diff options
Diffstat (limited to 'drivers/gpu/drm/panel/panel-innolux-p079zca.c')
| -rw-r--r-- | drivers/gpu/drm/panel/panel-innolux-p079zca.c | 550 |
1 files changed, 550 insertions, 0 deletions
diff --git a/drivers/gpu/drm/panel/panel-innolux-p079zca.c b/drivers/gpu/drm/panel/panel-innolux-p079zca.c new file mode 100644 index 0000000000..485178a999 --- /dev/null +++ b/drivers/gpu/drm/panel/panel-innolux-p079zca.c @@ -0,0 +1,550 @@ +// SPDX-License-Identifier: GPL-2.0-or-later +/* + * Copyright (c) 2017, Fuzhou Rockchip Electronics Co., Ltd + */ + +#include <linux/delay.h> +#include <linux/gpio/consumer.h> +#include <linux/module.h> +#include <linux/of.h> +#include <linux/regulator/consumer.h> + +#include <video/mipi_display.h> + +#include <drm/drm_crtc.h> +#include <drm/drm_device.h> +#include <drm/drm_mipi_dsi.h> +#include <drm/drm_modes.h> +#include <drm/drm_panel.h> + +struct panel_init_cmd { + size_t len; + const char *data; +}; + +#define _INIT_CMD(...) { \ + .len = sizeof((char[]){__VA_ARGS__}), \ + .data = (char[]){__VA_ARGS__} } + +struct panel_desc { + const struct drm_display_mode *mode; + unsigned int bpc; + struct { + unsigned int width; + unsigned int height; + } size; + + unsigned long flags; + enum mipi_dsi_pixel_format format; + const struct panel_init_cmd *init_cmds; + unsigned int lanes; + const char * const *supply_names; + unsigned int num_supplies; + unsigned int sleep_mode_delay; + unsigned int power_down_delay; +}; + +struct innolux_panel { + struct drm_panel base; + struct mipi_dsi_device *link; + const struct panel_desc *desc; + + struct regulator_bulk_data *supplies; + struct gpio_desc *enable_gpio; + + bool prepared; + bool enabled; +}; + +static inline struct innolux_panel *to_innolux_panel(struct drm_panel *panel) +{ + return container_of(panel, struct innolux_panel, base); +} + +static int innolux_panel_disable(struct drm_panel *panel) +{ + struct innolux_panel *innolux = to_innolux_panel(panel); + + if (!innolux->enabled) + return 0; + + innolux->enabled = false; + + return 0; +} + +static int innolux_panel_unprepare(struct drm_panel *panel) +{ + struct innolux_panel *innolux = to_innolux_panel(panel); + int err; + + if (!innolux->prepared) + return 0; + + err = mipi_dsi_dcs_set_display_off(innolux->link); + if (err < 0) + dev_err(panel->dev, "failed to set display off: %d\n", err); + + err = mipi_dsi_dcs_enter_sleep_mode(innolux->link); + if (err < 0) { + dev_err(panel->dev, "failed to enter sleep mode: %d\n", err); + return err; + } + + if (innolux->desc->sleep_mode_delay) + msleep(innolux->desc->sleep_mode_delay); + + gpiod_set_value_cansleep(innolux->enable_gpio, 0); + + if (innolux->desc->power_down_delay) + msleep(innolux->desc->power_down_delay); + + err = regulator_bulk_disable(innolux->desc->num_supplies, + innolux->supplies); + if (err < 0) + return err; + + innolux->prepared = false; + + return 0; +} + +static int innolux_panel_prepare(struct drm_panel *panel) +{ + struct innolux_panel *innolux = to_innolux_panel(panel); + int err; + + if (innolux->prepared) + return 