--- /dev/null
+// SPDX-License-Identifier: GPL-2.0+
+/*
+ * Copyright (c) 2025 Ion Agorria <ion@agorria.com>
+ */
+
+#include <backlight.h>
+#include <dm.h>
+#include <panel.h>
+#include <log.h>
+#include <malloc.h>
+#include <spi.h>
+#include <mipi_display.h>
+#include <linux/delay.h>
+#include <power/regulator.h>
+#include <asm/gpio.h>
+
+#define S6E63M0_DCS_CMD 0
+#define S6E63M0_DCS_DATA 1
+
+#define S6E63M0_INFO_FLAG_PGAMMACTL BIT(0)
+#define S6E63M0_INFO_FLAG_GAMMA_DELTA BIT(1)
+
+#define S6E63M0_GTCON_FLAG_FLIP_H BIT(0)
+#define S6E63M0_GTCON_FLAG_FLIP_V BIT(1)
+
+/* Manufacturer Command Set */
+#define MCS_PENTILE_1 0xb3
+#define MCS_GAMMA_DELTA_Y_RED 0xb5
+#define MCS_GAMMA_DELTA_X_RED 0xb6
+#define MCS_GAMMA_DELTA_Y_GREEN 0xb7
+#define MCS_GAMMA_DELTA_X_GREEN 0xb8
+#define MCS_GAMMA_DELTA_Y_BLUE 0xb9
+#define MCS_GAMMA_DELTA_X_BLUE 0xba
+#define MCS_DISCTL 0xf2
+#define MCS_SRCCTL 0xf6
+#define MCS_IFCTL 0xf7
+#define MCS_PANELCTL 0xf8
+#define MCS_PGAMMACTL 0xfa
+
+#define MCS_PANELCTL_LEN 14
+#define MCS_IFCTL_LEN 3
+#define MCS_PGAMMACTL_LEN 22
+#define MCS_GAMMA_DELTA_Y_LEN 32
+#define MCS_GAMMA_DELTA_X_LEN 16
+
+struct s6e63m0_priv {
+ struct udevice *vdd3;
+ struct udevice *vci;
+
+ struct s6e63m0_info *info;
+
+ struct gpio_desc reset_gpio;
+
+ u8 gtcon;
+};
+
+struct s6e63m0_info {
+ const u32 flags;
+ struct display_timing timing;
+ const u8 cmd_mcs_panelctl[MCS_PANELCTL_LEN];
+ const u8 cmd_mcs_pgammactl_1[MCS_PGAMMACTL_LEN];
+ const u8 cmd_mcs_pgammactl_2;
+ const u8 cmd_mcs_gamma_delta_y[MCS_GAMMA_DELTA_Y_LEN];
+ const u8 cmd_mcs_gamma_delta_x[MCS_GAMMA_DELTA_X_LEN];
+};
+
+static const struct s6e63m0_info s6e63m0_generic_info = {
+ .flags = S6E63M0_INFO_FLAG_GAMMA_DELTA,
+ .timing = {
+ .pixelclock.typ = 25628,
+ .hactive.typ = 480,
+ .hfront_porch.typ = 16,
+ .hback_porch.typ = 16,
+ .hsync_len.typ = 2,
+ .vactive.typ = 800,
+ .vfront_porch.typ = 28,
+ .vback_porch.typ = 1,
+ .vsync_len.typ = 2,
+ .flags = DISPLAY_FLAGS_HSYNC_LOW | DISPLAY_FLAGS_VSYNC_LOW,
+ },
+ .cmd_mcs_panelctl = {
+ 0x01, /* DOCT */ 0x27, /* CLWEA */
+ 0x27, /* CLWEB*/ 0x07, /* CLTE */
+ 0x07, /* SHE */ 0x54, /* FLTE */
+ 0x9F, /* FLWE */ 0x63, /* SCTE */
+ 0x8F, /* SCWE */ 0x1A, /* INTE */
+ 0x33, /* INWE */ 0x0D, /* EMPS */
+ 0x00, /* E_INTE */ 0x00 /* E_INWE */
+ },
+ .cmd_mcs_pgammactl_1 = {
+ 0x00, 0x18, 0x08, 0x24, 0x64, 0x56, 0x33, 0xb6,
+ 0xba, 0xa8, 0xac, 0xb1, 0x9d, 0xc1, 0xc1, 0xb7,
+ 0x00, 0x9c, 0x00, 0x9f, 0x00, 0xd6
+ },
+ .cmd_mcs_pgammactl_2 = 0x01,
+ .cmd_mcs_gamma_delta_y = {
