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Message-Id: <20200701103126.1512615-10-megous@megous.com>
Date: Wed, 1 Jul 2020 12:31:22 +0200
From: Ondrej Jirman <megous@...ous.com>
To: linux-sunxi@...glegroups.com,
Thierry Reding <thierry.reding@...il.com>,
Sam Ravnborg <sam@...nborg.org>,
David Airlie <airlied@...ux.ie>,
Daniel Vetter <daniel@...ll.ch>,
Guido Günther <agx@...xcpu.org>,
Purism Kernel Team <kernel@...i.sm>,
Rob Herring <robh+dt@...nel.org>,
Maxime Ripard <mripard@...nel.org>,
Chen-Yu Tsai <wens@...e.org>,
Linus Walleij <linus.walleij@...aro.org>,
Icenowy Zheng <icenowy@...c.io>
Cc: Ondrej Jirman <megous@...ous.com>, dri-devel@...ts.freedesktop.org,
devicetree@...r.kernel.org, linux-kernel@...r.kernel.org,
linux-arm-kernel@...ts.infradead.org,
Samuel Holland <samuel@...lland.org>,
Martijn Braam <martijn@...xit.nl>, Luca Weiss <luca@...tu.xyz>,
Bhushan Shah <bshah@....org>
Subject: [PATCH v6 09/13] drm/panel: st7703: Add support for Xingbangda XBD599
Xingbangda XBD599 is a 5.99" 720x1440 MIPI-DSI LCD panel used in
PinePhone. Add support for it.
Signed-off-by: Icenowy Zheng <icenowy@...c.io>
Signed-off-by: Ondrej Jirman <megous@...ous.com>
Reviewed-by: Linus Walleij <linus.walleij@...aro.org>
---
drivers/gpu/drm/panel/panel-sitronix-st7703.c | 200 +++++++++++++++++-
1 file changed, 198 insertions(+), 2 deletions(-)
diff --git a/drivers/gpu/drm/panel/panel-sitronix-st7703.c b/drivers/gpu/drm/panel/panel-sitronix-st7703.c
index cdbf7dfb4dd4..5cd5503f894f 100644
--- a/drivers/gpu/drm/panel/panel-sitronix-st7703.c
+++ b/drivers/gpu/drm/panel/panel-sitronix-st7703.c
@@ -39,10 +39,11 @@
#define ST7703_CMD_SETEXTC 0xB9
#define ST7703_CMD_SETMIPI 0xBA
#define ST7703_CMD_SETVDC 0xBC
-#define ST7703_CMD_UNKNOWN0 0xBF
+#define ST7703_CMD_UNKNOWN_BF 0xBF
#define ST7703_CMD_SETSCR 0xC0
#define ST7703_CMD_SETPOWER 0xC1
#define ST7703_CMD_SETPANEL 0xCC
+#define ST7703_CMD_UNKNOWN_C6 0xC6
#define ST7703_CMD_SETGAMMA 0xE0
#define ST7703_CMD_SETEQ 0xE3
#define ST7703_CMD_SETGIP1 0xE9
@@ -109,7 +110,7 @@ static int jh057n_init_sequence(struct st7703 *ctx)
msleep(20);
dsi_generic_write_seq(dsi, ST7703_CMD_SETVCOM, 0x3F, 0x3F);
- dsi_generic_write_seq(dsi, ST7703_CMD_UNKNOWN0, 0x02, 0x11, 0x00);
+ dsi_generic_write_seq(dsi, ST7703_CMD_UNKNOWN_BF, 0x02, 0x11, 0x00);
dsi_generic_write_seq(dsi, ST7703_CMD_SETGIP1,
0x82, 0x10, 0x06, 0x05, 0x9E, 0x0A, 0xA5, 0x12,
0x31, 0x23, 0x37, 0x83, 0x04, 0xBC, 0x27, 0x38,
@@ -163,6 +164,200 @@ struct st7703_panel_desc jh057n00900_panel_desc = {
.init_sequence = jh057n_init_sequence,
};
+#define dsi_dcs_write_seq(dsi, cmd, seq...) do { \
+ static const u8 d[] = { seq }; \
+ int ret; \
+ ret = mipi_dsi_dcs_write(dsi, cmd, d, ARRAY_SIZE(d)); \
+ if (ret < 0) \
+ return ret; \
+ } while (0)
+
+
+static int xbd599_init_sequence(struct st7703 *ctx)
+{
+ struct mipi_dsi_device *dsi = to_mipi_dsi_device(ctx->dev);
+
+ /*
+ * Init sequence was supplied by the panel vendor.
