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[178.235.177.23]) by smtp.gmail.com with ESMTPSA id md1-20020a170906ae8100b009ad8acac02asm9369335ejb.172.2023.09.27.06.19.07 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Wed, 27 Sep 2023 06:19:08 -0700 (PDT) From: Konrad Dybcio Date: Wed, 27 Sep 2023 15:19:01 +0200 Subject: [PATCH 1/2] dt-bindings: display: panel: Add Raydium RM692E5 MIME-Version: 1.0 Message-Id: <20230927-topic-fp5_disp-v1-1-a6aabd68199f@linaro.org> References: <20230927-topic-fp5_disp-v1-0-a6aabd68199f@linaro.org> In-Reply-To: <20230927-topic-fp5_disp-v1-0-a6aabd68199f@linaro.org> To: Neil Armstrong , Jessica Zhang , Sam Ravnborg , David Airlie , Daniel Vetter , Rob Herring , Krzysztof Kozlowski , Conor Dooley , Konrad Dybcio Cc: Marijn Suijten , dri-devel@lists.freedesktop.org, devicetree@vger.kernel.org, linux-kernel@vger.kernel.org, Konrad Dybcio X-Mailer: b4 0.12.2 X-Developer-Signature: v=1; a=ed25519-sha256; t=1695820745; l=2205; i=konrad.dybcio@linaro.org; s=20230215; h=from:subject:message-id; bh=mQ6RVBqfnjkn7k7aw7JAtC6ys5lPho9IhAiB1YQIk6E=; b=P4qdwJsc/KL+8ZdQDXzOqavmia7ll3W6F+OJdDtWHAA5HfWnWtzK6DjXPgWYNLrwtvR2bgqea wUZSOt56u7jBGRX97M8h0hv9/gVhP2s2sODl655ohBXY/dhtHJoqQxf X-Developer-Key: i=konrad.dybcio@linaro.org; a=ed25519; pk=iclgkYvtl2w05SSXO5EjjSYlhFKsJ+5OSZBjOkQuEms= X-Spam-Status: No, score=-0.9 required=5.0 tests=DKIM_SIGNED,DKIM_VALID, DKIM_VALID_AU,HEADER_FROM_DIFFERENT_DOMAINS,MAILING_LIST_MULTI, SPF_HELO_NONE,SPF_PASS autolearn=unavailable autolearn_force=no version=3.4.6 X-Spam-Checker-Version: SpamAssassin 3.4.6 (2021-04-09) on agentk.vger.email Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org X-Greylist: Sender passed SPF test, not delayed by milter-greylist-4.6.4 (agentk.vger.email [0.0.0.0]); Wed, 27 Sep 2023 06:19:41 -0700 (PDT) X-getmail-retrieved-from-mailbox: INBOX X-GMAIL-THRID: 1778201576682922705 X-GMAIL-MSGID: 1778201576682922705 Raydium RM692E5 is a display driver IC used to drive AMOLED DSI panels. Describe it. Signed-off-by: Konrad Dybcio Reviewed-by: Conor Dooley --- .../bindings/display/panel/raydium,rm692e5.yaml | 73 ++++++++++++++++++++++ 1 file changed, 73 insertions(+) diff --git a/Documentation/devicetree/bindings/display/panel/raydium,rm692e5.yaml b/Documentation/devicetree/bindings/display/panel/raydium,rm692e5.yaml new file mode 100644 index 000000000000..423a85616c1c --- /dev/null +++ b/Documentation/devicetree/bindings/display/panel/raydium,rm692e5.yaml @@ -0,0 +1,73 @@ +# SPDX-License-Identifier: GPL-2.0-only OR BSD-2-Clause +%YAML 1.2 +--- +$id: http://devicetree.org/schemas/display/panel/raydium,rm692e5.yaml# +$schema: http://devicetree.org/meta-schemas/core.yaml# + +title: Raydium RM692E5 based DSI display Panels + +maintainers: + - Konrad Dybcio + +description: | + The Raydium RM692E5 is a generic DSI Panel IC used to control + AMOLED panels. + +allOf: + - $ref: panel-common.yaml# + +properties: + compatible: + items: + - const: fairphone,fp5-rm692e5-boe + - const: raydium,rm692e5 + + dvdd-supply: + description: Digital voltage