--- /dev/null
+/*
+ * MIPI-DSI based S6E63J0X03 AMOLED lcd 1.63 inch panel driver.
+ *
+ * Copyright (c) 2014 Samsung Electronics Co., Ltd
+ *
+ * Inki Dae, <inki.dae@samsung.com>
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License version 2 as
+ * published by the Free Software Foundation.
+*/
+
+#include <drm/drmP.h>
+#include <drm/drm_mipi_dsi.h>
+#include <drm/drm_panel.h>
+
+#include <linux/of_gpio.h>
+#include <linux/gpio.h>
+#include <linux/regulator/consumer.h>
+
+#include <video/mipi_display.h>
+#include <video/of_videomode.h>
+#include <video/videomode.h>
+
+#define GAMMA_LEVEL_NUM 30
+#define MTP_ID_LEN 6
+/* Manufacturer Command Set */
+#define MCS_MTP_ID 0xD3
+
+struct s6e63j0x03 {
+ struct device *dev;
+ struct drm_panel panel;
+
+ struct regulator_bulk_data supplies[2];
+ int reset_gpio;
+ int te_gpio;
+ u32 power_on_delay;
+ u32 power_off_delay;
+ u32 reset_delay;
+ u32 init_delay;
+ bool flip_horizontal;
+ bool flip_vertical;
+ struct videomode vm;
+ u32 width_mm;
+ u32 height_mm;
+
+ int brightness;
+
+ /* This field is tested by functions directly accessing DSI bus before
+ * transfer, transfer is skipped if it is set. In case of transfer
+ * failure or unexpected response the field is set to error value.
+ * Such construct allows to eliminate many checks in higher level
+ * functions.
+ */
+ int error;
+};
+
+static inline struct s6e63j0x03 *panel_to_s6e63j0x03(struct drm_panel *panel)
+{
+ return container_of(panel, struct s6e63j0x03, panel);
+}
+
+static int s6e63j0x03_clear_error(struct s6e63j0x03 *ctx)
+{
+ int ret = ctx->error;
+
+ ctx->error = 0;
+ return ret;
+}
+
+static void s6e63j0x03_dcs_write(struct s6e63j0x03 *ctx, const void *data, size_t len)
+{
+ struct mipi_dsi_device *dsi = to_mipi_dsi_device(ctx->dev);
+ int ret;
+
+ if (ctx->error < 0)
+ return;
+
+ ret = mipi_dsi_dcs_write(dsi, dsi->channel, data, len);
+ if (ret < 0) {
+ dev_err(ctx->dev, "error %d writing dcs seq: %*ph\n", ret, len,
+ data);
+ ctx->error = ret;
+ }
+}
+
+static int s6e63j0x03_dcs_read(struct s6e63j0x03 *ctx, u8 cmd, void *data, size_t len)
+{
+ struct mipi_dsi_device *dsi = to_mipi_dsi_device(ctx->dev);
+ int ret;
+
+ if (ctx->error < 0)
+ return ctx->error;
+
+ ret = mipi_dsi_dcs_read(dsi, dsi->channel, cmd, data, len);
+ if (ret < 0) {
+ dev_err(ctx->dev, "error %d reading dcs seq(%#x)\n", ret, cmd);
+ ctx->error = ret;
+ }
+
+ return ret;
+}
+
+#define s6e63j0x03_dcs_write_seq(ctx, seq...) \
+({\
+ const u8 d[] = { seq };\
+ BUILD_BUG_ON_MSG(ARRAY_SIZE(d) > 64, "DCS sequence too big for stack");\
+ s6e63j0x03_dcs_write(ctx, d, ARRAY_SIZE(d));\
