[PATCH 2/2] drm/exynos: implement atomic_{begin/flush} of FIMD and DECON
Inki Dae
inki.dae at samsung.com
Thu Aug 27 01:00:41 PDT 2015
On 2015년 08월 20일 11:33, Hyungwon Hwang wrote:
> Each CRTC's atomic_{begin/flush} must stop/start the update of shadow
> registers to active register in the functions. This patch achieves these
> purpose by moving the setting of protection bits to those functions from
> {fimd/decon}_update_plane.
Hyungwon,
Gustavo already posted atomic_begin/flush support. However, he didn't
consider decon drivers.
Can you post only atomic_begin/flush support for decon drivers?
Thanks,
Inki Dae
>
> Signed-off-by: Hyungwon Hwang <human.hwang at samsung.com>
> ---
> drivers/gpu/drm/exynos/exynos5433_drm_decon.c | 47 +++++++++++++++++-------
> drivers/gpu/drm/exynos/exynos7_drm_decon.c | 47 ++++++++++++++++--------
> drivers/gpu/drm/exynos/exynos_drm_fimd.c | 51 ++++++++++++++++++---------
> 3 files changed, 103 insertions(+), 42 deletions(-)
>
> diff --git a/drivers/gpu/drm/exynos/exynos5433_drm_decon.c b/drivers/gpu/drm/exynos/exynos5433_drm_decon.c
> index 484e312..fef0333 100644
> --- a/drivers/gpu/drm/exynos/exynos5433_drm_decon.c
> +++ b/drivers/gpu/drm/exynos/exynos5433_drm_decon.c
> @@ -31,6 +31,7 @@ struct decon_context {
> struct drm_device *drm_dev;
> struct exynos_drm_crtc *crtc;
> struct exynos_drm_plane planes[WINDOWS_NR];
> + unsigned int updated_plane;
> void __iomem *addr;
> struct clk *clks[6];
> unsigned int default_win;
> @@ -204,17 +205,17 @@ static void decon_win_set_pixfmt(struct decon_context *ctx, unsigned int win,
> writel(val, ctx->addr + DECON_WINCONx(win));
> }
>
> -static void decon_shadow_protect_win(struct decon_context *ctx, int win,
> - bool protect)
> +static void decon_shadow_protect_win(struct decon_context *ctx,
> + unsigned int win_bits, bool protect)
> {
> u32 val;
>
> val = readl(ctx->addr + DECON_SHADOWCON);
>
> if (protect)
> - val |= SHADOWCON_Wx_PROTECT(win);
> + val |= win_bits;
> else
> - val &= ~SHADOWCON_Wx_PROTECT(win);
> + val &= ~win_bits;
>
> writel(val, ctx->addr + DECON_SHADOWCON);
> }
> @@ -232,8 +233,6 @@ static void decon_update_plane(struct exynos_drm_crtc *crtc,
> if (ctx->suspended)
> return;
>
> - decon_shadow_protect_win(ctx, win, true);
> -
> val = COORDINATE_X(plane->crtc_x) | COORDINATE_Y(plane->crtc_y);
> writel(val, ctx->addr + DECON_VIDOSDxA(win));
>
> @@ -265,15 +264,12 @@ static void decon_update_plane(struct exynos_drm_crtc *crtc,
> val |= WINCONx_ENWIN_F;
> writel(val, ctx->addr + DECON_WINCONx(win));
>
> - 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);
>
> - if (ctx->i80_if)
> - atomic_set(&ctx->win_updated, 1);
> + ctx->updated_plane |= SHADOWCON_Wx_PROTECT(win);
> }
>
> static void decon_disable_plane(struct exynos_drm_crtc *crtc,
> @@ -286,14 +282,14 @@ static void decon_disable_plane(struct exynos_drm_crtc *crtc,
