctx = crtc->ctx; @@ -215,16 +222,8 @@ static void decon_win_set_pixfmt(struct decon_context *ctx, unsigned int win, static void decon_shadow_protect_win(struct decon_context *ctx, int win, bool protect) { - u32 val; - - val = readl(ctx->addr + DECON_SHADOWCON); - - if (protect) - val |= SHADOWCON_Wx_PROTECT(win); - else - val &= ~SHADOWCON_Wx_PROTECT(win); - - writel(val, ctx->addr + DECON_SHADOWCON); + decon_set_bits(ctx, DECON_SHADOWCON, SHADOWCON_Wx_PROTECT(win), + protect ? ~0 : 0); }
static void decon_atomic_begin(struct exynos_drm_crtc *crtc, @@ -278,14 +277,10 @@ static void decon_update_plane(struct exynos_drm_crtc *crtc, decon_win_set_pixfmt(ctx, win, state->fb);
/* window enable */ - val = readl(ctx->addr + DECON_WINCONx(win)); - val |= WINCONx_ENWIN_F; - writel(val, ctx->addr + DECON_WINCONx(win)); + decon_set_bits(ctx, DECON_WINCONx(win), WINCONx_ENWIN_F, ~0);
/* standalone update */ - val = readl(ctx->addr + DECON_UPDATE); - val |= STANDALONE_UPDATE_F; - writel(val, ctx->addr + DECON_UPDATE); + decon_set_bits(ctx, DECON_UPDATE, STANDALONE_UPDATE_F, ~0); }
static void decon_disable_plane(struct exynos_drm_crtc *crtc, @@ -293,7 +288,6 @@ static void decon_disable_plane(struct exynos_drm_crtc *crtc, { struct decon_context *ctx = crtc->ctx; unsigned int win = plane->zpos; - u32 val;
if (ctx->suspended) return; @@ -301,16 +295,12 @@ static void decon_disable_plane(struct exynos_drm_crtc *crtc, decon_shadow_protect_win(ctx, win, true);
/* window disable */ - val = readl(ctx->addr + DECON_WINCONx(win)); - val &= ~WINCONx_ENWIN_F; - writel(val, ctx->addr + DECON_WINCONx(win)); + decon_set_bits(ctx, DECON_WINCONx(win), WINCONx_ENWIN_F, 0);
decon_shadow_protect_win(ctx, win, false);
/* standalone update */ - val = readl(ctx->addr + DECON_UPDATE); - val |= STANDALONE_UPDATE_F; - writel(val, ctx->addr + DECON_UPDATE); + decon_set_bits(ctx, DECON_UPDATE, STANDALONE_UPDATE_F, ~0); }
static void decon_atomic_flush(struct exynos_drm_crtc *crtc, @@ -416,17 +406,12 @@ static void decon_disable(struct exynos_drm_crtc *crtc) void decon_te_irq_handler(struct exynos_drm_crtc *crtc) { struct decon_context *ctx = crtc->ctx; - u32 val;
if (!test_bit(BIT_CLKS_ENABLED, &ctx->enabled)) return;
- if (atomic_add_unless(&ctx->win_updated, -1, 0)) { - /* trigger */ - val = readl(ctx->addr + DECON_TRIGCON); - val |= TRIGCON_SWTRIGCMD; - writel(val, ctx->addr + DECON_TRIGCON); - } + if (atomic_add_unless(&ctx->win_updated, -1, 0)) + decon_set_bits(ctx, DECON_TRIGCON, TRIGCON_SWTRIGCMD, ~0);
drm_crtc_handle_vblank(&ctx->crtc->base); } @@ -435,7 +420,6 @@ static void decon_clear_channels(struct exynos_drm_crtc *crtc) { struct decon_context *ctx = crtc->ctx; int win, i, ret; - u32 val;
DRM_DEBUG_KMS("%s\n", __FILE__);
@@ -446,25 +430,10 @@ static void decon_clear_channels(struct exynos_drm_crtc *crtc) }
for (win = 0; win < WINDOWS_NR; win++) { - /* shadow update disable */ - val = readl(ctx->addr + DECON_SHADOWCON); - val |= SHADOWCON_Wx_PROTECT(win); - writel(val, ctx->addr + DECON_SHADOWCON); - - /* window disable */ - val = readl(ctx->addr + DECON_WINCONx(win)); - val &= ~WINCONx_ENWIN_F; - writel(val, ctx->addr + DECON_WINCONx(win)); - - /* shadow update enable */ - val = readl(ctx->addr + DECON_SHADOWCON); - val &= ~SHADOWCON_Wx_PROTECT(win); - writel(val, ctx->addr + DECON_SHADOWCON); - - /* standalone update */ - val = readl(ctx->addr + DECON_UPDATE); - val |= STANDALONE_UPDATE_F; - writel(val, ctx->addr + DECON_UPDATE); + decon_shadow_protect_win(ctx, win, true); + decon_set_bits(ctx, DECON_WINCONx(win), WINCONx_ENWIN_F, 0); + decon_shadow_protect_win(ctx, win, false); + decon_set_bits(ctx, DECON_UPDATE, STANDALONE_UPDATE_F, ~0); } /* TODO: wait for possible vsync */ msleep(50);