+ 0x2c, 0x12, 0x0c, 0x0a, 0x10, 0x0e, 0x17, 0x13,
+ 0x1f, 0x1a, 0x2a, 0x24, 0x1f, 0x1b, 0x1a, 0x17,
+ 0x2b, 0x26, 0x22, 0x20, 0x3a, 0x34, 0x30, 0x2c,
+ 0x29, 0x26, 0x25, 0x23, 0x21, 0x20, 0x1e, 0x1e
+ },
+ .cmd_mcs_gamma_delta_x = {
+ 0x00, 0x00, 0x11, 0x22, 0x33, 0x44, 0x44, 0x44,
+ 0x55, 0x55, 0x66, 0x66, 0x66, 0x66, 0x66, 0x66
+ },
+};
+
+static const struct s6e63m0_info samsung_bose_panel_info = {
+ .flags = S6E63M0_INFO_FLAG_PGAMMACTL | S6E63M0_INFO_FLAG_GAMMA_DELTA,
+ .timing = {
+ .pixelclock.typ = 24000000,
+ .hactive.typ = 480,
+ .hfront_porch.typ = 16,
+ .hback_porch.typ = 14,
+ .hsync_len.typ = 2,
+ .vactive.typ = 800,
+ .vfront_porch.typ = 28,
+ .vback_porch.typ = 1,
+ .vsync_len.typ = 2,
+ .flags = DISPLAY_FLAGS_HSYNC_LOW | DISPLAY_FLAGS_VSYNC_LOW |
+ DISPLAY_FLAGS_DE_LOW | DISPLAY_FLAGS_PIXDATA_NEGEDGE,
+ },
+ .cmd_mcs_panelctl = {
+ 0x01, /* DOCT */ 0x27, /* CLWEA */
+ 0x27, /* CLWEB*/ 0x07, /* CLTE */
+ 0x07, /* SHE */ 0x54, /* FLTE */
+ 0x9F, /* FLWE */ 0x63, /* SCTE */
+ 0x86, /* SCWE */ 0x1A, /* INTE */
+ 0x33, /* INWE */ 0x0D, /* EMPS */
+ 0x00, /* E_INTE */ 0x00 /* E_INWE */
+ },
+ .cmd_mcs_pgammactl_1 = {
+ 0x02, 0x18, 0x08, 0x24, 0x70, 0x6e, 0x4e, 0xbc,
+ 0xc0, 0xaf, 0xb3, 0xb8, 0xa5, 0xc5, 0xc7, 0xbb,
+ 0x00, 0xb9, 0x00, 0xb8, 0x00, 0xfc
+ },
+ .cmd_mcs_pgammactl_2 = 0x03,
+ .cmd_mcs_gamma_delta_y = {
+ 0x2c, 0x12, 0x0c, 0x0a, 0x10, 0x0e, 0x17, 0x13,
+ 0x1f, 0x1a, 0x2a, 0x24, 0x1f, 0x1b, 0x1a, 0x17,
+ 0x2b, 0x26, 0x22, 0x20, 0x3a, 0x34, 0x30, 0x2c,
+ 0x29, 0x26, 0x25, 0x23, 0x21, 0x20, 0x1e, 0x1e
+ },
+ .cmd_mcs_gamma_delta_x = {
+ 0x00, 0x00, 0x11, 0x22, 0x33, 0x44, 0x44, 0x44,
+ 0x55, 0x55, 0x66, 0x66, 0x66, 0x66, 0x66, 0x66
+ },
+};
+
+static int s6e63m0_dcs_write(struct udevice *dev, u8 cmd, const u8 *seq, size_t len)
+{
+ int ret;
+ u8 data[2];
+ int i;
+
+ data[0] = S6E63M0_DCS_CMD;
+ data[1] = cmd;
+
+ ret = dm_spi_xfer(dev, 9, &data, NULL, SPI_XFER_ONCE);
+ if (ret)
+ return ret;
+
+ for (i = 0; i < len; i++) {
+ data[0] = S6E63M0_DCS_DATA;
+ data[1] = seq[i];
+
+ ret = dm_spi_xfer(dev, 9, &data, NULL, SPI_XFER_ONCE);
+ if (ret)
+ return ret;
+ }
+
+ return 0;
+}
+
+#define s6e63m0_dcs_write_seq_static(dev, cmd, seq ...) ({ \
+ static const u8 d[] = { seq }; \
+ ret = s6e63m0_dcs_write(dev, cmd, d, ARRAY_SIZE(d)); \
+ if (ret) \
+ return ret; \
+})
+
+static int s6e63m0_enable_backlight(struct udevice *dev)
+{
+ struct s6e63m0_priv *priv = dev_get_priv(dev);
+ struct s6e63m0_info *info = priv->info;
+ u8 cmd_mcs_ifctl[MCS_IFCTL_LEN];
+ int ret;
+