0; + + gpiod_set_value_cansleep(innolux->enable_gpio, 0); + + err = regulator_bulk_enable(innolux->desc->num_supplies, + innolux->supplies); + if (err < 0) + return err; + + /* p079zca: t2 (20ms), p097pfg: t4 (15ms) */ + usleep_range(20000, 21000); + + gpiod_set_value_cansleep(innolux->enable_gpio, 1); + + /* p079zca: t4, p097pfg: t5 */ + usleep_range(20000, 21000); + + if (innolux->desc->init_cmds) { + const struct panel_init_cmd *cmds = + innolux->desc->init_cmds; + unsigned int i; + + for (i = 0; cmds[i].len != 0; i++) { + const struct panel_init_cmd *cmd = &cmds[i]; + + err = mipi_dsi_generic_write(innolux->link, cmd->data, + cmd->len); + if (err < 0) { + dev_err(panel->dev, "failed to write command %u\n", i); + goto poweroff; + } + + /* + * Included by random guessing, because without this + * (or at least, some delay), the panel sometimes + * didn't appear to pick up the command sequence. + */ + err = mipi_dsi_dcs_nop(innolux->link); + if (err < 0) { + dev_err(panel->dev, "failed to send DCS nop: %d\n", err); + goto poweroff; + } + } + } + + err = mipi_dsi_dcs_exit_sleep_mode(innolux->link); + if (err < 0) { + dev_err(panel->dev, "failed to exit sleep mode: %d\n", err); + goto poweroff; + } + + /* T6: 120ms - 1000ms*/ + msleep(120); + + err = mipi_dsi_dcs_set_display_on(innolux->link); + if (err < 0) { + dev_err(panel->dev, "failed to set display on: %d\n", err); + goto poweroff; + } + + /* T7: 5ms */ + usleep_range(5000, 6000); + + innolux->prepared = true; + + return 0; + +poweroff: + gpiod_set_value_cansleep(innolux->enable_gpio, 0); + regulator_bulk_disable(innolux->desc->num_supplies, innolux->supplies); + + return err; +} + +static int innolux_panel_enable(struct drm_panel *panel) +{ + struct innolux_panel *innolux = to_innolux_panel(panel); + + if (innolux->enabled) + return 0; + + innolux->enabled = true; + + return 0; +} + +static const char * const innolux_p079zca_supply_names[] = { + "power", +}; + +static const struct drm_display_mode innolux_p079zca_mode = { + .clock = 56900, + .hdisplay = 768, + .hsync_start = 768 + 40, + .hsync_end = 768 + 40 + 40, + .htotal = 768 + 40 + 40 + 40, + .vdisplay = 1024, + .vsync_start = 1024 + 20, + .vsync_end = 1024 + 20 + 4, + .vtotal = 1024 + 20 + 4 + 20, +}; + +static const struct panel_desc innolux_p079zca_panel_desc = { + .mode = &innolux_p079zca_mode, + .bpc = 8, + .size = { + .width = 120, + .height = 160, + }, + .flags = MIPI_DSI_MODE_VIDEO | MIPI_DSI_MODE_VIDEO_SYNC_PULSE | + MIPI_DSI_MODE_LPM, + .format = MIPI_DSI_FMT_RGB888, + .lanes = 4, + .supply_names = innolux_p079zca_supply_names, + .num_supplies = ARRAY_SIZE(innolux_p079zca_supply_names), + .power_down_delay = 80, /* T8: 80ms - 1000ms */ +}; + +static const char * const innolux_p097pfg_supply_names[] = { + "avdd", + "avee", +}; + +static const struct drm_display_mode innolux_p097pfg_mode = { + .clock = 229000, + .hdisplay = 1536, + .hsync_start = 1536 + 100, + .hsync_end = 1536 + 100 + 24, + .htotal = 1536 + 100 + 24 + 100, + .vdisplay = 2048, + .vsync_start = 2048 + 100, + .vsync_end = 2048 + 100 + 2, + .vtotal = 2048 + 100 + 2 + 18, +}; + +/* + * Display manufacturer failed to provide init sequencing according to + * https://chromium-review.googlesource.com/c/chromiumos/third_party/coreboot/+/892065/ + * so the init sequence stems from a register dump of a working panel. + */ +static const struct panel_init_cmd innolux_p097pfg_init_cmds[] = { + /* page 0 */ + _INIT_CMD(0xF0, 0x55, 0xAA, 0x52, 0x08, 0x00), + _INIT_CMD(0xB1, 0xE8, 0x11), + _INIT_CMD(0xB2, 0x25, 0x02), + _INIT_CMD(0xB5, 0x08, 0x00), + _INIT_CMD(0xBC, 0x0F, 0x00), + _INIT_CMD(0xB8, 0x03, 0x06, 0x00, 0x00), + _INIT_CMD(0xBD, 0x01, 0x90, 0x14, 0x14), + _INIT_CMD(0x6F, 0x01), + _INIT_CMD(0xC0, 0x03), + _INIT_CMD(0x6F, 0x02), + _INIT_CMD(0xC1, 0x0D), + _INIT_CMD(0xD9, 0x01, 0x09, 0x70), + _INIT_CMD(0xC5, 0x12, 0x21, 0x00), + _INIT_CMD(0xBB, 0x93, 0x93), + + /* page 1 */ + _INIT_CMD(0xF0, 0x55, 0xAA, 0x52, 0x08, 0x01), + _INIT_CMD(0xB3, 0x3C, 0x3C), + _INIT_CMD(0xB4, 0x0F, 0x0F), + _INIT_CMD(0xB9, 0x45, 0x45), + _INIT_CMD(0xBA, 0x14, 0x14), + _INIT_CMD(0xCA, 0x02), + _INIT_CMD(0xCE, 0x04), + _INIT_CMD(0xC3, 0x9B, 0x9B), + _INIT_CMD(0xD8, 0xC0, 0x03), + _INIT_CMD(0xBC, 0x82, 0x01), + _INIT_CMD(0xBD, 0x9E, 0x01), + + /* page 2 */ + _INIT_CMD(0xF0, 0x55, 0xAA, 0x52, 0x08, 0x02), + _INIT_CMD(0xB0, 0x82), + _INIT_CMD(0xD1, 0x00, 0x00, 0x00, 0x3E, 0x00, 0x82, 0x00, 0xA5, + 0x00, 0xC1, 0x00, 0xEA, 0x01, 0x0D, 0x01, 0x40), + _INIT_CMD(0xD2, 0x01, 0x6A, 0x01, 0xA8, 0x01, 0xDC, 0x02, 0x29, + 0x02, 0x67, 0x02, 0x68, 0x02, 0xA8, 0x02, 0xF0), + _INIT_CMD(0xD3, 0x03, 0x19, 0x03, 0x49, 0x03, 0x67, 0x03, 0x8C, + 0x03, 0xA6, 0x03, 0xC7, 0x03, 0xDE, 0x03, 0xEC), + _INIT_CMD(0xD4, 0x03, 0xFF, 0x03, 0xFF), + _INIT_CMD(0xE0, 0x00, 0x00, 0x00, 0x86, 0x00, 0xC5, 0x00, 0xE5, + 0x00, 0xFF, 0x01, 0x26, 0x01, 0x45, 0x01, 0x75), + _INIT_CMD(0xE1, 0x01, 0x9C, 0x01, 0xD5, 0x02, 0x05, 0x02, 0x4D, + 0x02, 0x86, 0x02, 0x87, 0x02, 0xC3, 0x03, 0x03), + _INIT_CMD(0xE2, 0x03, 0x2A, 0x03, 0x56, 0x03, 0x72, 0x03, 0x94, + 0x03, 0xAC, 0x03, 0xCB, 0x03, 0xE0, 0x03, 0xED), + _INIT_CMD(0xE3, 0x03, 0xFF, 0x03, 0xFF), + + /* page 3 */ + _INIT_CMD(0xF0, 0x55, 0xAA, 0x52, 0x08, 0x03), + _INIT_CMD(0xB0, 0x00, 0x00, 0x00, 0x00), + _INIT_CMD(0xB1, 0x00, 0x00, 0x00, 0x00), + _INIT_CMD(0xB2, 0x00, 0x00, 0x06, 0x04, 0x01, 0x40, 0x85), + _INIT_CMD(0xB3, 0x10, 0x07, 0xFC, 0x04, 0x01, 0x40, 0x80), + _INIT_CMD(0xB6, 0xF0, 0x08, 0x00, 0x04, 0x00, 0x00, 0x00, 0x01, + 0x40, 0x80), + _INIT_CMD(0xBA, 0xC5, 0x07, 0x00, 0x04, 0x11, 0x25, 0x8C), + _INIT_CMD(0xBB, 0xC5, 0x07, 0x00, 0x03, 0x11, 0x25, 0x8C), + _INIT_CMD(0xC0, 0x00, 0x3C, 0x00, 0x00, 0x00, 0x80, 0x80), + _INIT_CMD(0xC1, 0x00, 0x3C, 0x00, 0x00, 0x00, 0x80, 0x80), + _INIT_CMD(0xC4, 0x00, 0x00), + _INIT_CMD(0xEF, 0x41), + + /* page 4 */ + _INIT_CMD(0xF0, 0x55, 0xAA, 0x52, 0x08, 0x04), + _INIT_CMD(0xEC, 0x4C), + + /* page 5 */ + _INIT_CMD(0xF0, 0x55, 0xAA, 0x52, 0x08, 0x05), + _INIT_CMD(0xB0, 0x13, 0x03, 0x03, 0x01), + _INIT_CMD(0xB1, 0x30, 0x00), + _INIT_CMD(0xB2, 0x02, 0x02, 0x00), + _INIT_CMD(0xB3, 0x82, 0x23, 0x82, 0x9D), + _INIT_CMD(0xB4, 0xC5, 0x75, 0x24, 