+ */
+
+ /* Magic sequence to unlock user commands below. */
+ dsi_dcs_write_seq(dsi, ST7703_CMD_SETEXTC, 0xF1, 0x12, 0x83);
+
+ dsi_dcs_write_seq(dsi, ST7703_CMD_SETMIPI,
+ 0x33, /* VC_main = 0, Lane_Number = 3 (4 lanes) */
+ 0x81, /* DSI_LDO_SEL = 1.7V, RTERM = 90 Ohm */
+ 0x05, /* IHSRX = x6 (Low High Speed driving ability) */
+ 0xF9, /* TX_CLK_SEL = fDSICLK/16 */
+ 0x0E, /* HFP_OSC (min. HFP number in DSI mode) */
+ 0x0E, /* HBP_OSC (min. HBP number in DSI mode) */
+ /* The rest is undocumented in ST7703 datasheet */
+ 0x20, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+ 0x44, 0x25, 0x00, 0x91, 0x0a, 0x00, 0x00, 0x02,
+ 0x4F, 0x11, 0x00, 0x00, 0x37);
+
+ dsi_dcs_write_seq(dsi, ST7703_CMD_SETPOWER_EXT,
+ 0x25, /* PCCS = 2, ECP_DC_DIV = 1/4 HSYNC */
+ 0x22, /* DT = 15ms XDK_ECP = x2 */
+ 0x20, /* PFM_DC_DIV = /1 */
+ 0x03 /* ECP_SYNC_EN = 1, VGX_SYNC_EN = 1 */);
+
+ /* RGB I/F porch timing */
+ dsi_dcs_write_seq(dsi, ST7703_CMD_SETRGBIF,
+ 0x10, /* VBP_RGB_GEN */
+ 0x10, /* VFP_RGB_GEN */
+ 0x05, /* DE_BP_RGB_GEN */
+ 0x05, /* DE_FP_RGB_GEN */
+ /* The rest is undocumented in ST7703 datasheet */
+ 0x03, 0xFF,
+ 0x00, 0x00,
+ 0x00, 0x00);
+
+ /* Source driving settings. */
+ dsi_dcs_write_seq(dsi, ST7703_CMD_SETSCR,
+ 0x73, /* N_POPON */
+ 0x73, /* N_NOPON */
+ 0x50, /* I_POPON */
+ 0x50, /* I_NOPON */
+ 0x00, /* SCR[31,24] */
+ 0xC0, /* SCR[23,16] */
+ 0x08, /* SCR[15,8] */
+ 0x70, /* SCR[7,0] */
+ 0x00 /* Undocumented */);
+
+ /* NVDDD_SEL = -1.8V, VDDD_SEL = out of range (possibly 1.9V?) */
+ dsi_dcs_write_seq(dsi, ST7703_CMD_SETVDC, 0x4E);
+
+ /*
+ * SS_PANEL = 1 (reverse scan), GS_PANEL = 0 (normal scan)
+ * REV_PANEL = 1 (normally black panel), BGR_PANEL = 1 (BGR)
+ */
+ dsi_dcs_write_seq(dsi, ST7703_CMD_SETPANEL, 0x0B);
+
+ /* Zig-Zag Type C column inversion. */
+ dsi_dcs_write_seq(dsi, ST7703_CMD_SETCYC, 0x80);
+
+ /* Set display resolution. */
+ dsi_dcs_write_seq(dsi, ST7703_CMD_SETDISP,
+ 0xF0, /* NL = 240 */
+ 0x12, /* RES_V_LSB = 0, BLK_CON = VSSD,
+ * RESO_SEL = 720RGB
+ */
+ 0xF0 /* WHITE_GND_EN = 1 (GND),
+ * WHITE_FRAME_SEL = 7 frames,
+ * ISC = 0 frames
+ */);
+
+ dsi_dcs_write_seq(dsi, ST7703_CMD_SETEQ,
+ 0x00, /* PNOEQ */
+ 0x00, /* NNOEQ */
+ 0x0B, /* PEQGND */
+ 0x0B, /* NEQGND */
+ 0x10, /* PEQVCI */
+ 0x10, /* NEQVCI */
+ 0x00, /* PEQVCI1 */
+ 0x00, /* NEQVCI1 */
+ 0x00, /* reserved */
+ 0x00, /* reserved */
+ 0xFF, /* reserved */
+ 0x00, /* reserved */
+ 0xC0, /* ESD_DET_DATA_WHITE = 1, ESD_WHITE_EN = 1 */
+ 0x10 /* SLPIN_OPTION = 1 (no need vsync after sleep-in)
+ * VEDIO_NO_CHECK_EN = 0
+ * ESD_WHITE_GND_EN = 0
+ * ESD_DET_TIME_SEL = 0 frames
+ */);
+
+ /* Undocumented command. */
+ dsi_dcs_write_seq(dsi, ST7703_CMD_UNKNOWN_C6, 0x01, 0x00, 0xFF, 0xFF, 0x00);
+
+ dsi_dcs_write_seq(dsi, ST7703_CMD_SETPOWER,
+ 0x74, /* VBTHS, VBTLS: VGH = 17V, VBL = -11V */
+ 0x00, /* FBOFF_VGH = 0, FBOFF_VGL = 0 */
+ 0x32, /* VRP */
+ 0x32, /* VRN */
+ 0x77, /* reserved */
+ 0xF1, /* APS = 1 (small),
+ * VGL_DET_EN = 1, VGH_DET_EN = 1,
+ * VGL_TURBO = 1, VGH_TURBO = 1
+ */
+ 0xFF, /* VGH1_L_DIV, VGL1_L_DIV (1.5MHz) */
