Commit 1b8e5747 authored by Rahul Sharma's avatar Rahul Sharma Committed by Inki Dae
Browse files

drm: exynos: hdmi: add support to disable video processor in mixer 



This patch adds support for disabling the video processor code based
on the platform type. This is done based on a field in the mixer driver
data which changes with the platform variant.

Signed-off-by: default avatarRahul Sharma <rahul.sharma@samsung.com>
Signed-off-by: default avatarKyungmin Park <kyungmin.park@samsung.com>
Signed-off-by: default avatarInki Dae <inki.dae@samsung.com>
parent 1e123441

drivers/gpu/drm/exynos/exynos_mixer.c

+98 −53
Original line number Diff line number Diff line
@@ -83,6 +83,7 @@ struct mixer_context { 
	int			pipe;

	bool			interlace;

	bool			powered;

	bool			vp_enabled;

	u32			int_en;



	struct mutex		mixer_mutex;
@@ -93,6 +94,7 @@ struct mixer_context { 


struct mixer_drv_data {

	enum mixer_version_id	version;

	bool					is_vp_enabled;

};



static const u8 filter_y_horiz_tap8[] = {
@@ -261,6 +263,7 @@ static void mixer_vsync_set_update(struct mixer_context *ctx, bool enable) 
	mixer_reg_writemask(res, MXR_STATUS, enable ?

			MXR_STATUS_SYNC_ENABLE : 0, MXR_STATUS_SYNC_ENABLE);



	if (ctx->vp_enabled)

		vp_reg_write(res, VP_SHADOW_UPDATE, enable ?

			VP_SHADOW_UPDATE_ENABLE : 0);

}
@@ -343,8 +346,11 @@ static void mixer_cfg_layer(struct mixer_context *ctx, int win, bool enable) 
		mixer_reg_writemask(res, MXR_CFG, val, MXR_CFG_GRP1_ENABLE);

		break;

	case 2:

		if (ctx->vp_enabled) {

			vp_reg_writemask(res, VP_ENABLE, val, VP_ENABLE_ON);

		mixer_reg_writemask(res, MXR_CFG, val, MXR_CFG_VP_ENABLE);

			mixer_reg_writemask(res, MXR_CFG, val,

				MXR_CFG_VP_ENABLE);

		}

		break;

	}

}
@@ -602,6 +608,7 @@ static void mixer_win_reset(struct mixer_context *ctx) 
	 */

	val = MXR_LAYER_CFG_GRP1_VAL(3);

	val |= MXR_LAYER_CFG_GRP0_VAL(2);

	if (ctx->vp_enabled)

		val |= MXR_LAYER_CFG_VP_VAL(1);

	mixer_reg_write(res, MXR_LAYER_CFG, val);
@@ -625,13 +632,16 @@ static void mixer_win_reset(struct mixer_context *ctx) 
	val = MXR_GRP_CFG_ALPHA_VAL(0);

	mixer_reg_write(res, MXR_VIDEO_CFG, val);



	if (ctx->vp_enabled) {

		/* configuration of Video Processor Registers */

		vp_win_reset(ctx);

		vp_default_filter(res);

	}



	/* disable all layers */

	mixer_reg_writemask(res, MXR_CFG, 0, MXR_CFG_GRP0_ENABLE);

	mixer_reg_writemask(res, MXR_CFG, 0, MXR_CFG_GRP1_ENABLE);

	if (ctx->vp_enabled)

		mixer_reg_writemask(res, MXR_CFG, 0, MXR_CFG_VP_ENABLE);



	mixer_vsync_set_update(ctx, true);
@@ -655,8 +665,10 @@ static void mixer_poweron(struct mixer_context *ctx) 
	pm_runtime_get_sync(ctx->dev);



	clk_enable(res->mixer);

	if (ctx->vp_enabled) {

		clk_enable(res->vp);

		clk_enable(res->sclk_mixer);

