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Signed-off-by: Tejas Vipin --- drivers/gpu/drm/drm_mipi_dsi.c | 164 +++++++++++++++++++++++++++++++++ include/drm/drm_mipi_dsi.h | 10 ++ 2 files changed, 174 insertions(+) diff --git a/drivers/gpu/drm/drm_mipi_dsi.c b/drivers/gpu/drm/drm_mipi_dsi.c index a471c46f5ca6..3f7fe734b684 100644 --- a/drivers/gpu/drm/drm_mipi_dsi.c +++ b/drivers/gpu/drm/drm_mipi_dsi.c @@ -1639,6 +1639,170 @@ void mipi_dsi_dcs_set_tear_on_multi(struct mipi_dsi= _multi_context *ctx, } EXPORT_SYMBOL(mipi_dsi_dcs_set_tear_on_multi); =20 +/** + * mipi_dsi_turn_on_peripheral_multi() - sends a Turn On Peripheral command + * @ctx: Context for multiple DSI transactions + * + * Like mipi_dsi_turn_on_peripheral() but deals with errors in a way that + * makes it convenient to make several calls in a row. + */ +void mipi_dsi_turn_on_peripheral_multi(struct mipi_dsi_multi_context *ctx) +{ + struct mipi_dsi_device *dsi =3D ctx->dsi; + struct device *dev =3D &dsi->dev; + ssize_t ret; + + if (ctx->accum_err) + return; + + ret =3D mipi_dsi_turn_on_peripheral(dsi); + if (ret < 0) { + ctx->accum_err =3D ret; + dev_err(dev, "Failed to turn on peripheral: %d\n", + ctx->accum_err); + } +} +EXPORT_SYMBOL(mipi_dsi_turn_on_peripheral_multi); + +/** + * mipi_dsi_dcs_soft_reset_multi() - perform a software reset of the displ= ay module + * @ctx: Context for multiple DSI transactions + * + * Like mipi_dsi_dcs_soft_reset() but deals with errors in a way that + * makes it convenient to make several calls in a row. + */ +void mipi_dsi_dcs_soft_reset_multi(struct mipi_dsi_multi_context *ctx) +{ + struct mipi_dsi_device *dsi =3D ctx->dsi; + struct device *dev =3D &dsi->dev; + ssize_t ret; + + if (ctx->accum_err) + return; + + ret =3D mipi_dsi_dcs_soft_reset(dsi); + if (ret < 0) { + ctx->accum_err =3D ret; + dev_err(dev, "Failed to mipi_dsi_dcs_soft_reset: %d\n", + ctx->accum_err); + } +} +EXPORT_SYMBOL(mipi_dsi_dcs_soft_reset_multi); + +/** + * mipi_dsi_dcs_set_display_brightness_multi() - sets the brightness value= of + * the display + * @ctx: Context for multiple DSI transactions + * @brightness: brightness value + * + * Like mipi_dsi_dcs_set_display_brightness() but deals with errors in a w= ay that + * makes it convenient to make several calls in a row. + */ +void mipi_dsi_dcs_set_display_brightness_multi(struct mipi_dsi_multi_conte= xt *ctx, + u16 brightness) +{ + struct mipi_dsi_device *dsi =3D ctx->dsi; + struct device *dev =3D &dsi->dev; + ssize_t ret; + + if (ctx->accum_err) + return; + + ret =3D mipi_dsi_dcs_set_display_brightness(dsi, brightness); + if (ret < 0) { + ctx->accum_err =3D ret; + dev_err(dev, "Failed to write display brightness: %d\n", + ctx->accum_err); + } +} +EXPORT_SYMBOL(mipi_dsi_dcs_set_display_brightness_multi); + +/** + * mipi_dsi_dcs_set_pixel_format_multi() - sets the pixel format for the R= GB image + * data used by the interface + * @ctx: Context for multiple DSI transactions + * @format: pixel format + * + * Like mipi_dsi_dcs_set_pixel_format() but deals with errors in a way that + * makes it convenient to make several calls in a row. + */ +void mipi_dsi_dcs_set_pixel_format_multi(struct mipi_dsi_multi_context *ct= x, + u8 format) +{ + struct mipi_dsi_device *dsi =3D ctx->dsi; + struct device *dev =3D &dsi->dev; + ssize_t ret; + + if (ctx->accum_err) + return; + + ret =3D mipi_dsi_dcs_set_pixel_format(dsi, format); + if (ret < 0) { + ctx->accum_err =3D ret; + dev_err(dev, "Failed to set pixel format: %d\n", + ctx->accum_err); + } +} +EXPORT_SYMBOL(mipi_dsi_dcs_set_pixel_format_multi); + +/** + * mipi_dsi_dcs_set_column_address_multi() - define the column extent of t= he + * frame memory accessed by the host processor + * @ctx: Context for multiple DSI transactions + * @start: first column of frame memory + * @end: last column of frame memory + * + * Like mipi_dsi_dcs_set_column_address() but deals with errors in a way t= hat + * makes it convenient to make several calls in a row. + */ +void mipi_dsi_dcs_set_column_address_multi(struct mipi_dsi_multi_context *= ctx, + u16 start, u16 end) +{ + struct mipi_dsi_device *dsi =3D ctx->dsi; + struct device *dev =3D &dsi->dev; + ssize_t ret; + + if (ctx->accum_err) + return; + + ret =3D mipi_dsi_dcs_set_column_address(dsi, start, end); + if (ret < 0) { + ctx->accum_err =3D ret; + dev_err(dev, "Failed to set column address: %d\n", + ctx->accum_err); + } +} +EXPORT_SYMBOL(mipi_dsi_dcs_set_column_address_multi); + +/** + * mipi_dsi_dcs_set_page_address_multi() - define the column extent of the + * frame memory accessed by the host processor + * @ctx: Context for multiple DSI transactions + * @start: first column of frame memory + * @end: last column of frame memory + * + * Like mipi_dsi_dcs_set_page_address() but deals with errors in a way that + * makes it convenient to make several calls in a row. + */ +void mipi_dsi_dcs_set_page_address_multi(struct mipi_dsi_multi_context *ct= x, + u16 start, u16 end) +{ + struct mipi_dsi_device *dsi =3D ctx->dsi; + struct device *dev =3D &dsi->dev; + ssize_t ret; + + if (ctx->accum_err) + return; + + ret =3D mipi_dsi_dcs_set_page_address(dsi, start, end); + if (ret < 0) { + ctx->accum_err =3D ret; + dev_err(dev, "Failed to set page address: %d\n", + ctx->accum_err); + } +} +EXPORT_SYMBOL(mipi_dsi_dcs_set_page_address_multi); + static int mipi_dsi_drv_probe(struct device *dev) { struct mipi_dsi_driver *drv =3D to_mipi_dsi_driver(dev->driver); diff --git a/include/drm/drm_mipi_dsi.h b/include/drm/drm_mipi_dsi.h index 71d121aeef24..203b5d53d58f 100644 --- a/include/drm/drm_mipi_dsi.h +++ b/include/drm/drm_mipi_dsi.h @@ -358,6 +358,16 @@ void mipi_dsi_dcs_set_display_off_multi(struct mipi_ds= i_multi_context *ctx); void mipi_dsi_dcs_set_display_on_multi(struct mipi_dsi_multi_context *ctx); void mipi_dsi_dcs_set_tear_on_multi(struct mipi_dsi_multi_context *ctx, enum mipi_dsi_dcs_tear_mode mode); +void mipi_dsi_turn_on_peripheral_multi(struct mipi_dsi_multi_context *ctx); +void mipi_dsi_dcs_soft_reset_multi(struct mipi_dsi_multi_context *ctx); +void mipi_dsi_dcs_set_display_brightness_multi(struct mipi_dsi_multi_conte= xt *ctx, + u16 brightness); +void mipi_dsi_dcs_set_pixel_format_multi(struct mipi_dsi_multi_context *ct= x, + u8 format); +void mipi_dsi_dcs_set_column_address_multi(struct mipi_dsi_multi_context *= ctx, + u16 start, u16 end); +void mipi_dsi_dcs_set_page_address_multi(struct mipi_dsi_multi_context *ct= x, + u16 start, u16 end); =20 /** * mipi_dsi_generic_write_seq - transmit data using a generic write packet --=20 2.45.2 From nobody Sun Feb 8 00:12:06 2026 Received: from mail-pl1-f175.google.com (mail-pl1-f175.google.com [209.85.214.175]) (using TLSv1.2 with cipher ECDHE-RSA-AES128-GCM-SHA256 (128/128 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id E0AD11CE092 for ; 