0x57), + _INIT_CMD(0xB5, 0x00, 0xD4, 0x72, 0x11, 0x11, 0xAB, 0x0A), + _INIT_CMD(0xB6, 0x00, 0x00, 0xD5, 0x72, 0x24, 0x56), + _INIT_CMD(0xB7, 0x5C, 0xDC, 0x5C, 0x5C), + _INIT_CMD(0xB9, 0x0C, 0x00, 0x00, 0x01, 0x00), + _INIT_CMD(0xC0, 0x75, 0x11, 0x11, 0x54, 0x05), + _INIT_CMD(0xC6, 0x00, 0x00, 0x00, 0x00), + _INIT_CMD(0xD0, 0x00, 0x48, 0x08, 0x00, 0x00), + _INIT_CMD(0xD1, 0x00, 0x48, 0x09, 0x00, 0x00), + + /* page 6 */ + _INIT_CMD(0xF0, 0x55, 0xAA, 0x52, 0x08, 0x06), + _INIT_CMD(0xB0, 0x02, 0x32, 0x32, 0x08, 0x2F), + _INIT_CMD(0xB1, 0x2E, 0x15, 0x14, 0x13, 0x12), + _INIT_CMD(0xB2, 0x11, 0x10, 0x00, 0x3D, 0x3D), + _INIT_CMD(0xB3, 0x3D, 0x3D, 0x3D, 0x3D, 0x3D), + _INIT_CMD(0xB4, 0x3D, 0x32), + _INIT_CMD(0xB5, 0x03, 0x32, 0x32, 0x09, 0x2F), + _INIT_CMD(0xB6, 0x2E, 0x1B, 0x1A, 0x19, 0x18), + _INIT_CMD(0xB7, 0x17, 0x16, 0x01, 0x3D, 0x3D), + _INIT_CMD(0xB8, 0x3D, 0x3D, 0x3D, 0x3D, 0x3D), + _INIT_CMD(0xB9, 0x3D, 0x32), + _INIT_CMD(0xC0, 0x01, 0x32, 0x32, 0x09, 0x2F), + _INIT_CMD(0xC1, 0x2E, 0x1A, 0x1B, 0x16, 0x17), + _INIT_CMD(0xC2, 0x18, 0x19, 0x03, 0x3D, 0x3D), + _INIT_CMD(0xC3, 0x3D, 0x3D, 0x3D, 0x3D, 0x3D), + _INIT_CMD(0xC4, 0x3D, 0x32), + _INIT_CMD(0xC5, 0x00, 0x32, 0x32, 0x08, 0x2F), + _INIT_CMD(0xC6, 0x2E, 0x14, 0x15, 0x10, 0x11), + _INIT_CMD(0xC7, 0x12, 0x13, 0x02, 0x3D, 0x3D), + _INIT_CMD(0xC8, 0x3D, 0x3D, 0x3D, 0x3D, 0x3D), + _INIT_CMD(0xC9, 0x3D, 0x32), + + {}, +}; + +static const struct panel_desc innolux_p097pfg_panel_desc = { + .mode = &innolux_p097pfg_mode, + .bpc = 8, + .size = { + .width = 147, + .height = 196, + }, + .flags = MIPI_DSI_MODE_VIDEO | MIPI_DSI_MODE_VIDEO_SYNC_PULSE | + MIPI_DSI_MODE_LPM, + .format = MIPI_DSI_FMT_RGB888, + .init_cmds = innolux_p097pfg_init_cmds, + .lanes = 4, + .supply_names = innolux_p097pfg_supply_names, + .num_supplies = ARRAY_SIZE(innolux_p097pfg_supply_names), + .sleep_mode_delay = 100, /* T15 */ +}; + +static int innolux_panel_get_modes(struct drm_panel *panel, + struct drm_connector *connector) +{ + struct innolux_panel *innolux = to_innolux_panel(panel); + const struct drm_display_mode *m = innolux->desc->mode; + struct drm_display_mode *mode; + + mode = drm_mode_duplicate(connector->dev, m); + if (!mode) { + dev_err(panel->dev, "failed to add mode %ux%u@%u\n", + m->hdisplay, m->vdisplay, drm_mode_vrefresh(m)); + return -ENOMEM; + } + + drm_mode_set_name(mode); + + drm_mode_probed_add(connector, mode); + + connector->display_info.width_mm = innolux->desc->size.width; + connector->display_info.height_mm = innolux->desc->size.height; + connector->display_info.bpc = innolux->desc->bpc; + + return 1; +} + +static const struct drm_panel_funcs innolux_panel_funcs = { + .disable = innolux_panel_disable, + .unprepare = innolux_panel_unprepare, + .prepare = innolux_panel_prepare, + .enable = innolux_panel_enable, + .get_modes = innolux_panel_get_modes, +}; + +static const struct of_device_id innolux_of_match[] = { + { .compatible = "innolux,p079zca", + .data = &innolux_p079zca_panel_desc + }, + { .compatible = "innolux,p097pfg", + .data = &innolux_p097pfg_panel_desc + }, + { } +}; +MODULE_DEVICE_TABLE(of, innolux_of_match); + +static int innolux_panel_add(struct mipi_dsi_device *dsi, + const struct panel_desc *desc) +{ + struct innolux_panel *innolux; + struct device *dev = &dsi->dev; + int err, i; + + innolux = devm_kzalloc(dev, sizeof(*innolux), GFP_KERNEL); + if (!innolux) + return -ENOMEM; + + innolux->desc = desc; + + innolux->supplies = devm_kcalloc(dev, desc->num_supplies, + sizeof(*innolux->supplies), + GFP_KERNEL); + if (!innolux->supplies) + return -ENOMEM; + + for (i = 0; i < desc->num_supplies; i++) + innolux->supplies[i].supply = desc->supply_names[i]; + + err = devm_regulator_bulk_get(dev, desc->num_supplies, + innolux->supplies); + if (err < 0) + return err; + + innolux->enable_gpio = devm_gpiod_get_optional(dev, "enable", + GPIOD_OUT_HIGH); + if (IS_ERR(innolux->enable_gpio)) { + err = PTR_ERR(innolux->enable_gpio); + dev_dbg(dev, "failed to get enable gpio: %d\n", err); + innolux->enable_gpio = NULL; + } + + drm_panel_init(&innolux->base, dev, &innolux_panel_funcs, + DRM_MODE_CONNECTOR_DSI); + + err = drm_panel_of_backlight(&innolux->base); + if (err) + return err; + + drm_panel_add(&innolux->base); + + mipi_dsi_set_drvdata(dsi, innolux); + innolux->link = dsi; + + return 0; +} + +static void innolux_panel_del(struct innolux_panel *innolux) +{ + drm_panel_remove(&innolux->base); +} + +static int innolux_panel_probe(struct mipi_dsi_device *dsi) +{ + const struct panel_desc *desc; + struct innolux_panel *innolux; + int err; + + desc = of_device_get_match_data(&dsi->dev); + dsi->mode_flags = desc->flags; + dsi->format = desc->format; + dsi->lanes = desc->lanes; + + err = innolux_panel_add(dsi, desc); + if (err < 0) + return err; + + err = mipi_dsi_attach(dsi); + if (err < 0) { + innolux = mipi_dsi_get_drvdata(dsi); + innolux_panel_del(innolux); + return err; + } + + return 0; +} + +static void innolux_panel_remove(struct mipi_dsi_device *dsi) +{ + struct innolux_panel *innolux = mipi_dsi_get_drvdata(dsi); + int err; + + err = drm_panel_unprepare(&innolux->base); + if (err < 0) + dev_err(&dsi->dev, "failed to unprepare panel: %d\n", err); + + err = drm_panel_disable(&innolux->base); + if (err < 0) + dev_err(&dsi->dev, "failed to disable panel: %d\n", err); + + err = mipi_dsi_detach(dsi); + if (err < 0) + dev_err(&dsi->dev, "failed to detach from DSI host: %d\n", err); + + innolux_panel_del(innolux); +} + +static void innolux_panel_shutdown(struct mipi_dsi_device *dsi) +{ + struct innolux_panel *innolux = mipi_dsi_get_drvdata(dsi); + + drm_panel_unprepare(&innolux->base); + drm_panel_disable(&innolux->base); +} + +static struct mipi_dsi_driver innolux_panel_driver = { + .driver = { + .name = "panel-innolux-p079zca", + .of_match_table = innolux_of_match, + }, + .probe = innolux_panel_probe, + .remove = innolux_panel_remove, + .shutdown = innolux_panel_shutdown, +}; +module_mipi_dsi_driver(innolux_panel_driver); + +MODULE_AUTHOR("Chris Zhong <zyw@rock-chips.com>"); +MODULE_AUTHOR("Lin Huang <hl@rock-chips.com>"); +MODULE_DESCRIPTION("Innolux P079ZCA panel driver"); +MODULE_LICENSE("GPL v2"); |