diff options
author | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-05-18 17:35:05 +0000 |
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committer | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-05-18 17:39:31 +0000 |
commit | 85c675d0d09a45a135bddd15d7b385f8758c32fb (patch) | |
tree | 76267dbc9b9a130337be3640948fe397b04ac629 /drivers/gpu/drm/panel/panel-ilitek-ili9882t.c | |
parent | Adding upstream version 6.6.15. (diff) | |
download | linux-85c675d0d09a45a135bddd15d7b385f8758c32fb.tar.xz linux-85c675d0d09a45a135bddd15d7b385f8758c32fb.zip |
Adding upstream version 6.7.7.upstream/6.7.7
Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
Diffstat (limited to 'drivers/gpu/drm/panel/panel-ilitek-ili9882t.c')
-rw-r--r-- | drivers/gpu/drm/panel/panel-ilitek-ili9882t.c | 779 |
1 files changed, 779 insertions, 0 deletions
diff --git a/drivers/gpu/drm/panel/panel-ilitek-ili9882t.c b/drivers/gpu/drm/panel/panel-ilitek-ili9882t.c new file mode 100644 index 0000000000..267a530704 --- /dev/null +++ b/drivers/gpu/drm/panel/panel-ilitek-ili9882t.c @@ -0,0 +1,779 @@ +// SPDX-License-Identifier: GPL-2.0 +/* + * Panels based on the Ilitek ILI9882T display controller. + */ +#include <linux/delay.h> +#include <linux/gpio/consumer.h> +#include <linux/module.h> +#include <linux/of.h> +#include <linux/regulator/consumer.h> + +#include <drm/drm_connector.h> +#include <drm/drm_crtc.h> +#include <drm/drm_mipi_dsi.h> +#include <drm/drm_panel.h> + +#include <video/mipi_display.h> + +/* + * Use this descriptor struct to describe different panels using the + * Ilitek ILI9882T display controller. + */ +struct panel_desc { + const struct drm_display_mode *modes; + unsigned int bpc; + + /** + * @width_mm: width of the panel's active display area + * @height_mm: height of the panel's active display area + */ + struct { + unsigned int width_mm; + unsigned int height_mm; + } size; + + unsigned long mode_flags; + enum mipi_dsi_pixel_format format; + const struct panel_init_cmd *init_cmds; + unsigned int lanes; +}; + +struct ili9882t { + struct drm_panel base; + struct mipi_dsi_device *dsi; + + const struct panel_desc *desc; + + enum drm_panel_orientation orientation; + struct regulator *pp3300; + struct regulator *pp1800; + struct regulator *avee; + struct regulator *avdd; + struct gpio_desc *enable_gpio; +}; + +enum dsi_cmd_type { + INIT_DCS_CMD, + DELAY_CMD, +}; + +struct panel_init_cmd { + enum dsi_cmd_type type; + size_t len; + const char *data; +}; + +#define _INIT_DCS_CMD(...) { \ + .type = INIT_DCS_CMD, \ + .len = sizeof((char[]){__VA_ARGS__}), \ + .data = (char[]){__VA_ARGS__} } + +#define _INIT_DELAY_CMD(...) { \ + .type = DELAY_CMD,\ + .len = sizeof((char[]){__VA_ARGS__}), \ + .data = (char[]){__VA_ARGS__} } + +/* ILI9882-specific commands, add new commands as you decode them */ +#define ILI9882T_DCS_SWITCH_PAGE 0xFF + +#define _INIT_SWITCH_PAGE_CMD(page) \ + _INIT_DCS_CMD(ILI9882T_DCS_SWITCH_PAGE, 0x98, 0x82, (page)) + +static const struct panel_init_cmd starry_ili9882t_init_cmd[] = { + _INIT_DELAY_CMD(5), + _INIT_SWITCH_PAGE_CMD(0x01), + _INIT_DCS_CMD(0x00, 0x42), + _INIT_DCS_CMD(0x01, 0x11), + _INIT_DCS_CMD(0x02, 0x00), + _INIT_DCS_CMD(0x03, 0x00), + + _INIT_DCS_CMD(0x04, 0x01), + _INIT_DCS_CMD(0x05, 0x11), + _INIT_DCS_CMD(0x06, 0x00), + _INIT_DCS_CMD(0x07, 0x00), + + _INIT_DCS_CMD(0x08, 0x80), + _INIT_DCS_CMD(0x09, 0x81), + _INIT_DCS_CMD(0x0A, 0x71), + _INIT_DCS_CMD(0x0B, 0x00), + + _INIT_DCS_CMD(0x0C, 0x00), + _INIT_DCS_CMD(0x0E, 0x1A), + + _INIT_DCS_CMD(0x24, 0x00), + _INIT_DCS_CMD(0x25, 0x00), + _INIT_DCS_CMD(0x26, 0x00), + _INIT_DCS_CMD(0x27, 0x00), + + _INIT_DCS_CMD(0x2C, 0xD4), + _INIT_DCS_CMD(0xB9, 0x40), + + _INIT_DCS_CMD(0xB0, 0x11), + + _INIT_DCS_CMD(0xE6, 0x32), + _INIT_DCS_CMD(0xD1, 0x30), + + _INIT_DCS_CMD(0xD6, 0x55), + + _INIT_DCS_CMD(0xD0, 0x01), + _INIT_DCS_CMD(0xE3, 0x93), + _INIT_DCS_CMD(0xE4, 0x00), + _INIT_DCS_CMD(0xE5, 0x80), + + _INIT_DCS_CMD(0x31, 0x07), + _INIT_DCS_CMD(0x32, 0x07), + _INIT_DCS_CMD(0x33, 0x07), + _INIT_DCS_CMD(0x34, 0x07), + _INIT_DCS_CMD(0x35, 0x07), + _INIT_DCS_CMD(0x36, 0x01), + _INIT_DCS_CMD(0x37, 0x00), + _INIT_DCS_CMD(0x38, 0x28), + _INIT_DCS_CMD(0x39, 0x29), + _INIT_DCS_CMD(0x3A, 0x11), + _INIT_DCS_CMD(0x3B, 0x13), + _INIT_DCS_CMD(0x3C, 0x15), + _INIT_DCS_CMD(0x3D, 0x17), + _INIT_DCS_CMD(0x3E, 0x09), + _INIT_DCS_CMD(0x3F, 0x0D), + _INIT_DCS_CMD(0x40, 0x02), + _INIT_DCS_CMD(0x41, 0x02), + _INIT_DCS_CMD(0x42, 0x02), + _INIT_DCS_CMD(0x43, 0x02), + _INIT_DCS_CMD(0x44, 0x02), + _INIT_DCS_CMD(0x45, 0x02), + _INIT_DCS_CMD(0x46, 0x02), + + _INIT_DCS_CMD(0x47, 0x07), + _INIT_DCS_CMD(0x48, 0x07), + _INIT_DCS_CMD(0x49, 0x07), + _INIT_DCS_CMD(0x4A, 0x07), + _INIT_DCS_CMD(0x4B, 0x07), + _INIT_DCS_CMD(0x4C, 0x01), + _INIT_DCS_CMD(0x4D, 0x00), + _INIT_DCS_CMD(0x4E, 0x28), + _INIT_DCS_CMD(0x4F, 0x29), + _INIT_DCS_CMD(0x50, 0x10), + _INIT_DCS_CMD(0x51, 0x12), + _INIT_DCS_CMD(0x52, 0x14), + _INIT_DCS_CMD(0x53, 0x16), + _INIT_DCS_CMD(0x54, 0x08), + _INIT_DCS_CMD(0x55, 0x0C), + _INIT_DCS_CMD(0x56, 0x02), + _INIT_DCS_CMD(0x57, 0x02), + _INIT_DCS_CMD(0x58, 