From: Svyatoslav Ryhel <clamor95@gmail.com>
To: Maarten Lankhorst <maarten.lankhorst@linux.intel.com>,
Maxime Ripard <mripard@kernel.org>,
Thomas Zimmermann <tzimmermann@suse.de>,
David Airlie <airlied@gmail.com>, Simona Vetter <simona@ffwll.ch>,
Rob Herring <robh@kernel.org>,
Krzysztof Kozlowski <krzk+dt@kernel.org>,
Conor Dooley <conor+dt@kernel.org>,
Thierry Reding <thierry.reding@kernel.org>,
Jonathan Hunter <jonathanh@nvidia.com>,
Neil Armstrong <neil.armstrong@linaro.org>,
Jessica Zhang <jesszhan0024@gmail.com>,
Mikko Perttunen <mperttunen@nvidia.com>,
Svyatoslav Ryhel <clamor95@gmail.com>
Cc: dri-devel@lists.freedesktop.org, devicetree@vger.kernel.org,
linux-tegra@vger.kernel.org, linux-kernel@vger.kernel.org
Subject: [PATCH v6 02/10] drm/panel: Convert Hitachi TX10D07VM0BAA to use MIPI DBI bus
Date: Thu, 5 Nov 2026 16:05:02 +0200 [thread overview]
Message-ID: <20261105140510.165165-3-clamor95@gmail.com> (raw)
In-Reply-To: <20261105140510.165165-1-clamor95@gmail.com>
Switch from a generic platform driver to a dedicated MIPI DBI driver.
Signed-off-by: Svyatoslav Ryhel <clamor95@gmail.com>
---
.../drm/panel/panel-hitachi-tx10d07vm0baa.c | 167 ++++++++----------
1 file changed, 78 insertions(+), 89 deletions(-)
diff --git a/drivers/gpu/drm/panel/panel-hitachi-tx10d07vm0baa.c b/drivers/gpu/drm/panel/panel-hitachi-tx10d07vm0baa.c
index 83c2af1be9755..d5d7ba2096608 100644
--- a/drivers/gpu/drm/panel/panel-hitachi-tx10d07vm0baa.c
+++ b/drivers/gpu/drm/panel/panel-hitachi-tx10d07vm0baa.c
@@ -14,6 +14,7 @@
#include <video/mipi_display.h>
#include <drm/drm_mipi_dbi.h>
+#include <drm/drm_mipi_dbi_bus.h>
#include <drm/drm_modes.h>
#include <drm/drm_of.h>
#include <drm/drm_panel.h>
@@ -25,7 +26,7 @@ static const struct regulator_bulk_data hitachi_tx10d07vm0baa_supplies[] = {
struct hitachi_tx10d07vm0baa {
struct drm_panel panel;
- struct mipi_dbi *dbi;
+ struct mipi_dbi_device *dbi;
struct regulator_bulk_data *supplies;
struct gpio_desc *reset_gpio;
@@ -36,13 +37,12 @@ static inline struct hitachi_tx10d07vm0baa *to_hitachi_tx10d07vm0baa(struct drm_
return container_of(panel, struct hitachi_tx10d07vm0baa, panel);
}
-#define panel_dbi_command(priv, cmd, seq...) \
+#define panel_dbi_command(dbidev, cmd, seq...) \
({ \
const u8 d[] = { seq }; \
- struct drm_panel *panel = &(priv)->panel; \
- struct device *dev = panel->dev; \
+ struct device *dev = &(dbidev)->dev; \
int ret; \
- ret = mipi_dbi_command_stackbuf((priv)->dbi, cmd, d, ARRAY_SIZE(d)); \
+ ret = mipi_dbi_command_stackbuf((dbidev)->dbi, cmd, d, ARRAY_SIZE(d)); \
if (ret) \