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Fri, 28 Jun 2024 11:25:19 -0700 (PDT) Received: from distilledx.localdomain ([122.172.84.231]) by smtp.gmail.com with ESMTPSA id d9443c01a7336-1fac10e21aesm18557465ad.64.2024.06.28.11.25.16 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Fri, 28 Jun 2024 11:25:18 -0700 (PDT) From: Tejas Vipin To: neil.armstrong@linaro.org, quic_jesszhan@quicinc.com Cc: dianders@chromium.org, maarten.lankhorst@linux.intel.com, mripard@kernel.org, tzimmermann@suse.de, airlied@gmail.com, daniel@ffwll.ch, dri-devel@lists.freedesktop.org, linux-kernel@vger.kernel.org, Tejas Vipin Subject: [PATCH 2/2] drm/panel: startek-kd070fhfid015: transition to mipi_dsi wrapped functions Date: Fri, 28 Jun 2024 23:54:28 +0530 Message-ID: <20240628182428.171031-3-tejasvipin76@gmail.com> X-Mailer: git-send-email 2.45.2 In-Reply-To: <20240628182428.171031-1-tejasvipin76@gmail.com> References: <20240628182428.171031-1-tejasvipin76@gmail.com> Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: quoted-printable Content-Type: text/plain; charset="utf-8" Use multi style wrapped functions for mipi_dsi in the startek-kd070fhfid015 panel. Signed-off-by: Tejas Vipin --- .../drm/panel/panel-startek-kd070fhfid015.c | 107 ++++++------------ 1 file changed, 35 insertions(+), 72 deletions(-) diff --git a/drivers/gpu/drm/panel/panel-startek-kd070fhfid015.c b/drivers/= gpu/drm/panel/panel-startek-kd070fhfid015.c index 0156689f41cd..d58c81c43724 100644 --- a/drivers/gpu/drm/panel/panel-startek-kd070fhfid015.c +++ b/drivers/gpu/drm/panel/panel-startek-kd070fhfid015.c @@ -52,92 +52,63 @@ static inline struct stk_panel *to_stk_panel(struct drm= _panel *panel) static int stk_panel_init(struct stk_panel *stk) { struct mipi_dsi_device *dsi =3D stk->dsi; - struct device *dev =3D &stk->dsi->dev; - int ret; + struct mipi_dsi_multi_context dsi_ctx =3D {.dsi =3D dsi}; =20 - ret =3D mipi_dsi_dcs_soft_reset(dsi); - if (ret < 0) { - dev_err(dev, "failed to mipi_dsi_dcs_soft_reset: %d\n", ret); - return ret; - } - mdelay(5); + mipi_dsi_dcs_soft_reset_multi(&dsi_ctx); =20 - ret =3D mipi_dsi_dcs_exit_sleep_mode(dsi); - if (ret < 0) { - dev_err(dev, "failed to set exit sleep mode: %d\n", ret); - return ret; - } - msleep(120); + if (!dsi_ctx.accum_err) + mdelay(5); + + mipi_dsi_dcs_exit_sleep_mode_multi(&dsi_ctx); =20 - mipi_dsi_generic_write_seq(dsi, DSI_REG_MCAP, 0x04); + mipi_dsi_msleep(&dsi_ctx, 120); + + mipi_dsi_generic_write_seq_multi(&dsi_ctx, DSI_REG_MCAP, 0x04); =20 /* Interface setting, video mode */ - mipi_dsi_generic_write_seq(dsi, DSI_REG_IS, 0x14, 0x08, 0x00, 0x22, 0x00); - mipi_dsi_generic_write_seq(dsi, DSI_REG_IIS, 0x0C, 0x00); - mipi_dsi_generic_write_seq(dsi, DSI_REG_CTRL, 0x3A, 0xD3); + mipi_dsi_generic_write_seq_multi(&dsi_ctx, DSI_REG_IS, 0x14, 0x08, 0x00, = 0x22, 0x00); + mipi_dsi_generic_write_seq_multi(&dsi_ctx, DSI_REG_IIS, 0x0C, 0x00); + mipi_dsi_generic_write_seq_multi(&dsi_ctx, DSI_REG_CTRL, 0x3A, 0xD3); =20 - ret =3D mipi_dsi_dcs_set_display_brightness(dsi, 0x77); - if (ret < 0) { - dev_err(dev, "failed to write display brightness: %d\n", ret); - return ret; - } + mipi_dsi_dcs_set_display_brightness_multi(&dsi_ctx, 0x77); =20 - mipi_dsi_dcs_write_seq(dsi, MIPI_DCS_WRITE_CONTROL_DISPLAY, - MIPI_DCS_WRITE_MEMORY_START); + mipi_dsi_dcs_write_seq_multi(&dsi_ctx, MIPI_DCS_WRITE_CONTROL_DISPLAY, + MIPI_DCS_WRITE_MEMORY_START); =20 - ret =3D