> if (ctx->suspended)
> return;
>
> - decon_shadow_protect_win(ctx, win, true);
> + decon_shadow_protect_win(ctx, SHADOWCON_Wx_PROTECT(win), true);
>
> /* window disable */
> val = readl(ctx->addr + DECON_WINCONx(win));
> val &= ~WINCONx_ENWIN_F;
> writel(val, ctx->addr + DECON_WINCONx(win));
>
> - decon_shadow_protect_win(ctx, win, false);
> + decon_shadow_protect_win(ctx, SHADOWCON_Wx_PROTECT(win), false);
>
> /* standalone update */
> val = readl(ctx->addr + DECON_UPDATE);
> @@ -405,6 +401,31 @@ void decon_te_irq_handler(struct exynos_drm_crtc *crtc)
> drm_crtc_handle_vblank(&ctx->crtc->base);
> }
>
> +static void decon_begin(struct exynos_drm_crtc *crtc)
> +{
> + struct decon_context *ctx = crtc->ctx;
> + int i;
> + unsigned int val = 0;
> +
> + for (i = 0; i < WINDOWS_NR; i++)
> + val |= SHADOWCON_Wx_PROTECT(i);
> +
> + /* protect windows */
> + decon_shadow_protect_win(ctx, val, true);
> +}
> +
> +static void decon_flush(struct exynos_drm_crtc *crtc)
> +{
> + struct decon_context *ctx = crtc->ctx;
> +
> + if (ctx->updated_plane) {
> + decon_shadow_protect_win(ctx, ctx->updated_plane, false);
> +
> + if (ctx->i80_if)
> + atomic_set(&ctx->win_updated, 1);
> + }
> +}
> +
> static void decon_clear_channels(struct exynos_drm_crtc *crtc)
> {
> struct decon_context *ctx = crtc->ctx;
> @@ -458,6 +479,8 @@ static struct exynos_drm_crtc_ops decon_crtc_ops = {
> .update_plane = decon_update_plane,
> .disable_plane = decon_disable_plane,
> .te_handler = decon_te_irq_handler,
> + .atomic_begin = decon_begin,
> + .atomic_flush = decon_flush,
> };
>
> static int decon_bind(struct device *dev, struct device *master, void *data)
> diff --git a/drivers/gpu/drm/exynos/exynos7_drm_decon.c b/drivers/gpu/drm/exynos/exynos7_drm_decon.c
> index 0792654..c81de86 100644
> --- a/drivers/gpu/drm/exynos/exynos7_drm_decon.c
> +++ b/drivers/gpu/drm/exynos/exynos7_drm_decon.c
> @@ -47,6 +47,7 @@ struct decon_context {
> struct drm_device *drm_dev;
> struct exynos_drm_crtc *crtc;
> struct exynos_drm_plane planes[WINDOWS_NR];
> + unsigned int updated_plane;
> struct clk *pclk;
> struct clk *aclk;
> struct clk *eclk;
> @@ -369,17 +370,15 @@ static void decon_win_set_colkey(struct decon_context *ctx, unsigned int win)
> * @protect: 1 to protect (disable updates)
> */
> static void decon_shadow_protect_win(struct decon_context *ctx,
> - unsigned int win, bool protect)
> + unsigned int win_bits, bool protect)
> {
> - u32 bits, val;
> -
> - bits = SHADOWCON_WINx_PROTECT(win);
> + u32 val;
>
> val = readl(ctx->regs + SHADOWCON);
> if (protect)
> - val |= bits;
> + val |= win_bits;
> else
> - val &= ~bits;
> + val &= ~win_bits;
> writel(val, ctx->regs + SHADOWCON);
> }
>
> @@ -410,9 +409,6 @@ static void decon_update_plane(struct exynos_drm_crtc *crtc,
> * is set.
