Commit a7890252 authored by Chris Morgan's avatar Chris Morgan Committed by Neil Armstrong
Browse files

drm/panel: st7701: Add Anbernic RG-ARC Panel Support 



The Powkiddy RG-ARC is a series of 2 handheld devices, each with a 4
inch 480x640 display. Add support for the display.

Signed-off-by: default avatarChris Morgan <macromorgan@hotmail.com>
Reviewed-by: default avatarNeil Armstrong <neil.armstrong@linaro.org>
Link: https://lore.kernel.org/r/20231208154847.130615-4-macroalpha82@gmail.com


Signed-off-by: default avatarNeil Armstrong <neil.armstrong@linaro.org>
Link: https://patchwork.freedesktop.org/patch/msgid/20231208154847.130615-4-macroalpha82@gmail.com
parent acbf9184

drivers/gpu/drm/panel/panel-sitronix-st7701.c

+136 −0
Original line number Diff line number Diff line
@@ -423,6 +423,42 @@ static void kd50t048a_gip_sequence(struct st7701 *st7701) 
		   0xFF, 0xFF, 0xFF, 0xFF, 0x10, 0x45, 0x67, 0x98, 0xBA);

}



static void rg_arc_gip_sequence(struct st7701 *st7701)

{

	st7701_switch_cmd_bkx(st7701, true, 3);

	ST7701_DSI(st7701, 0xEF, 0x08);

	st7701_switch_cmd_bkx(st7701, true, 0);

	ST7701_DSI(st7701, 0xC7, 0x04);

	ST7701_DSI(st7701, 0xCC, 0x38);

	st7701_switch_cmd_bkx(st7701, true, 1);

	ST7701_DSI(st7701, 0xB9, 0x10);

	ST7701_DSI(st7701, 0xBC, 0x03);

	ST7701_DSI(st7701, 0xC0, 0x89);

	ST7701_DSI(st7701, 0xE0, 0x00, 0x00, 0x02);

	ST7701_DSI(st7701, 0xE1, 0x04, 0x00, 0x00, 0x00, 0x05, 0x00, 0x00,

		   0x00, 0x00, 0x20, 0x20);

	ST7701_DSI(st7701, 0xE2, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,

		   0x00, 0x00, 0x00, 0x00, 0x00, 0x00);

	ST7701_DSI(st7701, 0xE3, 0x00, 0x00, 0x33, 0x00);

	ST7701_DSI(st7701, 0xE4, 0x22, 0x00);

	ST7701_DSI(st7701, 0xE5, 0x04, 0x5C, 0xA0, 0xA0, 0x06, 0x5C, 0xA0,

		   0xA0, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00);

	ST7701_DSI(st7701, 0xE6, 0x00, 0x00, 0x33, 0x00);

	ST7701_DSI(st7701, 0xE7, 0x22, 0x00);

	ST7701_DSI(st7701, 0xE8, 0x05, 0x5C, 0xA0, 0xA0, 0x07, 0x5C, 0xA0,

		   0xA0, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00);

	ST7701_DSI(st7701, 0xEB, 0x02, 0x00, 0x40, 0x40, 0x00, 0x00, 0x00);

	ST7701_DSI(st7701, 0xEC, 0x00, 0x00);

	ST7701_DSI(st7701, 0xED, 0xFA, 0x45, 0x0B, 0xFF, 0xFF, 0xFF, 0xFF,

		   0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xB0, 0x54, 0xAF);

	ST7701_DSI(st7701, 0xEF, 0x08, 0x08, 0x08, 0x45, 0x3F, 0x54);

	st7701_switch_cmd_bkx(st7701, false, 0);

	ST7701_DSI(st7701, MIPI_DCS_SET_ADDRESS_MODE, 0x17);

	ST7701_DSI(st7701, MIPI_DCS_SET_PIXEL_FORMAT, 0x77);

	ST7701_DSI(st7701, MIPI_DCS_EXIT_SLEEP_MODE, 0x00);

	msleep(120);

