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path: root/drivers/gpu/drm/panel/panel-sony-acx424akp.c
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Diffstat (limited to 'drivers/gpu/drm/panel/panel-sony-acx424akp.c')
-rw-r--r--drivers/gpu/drm/panel/panel-sony-acx424akp.c490
1 files changed, 0 insertions, 490 deletions
diff --git a/drivers/gpu/drm/panel/panel-sony-acx424akp.c b/drivers/gpu/drm/panel/panel-sony-acx424akp.c
deleted file mode 100644
index 9536d56a94a5..000000000000
--- a/drivers/gpu/drm/panel/panel-sony-acx424akp.c
+++ /dev/null
@@ -1,490 +0,0 @@
-// SPDX-License-Identifier: GPL-2.0+
-/*
- * MIPI-DSI Sony ACX424AKP panel driver. This is a 480x864
- * AMOLED panel with a command-only DSI interface.
- *
- * Copyright (C) Linaro Ltd. 2019
- * Author: Linus Walleij
- * Based on code and know-how from Marcus Lorentzon
- * Copyright (C) ST-Ericsson SA 2010
- */
-#include <linux/backlight.h>
-#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_mipi_dsi.h>
-#include <drm/drm_modes.h>
-#include <drm/drm_panel.h>
-
-#define ACX424_DCS_READ_ID1 0xDA
-#define ACX424_DCS_READ_ID2 0xDB
-#define ACX424_DCS_READ_ID3 0xDC
-#define ACX424_DCS_SET_MDDI 0xAE
-
-/*
- * Sony seems to use vendor ID 0x81
- */
-#define DISPLAY_SONY_ACX424AKP_ID1 0x811b
-#define DISPLAY_SONY_ACX424AKP_ID2 0x811a
-/*
- * The third ID looks like a bug, vendor IDs begin at 0x80
- * and panel 00 ... seems like default values.
- */
-#define DISPLAY_SONY_ACX424AKP_ID3 0x8000
-
-struct acx424akp {
- struct drm_panel panel;
- struct device *dev;
- struct regulator *supply;
- struct gpio_desc *reset_gpio;
- bool video_mode;
-};
-
-static const struct drm_display_mode sony_acx424akp_vid_mode = {
- .clock = 27234,
- .hdisplay = 480,
- .hsync_start = 480 + 15,
- .hsync_end = 480 + 15 + 0,
- .htotal = 480 + 15 + 0 + 15,
- .vdisplay = 864,
- .vsync_start = 864 + 14,
- .vsync_end = 864 + 14 + 1,
- .vtotal = 864 + 14 + 1 + 11,
- .width_mm = 48,
- .height_mm = 84,
- .flags = DRM_MODE_FLAG_PVSYNC,
-};
-
-/*
- * The timings are not very helpful as the display is used in
- * command mode using the maximum HS frequency.
- */
-static const struct drm_display_mode sony_acx424akp_cmd_mode = {
- .clock = 35478,
- .hdisplay = 480,
- .hsync_start = 480 + 154,
- .hsync_end = 480 + 154 + 16,
- .htotal = 480 + 154 + 16 + 32,
- .vdisplay = 864,
- .vsync_start = 864 + 1,
- .vsync_end = 864 + 1 + 1,
- .vtotal = 864 + 1 + 1 + 1,
- /*
- * Some desired refresh rate, experiments at the maximum "pixel"
- * clock speed (HS clock 420 MHz) yields around 117Hz.