+ 0xFF, /* VGH1_R_DIV, VGL1_R_DIV (1.5MHz) */
+ 0xCC, /* VGH2_L_DIV, VGL2_L_DIV (2.6MHz) */
+ 0xCC, /* VGH2_R_DIV, VGL2_R_DIV (2.6MHz) */
+ 0x77, /* VGH3_L_DIV, VGL3_L_DIV (4.5MHz) */
+ 0x77 /* VGH3_R_DIV, VGL3_R_DIV (4.5MHz) */);
+
+ /* Reference voltage. */
+ dsi_dcs_write_seq(dsi, ST7703_CMD_SETBGP,
+ 0x07, /* VREF_SEL = 4.2V */
+ 0x07 /* NVREF_SEL = 4.2V */);
+ msleep(20);
+
+ dsi_dcs_write_seq(dsi, ST7703_CMD_SETVCOM,
+ 0x2C, /* VCOMDC_F = -0.67V */
+ 0x2C /* VCOMDC_B = -0.67V */);
+
+ /* Undocumented command. */
+ dsi_dcs_write_seq(dsi, ST7703_CMD_UNKNOWN_BF, 0x02, 0x11, 0x00);
+
+ /* This command is to set forward GIP timing. */
+ dsi_dcs_write_seq(dsi, ST7703_CMD_SETGIP1,
+ 0x82, 0x10, 0x06, 0x05, 0xA2, 0x0A, 0xA5, 0x12,
+ 0x31, 0x23, 0x37, 0x83, 0x04, 0xBC, 0x27, 0x38,
+ 0x0C, 0x00, 0x03, 0x00, 0x00, 0x00, 0x0C, 0x00,
+ 0x03, 0x00, 0x00, 0x00, 0x75, 0x75, 0x31, 0x88,
+ 0x88, 0x88, 0x88, 0x88, 0x88, 0x13, 0x88, 0x64,
+ 0x64, 0x20, 0x88, 0x88, 0x88, 0x88, 0x88, 0x88,
+ 0x02, 0x88, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+ 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00);
+
+ /* This command is to set backward GIP timing. */
+ dsi_dcs_write_seq(dsi, ST7703_CMD_SETGIP2,
+ 0x02, 0x21, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+ 0x00, 0x00, 0x00, 0x00, 0x02, 0x46, 0x02, 0x88,
+ 0x88, 0x88, 0x88, 0x88, 0x88, 0x64, 0x88, 0x13,
+ 0x57, 0x13, 0x88, 0x88, 0x88, 0x88, 0x88, 0x88,
+ 0x75, 0x88, 0x23, 0x14, 0x00, 0x00, 0x02, 0x00,
+ 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+ 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x03, 0x0A,
+ 0xA5, 0x00, 0x00, 0x00, 0x00);
+
+ /* Adjust the gamma characteristics of the panel. */
+ dsi_dcs_write_seq(dsi, ST7703_CMD_SETGAMMA,
+ 0x00, 0x09, 0x0D, 0x23, 0x27, 0x3C, 0x41, 0x35,
+ 0x07, 0x0D, 0x0E, 0x12, 0x13, 0x10, 0x12, 0x12,
+ 0x18, 0x00, 0x09, 0x0D, 0x23, 0x27, 0x3C, 0x41,
+ 0x35, 0x07, 0x0D, 0x0E, 0x12, 0x13, 0x10, 0x12,
+ 0x12, 0x18);
+
+ return 0;
+}
+
+static const struct drm_display_mode xbd599_mode = {
+ .hdisplay = 720,
+ .hsync_start = 720 + 40,
+ .hsync_end = 720 + 40 + 40,
+ .htotal = 720 + 40 + 40 + 40,
+ .vdisplay = 1440,
+ .vsync_start = 1440 + 18,
+ .vsync_end = 1440 + 18 + 10,
+ .vtotal = 1440 + 18 + 10 + 17,
+ .vrefresh = 60,
+ .clock = 69000,
+ .flags = DRM_MODE_FLAG_NHSYNC | DRM_MODE_FLAG_NVSYNC,
+ .width_mm = 68,
+ .height_mm = 136,
+};
+
+static const struct st7703_panel_desc xbd599_desc = {
+ .mode = &xbd599_mode,
+ .lanes = 4,
+ .mode_flags = MIPI_DSI_MODE_VIDEO | MIPI_DSI_MODE_VIDEO_SYNC_PULSE,
+ .format = MIPI_DSI_FMT_RGB888,
+ .init_sequence = xbd599_init_sequence,
+};
+
static int st7703_enable(struct drm_panel *panel)
{
struct st7703 *ctx = panel_to_st7703(panel);
@@ -428,6 +623,7 @@ static int st7703_remove(struct mipi_dsi_device *dsi)
static const struct of_device_id st7703_of_match[] = {
{ .compatible = "rocktech,jh057n00900", .data = &jh057n00900_panel_desc },
+ { .compatible = "xingbangda,xbd599", .data = &xbd599_desc },
{ /* sentinel */ }
};
MODULE_DEVICE_TABLE(of, st7703_of_match);
--
2.27.0
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