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32a267e9c0
If we fail to attach (e.g., because 1 of 2 dual-DSI controllers aren't ready), we leave a dangling drm_panel reference to freed memory. Clean that up on failure. This problem exists since the driver's introduction, but is especially relevant after refactored for dual-DSI variants. Fixes:14c8f2e9f8
("drm/panel: add Innolux P079ZCA panel driver") Fixes:7ad4e4636c
("drm/panel: p079zca: Refactor panel driver to support multiple panels") Signed-off-by: Brian Norris <briannorris@chromium.org> Signed-off-by: Sam Ravnborg <sam@ravnborg.org> Link: https://patchwork.freedesktop.org/patch/msgid/20210923173336.2.I9023cf8811a3abf4964ed84eb681721d8bb489d6@changeid
554 lines
14 KiB
C
554 lines
14 KiB
C
// SPDX-License-Identifier: GPL-2.0-or-later
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/*
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* Copyright (c) 2017, Fuzhou Rockchip Electronics Co., Ltd
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*/
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#include <linux/delay.h>
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#include <linux/gpio/consumer.h>
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#include <linux/module.h>
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#include <linux/of.h>
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#include <linux/of_device.h>
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#include <linux/regulator/consumer.h>
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#include <video/mipi_display.h>
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#include <drm/drm_crtc.h>
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#include <drm/drm_device.h>
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#include <drm/drm_mipi_dsi.h>
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#include <drm/drm_modes.h>
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#include <drm/drm_panel.h>
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struct panel_init_cmd {
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size_t len;
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const char *data;
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};
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#define _INIT_CMD(...) { \
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.len = sizeof((char[]){__VA_ARGS__}), \
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.data = (char[]){__VA_ARGS__} }
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struct panel_desc {
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const struct drm_display_mode *mode;
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unsigned int bpc;
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struct {
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unsigned int width;
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unsigned int height;
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} size;
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unsigned long flags;
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enum mipi_dsi_pixel_format format;
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const struct panel_init_cmd *init_cmds;
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unsigned int lanes;
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const char * const *supply_names;
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unsigned int num_supplies;
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unsigned int sleep_mode_delay;
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unsigned int power_down_delay;
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};
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struct innolux_panel {
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struct drm_panel base;
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struct mipi_dsi_device *link;
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const struct panel_desc *desc;
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struct regulator_bulk_data *supplies;
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struct gpio_desc *enable_gpio;
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bool prepared;
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bool enabled;
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};
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static inline struct innolux_panel *to_innolux_panel(struct drm_panel *panel)
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{
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return container_of(panel, struct innolux_panel, base);
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}
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static int innolux_panel_disable(struct drm_panel *panel)
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{
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struct innolux_panel *innolux = to_innolux_panel(panel);
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if (!innolux->enabled)
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return 0;
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innolux->enabled = false;
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return 0;
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}
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static int innolux_panel_unprepare(struct drm_panel *panel)
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{
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struct innolux_panel *innolux = to_innolux_panel(panel);
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int err;
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if (!innolux->prepared)
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return 0;
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err = mipi_dsi_dcs_set_display_off(innolux->link);
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if (err < 0)
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dev_err(panel->dev, "failed to set display off: %d\n", err);
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err = mipi_dsi_dcs_enter_sleep_mode(innolux->link);
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if (err < 0) {
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dev_err(panel->dev, "failed to enter sleep mode: %d\n", err);
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return err;
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}
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if (innolux->desc->sleep_mode_delay)
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msleep(innolux->desc->sleep_mode_delay);
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gpiod_set_value_cansleep(innolux->enable_gpio, 0);
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if (innolux->desc->power_down_delay)
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msleep(innolux->desc->power_down_delay);
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err = regulator_bulk_disable(innolux->desc->num_supplies,
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innolux->supplies);
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if (err < 0)
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return err;
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innolux->prepared = false;
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return 0;
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}
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static int innolux_panel_prepare(struct drm_panel *panel)
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{
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struct innolux_panel *innolux = to_innolux_panel(panel);
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int err;
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if (innolux->prepared)
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return 0;
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gpiod_set_value_cansleep(innolux->enable_gpio, 0);
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err = regulator_bulk_enable(innolux->desc->num_supplies,
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innolux->supplies);
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if (err < 0)
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return err;
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/* p079zca: t2 (20ms), p097pfg: t4 (15ms) */
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usleep_range(20000, 21000);
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gpiod_set_value_cansleep(innolux->enable_gpio, 1);
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/* p079zca: t4, p097pfg: t5 */
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usleep_range(20000, 21000);
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if (innolux->desc->init_cmds) {
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const struct panel_init_cmd *cmds =
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innolux->desc->init_cmds;
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unsigned int i;
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for (i = 0; cmds[i].len != 0; i++) {
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const struct panel_init_cmd *cmd = &cmds[i];
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err = mipi_dsi_generic_write(innolux->link, cmd->data,
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cmd->len);
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if (err < 0) {
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dev_err(panel->dev, "failed to write command %u\n", i);
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goto poweroff;
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}
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/*
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* Included by random guessing, because without this
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* (or at least, some delay), the panel sometimes
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* didn't appear to pick up the command sequence.