}



static int st7701_prepare(struct drm_panel *panel)

{

	struct st7701 *st7701 = panel_to_st7701(panel);
@@ -839,6 +875,105 @@ static const struct st7701_panel_desc kd50t048a_desc = { 
	.gip_sequence = kd50t048a_gip_sequence,

};



static const struct drm_display_mode rg_arc_mode = {

	.clock          = 25600,



	.hdisplay	= 480,

	.hsync_start	= 480 + 60,

	.hsync_end	= 480 + 60 + 42,

	.htotal         = 480 + 60 + 42 + 60,



	.vdisplay	= 640,

	.vsync_start	= 640 + 10,

	.vsync_end	= 640 + 10 + 4,

	.vtotal         = 640 + 10 + 4 + 16,



	.width_mm	= 63,

	.height_mm	= 84,



	.type = DRM_MODE_TYPE_DRIVER | DRM_MODE_TYPE_PREFERRED,

};



static const struct st7701_panel_desc rg_arc_desc = {

	.mode = &rg_arc_mode,

	.lanes = 2,

	.format = MIPI_DSI_FMT_RGB888,

	.panel_sleep_delay = 80,



	.pv_gamma = {

		CFIELD_PREP(DSI_CMD2_BK0_GAMCTRL_AJ_MASK, 0x01) |

		CFIELD_PREP(DSI_CMD2_BK0_GAMCTRL_VC0_MASK, 0),

		CFIELD_PREP(DSI_CMD2_BK0_GAMCTRL_AJ_MASK, 0) |

		CFIELD_PREP(DSI_CMD2_BK0_GAMCTRL_VC4_MASK, 0x16),

		CFIELD_PREP(DSI_CMD2_BK0_GAMCTRL_AJ_MASK, 0) |

		CFIELD_PREP(DSI_CMD2_BK0_GAMCTRL_VC8_MASK, 0x1d),

		CFIELD_PREP(DSI_CMD2_BK0_GAMCTRL_VC16_MASK, 0x0e),



		CFIELD_PREP(DSI_CMD2_BK0_GAMCTRL_AJ_MASK, 0) |

		CFIELD_PREP(DSI_CMD2_BK0_GAMCTRL_VC24_MASK, 0x12),

		CFIELD_PREP(DSI_CMD2_BK0_GAMCTRL_VC52_MASK, 0x06),

		CFIELD_PREP(DSI_CMD2_BK0_GAMCTRL_VC80_MASK, 0x0c),

		CFIELD_PREP(DSI_CMD2_BK0_GAMCTRL_VC108_MASK, 0x0a),



		CFIELD_PREP(DSI_CMD2_BK0_GAMCTRL_VC147_MASK, 0x09),

		CFIELD_PREP(DSI_CMD2_BK0_GAMCTRL_VC175_MASK, 0x25),

		CFIELD_PREP(DSI_CMD2_BK0_GAMCTRL_VC203_MASK, 0x00),

		CFIELD_PREP(DSI_CMD2_BK0_GAMCTRL_AJ_MASK, 0) |

		CFIELD_PREP(DSI_CMD2_BK0_GAMCTRL_VC231_MASK, 0x03),



		CFIELD_PREP(DSI_CMD2_BK0_GAMCTRL_VC239_MASK, 0x00),

		CFIELD_PREP(DSI_CMD2_BK0_GAMCTRL_AJ_MASK, 0) |

		CFIELD_PREP(DSI_CMD2_BK0_GAMCTRL_VC247_MASK, 0x3f),

		CFIELD_PREP(DSI_CMD2_BK0_GAMCTRL_AJ_MASK, 0) |

		CFIELD_PREP(DSI_CMD2_BK0_GAMCTRL_VC251_MASK, 0x3f),

		CFIELD_PREP(DSI_CMD2_BK0_GAMCTRL_AJ_MASK, 0) |

		CFIELD_PREP(DSI_CMD2_BK0_GAMCTRL_VC255_MASK, 0x1c)