dev_err_ratelimited(dev, "error %d when sending command %#02x\n", ret, cmd); \
ret; \
@@ -54,10 +54,6 @@ static int hitachi_tx10d07vm0baa_prepare(struct drm_panel *panel)
struct device *dev = panel->dev;
int ret;
- priv->dbi = dev_get_drvdata(dev->parent);
- if (!priv->dbi)
- return -ENODEV;
-
gpiod_set_value_cansleep(priv->reset_gpio, 1);
ret = regulator_bulk_enable(ARRAY_SIZE(hitachi_tx10d07vm0baa_supplies), priv->supplies);
@@ -79,123 +75,116 @@ static int hitachi_tx10d07vm0baa_enable(struct drm_panel *panel)
{
struct hitachi_tx10d07vm0baa *priv = to_hitachi_tx10d07vm0baa(panel);
- panel_dbi_command(priv, MIPI_DCS_SET_PARTIAL_ROWS, 0x00, 0x00, 0x03, 0x1f);
- panel_dbi_command(priv, MIPI_DCS_SET_SCROLL_AREA, 0x00, 0x00, 0x03, 0x20,
+ panel_dbi_command(priv->dbi, MIPI_DCS_SET_PARTIAL_ROWS, 0x00, 0x00, 0x03, 0x1f);
+ panel_dbi_command(priv->dbi, MIPI_DCS_SET_SCROLL_AREA, 0x00, 0x00, 0x03, 0x20,
0x00, 0x00);
- panel_dbi_command(priv, MIPI_DCS_SET_ADDRESS_MODE, 0x0a);
- panel_dbi_command(priv, MIPI_DCS_SET_SCROLL_START, 0x00, 0x00);
+ panel_dbi_command(priv->dbi, MIPI_DCS_SET_ADDRESS_MODE, 0x0a);
+ panel_dbi_command(priv->dbi, MIPI_DCS_SET_SCROLL_START, 0x00, 0x00);
- panel_dbi_command(priv, MIPI_DCS_SET_PIXEL_FORMAT, MIPI_DCS_PIXEL_FMT_24BIT);
- panel_dbi_command(priv, MIPI_DCS_SET_TEAR_SCANLINE, 0x00, 0x00);
+ panel_dbi_command(priv->dbi, MIPI_DCS_SET_PIXEL_FORMAT, MIPI_DCS_PIXEL_FMT_24BIT);
+ panel_dbi_command(priv->dbi, MIPI_DCS_SET_TEAR_SCANLINE, 0x00, 0x00);
- panel_dbi_command(priv, 0x71, 0x00); /* Ex_Vsync_en */
+ panel_dbi_command(priv->dbi, 0x71, 0x00); /* Ex_Vsync_en */
- panel_dbi_command(priv, 0xb2, 0x00); /* VCSEL */
- panel_dbi_command(priv, 0xb4, 0xaa); /* setvgmpm */
- panel_dbi_command(priv, 0xb5, 0x33); /* rbias1 */
- panel_dbi_command(priv, 0xb6, 0x03); /* rbias2 */
+ panel_dbi_command(priv->dbi, 0xb2, 0x00); /* VCSEL */
+ panel_dbi_command(priv->dbi, 0xb4, 0xaa); /* setvgmpm */
+ panel_dbi_command(priv->dbi, 0xb5, 0x33); /* rbias1 */
+ panel_dbi_command(priv->dbi, 0xb6, 0x03); /* rbias2 */
- panel_dbi_command(priv, 0xb7, 0x1a, 0x33, 0x03, 0x03,
+ panel_dbi_command(priv->dbi, 0xb7, 0x1a, 0x33, 0x03, 0x03,
0x03, 0x00, 0x00, 0x01, 0x02, 0x00,
0x00, 0x04, 0x00, 0x01, 0x01, 0x01); /* set_ddvdhp */
- panel_dbi_command(priv, 0xb8, 0x1c, 0x53, 0x03, 0x03,
+ panel_dbi_command(priv->dbi, 0xb8, 0x1c, 0x53, 0x03, 0x03,
0x00, 0x01, 0x02, 0x00, 0x00, 0x04,
0x00, 0x01, 0x01); /* set_ddvdhm */
- panel_dbi_command(priv, 0xb9, 0x0a, 0x01, 0x01, 0x00,
+ panel_dbi_command(priv->dbi, 0xb9, 0x0a, 0x01, 0x01, 0x00,
0x00, 0x00, 0x02, 0x00, 0x02, 0x01); /* set_vgh */