0x02), + _INIT_DCS_CMD(0x59, 0x02), + _INIT_DCS_CMD(0x5A, 0x02), + _INIT_DCS_CMD(0x5B, 0x02), + _INIT_DCS_CMD(0x5C, 0x02), + + _INIT_DCS_CMD(0x61, 0x07), + _INIT_DCS_CMD(0x62, 0x07), + _INIT_DCS_CMD(0x63, 0x07), + _INIT_DCS_CMD(0x64, 0x07), + _INIT_DCS_CMD(0x65, 0x07), + _INIT_DCS_CMD(0x66, 0x01), + _INIT_DCS_CMD(0x67, 0x00), + _INIT_DCS_CMD(0x68, 0x28), + _INIT_DCS_CMD(0x69, 0x29), + _INIT_DCS_CMD(0x6A, 0x16), + _INIT_DCS_CMD(0x6B, 0x14), + _INIT_DCS_CMD(0x6C, 0x12), + _INIT_DCS_CMD(0x6D, 0x10), + _INIT_DCS_CMD(0x6E, 0x0C), + _INIT_DCS_CMD(0x6F, 0x08), + _INIT_DCS_CMD(0x70, 0x02), + _INIT_DCS_CMD(0x71, 0x02), + _INIT_DCS_CMD(0x72, 0x02), + _INIT_DCS_CMD(0x73, 0x02), + _INIT_DCS_CMD(0x74, 0x02), + _INIT_DCS_CMD(0x75, 0x02), + _INIT_DCS_CMD(0x76, 0x02), + + _INIT_DCS_CMD(0x77, 0x07), + _INIT_DCS_CMD(0x78, 0x07), + _INIT_DCS_CMD(0x79, 0x07), + _INIT_DCS_CMD(0x7A, 0x07), + _INIT_DCS_CMD(0x7B, 0x07), + _INIT_DCS_CMD(0x7C, 0x01), + _INIT_DCS_CMD(0x7D, 0x00), + _INIT_DCS_CMD(0x7E, 0x28), + _INIT_DCS_CMD(0x7F, 0x29), + _INIT_DCS_CMD(0x80, 0x17), + _INIT_DCS_CMD(0x81, 0x15), + _INIT_DCS_CMD(0x82, 0x13), + _INIT_DCS_CMD(0x83, 0x11), + _INIT_DCS_CMD(0x84, 0x0D), + _INIT_DCS_CMD(0x85, 0x09), + _INIT_DCS_CMD(0x86, 0x02), + _INIT_DCS_CMD(0x87, 0x07), + _INIT_DCS_CMD(0x88, 0x07), + _INIT_DCS_CMD(0x89, 0x07), + _INIT_DCS_CMD(0x8A, 0x07), + _INIT_DCS_CMD(0x8B, 0x07), + _INIT_DCS_CMD(0x8C, 0x07), + + _INIT_SWITCH_PAGE_CMD(0x02), + _INIT_DCS_CMD(0x29, 0x3A), + _INIT_DCS_CMD(0x2A, 0x3B), + + _INIT_DCS_CMD(0x06, 0x01), + _INIT_DCS_CMD(0x07, 0x01), + _INIT_DCS_CMD(0x08, 0x0C), + _INIT_DCS_CMD(0x09, 0x44), + + _INIT_DCS_CMD(0x3C, 0x0A), + _INIT_DCS_CMD(0x39, 0x11), + _INIT_DCS_CMD(0x3D, 0x00), + _INIT_DCS_CMD(0x3A, 0x0C), + _INIT_DCS_CMD(0x3B, 0x44), + + _INIT_DCS_CMD(0x53, 0x1F), + _INIT_DCS_CMD(0x5E, 0x40), + _INIT_DCS_CMD(0x84, 0x00), + + _INIT_SWITCH_PAGE_CMD(0x03), + _INIT_DCS_CMD(0x20, 0x01), + _INIT_DCS_CMD(0x21, 0x3C), + _INIT_DCS_CMD(0x22, 0xFA), + + _INIT_SWITCH_PAGE_CMD(0x0A), + _INIT_DCS_CMD(0xE0, 0x01), + _INIT_DCS_CMD(0xE2, 0x01), + _INIT_DCS_CMD(0xE5, 0x91), + _INIT_DCS_CMD(0xE6, 0x3C), + _INIT_DCS_CMD(0xE7, 0x00), + _INIT_DCS_CMD(0xE8, 0xFA), + + _INIT_SWITCH_PAGE_CMD(0x12), + _INIT_DCS_CMD(0x87, 0x2C), + + _INIT_SWITCH_PAGE_CMD(0x05), + _INIT_DCS_CMD(0x73, 0xE5), + _INIT_DCS_CMD(0x7F, 0x6B), + _INIT_DCS_CMD(0x6D, 0xA4), + _INIT_DCS_CMD(0x79, 0x54), + _INIT_DCS_CMD(0x69, 0x97), + _INIT_DCS_CMD(0x6A, 0x97), + _INIT_DCS_CMD(0xA5, 0x3F), + _INIT_DCS_CMD(0x61, 0xDA), + _INIT_DCS_CMD(0xA7, 0xF1), + _INIT_DCS_CMD(0x5F, 