	},

	.nv_gamma = {

		CFIELD_PREP(DSI_CMD2_BK0_GAMCTRL_AJ_MASK, 0x01) |

		CFIELD_PREP(DSI_CMD2_BK0_GAMCTRL_VC0_MASK, 0),

		CFIELD_PREP(DSI_CMD2_BK0_GAMCTRL_AJ_MASK, 0) |

		CFIELD_PREP(DSI_CMD2_BK0_GAMCTRL_VC4_MASK, 0x16),

		CFIELD_PREP(DSI_CMD2_BK0_GAMCTRL_AJ_MASK, 0) |

		CFIELD_PREP(DSI_CMD2_BK0_GAMCTRL_VC8_MASK, 0x1e),

		CFIELD_PREP(DSI_CMD2_BK0_GAMCTRL_VC16_MASK, 0x0e),



		CFIELD_PREP(DSI_CMD2_BK0_GAMCTRL_AJ_MASK, 0) |

		CFIELD_PREP(DSI_CMD2_BK0_GAMCTRL_VC24_MASK, 0x11),

		CFIELD_PREP(DSI_CMD2_BK0_GAMCTRL_VC52_MASK, 0x06),

		CFIELD_PREP(DSI_CMD2_BK0_GAMCTRL_VC80_MASK, 0x0c),

		CFIELD_PREP(DSI_CMD2_BK0_GAMCTRL_VC108_MASK, 0x08),



		CFIELD_PREP(DSI_CMD2_BK0_GAMCTRL_VC147_MASK, 0x09),

		CFIELD_PREP(DSI_CMD2_BK0_GAMCTRL_VC175_MASK, 0x26),

		CFIELD_PREP(DSI_CMD2_BK0_GAMCTRL_VC203_MASK, 0x00),

		CFIELD_PREP(DSI_CMD2_BK0_GAMCTRL_AJ_MASK, 0) |

		CFIELD_PREP(DSI_CMD2_BK0_GAMCTRL_VC231_MASK, 0x15),



		CFIELD_PREP(DSI_CMD2_BK0_GAMCTRL_VC239_MASK, 0x00),

		CFIELD_PREP(DSI_CMD2_BK0_GAMCTRL_AJ_MASK, 0) |

		CFIELD_PREP(DSI_CMD2_BK0_GAMCTRL_VC247_MASK, 0x3f),

		CFIELD_PREP(DSI_CMD2_BK0_GAMCTRL_AJ_MASK, 0) |

		CFIELD_PREP(DSI_CMD2_BK0_GAMCTRL_VC251_MASK, 0x3f),

		CFIELD_PREP(DSI_CMD2_BK0_GAMCTRL_AJ_MASK, 0) |

		CFIELD_PREP(DSI_CMD2_BK0_GAMCTRL_VC255_MASK, 0x1c)

	},

	.nlinv = 0,

	.vop_uv = 4500000,

	.vcom_uv = 762500,

	.vgh_mv = 15000,

	.vgl_mv = -9510,

	.avdd_mv = 6600,

	.avcl_mv = -4400,

	.gamma_op_bias = OP_BIAS_MIDDLE,

	.input_op_bias = OP_BIAS_MIN,

	.output_op_bias = OP_BIAS_MIN,

	.t2d_ns = 1600,

	.t3d_ns = 10400,

	.eot_en = true,

	.gip_sequence = rg_arc_gip_sequence,

};



static int st7701_dsi_probe(struct mipi_dsi_device *dsi)

{

	const struct st7701_panel_desc *desc;
@@ -917,6 +1052,7 @@ static void st7701_dsi_remove(struct mipi_dsi_device *dsi) 
}



static const struct of_device_id st7701_of_match[] = {

	{ .compatible = "anbernic,rg-arc-panel", .data = &rg_arc_desc },

	{ .compatible = "densitron,dmt028vghmcmi-1a", .data = &dmt028vghmcmi_1a_desc },

	{ .compatible = "elida,kd50t048a", .data = &kd50t048a_desc },

	{ .compatible = "techstar,ts8550b", .data = &ts8550b_desc },