+})
+
+#define s6e63j0x03_dcs_write_seq_static(ctx, seq...) \
+({\
+ static const u8 d[] = { seq };\
+ s6e63j0x03_dcs_write(ctx, d, ARRAY_SIZE(d));\
+})
+
+static void s6e63j0x03_test_level_1_key_on(struct s6e63j0x03 *ctx)
+{
+ s6e63j0x03_dcs_write_seq_static(ctx, 0xf0, 0x5a, 0x5a);
+}
+
+static void s6e63j0x03_test_level_2_key_on(struct s6e63j0x03 *ctx)
+{
+ s6e63j0x03_dcs_write_seq_static(ctx, 0xf1, 0x5a, 0x5a);
+}
+
+static void s6e63j0x03_porch_adjustment(struct s6e63j0x03 *ctx)
+{
+ s6e63j0x03_dcs_write_seq_static(ctx, 0xf2, 0x1c, 0x28);
+}
+
+static void s6e63j0x03_frame_freq(struct s6e63j0x03 *ctx)
+{
+ s6e63j0x03_dcs_write_seq_static(ctx, 0xb5, 0x00, 0x01, 0x00);
+}
+
+static void s6e63j0x03_mem_addr_set_0(struct s6e63j0x03 *ctx)
+{
+ s6e63j0x03_dcs_write_seq_static(ctx, 0x2a, 0x00, 0x14, 0x01, 0x53);
+}
+
+static void s6e63j0x03_mem_addr_set_1(struct s6e63j0x03 *ctx)
+{
+ s6e63j0x03_dcs_write_seq_static(ctx, 0x2b, 0x00, 0x00, 0x01, 0x3f);
+}
+
+static void s6e63j0x03_ltps_timming_set_0_60hz(struct s6e63j0x03 *ctx)
+{
+ s6e63j0x03_dcs_write_seq_static(ctx,
+ 0xf8, 0x08, 0x08, 0x08, 0x17, 0x00, 0x2a, 0x02,
+ 0x26, 0x00, 0x00, 0x02, 0x00, 0x00);
+}
+
+static void s6e63j0x03_ltps_timming_set_1(struct s6e63j0x03 *ctx)
+{
+ s6e63j0x03_dcs_write_seq_static(ctx, 0xf7, 0x02);
+}
+
+static void s6e63j0x03_param_pos_te_edge(struct s6e63j0x03 *ctx)
+{
+ s6e63j0x03_dcs_write_seq_static(ctx, 0xb0, 0x01);
+}
+
+static void s6e63j0x03_te_rising_edge(struct s6e63j0x03 *ctx)
+{
+ s6e63j0x03_dcs_write_seq_static(ctx, 0xe2, 0x0f);
+}
+
+static void s6e63j0x03_param_pos_default(struct s6e63j0x03 *ctx)
+{
+ s6e63j0x03_dcs_write_seq_static(ctx, 0xb0, 0x00);
+}
+
+static void s6e63j0x03_elvss_cond(struct s6e63j0x03 *ctx)
+{
+ s6e63j0x03_dcs_write_seq_static(ctx, 0xb1, 0x00, 0x09);
+}
+
+static void s6e63j0x03_set_pos(struct s6e63j0x03 *ctx)
+{
+ s6e63j0x03_dcs_write_seq_static(ctx, 0x36, 0x40);
+}
+
+static void s6e63j0x03_white_brightness_default(struct s6e63j0x03 *ctx)
+{
+ s6e63j0x03_dcs_write_seq_static(ctx, 0x51, 0xff);
+}
+
+static void s6e63j0x03_white_ctrl(struct s6e63j0x03 *ctx)
+{
+ s6e63j0x03_dcs_write_seq_static(ctx, 0x53, 0x20);
+}
+
+static void s6e63j0x03_acl_off(struct s6e63j0x03 *ctx)
+{
+ s6e63j0x03_dcs_write_seq_static(ctx, 0x55, 0x00);
+}
+
+static void s6e63j0x03_test_level_2_key_off(struct s6e63j0x03 *ctx)
+{
+ s6e63j0x03_dcs_write_seq_static(ctx, 0xf1, 0xa5, 0xa5);
+}
+
+static void s6e63j0x03_set_maximum_return_packet_size(struct s6e63j0x03 *ctx,
+ unsigned int size)
+{
+ struct mipi_dsi_device *dsi = to_mipi_dsi_device(ctx->dev);