- panel_dbi_command(priv, 0xba, 0x0f, 0x01, 0x01, 0x00,
+ panel_dbi_command(priv->dbi, 0xba, 0x0f, 0x01, 0x01, 0x00,
0x00, 0x00, 0x02, 0x00, 0x02, 0x01); /* set_vgl */
- panel_dbi_command(priv, 0xbb, 0x00, 0x00, 0x00, 0x00,
+ panel_dbi_command(priv->dbi, 0xbb, 0x00, 0x00, 0x00, 0x00,
0x01, 0x02, 0x01); /* set_vcl */
- panel_dbi_command(priv, 0xc1, 0x01); /* number of lines */
- panel_dbi_command(priv, 0xc2, 0x08); /* number of fp lines */
- panel_dbi_command(priv, 0xc3, 0x04); /* gateset(1) */
- panel_dbi_command(priv, 0xc4, 0x4c); /* 1h period */
- panel_dbi_command(priv, 0xc5, 0x03); /* source precharge */
- panel_dbi_command(priv, 0xc6, 0xc4, 0x04); /* source precharge timing */
- panel_dbi_command(priv, 0xc7, 0x00); /* source level */
- panel_dbi_command(priv, 0xc8, 0x02); /* number of bp lines */
- panel_dbi_command(priv, 0xc9, 0x10); /* gateset(2) */
- panel_dbi_command(priv, 0xca, 0x04, 0x04); /* gateset(3) */
- panel_dbi_command(priv, 0xcb, 0x03); /* gateset(4) */
- panel_dbi_command(priv, 0xcc, 0x12); /* gateset(5) */
- panel_dbi_command(priv, 0xcd, 0x12); /* gateset(6) */
- panel_dbi_command(priv, 0xce, 0x30); /* gateset(7) */
- panel_dbi_command(priv, 0xcf, 0x30); /* gateset(8) */
- panel_dbi_command(priv, 0xd0, 0x40); /* gateset(9) */
- panel_dbi_command(priv, 0xd1, 0x22); /* flhw */
- panel_dbi_command(priv, 0xd2, 0x22); /* vckhw */
- panel_dbi_command(priv, 0xd3, 0x04); /* flt */
- panel_dbi_command(priv, 0xd4, 0x14); /* tctrl */
- panel_dbi_command(priv, 0xd6, 0x02); /* dotinv */
- panel_dbi_command(priv, 0xd7, 0x00); /* on/off sequence period */
-
- panel_dbi_command(priv, 0xd8, 0x01, 0x05, 0x06, 0x0d,
+ panel_dbi_command(priv->dbi, 0xc1, 0x01); /* number of lines */
+ panel_dbi_command(priv->dbi, 0xc2, 0x08); /* number of fp lines */
+ panel_dbi_command(priv->dbi, 0xc3, 0x04); /* gateset(1) */
+ panel_dbi_command(priv->dbi, 0xc4, 0x4c); /* 1h period */
+ panel_dbi_command(priv->dbi, 0xc5, 0x03); /* source precharge */
+ panel_dbi_command(priv->dbi, 0xc6, 0xc4, 0x04); /* source precharge timing */
+ panel_dbi_command(priv->dbi, 0xc7, 0x00); /* source level */
+ panel_dbi_command(priv->dbi, 0xc8, 0x02); /* number of bp lines */
+ panel_dbi_command(priv->dbi, 0xc9, 0x10); /* gateset(2) */
+ panel_dbi_command(priv->dbi, 0xca, 0x04, 0x04); /* gateset(3) */
+ panel_dbi_command(priv->dbi, 0xcb, 0x03); /* gateset(4) */
+ panel_dbi_command(priv->dbi, 0xcc, 0x12); /* gateset(5) */
+ panel_dbi_command(priv->dbi, 0xcd, 0x12); /* gateset(6) */
+ panel_dbi_command(priv->dbi, 0xce, 0x30); /* gateset(7) */
+ panel_dbi_command(priv->dbi, 0xcf, 0x30); /* gateset(8) */