> */
>
> - /* protect windows */
> - decon_shadow_protect_win(ctx, win, true);
> -
> /* buffer start address */
> val = (unsigned long)plane->dma_addr[0];
> writel(val, ctx->regs + VIDW_BUF_START(win));
> @@ -484,12 +480,11 @@ static void decon_update_plane(struct exynos_drm_crtc *crtc,
> val |= WINCONx_ENWIN;
> writel(val, ctx->regs + WINCON(win));
>
> - /* Enable DMA channel and unprotect windows */
> - decon_shadow_protect_win(ctx, win, false);
> -
> val = readl(ctx->regs + DECON_UPDATE);
> val |= DECON_UPDATE_STANDALONE_F;
> writel(val, ctx->regs + DECON_UPDATE);
> +
> + ctx->updated_plane |= SHADOWCON_WINx_PROTECT(win);
> }
>
> static void decon_disable_plane(struct exynos_drm_crtc *crtc,
> @@ -503,7 +498,7 @@ static void decon_disable_plane(struct exynos_drm_crtc *crtc,
> return;
>
> /* protect windows */
> - decon_shadow_protect_win(ctx, win, true);
> + decon_shadow_protect_win(ctx, SHADOWCON_WINx_PROTECT(win), true);
>
> /* wincon */
> val = readl(ctx->regs + WINCON(win));
> @@ -511,7 +506,7 @@ static void decon_disable_plane(struct exynos_drm_crtc *crtc,
> writel(val, ctx->regs + WINCON(win));
>
> /* unprotect windows */
> - decon_shadow_protect_win(ctx, win, false);
> + decon_shadow_protect_win(ctx, SHADOWCON_WINx_PROTECT(win), false);
>
> val = readl(ctx->regs + DECON_UPDATE);
> val |= DECON_UPDATE_STANDALONE_F;
> @@ -606,6 +601,28 @@ static void decon_disable(struct exynos_drm_crtc *crtc)
> ctx->suspended = true;
> }
>
> +static void decon_begin(struct exynos_drm_crtc *crtc)
> +{
> + struct decon_context *ctx = crtc->ctx;
> + int i;
> + unsigned int val = 0;
> +
> + for (i = 0; i < WINDOWS_NR; i++)
> + val |= SHADOWCON_WINx_PROTECT(i);
> +
> + /* protect windows */
> + decon_shadow_protect_win(ctx, val, true);
> +}
> +
> +static void decon_flush(struct exynos_drm_crtc *crtc)
> +{
> + struct decon_context *ctx = crtc->ctx;
> +
> + if (ctx->updated_plane)
> + decon_shadow_protect_win(ctx, ctx->updated_plane, false);
> +}
> +
> +
> static const struct exynos_drm_crtc_ops decon_crtc_ops = {
> .enable = decon_enable,
> .disable = decon_disable,
> @@ -616,6 +633,8 @@ static const struct exynos_drm_crtc_ops decon_crtc_ops = {
> .wait_for_vblank = decon_wait_for_vblank,
> .update_plane = decon_update_plane,
> .disable_plane = decon_disable_plane,
> + .atomic_begin = decon_begin,
> + .atomic_flush = decon_flush,
> };
>
>
> diff --git a/drivers/gpu/drm/exynos/exynos_drm_fimd.c b/drivers/gpu/drm/exynos/exynos_drm_fimd.c
> index 5def6bc..0b41bb2 100644
> --- a/drivers/gpu/drm/exynos/exynos_drm_fimd.c
> +++ b/drivers/gpu/drm/exynos/exynos_drm_fimd.c
> @@ -149,6 +149,7 @@ struct fimd_context {
> struct drm_device *drm_dev;
> struct exynos_drm_crtc *crtc;
> struct exynos_drm_plane planes[WINDOWS_NR];
> + unsigned int updated_plane;
> struct clk *bus_clk;
> struct clk *lcd_clk;
> void __iomem *regs;
> @@ -587,23 +588,22 @@ static void fimd_win_set_colkey(struct fimd_context *ctx, unsigned int win)
> * @protect: 1 to protect (disable updates)
> */
> static void fimd_shadow_protect_win(struct fimd_context *ctx,
> - unsigned int win, bool protect)
> + unsigned int win_bits, bool protect)
> {
> - u32 reg, bits, val;
> + u32 reg, val;
>
> if (ctx->driver_data->has_shadowcon) {
> reg = SHADOWCON;
> - bits = SHADOWCON_WINx_PROTECT(win);
> } else {
> reg = PRTCON;
> - bits = PRTCON_PROTECT;
> + win_bits = PRTCON_PROTECT;
> }
>
> val = readl(ctx->regs + reg);
> if (protect)
> - val |= bits;
> + val |= win_bits;
> else
> - val &= ~bits;
> + val &= ~win_bits;
> writel(val, ctx->regs + reg);
> }
>
> @@ -632,10 +632,6 @@ static void fimd_update_plane(struct exynos_drm_crtc *crtc,
> * is set.