0x01), + _INIT_DCS_CMD(0x62, 0x3F), + _INIT_DCS_CMD(0x1D, 0x90), + _INIT_DCS_CMD(0x86, 0x87), + + _INIT_SWITCH_PAGE_CMD(0x06), + _INIT_DCS_CMD(0xC0, 0x80), + _INIT_DCS_CMD(0xC1, 0x07), + _INIT_DCS_CMD(0xCA, 0x58), + _INIT_DCS_CMD(0xCB, 0x02), + _INIT_DCS_CMD(0xCE, 0x58), + _INIT_DCS_CMD(0xCF, 0x02), + _INIT_DCS_CMD(0x67, 0x60), + _INIT_DCS_CMD(0x10, 0x00), + _INIT_DCS_CMD(0x92, 0x22), + _INIT_DCS_CMD(0xD3, 0x08), + _INIT_DCS_CMD(0xD6, 0x55), + _INIT_DCS_CMD(0xDC, 0x38), + + _INIT_SWITCH_PAGE_CMD(0x08), + _INIT_DCS_CMD(0xE0, 0x00, 0x10, 0x2A, 0x4D, 0x61, 0x56, 0x6A, 0x6E, 0x79, 0x76, 0x8F, 0x95, 0x98, 0xAE, 0xAA, 0xB2, 0xBB, 0xCE, 0xC6, 0xBD, 0xD5, 0xE2, 0xE8), + _INIT_DCS_CMD(0xE1, 0x00, 0x10, 0x2A, 0x4D, 0x61, 0x56, 0x6A, 0x6E, 0x79, 0x76, 0x8F, 0x95, 0x98, 0xAE, 0xAA, 0xB2, 0xBB, 0xCE, 0xC6, 0xBD, 0xD5, 0xE2, 0xE8), + + _INIT_SWITCH_PAGE_CMD(0x04), + _INIT_DCS_CMD(0xBA, 0x81), + + _INIT_SWITCH_PAGE_CMD(0x0C), + _INIT_DCS_CMD(0x00, 0x02), + _INIT_DCS_CMD(0x01, 0x00), + _INIT_DCS_CMD(0x02, 0x03), + _INIT_DCS_CMD(0x03, 0x01), + _INIT_DCS_CMD(0x04, 0x03), + _INIT_DCS_CMD(0x05, 0x02), + _INIT_DCS_CMD(0x06, 0x04), + _INIT_DCS_CMD(0x07, 0x03), + _INIT_DCS_CMD(0x08, 0x03), + _INIT_DCS_CMD(0x09, 0x04), + _INIT_DCS_CMD(0x0A, 0x04), + _INIT_DCS_CMD(0x0B, 0x05), + _INIT_DCS_CMD(0x0C, 0x04), + _INIT_DCS_CMD(0x0D, 0x06), + _INIT_DCS_CMD(0x0E, 0x05), + _INIT_DCS_CMD(0x0F, 0x07), + _INIT_DCS_CMD(0x10, 0x04), + _INIT_DCS_CMD(0x11, 0x08), + _INIT_DCS_CMD(0x12, 0x05), + _INIT_DCS_CMD(0x13, 0x09), + _INIT_DCS_CMD(0x14, 0x05), + _INIT_DCS_CMD(0x15, 0x0A), + _INIT_DCS_CMD(0x16, 0x06), + _INIT_DCS_CMD(0x17, 0x0B), + _INIT_DCS_CMD(0x18, 0x05), + _INIT_DCS_CMD(0x19, 0x0C), + _INIT_DCS_CMD(0x1A, 0x06), + _INIT_DCS_CMD(0x1B, 0x0D), + _INIT_DCS_CMD(0x1C, 0x06), + _INIT_DCS_CMD(0x1D, 0x0E), + _INIT_DCS_CMD(0x1E, 0x07), + _INIT_DCS_CMD(0x1F, 0x0F), + _INIT_DCS_CMD(0x20, 0x06), + _INIT_DCS_CMD(0x21, 0x10), + _INIT_DCS_CMD(0x22, 0x07), + _INIT_DCS_CMD(0x23, 0x11), + _INIT_DCS_CMD(0x24, 0x07), + _INIT_DCS_CMD(0x25, 0x12), + _INIT_DCS_CMD(0x26, 0x08), + _INIT_DCS_CMD(0x27, 0x13), + _INIT_DCS_CMD(0x28, 0x07), + _INIT_DCS_CMD(0x29, 0x14), + _INIT_DCS_CMD(0x2A, 0x08), + _INIT_DCS_CMD(0x2B, 0x15), + _INIT_DCS_CMD(0x2C, 0x08), + _INIT_DCS_CMD(0x2D, 0x16), + _INIT_DCS_CMD(0x2E, 0x09), + _INIT_DCS_CMD(0x2F, 0x17), + _INIT_DCS_CMD(0x30, 0x08), + _INIT_DCS_CMD(0x31, 0x18), + _INIT_DCS_CMD(0x32, 0x09), + _INIT_DCS_CMD(0x33, 0x19), + _INIT_DCS_CMD(0x34, 0x09), + _INIT_DCS_CMD(0x35, 0x1A), + _INIT_DCS_CMD(0x36, 0x0A), + _INIT_DCS_CMD(0x37, 