rail + + vci-supply: + description: Analog voltage rail + + vddio-supply: + description: I/O voltage rail + + reg: true + port: true + +required: + - compatible + - reg + - reset-gpios + - dvdd-supply + - vci-supply + - vddio-supply + - port + +unevaluatedProperties: false + +examples: + - | + #include + + dsi { + #address-cells = <1>; + #size-cells = <0>; + + panel@0 { + compatible = "fairphone,fp5-rm692e5-boe", "raydium,rm692e5"; + reg = <0>; + + reset-gpios = <&tlmm 44 GPIO_ACTIVE_LOW>; + dvdd-supply = <&vreg_oled_vci>; + vci-supply = <&vreg_l12c>; + vddio-supply = <&vreg_oled_dvdd>; + + port { + panel_in_0: endpoint { + remote-endpoint = <&dsi0_out>; + }; + }; + }; + }; + +... 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[178.235.177.23]) by smtp.gmail.com with ESMTPSA id md1-20020a170906ae8100b009ad8acac02asm9369335ejb.172.2023.09.27.06.19.09 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Wed, 27 Sep 2023 06:19:10 -0700 (PDT) From: Konrad Dybcio Date: Wed, 27 Sep 2023 15:19:02 +0200 Subject: [PATCH 2/2] drm/panel: Add driver for BOE RM692E5 AMOLED panel MIME-Version: 1.0 Message-Id: <20230927-topic-fp5_disp-v1-2-a6aabd68199f@linaro.org> References: <20230927-topic-fp5_disp-v1-0-a6aabd68199f@linaro.org> In-Reply-To: <20230927-topic-fp5_disp-v1-0-a6aabd68199f@linaro.org> To: Neil Armstrong , Jessica Zhang , Sam Ravnborg , David Airlie , Daniel Vetter , Rob Herring , Krzysztof Kozlowski , Conor Dooley , Konrad Dybcio Cc: Marijn Suijten , dri-devel@lists.freedesktop.org, devicetree@vger.kernel.org, linux-kernel@vger.kernel.org, Konrad Dybcio , Luca Weiss X-Mailer: b4 0.12.2 X-Developer-Signature: v=1; a=ed25519-sha256; t=1695820745; l=16818; i=konrad.dybcio@linaro.org; s=20230215; h=from:subject:message-id; bh=EZCWrPQwyxYcpOUam7cre/hNnr3irXk4EJ6g5JvZlaY=; b=fKxz1JdG+pTIvcR0HO4XIcrckuXzR+9UdfwNJQp1uHOlTlWqx64GZVGno4L7yHTQ8v7WY9gJm dvsHWajI/ikBeNTmlPjfEnnCNODt/B16P2QXhkehncRMX1kEWa//KO/ X-Developer-Key: i=konrad.dybcio@linaro.org; a=ed25519; pk=iclgkYvtl2w05SSXO5EjjSYlhFKsJ+5OSZBjOkQuEms= X-Spam-Status: No, score=-0.9 required=5.0 tests=DKIM_SIGNED,DKIM_VALID, DKIM_VALID_AU,HEADER_FROM_DIFFERENT_DOMAINS,MAILING_LIST_MULTI, SPF_HELO_NONE,SPF_PASS autolearn=unavailable autolearn_force=no version=3.4.6 X-Spam-Checker-Version: SpamAssassin 3.4.6 (2021-04-09) on groat.vger.email Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org X-Greylist: Sender passed SPF test, not delayed by milter-greylist-4.6.4 (groat.vger.email [0.0.0.0]); Wed, 27 Sep 2023 06:19:59 -0700 (PDT) X-getmail-retrieved-from-mailbox: INBOX X-GMAIL-THRID: 1778208557400194780 X-GMAIL-MSGID: 1778208557400194780 Add support for the 2700x1224 AMOLED BOE panel bundled with a RM692E5 driver IC, as found on the Fairphone 5 smartphone. Co-developed-by: Luca Weiss Signed-off-by: Luca Weiss Signed-off-by: Konrad Dybcio --- drivers/gpu/drm/panel/Kconfig | 9 + drivers/gpu/drm/panel/Makefile | 1 + drivers/gpu/drm/panel/panel-raydium-rm692e5.c | 496 ++++++++++++++++++++++++++ 3 files changed, 506 insertions(+) diff --git a/drivers/gpu/drm/panel/Kconfig