+ ret = s6e63m0_dcs_write(dev, MCS_PANELCTL, info->cmd_mcs_panelctl, MCS_PANELCTL_LEN);
+ if (ret)
+ return ret;
+
+ s6e63m0_dcs_write_seq_static(dev, MCS_DISCTL,
+ 0x02, /* Number of Line */
+ 0x03, /* VBP */
+ 0x1c, /* VFP */
+ 0x10, /* HBP */
+ 0x10); /* HFP */
+
+ cmd_mcs_ifctl[0] = priv->gtcon; /* GTCON */
+ cmd_mcs_ifctl[1] = 0x00; /* Display Mode */
+ cmd_mcs_ifctl[2] = 0x00; /* Vsync/Hsync, DOCCLK, RGB mode */
+ ret = s6e63m0_dcs_write(dev, MCS_IFCTL, cmd_mcs_ifctl, MCS_IFCTL_LEN);
+ if (ret)
+ return ret;
+
+ if (info->flags & S6E63M0_INFO_FLAG_PGAMMACTL) {
+ ret = s6e63m0_dcs_write(dev, MCS_PGAMMACTL, info->cmd_mcs_pgammactl_1,
+ MCS_PGAMMACTL_LEN);
+ if (ret)
+ return ret;
+
+ s6e63m0_dcs_write(dev, MCS_PGAMMACTL, &info->cmd_mcs_pgammactl_2, 1);
+ }
+
+ s6e63m0_dcs_write_seq_static(dev, MCS_SRCCTL, 0x00, 0x8e, 0x07);
+ s6e63m0_dcs_write_seq_static(dev, MCS_PENTILE_1, 0x6c);
+
+ if (info->flags & S6E63M0_INFO_FLAG_GAMMA_DELTA) {
+ ret = s6e63m0_dcs_write(dev, MCS_GAMMA_DELTA_Y_RED, info->cmd_mcs_gamma_delta_y,
+ MCS_GAMMA_DELTA_Y_LEN);
+ if (ret)
+ return ret;
+
+ ret = s6e63m0_dcs_write(dev, MCS_GAMMA_DELTA_X_RED, info->cmd_mcs_gamma_delta_x,
+ MCS_GAMMA_DELTA_X_LEN);
+ if (ret)
+ return ret;
+
+ ret = s6e63m0_dcs_write(dev, MCS_GAMMA_DELTA_Y_GREEN, info->cmd_mcs_gamma_delta_y,
+ MCS_GAMMA_DELTA_Y_LEN);
+ if (ret)
+ return ret;
+
+ ret = s6e63m0_dcs_write(dev, MCS_GAMMA_DELTA_X_GREEN, info->cmd_mcs_gamma_delta_x,
+ MCS_GAMMA_DELTA_X_LEN);
+ if (ret)
+ return ret;
+
+ ret = s6e63m0_dcs_write(dev, MCS_GAMMA_DELTA_Y_BLUE, info->cmd_mcs_gamma_delta_y,
+ MCS_GAMMA_DELTA_Y_LEN);
+ if (ret)
+ return ret;
+
+ ret = s6e63m0_dcs_write(dev, MCS_GAMMA_DELTA_X_BLUE, info->cmd_mcs_gamma_delta_x,
+ MCS_GAMMA_DELTA_X_LEN);
+ if (ret)
+ return ret;
+ }
+
+ s6e63m0_dcs_write_seq_static(dev, MIPI_DCS_EXIT_SLEEP_MODE);
+ s6e63m0_dcs_write_seq_static(dev, MIPI_DCS_SET_DISPLAY_ON);
+
+ return 0;
+}
+
+static int s6e63m0_set_backlight(struct udevice *dev, int percent)
+{
+ return 0;
+}
+
+static int s6e63m0_get_display_timing(struct udevice *dev, struct display_timing *timing)
+{
+ struct s6e63m0_priv *priv = dev_get_priv(dev);
+
+ memcpy(timing, &priv->info->timing, sizeof(*timing));
+
+ return 0;
+}
+
+static int s6e63m0_of_to_plat(struct udevice *dev)
+{
+ struct s6e63m0_priv *priv = dev_get_priv(dev);
+ int ret;
+
+ ret = device_get_supply_regulator(dev, "vdd3-supply", &priv->vdd3);
+ if (ret) {
+ log_debug("%s: cannot get vdd3-supply: ret = %d\n",
+ __func__, ret);
+ return ret;
+ }
+