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*/
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err = mipi_dsi_dcs_nop(innolux->link);
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if (err < 0) {
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dev_err(panel->dev, "failed to send DCS nop: %d\n", err);
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goto poweroff;
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}
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}
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}
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err = mipi_dsi_dcs_exit_sleep_mode(innolux->link);
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if (err < 0) {
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dev_err(panel->dev, "failed to exit sleep mode: %d\n", err);
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goto poweroff;
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}
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/* T6: 120ms - 1000ms*/
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msleep(120);
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err = mipi_dsi_dcs_set_display_on(innolux->link);
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if (err < 0) {
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dev_err(panel->dev, "failed to set display on: %d\n", err);
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goto poweroff;
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}
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/* T7: 5ms */
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usleep_range(5000, 6000);
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innolux->prepared = true;
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return 0;
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poweroff:
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gpiod_set_value_cansleep(innolux->enable_gpio, 0);
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regulator_bulk_disable(innolux->desc->num_supplies, innolux->supplies);
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return err;
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}
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static int innolux_panel_enable(struct drm_panel *panel)
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{
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struct innolux_panel *innolux = to_innolux_panel(panel);
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if (innolux->enabled)
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return 0;
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innolux->enabled = true;
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return 0;
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}
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static const char * const innolux_p079zca_supply_names[] = {
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"power",
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};
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static const struct drm_display_mode innolux_p079zca_mode = {
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.clock = 56900,
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.hdisplay = 768,
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.hsync_start = 768 + 40,
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.hsync_end = 768 + 40 + 40,
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.htotal = 768 + 40 + 40 + 40,
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.vdisplay = 1024,
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.vsync_start = 1024 + 20,
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.vsync_end = 1024 + 20 + 4,
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.vtotal = 1024 + 20 + 4 + 20,
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};
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static const struct panel_desc innolux_p079zca_panel_desc = {
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.mode = &innolux_p079zca_mode,
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.bpc = 8,
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.size = {
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.width = 120,
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.height = 160,
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},
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.flags = MIPI_DSI_MODE_VIDEO | MIPI_DSI_MODE_VIDEO_SYNC_PULSE |
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MIPI_DSI_MODE_LPM,
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.format = MIPI_DSI_FMT_RGB888,
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.lanes = 4,
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.supply_names = innolux_p079zca_supply_names,
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.num_supplies = ARRAY_SIZE(innolux_p079zca_supply_names),
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.power_down_delay = 80, /* T8: 80ms - 1000ms */
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};
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static const char * const innolux_p097pfg_supply_names[] = {
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"avdd",
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"avee",
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};
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static const struct drm_display_mode innolux_p097pfg_mode = {
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.clock = 229000,
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.hdisplay = 1536,
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.hsync_start = 1536 + 100,
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.hsync_end = 1536 + 100 + 24,
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.htotal = 1536 + 100 + 24 + 100,
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.vdisplay = 2048,
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.vsync_start = 2048 + 100,
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.vsync_end = 2048 + 100 + 2,
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.vtotal = 2048 + 100 + 2 + 18,
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};
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/*
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* Display manufacturer failed to provide init sequencing according to
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* https://chromium-review.googlesource.com/c/chromiumos/third_party/coreboot/+/892065/
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* so the init sequence stems from a register dump of a working panel.