+ panel_dbi_command(priv->dbi, 0xd0, 0x40); /* gateset(9) */
+ panel_dbi_command(priv->dbi, 0xd1, 0x22); /* flhw */
+ panel_dbi_command(priv->dbi, 0xd2, 0x22); /* vckhw */
+ panel_dbi_command(priv->dbi, 0xd3, 0x04); /* flt */
+ panel_dbi_command(priv->dbi, 0xd4, 0x14); /* tctrl */
+ panel_dbi_command(priv->dbi, 0xd6, 0x02); /* dotinv */
+ panel_dbi_command(priv->dbi, 0xd7, 0x00); /* on/off sequence period */
+
+ panel_dbi_command(priv->dbi, 0xd8, 0x01, 0x05, 0x06, 0x0d,
0x18, 0x09, 0x22, 0x23, 0x00); /* ponseqa */
- panel_dbi_command(priv, 0xd9, 0x24, 0x01); /* ponseqb */
- panel_dbi_command(priv, 0xde, 0x09, 0x0f, 0x21, 0x12,
+ panel_dbi_command(priv->dbi, 0xd9, 0x24, 0x01); /* ponseqb */
+ panel_dbi_command(priv->dbi, 0xde, 0x09, 0x0f, 0x21, 0x12,
0x04); /* ponseqc */
- panel_dbi_command(priv, 0xdf, 0x02, 0x06, 0x06, 0x06,
+ panel_dbi_command(priv->dbi, 0xdf, 0x02, 0x06, 0x06, 0x06,
0x06, 0x00); /* pofseqa */
- panel_dbi_command(priv, 0xe0, 0x01); /* pofseqb */
+ panel_dbi_command(priv->dbi, 0xe0, 0x01); /* pofseqb */
- panel_dbi_command(priv, MIPI_DCS_SET_DISPLAY_BRIGHTNESS, 0xff);
- panel_dbi_command(priv, MIPI_DCS_WRITE_CONTROL_DISPLAY, 0x40);
+ panel_dbi_command(priv->dbi, MIPI_DCS_SET_DISPLAY_BRIGHTNESS, 0xff);
+ panel_dbi_command(priv->dbi, MIPI_DCS_WRITE_CONTROL_DISPLAY, 0x40);
- panel_dbi_command(priv, 0xe2, 0x00, 0x00); /* cabc pwm */
- panel_dbi_command(priv, 0xe3, 0x03); /* cabc */
- panel_dbi_command(priv, 0xe4, 0x66, 0x7b, 0x90, 0xa5,
+ panel_dbi_command(priv->dbi, 0xe2, 0x00, 0x00); /* cabc pwm */
+ panel_dbi_command(priv->dbi, 0xe3, 0x03); /* cabc */
+ panel_dbi_command(priv->dbi, 0xe4, 0x66, 0x7b, 0x90, 0xa5,
0xbb, 0xc7, 0xe1, 0xe5); /* cabc brightness */
- panel_dbi_command(priv, 0xe5, 0xc5, 0xc5, 0xc9, 0xc9,
+ panel_dbi_command(priv->dbi, 0xe5, 0xc5, 0xc5, 0xc9, 0xc9,
0xd1, 0xe1, 0xf1, 0xfe); /* cabc brightness */
- panel_dbi_command(priv, 0xe7, 0x2a); /* cabc */
- panel_dbi_command(priv, 0xe8, 0x00); /* brt_rev */
- panel_dbi_command(priv, 0xe9, 0x00); /* tefreq */
+ panel_dbi_command(priv->dbi, 0xe7, 0x2a); /* cabc */
+ panel_dbi_command(priv->dbi, 0xe8, 0x00); /* brt_rev */
+ panel_dbi_command(priv->dbi, 0xe9, 0x00); /* tefreq */
- panel_dbi_command(priv, 0xea, 0x01); /* high speed ram */
+ panel_dbi_command(priv->dbi, 0xea, 0x01); /* high speed ram */
- panel_dbi_command(priv, 0xeb, 0x00, 0x33, 0x0e, 0x15,
+ panel_dbi_command(priv->dbi, 0xeb, 0x00, 0x33, 0x0e, 0x15,
0xb7, 0x78, 0x88, 0x0f); /* gamma setting r pos */
- panel_dbi_command(priv, 0xec, 0x00, 0x33, 0x0e, 0x15,
+ panel_dbi_command(priv->dbi, 0xec, 0x00, 0x33, 0x0e, 0x15,