+ const struct mipi_dsi_host_ops *ops = dsi->host->ops;
+
+ if (ops && ops->transfer) {
+ unsigned char buf[] = {size, 0};
+ struct mipi_dsi_msg msg = {
+ .channel = dsi->channel,
+ .type = MIPI_DSI_SET_MAXIMUM_RETURN_PACKET_SIZE,
+ .tx_len = sizeof(buf),
+ .tx_buf = buf
+ };
+
+ ops->transfer(dsi->host, &msg);
+ }
+}
+
+static void s6e63j0x03_read_mtp_id(struct s6e63j0x03 *ctx)
+{
+ unsigned char id[MTP_ID_LEN];
+ int ret;
+
+ s6e63j0x03_test_level_2_key_on(ctx);
+
+ s6e63j0x03_set_maximum_return_packet_size(ctx, MTP_ID_LEN);
+ ret = s6e63j0x03_dcs_read(ctx, MCS_MTP_ID, id, MTP_ID_LEN);
+
+ s6e63j0x03_test_level_2_key_off(ctx);
+
+ if (ret < MTP_ID_LEN || id[3] != 0x22) {
+ dev_err(ctx->dev, "failed to read id,\n");
+ return;
+ }
+
+ dev_info(ctx->dev, "ID: 0x%02x, 0x%02x, 0x%02x\n", id[3], id[2], id[5]);
+}
+
+static void s6e63j0x03_set_sequence(struct s6e63j0x03 *ctx)
+{
+ /* Test key enable */
+ s6e63j0x03_test_level_1_key_on(ctx);
+ s6e63j0x03_test_level_2_key_on(ctx);
+
+ s6e63j0x03_porch_adjustment(ctx);
+ s6e63j0x03_frame_freq(ctx);
+ s6e63j0x03_frame_freq(ctx);
+ s6e63j0x03_mem_addr_set_0(ctx);
+ s6e63j0x03_mem_addr_set_1(ctx);
+
+ s6e63j0x03_ltps_timming_set_0_60hz(ctx);
+ s6e63j0x03_ltps_timming_set_1(ctx);
+
+ s6e63j0x03_param_pos_te_edge(ctx);
+ s6e63j0x03_te_rising_edge(ctx);
+ s6e63j0x03_param_pos_default(ctx);
+
+ s6e63j0x03_dcs_write_seq_static(ctx, MIPI_DCS_EXIT_SLEEP_MODE);
+ msleep(120);
+
+ /* etc condition setting */
+ s6e63j0x03_elvss_cond(ctx);
+ s6e63j0x03_set_pos(ctx);
+
+ /* brightness setting */
+ s6e63j0x03_white_brightness_default(ctx);
+ s6e63j0x03_white_ctrl(ctx);
+ s6e63j0x03_acl_off(ctx);
+
+ s6e63j0x03_dcs_write_seq_static(ctx, MIPI_DCS_SET_TEAR_ON);
+ s6e63j0x03_test_level_2_key_off(ctx);
+
+ /* display on */
+ s6e63j0x03_dcs_write_seq_static(ctx, MIPI_DCS_SET_DISPLAY_ON);
+}
+
+static int s6e63j0x03_power_on(struct s6e63j0x03 *ctx)
+{
+ int ret;
+
+ ret = regulator_bulk_enable(ARRAY_SIZE(ctx->supplies), ctx->supplies);
+ if (ret < 0)
+ return ret;
+
+ usleep_range(ctx->power_on_delay * 1000,
+ (ctx->power_on_delay + 1) * 1000);
+
+ gpio_set_value(ctx->reset_gpio, 0);
+ usleep_range(1000, 2000);
+ gpio_set_value(ctx->reset_gpio, 1);
+
+ usleep_range(ctx->reset_delay * 1000,
+ (ctx->reset_delay + 1) * 1000);
+
+ return 0;
+}
+
+static int s6e63j0x03_power_off(struct s6e63j0x03 *ctx)
+{
+ int ret;
+
+ gpio_set_value(ctx->reset_gpio, 0);
+
+ ret = regulator_bulk_disable(ARRAY_SIZE(ctx->supplies), ctx->supplies);
+ if (ret < 0)
+ return ret;
+
+ return 0;
+}
+
+static int s6e63j0x03_disable(struct drm_panel *panel)
+{