+ ret = device_get_supply_regulator(dev, "vci-supply", &priv->vci);
+ if (ret) {
+ log_debug("%s: cannot get vci-supply: ret = %d\n",
+ __func__, ret);
+ return ret;
+ }
+
+ ret = gpio_request_by_name(dev, "reset-gpios", 0,
+ &priv->reset_gpio, GPIOD_IS_OUT);
+ if (ret) {
+ log_debug("%s: cannot decode reset-gpios (%d)\n",
+ __func__, ret);
+ return ret;
+ }
+
+ if (dev_read_bool(dev, "flip-horizontal"))
+ priv->gtcon |= S6E63M0_GTCON_FLAG_FLIP_H;
+
+ if (dev_read_bool(dev, "flip-vertical"))
+ priv->gtcon |= S6E63M0_GTCON_FLAG_FLIP_V;
+
+ return 0;
+}
+
+static int s6e63m0_hw_init(struct udevice *dev)
+{
+ struct s6e63m0_priv *priv = dev_get_priv(dev);
+ int ret;
+
+ ret = dm_gpio_set_value(&priv->reset_gpio, 1);
+ if (ret) {
+ log_debug("%s: error entering reset (%d)\n", __func__, ret);
+ return ret;
+ }
+
+ ret = regulator_set_enable_if_allowed(priv->vdd3, 1);
+ if (ret) {
+ log_debug("%s: enabling vdd3-supply failed (%d)\n",
+ __func__, ret);
+ return ret;
+ }
+
+ mdelay(1);
+
+ ret = regulator_set_enable_if_allowed(priv->vci, 1);
+ if (ret) {
+ log_debug("%s: enabling vci-supply failed (%d)\n",
+ __func__, ret);
+ return ret;
+ }
+
+ mdelay(26);
+
+ ret = dm_gpio_set_value(&priv->reset_gpio, 0);
+ if (ret) {
+ log_debug("%s: error exiting reset (%d)\n", __func__, ret);
+ return ret;
+ }
+
+ mdelay(10);
+
+ return 0;
+}
+
+static int s6e63m0_probe(struct udevice *dev)
+{
+ struct s6e63m0_priv *priv = dev_get_priv(dev);
+ struct spi_slave *slave = dev_get_parent_priv(dev);
+ int ret;
+
+ if (device_get_uclass_id(dev->parent) != UCLASS_SPI)
+ return -EPROTONOSUPPORT;
+
+ ret = spi_claim_bus(slave);
+ if (ret) {
+ log_err("SPI bus allocation failed (%d)\n", ret);
+ return ret;
+ }
+
+ priv->info = (struct s6e63m0_info *)dev_get_driver_data(dev);
+
+ return s6e63m0_hw_init(dev);
+}
+
+static const struct panel_ops s6e63m0_ops = {
+ .enable_backlight = s6e63m0_enable_backlight,
+ .set_backlight = s6e63m0_set_backlight,
+ .get_display_timing = s6e63m0_get_display_timing,
+};
+
+static const struct udevice_id s6e63m0_ids[] = {
+ {
+ .compatible = "samsung,s6e63m0",
+ .data = (ulong)&s6e63m0_generic_info
+ },
+ {
+ .compatible = "samsung,bose-panel",
+ .data = (ulong)&samsung_bose_panel_info
+ },
+ { }
+};
+
+U_BOOT_DRIVER(samsung_s6e63m0) = {
+ .name = "samsung_s6e63m0",
+ .id = UCLASS_PANEL,
+ .of_match = s6e63m0_ids,
+ .ops = &s6e63m0_ops,
+ .of_to_plat = s6e63m0_of_to_plat,
+ .probe = s6e63m0_probe,
+ .priv_auto = sizeof(struct s6e63m0_priv),
+};
projects / thirdparty / u-boot.git / commitdiff