b/drivers/gpu/drm/panel/Kconfig index 2d6d96ee3547..ecb22ea326cb 100644 --- a/drivers/gpu/drm/panel/Kconfig +++ b/drivers/gpu/drm/panel/Kconfig @@ -516,6 +516,15 @@ config DRM_PANEL_RAYDIUM_RM68200 Say Y here if you want to enable support for Raydium RM68200 720x1280 DSI video mode panel. +config DRM_PANEL_RAYDIUM_RM692E5 + tristate "Raydium RM692E5-based DSI panel" + depends on OF + depends on DRM_MIPI_DSI + depends on BACKLIGHT_CLASS_DEVICE + help + Say Y here if you want to enable support for Raydium RM692E5-based + display panels, such as the one found in the Fairphone 5 smartphone. + config DRM_PANEL_RONBO_RB070D30 tristate "Ronbo Electronics RB070D30 panel" depends on OF diff --git a/drivers/gpu/drm/panel/Makefile b/drivers/gpu/drm/panel/Makefile index 157c77ff157f..e14ce55a0875 100644 --- a/drivers/gpu/drm/panel/Makefile +++ b/drivers/gpu/drm/panel/Makefile @@ -49,6 +49,7 @@ obj-$(CONFIG_DRM_PANEL_PANASONIC_VVX10F034N00) += panel-panasonic-vvx10f034n00.o obj-$(CONFIG_DRM_PANEL_RASPBERRYPI_TOUCHSCREEN) += panel-raspberrypi-touchscreen.o obj-$(CONFIG_DRM_PANEL_RAYDIUM_RM67191) += panel-raydium-rm67191.o obj-$(CONFIG_DRM_PANEL_RAYDIUM_RM68200) += panel-raydium-rm68200.o +obj-$(CONFIG_DRM_PANEL_RAYDIUM_RM692E5) += panel-raydium-rm692e5.o obj-$(CONFIG_DRM_PANEL_RONBO_RB070D30) += panel-ronbo-rb070d30.o obj-$(CONFIG_DRM_PANEL_SAMSUNG_ATNA33XC20) += panel-samsung-atna33xc20.o obj-$(CONFIG_DRM_PANEL_SAMSUNG_DB7430) += panel-samsung-db7430.o diff --git a/drivers/gpu/drm/panel/panel-raydium-rm692e5.c b/drivers/gpu/drm/panel/panel-raydium-rm692e5.c new file mode 100644 index 000000000000..bd753d1b12dd --- /dev/null +++ b/drivers/gpu/drm/panel/panel-raydium-rm692e5.c @@ -0,0 +1,496 @@ +// SPDX-License-Identifier: GPL-2.0-only +/* + * Generated with linux-mdss-dsi-panel-driver-generator from vendor device tree. + * Copyright (c) 2023 Linaro Limited + */ + +#include +#include +#include +#include +#include +#include + +#include +#include +#include +#include +#include + +struct rm692e5_panel { + struct drm_panel panel; + struct mipi_dsi_device *dsi; + struct drm_dsc_config dsc; + struct regulator_bulk_data supplies[3]; + struct gpio_desc *reset_gpio; + bool prepared; +}; + +static inline struct rm692e5_panel *to_rm692e5_panel(struct drm_panel *panel) +{ + return container_of(panel, struct rm692e5_panel, panel); +} + +static void rm692e5_reset(struct rm692e5_panel *ctx) +{ + gpiod_set_value_cansleep(ctx->reset_gpio, 0); + usleep_range(10000, 11000); + gpiod_set_value_cansleep(ctx->reset_gpio, 1); + usleep_range(5000, 6000); + gpiod_set_value_cansleep(ctx->reset_gpio, 0); + usleep_range(10000, 11000); +} + +static int rm692e5_on(struct rm692e5_panel *ctx) +{ + struct mipi_dsi_device *dsi = ctx->dsi; + struct device *dev = &dsi->dev; + int ret; + + dsi->mode_flags |= MIPI_DSI_MODE_LPM; + + mipi_dsi_generic_write_seq(dsi, 0xfe, 0x41); + usleep_range(1000, 2000); + mipi_dsi_generic_write_seq(dsi, 0xd6, 0x00); + usleep_range(1000, 2000); + mipi_dsi_generic_write_seq(dsi, 0xfe, 0x16); + usleep_range(1000, 2000); + mipi_dsi_generic_write_seq(dsi, 