0xb7, 0x78, 0x88, 0x0f); /* gamma setting r neg */
- panel_dbi_command(priv, 0xed, 0x00, 0x33, 0x0e, 0x15,
+ panel_dbi_command(priv->dbi, 0xed, 0x00, 0x33, 0x0e, 0x15,
0xb7, 0x78, 0x88, 0x0f); /* gamma setting g pos */
- panel_dbi_command(priv, 0xee, 0x00, 0x33, 0x0e, 0x15,
+ panel_dbi_command(priv->dbi, 0xee, 0x00, 0x33, 0x0e, 0x15,
0xb7, 0x78, 0x88, 0x0f); /* gamma setting g neg */
- panel_dbi_command(priv, 0xef, 0x00, 0x33, 0x0e, 0x15,
+ panel_dbi_command(priv->dbi, 0xef, 0x00, 0x33, 0x0e, 0x15,
0xb7, 0x78, 0x88, 0x0f); /* gamma setting b pos */
- panel_dbi_command(priv, 0xf0, 0x00, 0x33, 0x0e, 0x15,
+ panel_dbi_command(priv->dbi, 0xf0, 0x00, 0x33, 0x0e, 0x15,
0xb7, 0x78, 0x88, 0x0f); /* gamma setting b neg */
- panel_dbi_command(priv, MIPI_DCS_EXIT_SLEEP_MODE);
+ panel_dbi_command(priv->dbi, MIPI_DCS_EXIT_SLEEP_MODE);
msleep(110);
- panel_dbi_command(priv, MIPI_DCS_SET_DISPLAY_ON);
+ panel_dbi_command(priv->dbi, MIPI_DCS_SET_DISPLAY_ON);
return 0;
}
-static int hitachi_tx10d07vm0baa_disable(struct drm_panel *panel)
+static int hitachi_tx10d07vm0baa_unprepare(struct drm_panel *panel)
{
struct hitachi_tx10d07vm0baa *priv = to_hitachi_tx10d07vm0baa(panel);
- panel_dbi_command(priv, MIPI_DCS_SET_DISPLAY_OFF);
+ panel_dbi_command(priv->dbi, MIPI_DCS_SET_DISPLAY_OFF);
msleep(35);
- panel_dbi_command(priv, MIPI_DCS_ENTER_SLEEP_MODE);
+ panel_dbi_command(priv->dbi, MIPI_DCS_ENTER_SLEEP_MODE);
msleep(50);
- return 0;
-}
-
-static int hitachi_tx10d07vm0baa_unprepare(struct drm_panel *panel)
-{
- struct hitachi_tx10d07vm0baa *priv = to_hitachi_tx10d07vm0baa(panel);
-
gpiod_set_value_cansleep(priv->reset_gpio, 1);
regulator_bulk_disable(ARRAY_SIZE(hitachi_tx10d07vm0baa_supplies), priv->supplies);
@@ -238,15 +227,14 @@ static int hitachi_tx10d07vm0baa_get_modes(struct drm_panel *panel,
static const struct drm_panel_funcs hitachi_tx10d07vm0baa_panel_funcs = {
.prepare = hitachi_tx10d07vm0baa_prepare,
.enable = hitachi_tx10d07vm0baa_enable,
- .disable = hitachi_tx10d07vm0baa_disable,
.unprepare = hitachi_tx10d07vm0baa_unprepare,
.get_modes = hitachi_tx10d07vm0baa_get_modes,
};
-static int hitachi_tx10d07vm0baa_probe(struct platform_device *pdev)
+static int hitachi_tx10d07vm0baa_probe(struct mipi_dbi_device *dbi)
{
- struct device *dev = &pdev->dev;
struct hitachi_tx10d07vm0baa *priv;
+ struct device *dev = &dbi->dev;
int ret;
priv = devm_drm_panel_alloc(dev, struct hitachi_tx10d07vm0baa, panel,
@@ -264,6 +252,9 @@ static int hitachi_tx10d07vm0baa_probe(struct platform_device *pdev)
return dev_err_probe(dev, PTR_ERR(priv->reset_gpio),