mipi_dsi_dcs_set_pixel_format(dsi, 0x77); - if (ret < 0) { - dev_err(dev, "failed to set pixel format: %d\n", ret); - return ret; - } + mipi_dsi_dcs_set_pixel_format_multi(&dsi_ctx, 0x77); =20 - ret =3D mipi_dsi_dcs_set_column_address(dsi, 0, stk->mode->hdisplay - 1); - if (ret < 0) { - dev_err(dev, "failed to set column address: %d\n", ret); - return ret; - } + mipi_dsi_dcs_set_column_address_multi(&dsi_ctx, 0, stk->mode->hdisplay - = 1); =20 - ret =3D mipi_dsi_dcs_set_page_address(dsi, 0, stk->mode->vdisplay - 1); - if (ret < 0) { - dev_err(dev, "failed to set page address: %d\n", ret); - return ret; - } + mipi_dsi_dcs_set_page_address_multi(&dsi_ctx, 0, stk->mode->vdisplay - 1); =20 - return 0; + return dsi_ctx.accum_err; } =20 static int stk_panel_on(struct stk_panel *stk) { struct mipi_dsi_device *dsi =3D stk->dsi; - struct device *dev =3D &stk->dsi->dev; - int ret; + struct mipi_dsi_multi_context dsi_ctx =3D {.dsi =3D dsi}; =20 - ret =3D mipi_dsi_dcs_set_display_on(dsi); - if (ret < 0) - dev_err(dev, "failed to set display on: %d\n", ret); + mipi_dsi_dcs_set_display_on_multi(&dsi_ctx); =20 - mdelay(20); + if (!dsi_ctx.accum_err) + mdelay(20); =20 - return ret; + return dsi_ctx.accum_err; } =20 static void stk_panel_off(struct stk_panel *stk) { struct mipi_dsi_device *dsi =3D stk->dsi; - struct device *dev =3D &stk->dsi->dev; - int ret; + struct mipi_dsi_multi_context dsi_ctx =3D {.dsi =3D dsi}; =20 dsi->mode_flags &=3D ~MIPI_DSI_MODE_LPM; =20 - ret =3D mipi_dsi_dcs_set_display_off(dsi); - if (ret < 0) - dev_err(dev, "failed to set display off: %d\n", ret); + mipi_dsi_dcs_set_display_off_multi(&dsi_ctx); =20 - ret =3D mipi_dsi_dcs_enter_sleep_mode(dsi); - if (ret < 0) - dev_err(dev, "failed to enter sleep mode: %d\n", ret); + mipi_dsi_dcs_enter_sleep_mode_multi(&dsi_ctx); =20 - msleep(100); + mipi_dsi_msleep(&dsi_ctx, 100); } =20 static int stk_panel_unprepare(struct drm_panel *panel) @@ -155,7 +126,6 @@ static int stk_panel_unprepare(struct drm_panel *panel) static int stk_panel_prepare(struct drm_panel *panel) { struct stk_panel *stk =3D to_stk_panel(panel); - struct device *dev =3D &stk->dsi->dev; int ret; =20 gpiod_set_value(stk->reset_gpio, 0); @@ -175,16 +145,12 @@ static int stk_panel_prepare(struct drm_panel *panel) gpiod_set_value(stk->reset_gpio, 1); mdelay(10); ret =3D stk_panel_init(stk); - if (ret < 0) { - dev_err(dev, "failed to init panel: %d\n", ret); + if (ret < 0) goto poweroff; - } =20 ret =3D stk_panel_on(stk); - if (ret < 0) { - dev_err(dev, "failed to set panel on: %d\n", ret); + if (ret < 0) goto poweroff; - } =20 return 0; =20 @@ -250,18 +216,15 @@ static int dsi_dcs_bl_get_brightness(struct backlight= _device *bl) static int dsi_dcs_bl_update_status(struct backlight_device *bl) { struct mipi_dsi_device *dsi =3D bl_get_data(bl); - struct device *dev =3D &dsi->dev; - int ret; + struct mipi_dsi_multi_context dsi_ctx =3D {.dsi =3D dsi}; =20 dsi->mode_flags &=3D ~MIPI_DSI_MODE_LPM; - ret =3D mipi_dsi_dcs_set_display_brightness(dsi, bl->props.brightness); - if (ret < 0) { - dev_err(dev, "failed to set DSI control: %d\n", ret); - return ret; - } + mipi_dsi_dcs_set_display_brightness_multi(&dsi_ctx, bl->props.brightness); + if (dsi_ctx.accum_err) + return dsi_ctx.accum_err; =20 dsi->mode_flags |=3D MIPI_DSI_MODE_LPM; - return 0; + return dsi_ctx.accum_err; } =20 static const struct backlight_ops dsi_bl_ops =3D { --=20 2.45.2