0x8a, 0x87); + usleep_range(1000, 2000); + mipi_dsi_generic_write_seq(dsi, 0xfe, 0x71); + usleep_range(1000, 2000); + mipi_dsi_generic_write_seq(dsi, 0x82, 0x01); + usleep_range(1000, 2000); + mipi_dsi_generic_write_seq(dsi, 0xc6, 0x00); + usleep_range(1000, 2000); + mipi_dsi_generic_write_seq(dsi, 0xc7, 0x2c); + usleep_range(1000, 2000); + mipi_dsi_generic_write_seq(dsi, 0xc8, 0x64); + usleep_range(1000, 2000); + mipi_dsi_generic_write_seq(dsi, 0xc9, 0x3c); + usleep_range(1000, 2000); + mipi_dsi_generic_write_seq(dsi, 0xca, 0x80); + usleep_range(1000, 2000); + mipi_dsi_generic_write_seq(dsi, 0xcb, 0x02); + usleep_range(1000, 2000); + mipi_dsi_generic_write_seq(dsi, 0xcc, 0x02); + usleep_range(1000, 2000); + mipi_dsi_generic_write_seq(dsi, 0xfe, 0x38); + usleep_range(1000, 2000); + mipi_dsi_generic_write_seq(dsi, 0x18, 0x13); + usleep_range(1000, 2000); + mipi_dsi_generic_write_seq(dsi, 0xfe, 0xf4); + usleep_range(1000, 2000); + mipi_dsi_generic_write_seq(dsi, 0x00, 0xff); + usleep_range(1000, 2000); + mipi_dsi_generic_write_seq(dsi, 0x01, 0xff); + usleep_range(1000, 2000); + mipi_dsi_generic_write_seq(dsi, 0x02, 0xcf); + usleep_range(1000, 2000); + mipi_dsi_generic_write_seq(dsi, 0x03, 0xbc); + usleep_range(1000, 2000); + mipi_dsi_generic_write_seq(dsi, 0x04, 0xb9); + usleep_range(1000, 2000); + mipi_dsi_generic_write_seq(dsi, 0x05, 0x99); + usleep_range(1000, 2000); + mipi_dsi_generic_write_seq(dsi, 0x06, 0x02); + usleep_range(1000, 2000); + mipi_dsi_generic_write_seq(dsi, 0x07, 0x0a); + usleep_range(1000, 2000); + mipi_dsi_generic_write_seq(dsi, 0x08, 0xe0); + usleep_range(1000, 2000); + mipi_dsi_generic_write_seq(dsi, 0x09, 0x4c); + usleep_range(1000, 2000); + mipi_dsi_generic_write_seq(dsi, 0x0a, 0xeb); + usleep_range(1000, 2000); + mipi_dsi_generic_write_seq(dsi, 0x0b, 0xe8); + usleep_range(1000, 2000); + mipi_dsi_generic_write_seq(dsi, 0x0c, 0x32); + usleep_range(1000, 2000); + mipi_dsi_generic_write_seq(dsi, 0x0d, 0x07); + usleep_range(1000, 2000); + mipi_dsi_generic_write_seq(dsi, 0xfe, 0xf4); + usleep_range(1000, 2000); + mipi_dsi_generic_write_seq(dsi, 0x0d, 0xc0); + usleep_range(1000, 2000); + mipi_dsi_generic_write_seq(dsi, 0x0e, 0xff); + usleep_range(1000, 2000); + mipi_dsi_generic_write_seq(dsi, 0x0f, 0xff); + usleep_range(1000, 2000); + mipi_dsi_generic_write_seq(dsi, 0x10, 0x33); + usleep_range(1000, 2000); + mipi_dsi_generic_write_seq(dsi, 0x11, 0x6f); + usleep_range(1000, 2000); + mipi_dsi_generic_write_seq(dsi, 0x12, 0x6e); + usleep_range(1000, 2000); + mipi_dsi_generic_write_seq(dsi, 0x13, 0xa6); + usleep_range(1000, 2000); + mipi_dsi_generic_write_seq(dsi, 0x14, 0x80); + usleep_range(1000, 2000); + mipi_dsi_generic_write_seq(dsi, 0x15, 0x02); + usleep_range(1000, 2000); + mipi_dsi_generic_write_seq(dsi, 0x16, 0x38); + usleep_range(1000, 2000); + mipi_dsi_generic_write_seq(dsi, 0x17, 0xd3); + usleep_range(1000, 2000); + mipi_dsi_generic_write_seq(dsi, 0x18, 0x3a); + usleep_range(1000, 2000); + mipi_dsi_generic_write_seq(dsi, 0x19, 0xba); + usleep_range(1000, 