"Failed to get reset gpio\n");
+ priv->dbi = dbi;
+ mipi_dbi_set_drvdata(dbi, priv);
+
ret = drm_panel_of_backlight(&priv->panel);
if (ret)
return dev_err_probe(dev, ret, "Failed to get backlight\n");
@@ -272,9 +263,7 @@ static int hitachi_tx10d07vm0baa_probe(struct platform_device *pdev)
if (ret)
return dev_err_probe(dev, ret, "Failed to add panel\n");
- platform_set_drvdata(pdev, priv);
-
- return 0;
+ return devm_mipi_dbi_attach(dev, dbi);
}
static const struct of_device_id hitachi_tx10d07vm0baa_of_match[] = {
@@ -283,14 +272,14 @@ static const struct of_device_id hitachi_tx10d07vm0baa_of_match[] = {
};
MODULE_DEVICE_TABLE(of, hitachi_tx10d07vm0baa_of_match);
-static struct platform_driver hitachi_tx10d07vm0baa_driver = {
+static struct mipi_dbi_driver hitachi_tx10d07vm0baa_driver = {
.driver = {
.name = "panel-hitachi-tx10d07vm0baa",
.of_match_table = hitachi_tx10d07vm0baa_of_match,
},
.probe = hitachi_tx10d07vm0baa_probe,
};
-module_platform_driver(hitachi_tx10d07vm0baa_driver);
+module_mipi_dbi_driver(hitachi_tx10d07vm0baa_driver);
MODULE_AUTHOR("Svyatoslav Ryhel <clamor95@gmail.com>");
MODULE_DESCRIPTION("HITACHI TX10D07VM0BAA MIPI DBI Type B panel driver");
--
2.53.0
next prev parent reply other threads:[~2026-11-05 14:05 UTC|newest]
Thread overview: 12+ messages / expand[flat|nested] mbox.gz Atom feed top
2026-11-05 14:05 [PATCH v6 00/10] drm/tegra: Add support for Tegra20/Tegra30 8-bit CPU interface Svyatoslav Ryhel
2026-11-05 14:05 ` [PATCH v6 01/10] drm: Add MIPI DBI bus support for MIPI DBI Type A and B Svyatoslav Ryhel
2026-11-05 14:05 ` Svyatoslav Ryhel [this message]
2026-11-05 14:05 ` [PATCH v6 03/10] drm/panel: Convert LG LH400WV3-SD04 to use MIPI DBI bus Svyatoslav Ryhel
2026-11-05 14:05 ` [PATCH v6 04/10] drm/tegra: dc: Refactor and expand header Svyatoslav Ryhel
2026-11-05 14:05 ` [PATCH v6 05/10] dt-bindings: display: tegra: Document Tegra20 DSI port Svyatoslav Ryhel
2026-11-05 14:05 ` [PATCH v6 06/10] drm/tegra: Make panel parsing by tegra_output_probe() optional Svyatoslav Ryhel
2026-11-05 14:05 ` [PATCH v6 07/10] drm/tegra: Convert to use atomic versions of drm_encoder_helper_funcs Svyatoslav Ryhel
2026-11-05 14:05 ` [PATCH v6 08/10] drm/tegra: rgb: Parameterize configuration based on bus flags Svyatoslav Ryhel
2026-11-05 14:05 ` [PATCH v6 09/10] dt-bindings: display: tegra: Document 8-bit CPU parallel interface Svyatoslav Ryhel
2026-11-05 22:58 ` Rob Herring (Arm)
2026-11-05 14:05 ` [PATCH v6 10/10] drm/tegra: Add support for 8-bit CPU interface Svyatoslav Ryhel
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