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*/
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static const struct panel_init_cmd innolux_p097pfg_init_cmds[] = {
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/* page 0 */
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_INIT_CMD(0xF0, 0x55, 0xAA, 0x52, 0x08, 0x00),
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_INIT_CMD(0xB1, 0xE8, 0x11),
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_INIT_CMD(0xB2, 0x25, 0x02),
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_INIT_CMD(0xB5, 0x08, 0x00),
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_INIT_CMD(0xBC, 0x0F, 0x00),
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_INIT_CMD(0xB8, 0x03, 0x06, 0x00, 0x00),
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_INIT_CMD(0xBD, 0x01, 0x90, 0x14, 0x14),
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_INIT_CMD(0x6F, 0x01),
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_INIT_CMD(0xC0, 0x03),
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_INIT_CMD(0x6F, 0x02),
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_INIT_CMD(0xC1, 0x0D),
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_INIT_CMD(0xD9, 0x01, 0x09, 0x70),
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_INIT_CMD(0xC5, 0x12, 0x21, 0x00),
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_INIT_CMD(0xBB, 0x93, 0x93),
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/* page 1 */
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_INIT_CMD(0xF0, 0x55, 0xAA, 0x52, 0x08, 0x01),
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_INIT_CMD(0xB3, 0x3C, 0x3C),
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_INIT_CMD(0xB4, 0x0F, 0x0F),
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_INIT_CMD(0xB9, 0x45, 0x45),
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_INIT_CMD(0xBA, 0x14, 0x14),
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_INIT_CMD(0xCA, 0x02),
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_INIT_CMD(0xCE, 0x04),
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_INIT_CMD(0xC3, 0x9B, 0x9B),
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_INIT_CMD(0xD8, 0xC0, 0x03),
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_INIT_CMD(0xBC, 0x82, 0x01),
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_INIT_CMD(0xBD, 0x9E, 0x01),
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/* page 2 */
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_INIT_CMD(0xF0, 0x55, 0xAA, 0x52, 0x08, 0x02),
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_INIT_CMD(0xB0, 0x82),
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_INIT_CMD(0xD1, 0x00, 0x00, 0x00, 0x3E, 0x00, 0x82, 0x00, 0xA5,
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0x00, 0xC1, 0x00, 0xEA, 0x01, 0x0D, 0x01, 0x40),
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_INIT_CMD(0xD2, 0x01, 0x6A, 0x01, 0xA8, 0x01, 0xDC, 0x02, 0x29,
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0x02, 0x67, 0x02, 0x68, 0x02, 0xA8, 0x02, 0xF0),
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_INIT_CMD(0xD3, 0x03, 0x19, 0x03, 0x49, 0x03, 0x67, 0x03, 0x8C,
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0x03, 0xA6, 0x03, 0xC7, 0x03, 0xDE, 0x03, 0xEC),
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_INIT_CMD(0xD4, 0x03, 0xFF, 0x03, 0xFF),
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_INIT_CMD(0xE0, 0x00, 0x00, 0x00, 0x86, 0x00, 0xC5, 0x00, 0xE5,
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0x00, 0xFF, 0x01, 0x26, 0x01, 0x45, 0x01, 0x75),
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_INIT_CMD(0xE1, 0x01, 0x9C, 0x01, 0xD5, 0x02, 0x05, 0x02, 0x4D,
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0x02, 0x86, 0x02, 0x87, 0x02, 0xC3, 0x03, 0x03),
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_INIT_CMD(0xE2, 0x03, 0x2A, 0x03, 0x56, 0x03, 0x72, 0x03, 0x94,
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0x03, 0xAC, 0x03, 0xCB, 0x03, 0xE0, 0x03, 0xED),
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_INIT_CMD(0xE3, 0x03, 0xFF, 0x03, 0xFF),
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/* page 3 */
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_INIT_CMD(0xF0, 0x55, 0xAA, 0x52, 0x08, 0x03),
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_INIT_CMD(0xB0, 0x00, 0x00, 0x00, 0x00),
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_INIT_CMD(0xB1, 0x00, 0x00, 0x00, 0x00),
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_INIT_CMD(0xB2, 0x00, 0x00, 0x06, 0x04, 0x01, 0x40, 0x85),
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_INIT_CMD(0xB3, 0x10, 0x07, 0xFC, 0x04, 0x01, 0x40, 0x80),
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_INIT_CMD(0xB6, 0xF0, 0x08, 0x00, 0x04, 0x00, 0x00, 0x00, 0x01,
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0x40, 0x80),
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_INIT_CMD(0xBA, 0xC5, 0x07, 0x00, 0x04, 0x11, 0x25, 0x8C),
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_INIT_CMD(0xBB, 0xC5, 0x07, 0x00, 0x03, 0x11, 0x25, 0x8C),
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_INIT_CMD(0xC0, 0x00, 0x3C, 0x00, 0x00, 0x00, 0x80, 0x80),
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_INIT_CMD(0xC1, 0x00, 0x3C, 0x00, 0x00, 0x00, 0x80, 0x80),
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_INIT_CMD(0xC4, 0x00, 0x00),
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_INIT_CMD(0xEF, 0x41),
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/* page 4 */
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_INIT_CMD(0xF0, 0x55, 0xAA, 0x52, 0x08, 0x04),
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_INIT_CMD(0xEC, 0x4C),
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/* page 5 */
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_INIT_CMD(0xF0, 0x55, 0xAA, 0x52, 0x08, 0x05),
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_INIT_CMD(0xB0, 0x13, 0x03, 0x03, 0x01),