+ struct s6e63j0x03 *ctx = panel_to_s6e63j0x03(panel);
+
+ s6e63j0x03_dcs_write_seq_static(ctx, MIPI_DCS_SET_DISPLAY_OFF);
+ s6e63j0x03_dcs_write_seq_static(ctx, MIPI_DCS_ENTER_SLEEP_MODE);
+
+ s6e63j0x03_clear_error(ctx);
+
+ usleep_range(ctx->power_off_delay * 1000,
+ (ctx->power_off_delay + 1) * 1000);
+
+ return s6e63j0x03_power_off(ctx);
+}
+
+static int s6e63j0x03_enable(struct drm_panel *panel)
+{
+ struct s6e63j0x03 *ctx = panel_to_s6e63j0x03(panel);
+ int ret;
+
+ ret = s6e63j0x03_power_on(ctx);
+ if (ret < 0)
+ return ret;
+
+ s6e63j0x03_read_mtp_id(ctx);
+
+ s6e63j0x03_set_sequence(ctx);
+ ret = ctx->error;
+
+ if (ret < 0)
+ s6e63j0x03_disable(panel);
+
+ return ret;
+}
+
+static int s6e63j0x03_get_modes(struct drm_panel *panel)
+{
+ struct drm_connector *connector = panel->connector;
+ struct s6e63j0x03 *ctx = panel_to_s6e63j0x03(panel);
+ struct drm_display_mode *mode;
+
+ mode = drm_mode_create(connector->dev);
+ if (!mode) {
+ DRM_ERROR("failed to create a new display mode\n");
+ return 0;
+ }
+
+ drm_display_mode_from_videomode(&ctx->vm, mode);
+ mode->width_mm = ctx->width_mm;
+ mode->height_mm = ctx->height_mm;
+ connector->display_info.width_mm = mode->width_mm;
+ connector->display_info.height_mm = mode->height_mm;
+
+ mode->type = DRM_MODE_TYPE_DRIVER | DRM_MODE_TYPE_PREFERRED;
+ drm_mode_probed_add(connector, mode);
+
+ return 1;
+}
+
+static const struct drm_panel_funcs s6e63j0x03_drm_funcs = {
+ .disable = s6e63j0x03_disable,
+ .enable = s6e63j0x03_enable,
+ .get_modes = s6e63j0x03_get_modes,
+};
+
+static int s6e63j0x03_parse_dt(struct s6e63j0x03 *ctx)
+{
+ struct device *dev = ctx->dev;
+ struct device_node *np = dev->of_node;
+ int ret;
+
+ ret = of_get_videomode(np, &ctx->vm, 0);
+ if (ret < 0)
+ return ret;
+
+ of_property_read_u32(np, "power-on-delay", &ctx->power_on_delay);
+ of_property_read_u32(np, "power-off-delay", &ctx->power_off_delay);
+ of_property_read_u32(np, "reset-delay", &ctx->reset_delay);
+ of_property_read_u32(np, "init-delay", &ctx->init_delay);
+
+ ctx->flip_horizontal = of_property_read_bool(np, "flip-horizontal");
+ ctx->flip_vertical = of_property_read_bool(np, "flip-vertical");
+
+
+ ctx->te_gpio = of_get_named_gpio(dev->of_node, "te-gpios", 0);
+ if (ctx->te_gpio < 0)
+ return ctx->te_gpio;
+
+ ret = devm_gpio_request(dev, ctx->te_gpio, "te-gpio");
+ if (ret) {
+ dev_err(dev, "failed to request te-gpio\n");
+ return ret;
+ }
+
+ return gpio_direction_input(ctx->te_gpio);
+}
+
+irqreturn_t s6e63j0x03_te_interrupt(int irq, void *dev_id)
+{
+ struct s6e63j0x03 *ctx = dev_id;
+ struct mipi_dsi_device *dsi = to_mipi_dsi_device(ctx->dev);