0x1B), + _INIT_DCS_CMD(0x38, 0x0A), + _INIT_DCS_CMD(0x39, 0x1C), + _INIT_DCS_CMD(0x3A, 0x0A), + _INIT_DCS_CMD(0x3B, 0x1D), + _INIT_DCS_CMD(0x3C, 0x0A), + _INIT_DCS_CMD(0x3D, 0x1E), + _INIT_DCS_CMD(0x3E, 0x0A), + _INIT_DCS_CMD(0x3F, 0x1F), + + _INIT_SWITCH_PAGE_CMD(0x04), + _INIT_DCS_CMD(0xBA, 0x01), + + _INIT_SWITCH_PAGE_CMD(0x0E), + _INIT_DCS_CMD(0x02, 0x0C), + _INIT_DCS_CMD(0x20, 0x10), + _INIT_DCS_CMD(0x25, 0x16), + _INIT_DCS_CMD(0x26, 0xE0), + _INIT_DCS_CMD(0x27, 0x00), + _INIT_DCS_CMD(0x29, 0x71), + _INIT_DCS_CMD(0x2A, 0x46), + _INIT_DCS_CMD(0x2B, 0x1F), + _INIT_DCS_CMD(0x2D, 0xC7), + _INIT_DCS_CMD(0x31, 0x02), + _INIT_DCS_CMD(0x32, 0xDF), + _INIT_DCS_CMD(0x33, 0x5A), + _INIT_DCS_CMD(0x34, 0xC0), + _INIT_DCS_CMD(0x35, 0x5A), + _INIT_DCS_CMD(0x36, 0xC0), + _INIT_DCS_CMD(0x38, 0x65), + _INIT_DCS_CMD(0x80, 0x3E), + _INIT_DCS_CMD(0x81, 0xA0), + _INIT_DCS_CMD(0xB0, 0x01), + _INIT_DCS_CMD(0xB1, 0xCC), + _INIT_DCS_CMD(0xC0, 0x12), + _INIT_DCS_CMD(0xC2, 0xCC), + _INIT_DCS_CMD(0xC3, 0xCC), + _INIT_DCS_CMD(0xC4, 0xCC), + _INIT_DCS_CMD(0xC5, 0xCC), + _INIT_DCS_CMD(0xC6, 0xCC), + _INIT_DCS_CMD(0xC7, 0xCC), + _INIT_DCS_CMD(0xC8, 0xCC), + _INIT_DCS_CMD(0xC9, 0xCC), + _INIT_DCS_CMD(0x30, 0x00), + _INIT_DCS_CMD(0x00, 0x81), + _INIT_DCS_CMD(0x08, 0x02), + _INIT_DCS_CMD(0x09, 0x00), + _INIT_DCS_CMD(0x07, 0x21), + _INIT_DCS_CMD(0x04, 0x10), + + _INIT_SWITCH_PAGE_CMD(0x1E), + _INIT_DCS_CMD(0x60, 0x00), + _INIT_DCS_CMD(0x64, 0x00), + _INIT_DCS_CMD(0x6D, 0x00), + + _INIT_SWITCH_PAGE_CMD(0x0B), + _INIT_DCS_CMD(0xA6, 0x44), + _INIT_DCS_CMD(0xA7, 0xB6), + _INIT_DCS_CMD(0xA8, 0x03), + _INIT_DCS_CMD(0xA9, 0x03), + _INIT_DCS_CMD(0xAA, 0x51), + _INIT_DCS_CMD(0xAB, 0x51), + _INIT_DCS_CMD(0xAC, 0x04), + _INIT_DCS_CMD(0xBD, 0x92), + _INIT_DCS_CMD(0xBE, 0xA1), + + _INIT_SWITCH_PAGE_CMD(0x05), + _INIT_DCS_CMD(0x86, 0x87), + + _INIT_SWITCH_PAGE_CMD(0x06), + _INIT_DCS_CMD(0x92, 0x22), + + _INIT_SWITCH_PAGE_CMD(0x00), + _INIT_DCS_CMD(MIPI_DCS_EXIT_SLEEP_MODE), + _INIT_DELAY_CMD(120), + _INIT_DCS_CMD(MIPI_DCS_SET_DISPLAY_ON), + _INIT_DELAY_CMD(20), + {}, +}; + +static inline struct ili9882t *to_ili9882t(struct drm_panel *panel) +{ + return container_of(panel, struct ili9882t, base); +} + +static int ili9882t_init_dcs_cmd(struct ili9882t *ili) +{ + struct mipi_dsi_device *dsi = ili->dsi; + struct drm_panel *panel = &ili->base; + int i, err = 0; + + if (ili->desc->init_cmds) { + const struct panel_init_cmd *init_cmds = ili->desc->init_cmds; + + for (i = 0; init_cmds[i].len != 0; i++) { + const struct panel_init_cmd *cmd = &init_cmds[i]; + + switch (cmd->type) { + case DELAY_CMD: + msleep(cmd->data[0]); + err = 0; + break; + + case INIT_DCS_CMD: + err = mipi_dsi_dcs_write(dsi, cmd->data[0], + cmd->len <= 1 ? NULL : + &cmd->data[1], + cmd->len - 1); + break; + + default: + err = -EINVAL; + } + + if (err < 0) { + dev_err(panel->dev, + "failed to write command %u\n", i); + return err; + } + } + } + return 0; +} + +static int ili9882t_switch_page(struct mipi_dsi_device *dsi, u8 page) +{ + int ret; + const struct panel_init_cmd cmd = _INIT_SWITCH_PAGE_CMD(page); + + ret = mipi_dsi_dcs_write(dsi, cmd.data[0], + cmd.len <= 1 ? NULL : + &cmd.data[1], + cmd.len - 1); + if (ret) { + dev_err(&dsi->dev, + "error switching panel controller page (%d)\n", ret); + return ret; + } + + return 0; +} + +static int ili9882t_enter_sleep_mode(struct ili9882t *ili) +{ + struct mipi_dsi_device *dsi = ili->dsi; + int ret; + + dsi->mode_flags &= ~MIPI_DSI_MODE_LPM; + + ret = mipi_dsi_dcs_set_display_off(dsi); + if (ret < 0) + return ret; + + ret = mipi_dsi_dcs_enter_sleep_mode(dsi); + if (ret < 0) + return ret; + + return 0; +} + +static int ili9882t_disable(struct drm_panel *panel) +{ + struct ili9882t *ili = to_ili9882t(panel); + struct mipi_dsi_device *dsi = ili->dsi; + int ret; + + ili9882t_switch_page(dsi, 0x00); + ret = ili9882t_enter_sleep_mode(ili); + if (ret < 0) { + dev_err(panel->dev, "failed to set panel off: %d\n", ret); + return ret; + } + + msleep(150); + + return 0; +} + +static int ili9882t_unprepare(struct drm_panel *panel) +{ + struct ili9882t *ili = to_ili9882t(panel); + + gpiod_set_value(ili->enable_gpio, 0); + usleep_range(1000, 2000); + regulator_disable(ili->avee); + regulator_disable(ili->avdd); + usleep_range(5000, 7000); + regulator_disable(ili->pp1800); + regulator_disable(ili->pp3300); + + return 0; +} + +static int ili9882t_prepare(struct drm_panel *panel) +{ + struct ili9882t *ili = to_ili9882t(panel); + int ret; + + gpiod_set_value(ili->enable_gpio, 0); + usleep_range(1000, 1500); + + ret = regulator_enable(ili->pp3300); + if (ret < 0) + return ret; + + ret = regulator_enable(ili->pp1800); + if (ret < 0) + return ret; + + usleep_range(3000, 5000); + + ret = regulator_enable(ili->avdd); + if (ret < 0) + goto poweroff1v8; + ret = regulator_enable(ili->avee); + if (ret < 0) + goto poweroffavdd; + + usleep_range(10000, 11000); + + // MIPI needs to keep the LP11 state before the lcm_reset pin is pulled high + mipi_dsi_dcs_nop(ili->dsi); + usleep_range(1000, 2000); + + gpiod_set_value(ili->enable_gpio, 