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_INIT_CMD(0xB1, 0x30, 0x00),
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_INIT_CMD(0xB2, 0x02, 0x02, 0x00),
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_INIT_CMD(0xB3, 0x82, 0x23, 0x82, 0x9D),
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_INIT_CMD(0xB4, 0xC5, 0x75, 0x24, 0x57),
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_INIT_CMD(0xB5, 0x00, 0xD4, 0x72, 0x11, 0x11, 0xAB, 0x0A),
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_INIT_CMD(0xB6, 0x00, 0x00, 0xD5, 0x72, 0x24, 0x56),
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_INIT_CMD(0xB7, 0x5C, 0xDC, 0x5C, 0x5C),
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_INIT_CMD(0xB9, 0x0C, 0x00, 0x00, 0x01, 0x00),
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_INIT_CMD(0xC0, 0x75, 0x11, 0x11, 0x54, 0x05),
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_INIT_CMD(0xC6, 0x00, 0x00, 0x00, 0x00),
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_INIT_CMD(0xD0, 0x00, 0x48, 0x08, 0x00, 0x00),
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_INIT_CMD(0xD1, 0x00, 0x48, 0x09, 0x00, 0x00),
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/* page 6 */
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_INIT_CMD(0xF0, 0x55, 0xAA, 0x52, 0x08, 0x06),
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_INIT_CMD(0xB0, 0x02, 0x32, 0x32, 0x08, 0x2F),
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_INIT_CMD(0xB1, 0x2E, 0x15, 0x14, 0x13, 0x12),
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_INIT_CMD(0xB2, 0x11, 0x10, 0x00, 0x3D, 0x3D),
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_INIT_CMD(0xB3, 0x3D, 0x3D, 0x3D, 0x3D, 0x3D),
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_INIT_CMD(0xB4, 0x3D, 0x32),
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_INIT_CMD(0xB5, 0x03, 0x32, 0x32, 0x09, 0x2F),
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_INIT_CMD(0xB6, 0x2E, 0x1B, 0x1A, 0x19, 0x18),
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_INIT_CMD(0xB7, 0x17, 0x16, 0x01, 0x3D, 0x3D),
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_INIT_CMD(0xB8, 0x3D, 0x3D, 0x3D, 0x3D, 0x3D),
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_INIT_CMD(0xB9, 0x3D, 0x32),
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_INIT_CMD(0xC0, 0x01, 0x32, 0x32, 0x09, 0x2F),
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_INIT_CMD(0xC1, 0x2E, 0x1A, 0x1B, 0x16, 0x17),
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_INIT_CMD(0xC2, 0x18, 0x19, 0x03, 0x3D, 0x3D),
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_INIT_CMD(0xC3, 0x3D, 0x3D, 0x3D, 0x3D, 0x3D),
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_INIT_CMD(0xC4, 0x3D, 0x32),
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_INIT_CMD(0xC5, 0x00, 0x32, 0x32, 0x08, 0x2F),
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_INIT_CMD(0xC6, 0x2E, 0x14, 0x15, 0x10, 0x11),
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_INIT_CMD(0xC7, 0x12, 0x13, 0x02, 0x3D, 0x3D),
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_INIT_CMD(0xC8, 0x3D, 0x3D, 0x3D, 0x3D, 0x3D),
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_INIT_CMD(0xC9, 0x3D, 0x32),
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{},
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};
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static const struct panel_desc innolux_p097pfg_panel_desc = {
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.mode = &innolux_p097pfg_mode,
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.bpc = 8,
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.size = {
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.width = 147,
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.height = 196,
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},
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.flags = MIPI_DSI_MODE_VIDEO | MIPI_DSI_MODE_VIDEO_SYNC_PULSE |
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MIPI_DSI_MODE_LPM,
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.format = MIPI_DSI_FMT_RGB888,
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.init_cmds = innolux_p097pfg_init_cmds,
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.lanes = 4,
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.supply_names = innolux_p097pfg_supply_names,
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.num_supplies = ARRAY_SIZE(innolux_p097pfg_supply_names),
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.sleep_mode_delay = 100, /* T15 */
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};
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static int innolux_panel_get_modes(struct drm_panel *panel,
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struct drm_connector *connector)
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{
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struct innolux_panel *innolux = to_innolux_panel(panel);
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const struct drm_display_mode *m = innolux->desc->mode;
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struct drm_display_mode *mode;
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mode = drm_mode_duplicate(connector->dev, m);
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if (!mode) {
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dev_err(panel->dev, "failed to add mode %ux%u@%u\n",
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m->hdisplay, m->vdisplay, drm_mode_vrefresh(m));
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return -ENOMEM;
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}
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drm_mode_set_name(mode);
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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 int 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);
|
|
|
|
return 0;
|
|
}
|
|
|
|
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");
|