	}



	mixer_reg_write(res, MXR_INT_EN, ctx->int_en);

	mixer_win_reset(ctx);
@@ -676,8 +688,10 @@ static void mixer_poweroff(struct mixer_context *ctx) 
	ctx->int_en = mixer_reg_read(res, MXR_INT_EN);



	clk_disable(res->mixer);

	if (ctx->vp_enabled) {

		clk_disable(res->vp);

		clk_disable(res->sclk_mixer);

	}



	pm_runtime_put_sync(ctx->dev);
@@ -810,7 +824,7 @@ static void mixer_win_commit(void *ctx, int win) 


	DRM_DEBUG_KMS("[%d] %s, win: %d\n", __LINE__, __func__, win);



	if (win > 1)

	if (win > 1 && mixer_ctx->vp_enabled)

		vp_video_buffer(mixer_ctx, win);

	else

		mixer_graph_buffer(mixer_ctx, win);
@@ -946,39 +960,20 @@ static int __devinit mixer_resources_init(struct exynos_drm_hdmi_context *ctx, 
		ret = -ENODEV;

		goto fail;

	}

	mixer_res->vp = clk_get(dev, "vp");

	if (IS_ERR_OR_NULL(mixer_res->vp)) {

		dev_err(dev, "failed to get clock 'vp'\n");

		ret = -ENODEV;

		goto fail;

	}

	mixer_res->sclk_mixer = clk_get(dev, "sclk_mixer");

	if (IS_ERR_OR_NULL(mixer_res->sclk_mixer)) {

		dev_err(dev, "failed to get clock 'sclk_mixer'\n");

		ret = -ENODEV;

		goto fail;

	}



	mixer_res->sclk_hdmi = clk_get(dev, "sclk_hdmi");

	if (IS_ERR_OR_NULL(mixer_res->sclk_hdmi)) {

		dev_err(dev, "failed to get clock 'sclk_hdmi'\n");

		ret = -ENODEV;

		goto fail;

	}

	mixer_res->sclk_dac = clk_get(dev, "sclk_dac");

	if (IS_ERR_OR_NULL(mixer_res->sclk_dac)) {

		dev_err(dev, "failed to get clock 'sclk_dac'\n");

		ret = -ENODEV;

		goto fail;

	}

	res = platform_get_resource_byname(pdev, IORESOURCE_MEM, "mxr");

	res = platform_get_resource(pdev, IORESOURCE_MEM, 0);

	if (res == NULL) {

		dev_err(dev, "get memory resource failed.\n");

		ret = -ENXIO;

		goto fail;

	}



	clk_set_parent(mixer_res->sclk_mixer, mixer_res->sclk_hdmi);



	mixer_res->mixer_regs = devm_ioremap(&pdev->dev, res->start,

							resource_size(res));

	if (mixer_res->mixer_regs == NULL) {
@@ -987,54 +982,92 @@ static int __devinit mixer_resources_init(struct exynos_drm_hdmi_context *ctx, 
		goto fail;

	}



	res = platform_get_resource_byname(pdev, IORESOURCE_MEM, "vp");

	res = platform_get_resource(pdev, IORESOURCE_IRQ, 0);

	if (res == NULL) {

		dev_err(dev, "get memory resource failed.\n");

		dev_err(dev, "get interrupt resource failed.\n");

		ret = -ENXIO;

		goto fail;

	}



	mixer_res->vp_regs = devm_ioremap(&pdev->dev, res->start,

							resource_size(res));

	if (mixer_res->vp_regs == NULL) {

		dev_err(dev, "register mapping failed.\n");

		ret = -ENXIO;

	ret = devm_request_irq(&pdev->dev, res->start, mixer_irq_handler,

							0, "drm_mixer", ctx);

	if (ret) {

		dev_err(dev, "request interrupt failed.\n");

		goto fail;

	}

	mixer_res->irq = res->start;



	res = platform_get_resource_byname(pdev, IORESOURCE_IRQ, "irq");

	return 0;



fail:

	if (!IS_ERR_OR_NULL(mixer_res->sclk_hdmi))

		clk_put(mixer_res->sclk_hdmi);

	if (!IS_ERR_OR_NULL(mixer_res->mixer))

		clk_put(mixer_res->mixer);

	return ret;