1); + usleep_range(1000, 2000); + gpiod_set_value(ili->enable_gpio, 0); + msleep(50); + gpiod_set_value(ili->enable_gpio, 1); + usleep_range(6000, 10000); + + ret = ili9882t_init_dcs_cmd(ili); + if (ret < 0) { + dev_err(panel->dev, "failed to init panel: %d\n", ret); + goto poweroff; + } + + return 0; + +poweroff: + regulator_disable(ili->avee); +poweroffavdd: + regulator_disable(ili->avdd); +poweroff1v8: + usleep_range(5000, 7000); + regulator_disable(ili->pp1800); + gpiod_set_value(ili->enable_gpio, 0); + + return ret; +} + +static int ili9882t_enable(struct drm_panel *panel) +{ + msleep(130); + return 0; +} + +static const struct drm_display_mode starry_ili9882t_default_mode = { + .clock = 165280, + .hdisplay = 1200, + .hsync_start = 1200 + 72, + .hsync_end = 1200 + 72 + 30, + .htotal = 1200 + 72 + 30 + 72, + .vdisplay = 1920, + .vsync_start = 1920 + 68, + .vsync_end = 1920 + 68 + 2, + .vtotal = 1920 + 68 + 2 + 10, + .type = DRM_MODE_TYPE_DRIVER | DRM_MODE_TYPE_PREFERRED, +}; + +static const struct panel_desc starry_ili9882t_desc = { + .modes = &starry_ili9882t_default_mode, + .bpc = 8, + .size = { + .width_mm = 141, + .height_mm = 226, + }, + .lanes = 4, + .format = MIPI_DSI_FMT_RGB888, + .mode_flags = MIPI_DSI_MODE_VIDEO | MIPI_DSI_MODE_VIDEO_SYNC_PULSE | + MIPI_DSI_MODE_LPM, + .init_cmds = starry_ili9882t_init_cmd, +}; + +static int ili9882t_get_modes(struct drm_panel *panel, + struct drm_connector *connector) +{ + struct ili9882t *ili = to_ili9882t(panel); + const struct drm_display_mode *m = ili->desc->modes; + 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; + } + + mode->type = DRM_MODE_TYPE_DRIVER | DRM_MODE_TYPE_PREFERRED; + drm_mode_set_name(mode); + drm_mode_probed_add(connector, mode); + + connector->display_info.width_mm = ili->desc->size.width_mm; + connector->display_info.height_mm = ili->desc->size.height_mm; + connector->display_info.bpc = ili->desc->bpc; + + return 1; +} + +static enum drm_panel_orientation ili9882t_get_orientation(struct drm_panel *panel) +{ + struct ili9882t *ili = to_ili9882t(panel); + + return ili->orientation; +} + +static const struct drm_panel_funcs ili9882t_funcs = { + .disable = ili9882t_disable, + .unprepare = ili9882t_unprepare, + .prepare = ili9882t_prepare, + .enable = ili9882t_enable, + .get_modes = ili9882t_get_modes, + .get_orientation = ili9882t_get_orientation, +}; + +static int ili9882t_add(struct ili9882t *ili) +{ + struct device *dev = &ili->dsi->dev; + int err; + + ili->avdd = devm_regulator_get(dev, "avdd"); + if (IS_ERR(ili->avdd)) + return