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Tue, 03 Jun 2025 12:42:00 -0700 (PDT) From: Chris Morgan To: dri-devel@lists.freedesktop.org Cc: linux-rockchip@lists.infradead.org, devicetree@vger.kernel.org, sebastian.reichel@collabora.com, heiko@sntech.de, conor+dt@kernel.org, krzk+dt@kernel.org, robh@kernel.org, tzimmermann@suse.de, mripard@kernel.org, maarten.lankhorst@linux.intel.com, simona@ffwll.ch, airlied@gmail.com, quic_jesszhan@quicinc.com, neil.armstrong@linaro.org, javierm@redhat.com, megi@xff.cz, Chris Morgan Subject: [PATCH 3/4] drm/panel: himax-hx8394: Add Support for Huiling hl055fhav028c Date: Tue, 3 Jun 2025 14:39:29 -0500 Message-ID: <20250603193930.323607-4-macroalpha82@gmail.com> X-Mailer: git-send-email 2.43.0 In-Reply-To: <20250603193930.323607-1-macroalpha82@gmail.com> References: <20250603193930.323607-1-macroalpha82@gmail.com> Precedence: bulk X-Mailing-List: devicetree@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: 8bit From: Chris Morgan Add support for the Huiling hl055fhav028c panel as used on the Gameforce Ace handheld gaming console. This panel uses a Himax HX8399C display controller and requires a sparsely documented vendor provided init sequence. The display resolution is 1080x1920 and is 70mm by 127mm as stated in the manufacturer's documentation. Signed-off-by: Chris Morgan --- drivers/gpu/drm/panel/panel-himax-hx8394.c | 142 +++++++++++++++++++++ 1 file changed, 142 insertions(+) diff --git a/drivers/gpu/drm/panel/panel-himax-hx8394.c b/drivers/gpu/drm/panel/panel-himax-hx8394.c index ff994bf0e3cc..16e450b156b7 100644 --- a/drivers/gpu/drm/panel/panel-himax-hx8394.c +++ b/drivers/gpu/drm/panel/panel-himax-hx8394.c @@ -477,6 +477,147 @@ static const struct hx8394_panel_desc mchp_ac40t08a_desc = { .init_sequence = mchp_ac40t08a_init_sequence, }; +/* + * HL055FHAV028C is based on Himax HX8399, so datasheet pages are + * slightly different than HX8394 based panels. + */ +static void hl055fhav028c_init_sequence(struct mipi_dsi_multi_context *dsi_ctx) +{ + /* 6.3.6 SETEXTC: Set extension command (B9h) */ + mipi_dsi_dcs_write_seq_multi(dsi_ctx, HX8394_CMD_SETEXTC, + 0xff, 0x83, 0x99); + + /* 6.3.17 SETOFFSET: Set offset voltage (D2h) */ + mipi_dsi_dcs_write_seq_multi(dsi_ctx, HX8394_CMD_SETOFFSET, + 0x77); + + /* 6.3.1 SETPOWER: Set power (B1h) */ + mipi_dsi_dcs_write_seq_multi(dsi_ctx, HX8394_CMD_SETPOWER, + 0x02, 0x04, 0x74, 0x94, 0x01, 0x32, + 0x33, 0x11, 0x11, 0xab, 0x4d, 0x56, + 0x73, 0x02, 0x02); + + /* 6.3.2 SETDISP: Set display related register (B2h) */ + mipi_dsi_dcs_write_seq_multi(dsi_ctx, HX8394_CMD_SETDISP, + 0x00, 0x80, 0x80, 0xae, 0x05, 0x07, + 0x5a, 0x11, 0x00, 0x00, 0x10, 0x1e, + 0x70, 0x03, 0xd4); + + /* 6.3.3 SETCYC: Set display waveform cycles (B4h) */ + mipi_dsi_dcs_write_seq_multi(dsi_ctx, HX8394_CMD_SETCYC, + 0x00, 0xff, 0x02, 0xc0, 0x02, 0xc0, + 0x00, 0x00, 0x08, 0x00, 0x04, 0x06, + 0x00, 0x32, 0x04, 0x0a, 0x08, 0x21, + 0x03, 0x01, 0x00, 0x0f, 0xb8, 0x8b, + 0x02, 0xc0, 0x02, 0xc0, 0x00, 0x00, + 0x08, 0x00, 0x04, 0x06, 0x00, 0x32, + 0x04, 0x0a, 0x08, 0x01, 0x00, 0x0f, + 0xb8, 0x01); + + /* 6.3.18 SETGIP0: Set GIP Option0 (D3h) */ + mipi_dsi_dcs_write_seq_multi(dsi_ctx, HX8394_CMD_SETGIP0, + 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, + 0x06, 0x00, 0x00, 0x10, 0x04, 0x00, + 0x04, 0x00, 0x00, 0x00, 0x00, 0x00, + 0x00, 0x00, 0x00, 0x00, 0x00, 0x01, + 0x00, 0x05, 0x05, 0x07, 0x00, 0x00, + 0x00, 0x05, 0x40); + + /* 6.3.19 Set GIP Option1 (D5h) */ + mipi_dsi_dcs_write_seq_multi(dsi_ctx, HX8394_CMD_SETGIP1, + 0x18, 0x18, 0x19, 0x19, 0x18, 0x18, + 0x21, 0x20, 0x01, 0x00, 0x07, 0x06, + 0x05, 0x04, 0x03, 0x02, 0x18, 0x18, + 0x18, 0x18, 0x18, 0x18, 0x2f, 0x2f, + 0x30, 0x30, 0x31, 0x31, 0x18, 0x18, + 0x18, 0x18); + + /* 6.3.20 Set GIP Option2 (D6h) */ + mipi_dsi_dcs_write_seq_multi(dsi_ctx, HX8394_CMD_SETGIP2, + 0x18, 0x18, 0x19, 0x19, 0x40, 0x40, + 0x20, 0x21, 0x02, 0x03, 0x04, 0x05, + 0x06, 0x07, 0x00, 0x01, 0x40, 0x40, + 0x40, 0x40, 0x40, 0x40, 0x2f, 0x2f, + 0x30, 0x30, 0x31, 0x31, 0x40, 0x40, + 0x40, 0x40); + + /* 6.3.21 Set GIP Option3 (D8h) */ + mipi_dsi_dcs_write_seq_multi(dsi_ctx, HX8394_CMD_UNKNOWN4, + 0xa2, 0xaa, 0x02, 0xa0, 0xa2, 0xa8, + 0x02, 0xa0, 0xb0, 0x00, 0x00, 0x00, + 0xb0, 0x00, 0x00, 0x00); + + /* 6.3.9 Set register bank (BDh) */ + mipi_dsi_dcs_write_seq_multi(dsi_ctx, HX8394_CMD_SETREGBANK, + 0x01); + + /* 6.3.21 Set GIP Option3 (D8h) */ + mipi_dsi_dcs_write_seq_multi(dsi_ctx, HX8394_CMD_UNKNOWN4, + 0xb0, 0x00, 0x00, 0x00, 0xb0, 0x00, + 0x00, 0x00, 0xe2, 0xaa, 0x03, 0xf0, + 0xe2, 0xaa, 0x03, 0xf0); + + /* 6.3.9 Set register bank (BDh) */ + mipi_dsi_dcs_write_seq_multi(dsi_ctx, HX8394_CMD_SETREGBANK, + 0x02); + + /* 6.3.21 Set GIP Option3 (D8h) */ + mipi_dsi_dcs_write_seq_multi(dsi_ctx, HX8394_CMD_UNKNOWN4, + 0xe2, 0xaa, 0x03, 0xf0, 0xe2, 0xaa, + 0x03, 0xf0); + + /* 6.3.9 Set register bank (BDh) */ + mipi_dsi_dcs_write_seq_multi(dsi_ctx, HX8394_CMD_SETREGBANK, + 0x00); + + /* 6.3.4 SETVCOM: Set VCOM voltage (B6h) */ + mipi_dsi_dcs_write_seq_multi(dsi_ctx, HX8394_CMD_SETVCOM, + 0x7a, 0x7a); + + /* 6.3.26 SETGAMMA: Set gamma curve related setting (E0h) */ + mipi_dsi_dcs_write_seq_multi(dsi_ctx, HX8394_CMD_SETGAMMA, + 0x00, 0x18, 0x27, 0x24, 0x5a, 0x68, + 0x79, 0x78, 0x81, 0x8a, 0x92, 0x99, + 0x9e, 0xa7, 0xaf, 0xb4, 0xb9, 0xc3, + 0xc7, 0xd1, 0xc6, 0xd4, 0xd5, 0x6c, + 0x67, 0x71, 0x77, 0x00, 0x00, 0x18, + 0x27, 0x24, 0x5a, 0x68, 0x79, 0x78, + 0x81, 0x8a, 0x92, 0x99, 0x9e, 0xa7, + 0xaf, 0xb4, 0xb9, 0xc3, 0xc7, 0xd1, + 0xc6, 0xd4, 0xd5, 0x6c, 0x67, 0x77); + + /* Unknown command, not listed in the HX8399-C datasheet (C6h) */ + mipi_dsi_dcs_write_seq_multi(dsi_ctx, HX8394_CMD_UNKNOWN2, + 0xff, 0xf9); + + /* 6.3.16 SETPANEL (CCh) */ + mipi_dsi_dcs_write_seq_multi(dsi_ctx, HX8394_CMD_SETPANEL, + 0x08); +} + +static const struct drm_display_mode hl055fhav028c_mode = { + .hdisplay = 1080, + .hsync_start = 1080 + 32, + .hsync_end = 1080 + 32 + 8, + .htotal = 1080 + 32 + 8 + 32, + .vdisplay = 1920, + .vsync_start = 1920 + 16, + .vsync_end = 1920 + 16 + 2, + .vtotal = 1920 + 16 + 2 + 14, + .clock = 134920, + .flags = DRM_MODE_FLAG_NHSYNC | DRM_MODE_FLAG_NVSYNC, + .width_mm = 70, + .height_mm = 127, +}; + +static const struct hx8394_panel_desc hl055fhav028c_desc = { + .mode = &hl055fhav028c_mode, + .lanes = 4, + .mode_flags = MIPI_DSI_MODE_VIDEO | MIPI_DSI_MODE_VIDEO_BURST, + .format = MIPI_DSI_FMT_RGB888, + .init_sequence = hl055fhav028c_init_sequence, +}; + static int hx8394_enable(struct drm_panel *panel) { struct hx8394 *ctx = panel_to_hx8394(panel); @@ -683,6 +824,7 @@ static void hx8394_remove(struct mipi_dsi_device *dsi) static const struct of_device_id hx8394_of_match[] = { { .compatible = "hannstar,hsd060bhw4", .data = &hsd060bhw4_desc }, + { .compatible = "huiling,hl055fhav028c", .data = &hl055fhav028c_desc }, { .compatible = "powkiddy,x55-panel", .data = &powkiddy_x55_desc }, { .compatible = "microchip,ac40t08a-mipi-panel", .data = &mchp_ac40t08a_desc }, { /* sentinel */ } -- 2.43.0