+ struct mipi_dsi_host *host = dsi->host;
+ const struct mipi_dsi_host_ops *ops = host->ops;
+
+ if (ops && ops->te_handler)
+ ops->te_handler(host);
+
+ return IRQ_HANDLED;
+}
+
+static int s6e63j0x03_probe(struct mipi_dsi_device *dsi)
+{
+ struct device *dev = &dsi->dev;
+ struct s6e63j0x03 *ctx;
+ int ret;
+
+ ctx = devm_kzalloc(dev, sizeof(struct s6e63j0x03), GFP_KERNEL);
+ if (!ctx)
+ return -ENOMEM;
+
+ mipi_dsi_set_drvdata(dsi, ctx);
+
+ ctx->dev = dev;
+
+ dsi->lanes = 1;
+ dsi->format = MIPI_DSI_FMT_RGB888;
+ dsi->mode_flags = MIPI_DSI_MODE_EOT_PACKET | MIPI_DSI_MODE_VIDEO_BURST;
+
+ ret = s6e63j0x03_parse_dt(ctx);
+ if (ret < 0)
+ return ret;
+
+ ctx->supplies[0].supply = "vdd3";
+ ctx->supplies[1].supply = "vci";
+ ret = devm_regulator_bulk_get(dev, ARRAY_SIZE(ctx->supplies),
+ ctx->supplies);
+ if (ret < 0) {
+ dev_err(dev, "failed to get regulators: %d\n", ret);
+ return ret;
+ }
+
+ ctx->reset_gpio = of_get_named_gpio(dev->of_node, "reset-gpios", 0);
+ if (ctx->reset_gpio < 0) {
+ dev_err(dev, "cannot get reset-gpios %d\n",
+ ctx->reset_gpio);
+ return ctx->reset_gpio;
+ }
+
+ ret = devm_gpio_request(dev, ctx->reset_gpio, "reset-gpio");
+ if (ret) {
+ dev_err(dev, "failed to request reset-gpio\n");
+ return ret;
+ }
+
+ ret = gpio_direction_output(ctx->reset_gpio, 1);
+ if (ret < 0) {
+ dev_err(dev, "cannot configure reset-gpios %d\n", ret);
+ return ret;
+ }
+
+ ret = devm_request_irq(ctx->dev, gpio_to_irq(ctx->te_gpio),
+ s6e63j0x03_te_interrupt,
+ IRQF_TRIGGER_RISING, "TE", ctx);
+ if (ret < 0) {
+ dev_err(dev, "failed to request te irq.\n");
+ return ret;
+ }
+
+ ctx->brightness = GAMMA_LEVEL_NUM - 1;
+
+ drm_panel_init(&ctx->panel);
+ ctx->panel.dev = dev;
+ ctx->panel.funcs = &s6e63j0x03_drm_funcs;
+
+ ret = drm_panel_add(&ctx->panel);
+ if (ret < 0)
+ return ret;
+
+ ret = mipi_dsi_attach(dsi);
+ if (ret < 0)
+ drm_panel_remove(&ctx->panel);
+
+ return ret;
+}
+
+static int s6e63j0x03_remove(struct mipi_dsi_device *dsi)
+{
+ struct s6e63j0x03 *ctx = mipi_dsi_get_drvdata(dsi);
+
+ mipi_dsi_detach(dsi);
+ drm_panel_remove(&ctx->panel);
+
+ return 0;
+}
+
+static struct of_device_id s6e63j0x03_of_match[] = {
+ { .compatible = "samsung,s6e63j0x03" },
+ { }
+};
+MODULE_DEVICE_TABLE(of, s6e63j0x03_of_match);
+
+static struct mipi_dsi_driver s6e63j0x03_driver = {
+ .probe = s6e63j0x03_probe,
+ .remove = s6e63j0x03_remove,
+ .driver = {
+ .name = "panel_s6e63j0x03",
+ .owner = THIS_MODULE,
+ .of_match_table = s6e63j0x03_of_match,
+ },
+};
+module_mipi_dsi_driver(s6e63j0x03_driver);
projects / platform / kernel / linux-3.10.git / commitdiff