}



static int __devinit vp_resources_init(struct exynos_drm_hdmi_context *ctx,

				 struct platform_device *pdev)

{

	struct mixer_context *mixer_ctx = ctx->ctx;

	struct device *dev = &pdev->dev;

	struct mixer_resources *mixer_res = &mixer_ctx->mixer_res;

	struct resource *res;

	int ret;



	mixer_res->vp = clk_get(dev, "vp");

	if (IS_ERR_OR_NULL(mixer_res->vp)) {

		dev_err(dev, "failed to get clock 'vp'\n");

		ret = -ENODEV;

		goto fail;

	}

	mixer_res->sclk_mixer = clk_get(dev, "sclk_mixer");

	if (IS_ERR_OR_NULL(mixer_res->sclk_mixer)) {

		dev_err(dev, "failed to get clock 'sclk_mixer'\n");

		ret = -ENODEV;

		goto fail;

	}

	mixer_res->sclk_dac = clk_get(dev, "sclk_dac");

	if (IS_ERR_OR_NULL(mixer_res->sclk_dac)) {

		dev_err(dev, "failed to get clock 'sclk_dac'\n");

		ret = -ENODEV;

		goto fail;

	}



	if (mixer_res->sclk_hdmi)

		clk_set_parent(mixer_res->sclk_mixer, mixer_res->sclk_hdmi);



	res = platform_get_resource(pdev, IORESOURCE_MEM, 1);

	if (res == NULL) {

		dev_err(dev, "get interrupt resource failed.\n");

		dev_err(dev, "get memory resource failed.\n");

		ret = -ENXIO;

		goto fail;

	}



	ret = devm_request_irq(&pdev->dev, res->start, mixer_irq_handler,

							0, "drm_mixer", ctx);

	if (ret) {

		dev_err(dev, "request interrupt failed.\n");

	mixer_res->vp_regs = devm_ioremap(&pdev->dev, res->start,

							resource_size(res));

	if (mixer_res->vp_regs == NULL) {

		dev_err(dev, "register mapping failed.\n");

		ret = -ENXIO;

		goto fail;

	}

	mixer_res->irq = res->start;



	return 0;



fail:

	if (!IS_ERR_OR_NULL(mixer_res->sclk_dac))

		clk_put(mixer_res->sclk_dac);

	if (!IS_ERR_OR_NULL(mixer_res->sclk_hdmi))

		clk_put(mixer_res->sclk_hdmi);

	if (!IS_ERR_OR_NULL(mixer_res->sclk_mixer))

		clk_put(mixer_res->sclk_mixer);

	if (!IS_ERR_OR_NULL(mixer_res->vp))

		clk_put(mixer_res->vp);

	if (!IS_ERR_OR_NULL(mixer_res->mixer))

		clk_put(mixer_res->mixer);

	return ret;

}



static struct mixer_drv_data exynos4_mxr_drv_data = {

	.version = MXR_VER_0_0_0_16,

	.is_vp_enabled = 1,

};



static struct platform_device_id mixer_driver_types[] = {
@@ -1075,14 +1108,26 @@ static int __devinit mixer_probe(struct platform_device *pdev) 
			pdev)->driver_data;

	ctx->dev = &pdev->dev;

	drm_hdmi_ctx->ctx = (void *)ctx;

	ctx->vp_enabled = drv->is_vp_enabled;

	ctx->mxr_ver = drv->version;



	platform_set_drvdata(pdev, drm_hdmi_ctx);



	/* acquire resources: regs, irqs, clocks */

	ret = mixer_resources_init(drm_hdmi_ctx, pdev);

	if (ret)

	if (ret) {

		DRM_ERROR("mixer_resources_init failed\n");

		goto fail;

	}



	if (ctx->vp_enabled) {

		/* acquire vp resources: regs, irqs, clocks */

		ret = vp_resources_init(drm_hdmi_ctx, pdev);

		if (ret) {

			DRM_ERROR("vp_resources_init failed\n");

			goto fail;

		}

	}



	/* register specific callback point to common hdmi. */

	exynos_mixer_ops_register(&mixer_ops);

CRA Git | Maintained and supported by SUSTech CRA and CCSE