> */
>
> - /* protect windows */
> - fimd_shadow_protect_win(ctx, win, true);
> -
> -
> offset = plane->src_x * bpp;
> offset += plane->src_y * pitch;
>
> @@ -707,11 +703,32 @@ static void fimd_update_plane(struct exynos_drm_crtc *crtc,
> if (ctx->driver_data->has_shadowcon)
> fimd_enable_shadow_channel_path(ctx, win, true);
>
> - /* Enable DMA channel and unprotect windows */
> - fimd_shadow_protect_win(ctx, win, false);
> + ctx->updated_plane |= SHADOWCON_WINx_PROTECT(win);
> +}
> +
> +static void fimd_begin(struct exynos_drm_crtc *crtc)
> +{
> + struct fimd_context *ctx = crtc->ctx;
> + int i;
> + unsigned int val = 0;
> +
> + for (i = 0; i < WINDOWS_NR; i++)
> + val |= SHADOWCON_WINx_PROTECT(i);
>
> - if (ctx->i80_if)
> - atomic_set(&ctx->win_updated, 1);
> + /* protect windows */
> + fimd_shadow_protect_win(ctx, val, true);
> +}
> +
> +static void fimd_flush(struct exynos_drm_crtc *crtc)
> +{
> + struct fimd_context *ctx = crtc->ctx;
> +
> + if (ctx->updated_plane) {
> + fimd_shadow_protect_win(ctx, ctx->updated_plane, false);
> +
> + if (ctx->i80_if)
> + atomic_set(&ctx->win_updated, 1);
> + }
> }
>
> static void fimd_disable_plane(struct exynos_drm_crtc *crtc,
> @@ -724,7 +741,7 @@ static void fimd_disable_plane(struct exynos_drm_crtc *crtc,
> return;
>
> /* protect windows */
> - fimd_shadow_protect_win(ctx, win, true);
> + fimd_shadow_protect_win(ctx, SHADOWCON_WINx_PROTECT(win), true);
>
> fimd_enable_video_output(ctx, win, false);
>
> @@ -732,7 +749,7 @@ static void fimd_disable_plane(struct exynos_drm_crtc *crtc,
> fimd_enable_shadow_channel_path(ctx, win, false);
>
> /* unprotect windows */
> - fimd_shadow_protect_win(ctx, win, false);
> + fimd_shadow_protect_win(ctx, SHADOWCON_WINx_PROTECT(win), false);
> }
>
> static void fimd_enable(struct exynos_drm_crtc *crtc)
> @@ -879,6 +896,8 @@ static const struct exynos_drm_crtc_ops fimd_crtc_ops = {
> .disable_plane = fimd_disable_plane,
> .te_handler = fimd_te_handler,
> .clock_enable = fimd_dp_clock_enable,
> + .atomic_begin = fimd_begin,
> + .atomic_flush = fimd_flush,
> };
>
> static irqreturn_t fimd_irq_handler(int irq, void *dev_id)
>
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