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From: Jagan Teki <jagan@amarulasolutions.com>
To: Inki Dae <inki.dae@samsung.com>,
	Joonyoung Shim <jy0922.shim@samsung.com>,
	Seung-Woo Kim <sw0312.kim@samsung.com>,
	Kyungmin Park <kyungmin.park@samsung.com>,
	Andrzej Hajda <a.hajda@samsung.com>,
	Neil Armstrong <narmstrong@baylibre.com>,
	Robert Foss <robert.foss@linaro.org>,
	Laurent Pinchart <Laurent.pinchart@ideasonboard.com>,
	Frieder Schrempf <frieder.schrempf@kontron.de>,
	Daniel Vetter <daniel.vetter@intel.com>,
	Marek Vasut <marex@denx.de>,
	Krzysztof Kozlowski <krzysztof.kozlowski@canonical.com>,
	Fabio Estevam <festevam@gmail.com>
Cc: dri-devel@lists.freedesktop.org, devicetree@vger.kernel.org,
	linux-samsung-soc@vger.kernel.org,
	linux-arm-kernel@lists.infradead.org,
	NXP Linux Team <linux-imx@nxp.com>,
	linux-amarula <linux-amarula@amarulasolutions.com>,
	Jagan Teki <jagan@amarulasolutions.com>
Subject: [RFC PATCH 06/17] drm/exynos: dsi: Handle exynos specifics via driver_data
Date: Sun,  4 Jul 2021 14:32:19 +0530	[thread overview]
Message-ID: <20210704090230.26489-7-jagan@amarulasolutions.com> (raw)
In-Reply-To: <20210704090230.26489-1-jagan@amarulasolutions.com>

Exynos DSI driver is actually a Samsung MIPI DSIM bridge
IP which is also used in i.MX8MM platforms.

Right now the existing driver has some exynos drm specific
code bases like te_irq, crtc and component_ops.

In order to switch this driver into a common bridge driver
We can see 2 options to handle the exynos specific code.

A. Drop the component_ops, and rework other specifics.
   This may lead to more foundation work as it requires
   more changes in exynos drm drivers stack.

B. Handle the exynos specifics via driver data, and make
   the common bridge work in different platforms and plan
   for option A in future.

So, this patch is trying to add option B) changes to handle
exynos specifics via driver_data.

Signed-off-by: Jagan Teki <jagan@amarulasolutions.com>
---
 drivers/gpu/drm/exynos/exynos_drm_dsi.c | 37 +++++++++++++++++++------
 1 file changed, 29 insertions(+), 8 deletions(-)

diff --git a/drivers/gpu/drm/exynos/exynos_drm_dsi.c b/drivers/gpu/drm/exynos/exynos_drm_dsi.c
index 99a1b8c22313..53d878d4d2d7 100644
--- a/drivers/gpu/drm/exynos/exynos_drm_dsi.c
+++ b/drivers/gpu/drm/exynos/exynos_drm_dsi.c
@@ -250,6 +250,7 @@ struct exynos_dsi_driver_data {
 	unsigned int wait_for_reset;
 	unsigned int num_bits_resol;
 	const unsigned int *reg_values;
+	bool exynos_specific;
 };
 
 struct exynos_dsi {
@@ -459,6 +460,7 @@ static const struct exynos_dsi_driver_data exynos3_dsi_driver_data = {
 	.wait_for_reset = 1,
 	.num_bits_resol = 11,
 	.reg_values = reg_values,
+	.exynos_specific = true,
 };
 
 static const struct exynos_dsi_driver_data exynos4_dsi_driver_data = {
@@ -471,6 +473,7 @@ static const struct exynos_dsi_driver_data exynos4_dsi_driver_data = {
 	.wait_for_reset = 1,
 	.num_bits_resol = 11,
 	.reg_values = reg_values,
+	.exynos_specific = true,
 };
 
 static const struct exynos_dsi_driver_data exynos5_dsi_driver_data = {
@@ -481,6 +484,7 @@ static const struct exynos_dsi_driver_data exynos5_dsi_driver_data = {
 	.wait_for_reset = 1,
 	.num_bits_resol = 11,
 	.reg_values = reg_values,
+	.exynos_specific = true,
 };
 