2000); + mipi_dsi_generic_write_seq(dsi, 0x1a, 0xcc); + usleep_range(1000, 2000); + mipi_dsi_generic_write_seq(dsi, 0x1b, 0x01); + usleep_range(1000, 2000); + + ret = mipi_dsi_dcs_nop(dsi); + if (ret < 0) { + dev_err(dev, "Failed to nop: %d\n", ret); + return ret; + } + msleep(32); + + mipi_dsi_generic_write_seq(dsi, 0xfe, 0x38); + usleep_range(1000, 2000); + mipi_dsi_generic_write_seq(dsi, 0x18, 0x13); + usleep_range(1000, 2000); + mipi_dsi_generic_write_seq(dsi, 0xfe, 0xd1); + usleep_range(1000, 2000); + mipi_dsi_generic_write_seq(dsi, 0xd3, 0x00); + usleep_range(1000, 2000); + mipi_dsi_generic_write_seq(dsi, 0xd0, 0x00); + usleep_range(1000, 2000); + mipi_dsi_generic_write_seq(dsi, 0xd2, 0x00); + usleep_range(1000, 2000); + mipi_dsi_generic_write_seq(dsi, 0xd4, 0x00); + usleep_range(1000, 2000); + mipi_dsi_generic_write_seq(dsi, 0xb4, 0x01); + usleep_range(1000, 2000); + mipi_dsi_generic_write_seq(dsi, 0xfe, 0xf9); + usleep_range(1000, 2000); + mipi_dsi_generic_write_seq(dsi, 0x00, 0xaf); + usleep_range(1000, 2000); + mipi_dsi_generic_write_seq(dsi, 0x1d, 0x37); + usleep_range(1000, 2000); + mipi_dsi_generic_write_seq(dsi, 0x44, 0x0a, 0x7b); + mipi_dsi_generic_write_seq(dsi, 0xfe, 0x00); + usleep_range(1000, 2000); + mipi_dsi_generic_write_seq(dsi, 0xfa, 0x01); + usleep_range(1000, 2000); + mipi_dsi_generic_write_seq(dsi, 0xc2, 0x08); + usleep_range(1000, 2000); + mipi_dsi_generic_write_seq(dsi, 0x35, 0x00); + usleep_range(1000, 2000); + mipi_dsi_generic_write_seq(dsi, 0x51, 0x05, 0x42); + usleep_range(1000, 2000); + + ret = mipi_dsi_dcs_exit_sleep_mode(dsi); + if (ret < 0) { + dev_err(dev, "Failed to exit sleep mode: %d\n", ret); + return ret; + } + msleep(100); + + ret = mipi_dsi_dcs_set_display_on(dsi); + if (ret < 0) { + dev_err(dev, "Failed to set display on: %d\n", ret); + return ret; + } + usleep_range(1000, 2000); + + return 0; +} + +static int rm692e5_off(struct rm692e5_panel *ctx) +{ + struct mipi_dsi_device *dsi = ctx->dsi; + struct device *dev = &dsi->dev; + int ret; + + dsi->mode_flags &= ~MIPI_DSI_MODE_LPM; + + mipi_dsi_generic_write_seq(dsi, 0xfe, 0x00); + usleep_range(1000, 2000); + + ret = mipi_dsi_dcs_set_display_off(dsi); + if (ret < 0) { + dev_err(dev, "Failed to set display off: %d\n", ret); + return ret; + } + usleep_range(1000, 2000); + + ret = mipi_dsi_dcs_enter_sleep_mode(dsi); + if (ret < 0) { + dev_err(dev, "Failed to enter sleep mode: %d\n", ret); + return ret; + } + msleep(100); + + return 0; +} + +static int rm692e5_prepare(struct drm_panel *panel) +{ + struct rm692e5_panel *ctx = to_rm692e5_panel(panel); + struct drm_dsc_picture_parameter_set pps; + struct device *dev = &ctx->dsi->dev; + int ret; + + if (ctx->prepared) + return 0; + + ret = regulator_bulk_enable(ARRAY_SIZE(ctx->supplies), ctx->supplies); + if (ret < 0) { + dev_err(dev, "Failed to enable regulators: %d\n", ret); + return ret; + } + + rm692e5_reset(ctx); + + ret = rm692e5_on(ctx); + if (ret < 0) { + dev_err(dev, "Failed to initialize panel: %d\n", ret); + gpiod_set_value_cansleep(ctx->reset_gpio, 