PTR_ERR(ili->avdd); + + ili->avee = devm_regulator_get(dev, "avee"); + if (IS_ERR(ili->avee)) + return PTR_ERR(ili->avee); + + ili->pp3300 = devm_regulator_get(dev, "pp3300"); + if (IS_ERR(ili->pp3300)) + return PTR_ERR(ili->pp3300); + + ili->pp1800 = devm_regulator_get(dev, "pp1800"); + if (IS_ERR(ili->pp1800)) + return PTR_ERR(ili->pp1800); + + ili->enable_gpio = devm_gpiod_get(dev, "enable", GPIOD_OUT_LOW); + if (IS_ERR(ili->enable_gpio)) { + dev_err(dev, "cannot get reset-gpios %ld\n", + PTR_ERR(ili->enable_gpio)); + return PTR_ERR(ili->enable_gpio); + } + + gpiod_set_value(ili->enable_gpio, 0); + + drm_panel_init(&ili->base, dev, &ili9882t_funcs, + DRM_MODE_CONNECTOR_DSI); + err = of_drm_get_panel_orientation(dev->of_node, &ili->orientation); + if (err < 0) { + dev_err(dev, "%pOF: failed to get orientation %d\n", dev->of_node, err); + return err; + } + + err = drm_panel_of_backlight(&ili->base); + if (err) + return err; + + ili->base.funcs = &ili9882t_funcs; + ili->base.dev = &ili->dsi->dev; + + drm_panel_add(&ili->base); + + return 0; +} + +static int ili9882t_probe(struct mipi_dsi_device *dsi) +{ + struct ili9882t *ili; + int ret; + const struct panel_desc *desc; + + ili = devm_kzalloc(&dsi->dev, sizeof(*ili), GFP_KERNEL); + if (!ili) + return -ENOMEM; + + desc = of_device_get_match_data(&dsi->dev); + dsi->lanes = desc->lanes; + dsi->format = desc->format; + dsi->mode_flags = desc->mode_flags; + ili->desc = desc; + ili->dsi = dsi; + ret = ili9882t_add(ili); + if (ret < 0) + return ret; + + mipi_dsi_set_drvdata(dsi, ili); + + ret = mipi_dsi_attach(dsi); + if (ret) + drm_panel_remove(&ili->base); + + return ret; +} + +static void ili9882t_remove(struct mipi_dsi_device *dsi) +{ + struct ili9882t *ili = mipi_dsi_get_drvdata(dsi); + int ret; + + ret = mipi_dsi_detach(dsi); + if (ret < 0) + dev_err(&dsi->dev, "failed to detach from DSI host: %d\n", ret); + + if (ili->base.dev) + drm_panel_remove(&ili->base); +} + +static const struct of_device_id ili9882t_of_match[] = { + { .compatible = "starry,ili9882t", + .data = &starry_ili9882t_desc + }, + { /* sentinel */ } +}; +MODULE_DEVICE_TABLE(of, ili9882t_of_match); + +static struct mipi_dsi_driver ili9882t_driver = { + .driver = { + .name = "panel-ili9882t", + .of_match_table = ili9882t_of_match, + }, + .probe = ili9882t_probe, + .remove = ili9882t_remove, +}; +module_mipi_dsi_driver(ili9882t_driver); + +MODULE_AUTHOR("Linus Walleij <linus.walleij@linaro.org>"); +MODULE_DESCRIPTION("Ilitek ILI9882T-based panels driver"); +MODULE_LICENSE("GPL"); |