 static const struct exynos_dsi_driver_data exynos5433_dsi_driver_data = {
@@ -492,6 +496,7 @@ static const struct exynos_dsi_driver_data exynos5433_dsi_driver_data = {
 	.wait_for_reset = 0,
 	.num_bits_resol = 12,
 	.reg_values = exynos5433_reg_values,
+	.exynos_specific = true,
 };
 
 static const struct exynos_dsi_driver_data exynos5422_dsi_driver_data = {
@@ -503,6 +508,7 @@ static const struct exynos_dsi_driver_data exynos5422_dsi_driver_data = {
 	.wait_for_reset = 1,
 	.num_bits_resol = 12,
 	.reg_values = exynos5422_reg_values,
+	.exynos_specific = true,
 };
 
 static const struct of_device_id exynos_dsi_of_match[] = {
@@ -1484,7 +1490,8 @@ static int exynos_dsi_host_attach(struct mipi_dsi_host *host,
 	 * If attached panel device is for command mode one, dsi should register
 	 * TE interrupt handler.
 	 */
-	if (!(device->mode_flags & MIPI_DSI_MODE_VIDEO)) {
+	if (dsi->driver_data->exynos_specific &&
+	    !(device->mode_flags & MIPI_DSI_MODE_VIDEO)) {
 		int ret = exynos_dsi_register_te_irq(dsi, &device->dev);
 		if (ret)
 			return ret;
@@ -1495,8 +1502,9 @@ static int exynos_dsi_host_attach(struct mipi_dsi_host *host,
 	dsi->lanes = device->lanes;
 	dsi->format = device->format;
 	dsi->mode_flags = device->mode_flags;
-	exynos_drm_crtc_get_by_type(drm, EXYNOS_DISPLAY_TYPE_LCD)->i80_mode =
-			!(dsi->mode_flags & MIPI_DSI_MODE_VIDEO);
+	if (dsi->driver_data->exynos_specific)
+		exynos_drm_crtc_get_by_type(drm, EXYNOS_DISPLAY_TYPE_LCD)->i80_mode =
+					    !(dsi->mode_flags & MIPI_DSI_MODE_VIDEO);
 
 	mutex_unlock(&drm->mode_config.mutex);
 
@@ -1515,7 +1523,8 @@ static int exynos_dsi_host_detach(struct mipi_dsi_host *host,
 	if (drm->mode_config.poll_enabled)
 		drm_kms_helper_hotplug_event(drm);
 
-	exynos_dsi_unregister_te_irq(dsi);
+	if (dsi->driver_data->exynos_specific)
+		exynos_dsi_unregister_te_irq(dsi);
 
 	return 0;
 }
@@ -1737,6 +1746,15 @@ static int exynos_dsi_probe(struct platform_device *pdev)
 	if (ret)
 		return ret;
 
+	if (!dsi->driver_data->exynos_specific) {
+		ret = mipi_dsi_host_register(&dsi->dsi_host);
+		if (ret) {
+			dev_err(dev, "failed to register mipi dsi host: %d\n",
+				ret);
+			return ret;
+		}
+	}
+
 	platform_set_drvdata(pdev, dsi);
 
 	pm_runtime_enable(dev);
@@ -1747,9 +1765,11 @@ static int exynos_dsi_probe(struct platform_device *pdev)
 
 	drm_bridge_add(&dsi->bridge);
 
-	ret = component_add(dev, &exynos_dsi_component_ops);
-	if (ret)
-		goto err_disable_runtime;
+	if (dsi->driver_data->exynos_specific) {
+		ret = component_add(dev, &exynos_dsi_component_ops);
+		if (ret)
+			goto err_disable_runtime;
+	}
 
 	return 0;
 
@@ -1767,7 +1787,8 @@ static int exynos_dsi_remove(struct platform_device *pdev)
 
 	pm_runtime_disable(&pdev->dev);
 
-	component_del(&pdev->dev, &exynos_dsi_component_ops);
+	if (dsi->driver_data->exynos_specific)
+		component_del(&pdev->dev, &exynos_dsi_component_ops);
 
 	return 0;
 }
-- 
2.25.1


  parent reply	other threads:[~2021-07-04  9:04 UTC|newest]