1); + regulator_bulk_disable(ARRAY_SIZE(ctx->supplies), ctx->supplies); + return ret; + } + + drm_dsc_pps_payload_pack(&pps, &ctx->dsc); + + ret = mipi_dsi_picture_parameter_set(ctx->dsi, &pps); + if (ret < 0) { + dev_err(panel->dev, "failed to transmit PPS: %d\n", ret); + return ret; + } + + ret = mipi_dsi_compression_mode(ctx->dsi, true); + if (ret < 0) { + dev_err(dev, "failed to enable compression mode: %d\n", ret); + return ret; + } + + msleep(28); + + mipi_dsi_generic_write_seq(ctx->dsi, 0xfe, 0x40); + usleep_range(1000, 2000); + + /* 0x05 -> 90Hz, 0x00 -> 60Hz */ + mipi_dsi_generic_write_seq(ctx->dsi, 0xbd, 0x05); + usleep_range(1000, 2000); + + mipi_dsi_generic_write_seq(ctx->dsi, 0xfe, 0x00); + usleep_range(1000, 2000); + + ctx->prepared = true; + + return 0; +} + +static int rm692e5_unprepare(struct drm_panel *panel) +{ + struct rm692e5_panel *ctx = to_rm692e5_panel(panel); + struct device *dev = &ctx->dsi->dev; + int ret; + + if (!ctx->prepared) + return 0; + + ret = rm692e5_off(ctx); + if (ret < 0) + dev_err(dev, "Failed to un-initialize panel: %d\n", ret); + + gpiod_set_value_cansleep(ctx->reset_gpio, 1); + regulator_bulk_disable(ARRAY_SIZE(ctx->supplies), ctx->supplies); + + ctx->prepared = false; + return 0; +} + +static const struct drm_display_mode rm692e5_mode = { + .clock = (1224 + 32 + 8 + 8) * (2700 + 8 + 2 + 8) * 90 / 1000, + .hdisplay = 1224, + .hsync_start = 1224 + 32, + .hsync_end = 1224 + 32 + 8, + .htotal = 1224 + 32 + 8 + 8, + .vdisplay = 2700, + .vsync_start = 2700 + 8, + .vsync_end = 2700 + 8 + 2, + .vtotal = 2700 + 8 + 2 + 8, + .width_mm = 68, + .height_mm = 150, +}; + +static int rm692e5_get_modes(struct drm_panel *panel, + struct drm_connector *connector) +{ + struct drm_display_mode *mode; + + mode = drm_mode_duplicate(connector->dev, &rm692e5_mode); + if (!mode) + return -ENOMEM; + + drm_mode_set_name(mode); + + mode->type = DRM_MODE_TYPE_DRIVER | DRM_MODE_TYPE_PREFERRED; + connector->display_info.width_mm = mode->width_mm; + connector->display_info.height_mm = mode->height_mm; + drm_mode_probed_add(connector, mode); + + return 1; +} + +static const struct drm_panel_funcs rm692e5_panel_funcs = { + .prepare = rm692e5_prepare, + .unprepare = rm692e5_unprepare, + .get_modes = rm692e5_get_modes, +}; + +static int rm692e5_bl_update_status(struct backlight_device *bl) +{ + struct mipi_dsi_device *dsi = bl_get_data(bl); + u16 brightness = backlight_get_brightness(bl); + int ret; + + dsi->mode_flags &= ~MIPI_DSI_MODE_LPM; + + ret = mipi_dsi_dcs_set_display_brightness_large(dsi, brightness); + if (ret < 0) + return ret; + + dsi->mode_flags |= MIPI_DSI_MODE_LPM; + + return 0; +} + +static int rm692e5_bl_get_brightness(struct backlight_device *bl) +{ + struct mipi_dsi_device *dsi = bl_get_data(bl); + u16 brightness; + int ret; + + dsi->mode_flags &= ~MIPI_DSI_MODE_LPM; + + ret = mipi_dsi_dcs_get_display_brightness_large(dsi, &brightness); + if (ret < 0) + return ret; + + dsi->mode_flags |= MIPI_DSI_MODE_LPM; + + return brightness; +} + +static const struct backlight_ops rm692e5_bl_ops = { + .update_status = rm692e5_bl_update_status, + .get_brightness = rm692e5_bl_get_brightness, +}; + +static struct backlight_device * +rm692e5_create_backlight(struct mipi_dsi_device *dsi) +{ + struct device *dev = &dsi->dev; + const struct backlight_properties props = { + .type = BACKLIGHT_RAW, + .brightness = 4095, + .max_brightness = 4095, + }; + + return devm_backlight_device_register(dev, dev_name(dev), dev, dsi, + &rm692e5_bl_ops, &props); +} + +static int rm692e5_probe(struct mipi_dsi_device *dsi) +{ + struct device *dev = &dsi->dev; + struct rm692e5_panel *ctx; + int ret; + + ctx = devm_kzalloc(dev, sizeof(*ctx), GFP_KERNEL); + if (!ctx) + return -ENOMEM; + + ctx->supplies[0].supply = "vddio"; + ctx->supplies[1].supply = "dvdd"; + ctx->supplies[2].supply = "vci"; + ret = devm_regulator_bulk_get(dev, ARRAY_SIZE(ctx->supplies), + ctx->supplies); + if (ret < 0) + return dev_err_probe(dev, ret, "Failed to get regulators\n"); + + ctx->reset_gpio = devm_gpiod_get(dev, "reset", GPIOD_OUT_HIGH); + if (IS_ERR(ctx->reset_gpio)) + return dev_err_probe(dev, PTR_ERR(ctx->reset_gpio), + "Failed to get reset-gpios\n"); + + ctx->dsi = dsi; + mipi_dsi_set_drvdata(dsi, ctx); + + dsi->lanes = 4; + dsi->format = MIPI_DSI_FMT_RGB888; + dsi->mode_flags = MIPI_DSI_MODE_NO_EOT_PACKET | + MIPI_DSI_CLOCK_NON_CONTINUOUS; + + drm_panel_init(&ctx->panel, dev, &rm692e5_panel_funcs, + DRM_MODE_CONNECTOR_DSI); + ctx->panel.prepare_prev_first = true; + + ctx->panel.backlight = rm692e5_create_backlight(dsi); + if (IS_ERR(ctx->panel.backlight)) + return dev_err_probe(dev, PTR_ERR(ctx->panel.backlight), + "Failed to create backlight\n"); + + drm_panel_add(&ctx->panel); + + /* This panel only supports DSC; unconditionally enable it */ + dsi->dsc = &ctx->dsc; + + /* TODO: Pass slice_per_pkt = 2 */ + ctx->dsc.dsc_version_major = 1; + ctx->dsc.dsc_version_minor = 1; + ctx->dsc.slice_height = 60; + ctx->dsc.slice_width = 1224; + + WARN_ON(1224 % ctx->dsc.slice_width); + ctx->dsc.slice_count = 1224 / ctx->dsc.slice_width; + ctx->dsc.bits_per_component = 8; + ctx->dsc.bits_per_pixel = 8 << 4; /* 4 fractional bits */ + ctx->dsc.block_pred_enable = true; + + ret = mipi_dsi_attach(dsi); + if (ret < 0) { + dev_err(dev, "Failed to attach to DSI host: %d\n", ret); + drm_panel_remove(&ctx->panel); + return ret; + } + + return 0; +} + +static void rm692e5_remove(struct mipi_dsi_device *dsi) +{ + struct rm692e5_panel *ctx = mipi_dsi_get_drvdata(dsi); + int ret; + + ret = mipi_dsi_detach(dsi); + if (ret < 0) + dev_err(&dsi->dev, "Failed to detach from DSI host: %d\n", ret); + + drm_panel_remove(&ctx->panel); +} + +static const struct of_device_id rm692e5_of_match[] = { + { .compatible = "fairphone,fp5-rm692e5-boe" }, + { } +}; +MODULE_DEVICE_TABLE(of, rm692e5_of_match); + +static struct mipi_dsi_driver rm692e5_driver = { + .probe = rm692e5_probe, + .remove = rm692e5_remove, + .driver = { + .name = "panel-rm692e5-boe-amoled", + .of_match_table = rm692e5_of_match, + }, +}; +module_mipi_dsi_driver(rm692e5_driver); + +MODULE_DESCRIPTION("DRM driver for rm692e5-equipped DSI panels"); +MODULE_LICENSE("GPL");