Thread overview: 39+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2021-07-04  9:02 [RFC PATCH 00/17] drm: bridge: Samsung MIPI DSIM bridge Jagan Teki
2021-07-04  9:02 ` [RFC PATCH 01/17] drm/exynos: dsi: Convert to bridge driver Jagan Teki
2021-07-04  9:02 ` [RFC PATCH 02/17] drm/exynos: dsi: Handle drm_device for bridge Jagan Teki
2021-07-04  9:02 ` [RFC PATCH 03/17] drm/exynos: dsi: Use the drm_panel_bridge API Jagan Teki
2021-07-05 11:47   ` Marek Szyprowski
2021-07-05 12:00     ` Jagan Teki
2021-07-05 12:13       ` Marek Szyprowski
2021-07-05 12:34         ` Jagan Teki
2021-07-04  9:02 ` [RFC PATCH 04/17] drm/exynos: dsi: Create bridge connector for encoder Jagan Teki
2021-07-04  9:02 ` [RFC PATCH 05/17] drm/exynos: dsi: Get the mode from bridge Jagan Teki
2021-07-29 13:20   ` Robert Foss
2021-07-04  9:02 ` Jagan Teki [this message]
     [not found]   ` <YP2el40V3K4R7ner@ravnborg.org>
2021-07-25 17:31     ` [RFC PATCH 06/17] drm/exynos: dsi: Handle exynos specifics via driver_data Jagan Teki
2021-08-13  6:50     ` Inki Dae
2021-08-13 12:16       ` Laurent Pinchart
2021-08-18  6:09         ` Inki Dae
2021-07-04  9:02 ` [RFC PATCH 07/17] drm: bridge: Move exynos_drm_dsi into bridges Jagan Teki
2021-07-04  9:02 ` [RFC PATCH 08/17] dt-bindings: display: bridge: Add Samsung MIPI DSIM bridge Jagan Teki
2021-07-12 15:13   ` Rob Herring
2021-07-12 15:23     ` Jagan Teki
2021-07-04  9:02 ` [RFC PATCH 09/17] drm: bridge: samsung-dsim: Add module init, exit Jagan Teki
2021-07-04  9:02 ` [RFC PATCH 10/17] drm: bridge: samsung-dsim: Update the of_node for port(s) Jagan Teki
2021-07-04  9:02 ` [RFC PATCH 11/17] drm: bridge: samsung-dsim: Find the possible DSI devices Jagan Teki
2021-07-04  9:02 ` [RFC PATCH 12/17] dt-bindings: display: bridge: samsung,mipi-dsim: Add i.MX8MM support Jagan Teki
2021-07-14 22:59   ` Rob Herring
2021-07-04  9:02 ` [RFC PATCH 13/17] drm: bridge: samsung-dsim: " Jagan Teki
2021-07-04  9:02 ` [RFC PATCH 14/17] drm: bridge: samsung-dsim: Add input_bus_flags Jagan Teki
2021-07-04  9:02 ` [RFC PATCH 15/17] drm: bridge: samsung-dsim: Move DSI init in bridge enable Jagan Teki
2021-07-04  9:02 ` [RFC PATCH 16/17] drm: bridge: samsung-dsim: Fix PLL_P offset Jagan Teki
2021-07-04  9:02 ` [RFC PATCH 17/17] drm: bridge: samsung-dsim: Add bridge mode_fixup Jagan Teki
     [not found] ` <YP2ZvoVQyvwTXP++@ravnborg.org>
2021-07-25 17:13   ` [RFC PATCH 00/17] drm: bridge: Samsung MIPI DSIM bridge Jagan Teki
2021-10-05 21:43     ` Tim Harvey
2021-12-09  8:36       ` Michael Nazzareno Trimarchi
2021-12-09 16:40         ` Tim Harvey
2021-12-09 17:09           ` Michael Nazzareno Trimarchi
2021-12-09 17:57             ` Tim Harvey
2021-12-09 20:24             ` Lucas Stach
2021-12-09 21:24               ` Michael Nazzareno Trimarchi
2021-12-15 13:34                 ` Adam Ford

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