- */
- .width_mm = 48,
- .height_mm = 84,
-};
-
-static inline struct acx424akp *panel_to_acx424akp(struct drm_panel *panel)
-{
- return container_of(panel, struct acx424akp, panel);
-}
-
-#define FOSC 20 /* 20Mhz */
-#define SCALE_FACTOR_NS_DIV_MHZ 1000
-
-static int acx424akp_set_brightness(struct backlight_device *bl)
-{
- struct acx424akp *acx = bl_get_data(bl);
- struct mipi_dsi_device *dsi = to_mipi_dsi_device(acx->dev);
- int period_ns = 1023;
- int duty_ns = bl->props.brightness;
- u8 pwm_ratio;
- u8 pwm_div;
- u8 par;
- int ret;
-
- if (backlight_is_blank(bl)) {
- /* Disable backlight */
- par = 0x00;
- ret = mipi_dsi_dcs_write(dsi, MIPI_DCS_WRITE_CONTROL_DISPLAY,
- &par, 1);
- if (ret) {
- dev_err(acx->dev, "failed to disable display backlight (%d)\n", ret);
- return ret;
- }
- return 0;
- }
-
- /* Calculate the PWM duty cycle in n/256's */
- pwm_ratio = max(((duty_ns * 256) / period_ns) - 1, 1);
- pwm_div = max(1,
- ((FOSC * period_ns) / 256) /
- SCALE_FACTOR_NS_DIV_MHZ);
-
- /* Set up PWM dutycycle ONE byte (differs from the standard) */
- dev_dbg(acx->dev, "calculated duty cycle %02x\n", pwm_ratio);
- ret = mipi_dsi_dcs_write(dsi, MIPI_DCS_SET_DISPLAY_BRIGHTNESS,
- &pwm_ratio, 1);
- if (ret < 0) {
- dev_err(acx->dev, "failed to set display PWM ratio (%d)\n", ret);
- return ret;
- }
-
- /*
- * Sequence to write PWMDIV:
- * address data
- * 0xF3 0xAA CMD2 Unlock
- * 0x00 0x01 Enter CMD2 page 0
- * 0X7D 0x01 No reload MTP of CMD2 P1
- * 0x22 PWMDIV
- * 0x7F 0xAA CMD2 page 1 lock
- */
- par = 0xaa;
- ret = mipi_dsi_dcs_write(dsi, 0xf3, &par, 1);
- if (ret < 0) {
- dev_err(acx->dev, "failed to unlock CMD 2 (%d)\n", ret);
- return ret;
- }
- par = 0x01;
- ret = mipi_dsi_dcs_write(dsi, 0x00, &par, 1);
- if (ret < 0) {
- dev_err(acx->dev, "failed to enter page 1 (%d)\n", ret);
- return ret;
- }
- par = 0x01;
- ret = mipi_dsi_dcs_write(dsi, 0x7d, &par, 1);
- if (ret < 0) {
- dev_err(acx->dev, "failed to disable MTP reload (%d)\n", ret);
- return ret;
- }
- ret = mipi_dsi_dcs_write(dsi, 0x22, &pwm_div, 1);
- if (ret < 0) {
- dev_err(acx->dev, "failed to set PWM divisor (%d)\n", ret);
- return ret;
- }
- par = 0xaa;
- ret = mipi_dsi_dcs_write(dsi, 0x7f, &par, 1);
- if (ret < 0) {
- dev_err(acx->dev, "failed to lock CMD 2 (%d)\n", ret);
- return ret;
- }
-
- /* Enable backlight */
- par = 0x24;
- ret = mipi_dsi_dcs_write(dsi, MIPI_DCS_WRITE_CONTROL_DISPLAY,
- &par, 1);
- if (ret < 0) {
- dev_err(acx->dev, "failed to enable display backlight (%d)\n", ret);
- return ret;
- }
-
- return 0;
-}
-
-static const struct backlight_ops acx424akp_bl_ops = {
- .update_status = acx424akp_set_brightness,
-};
-
-static const struct backlight_properties acx424akp_bl_props = {
- .type = BACKLIGHT_RAW,
- .brightness = 512,
- .max_brightness = 1023,
-};
-
-static int acx424akp_read_id(struct acx424akp *acx)
-{
- struct mipi_dsi_device *dsi = to_mipi_dsi_device(acx->dev);
- u8 vendor, version, panel;
- u16 val;
- int ret;
-
- ret = mipi_dsi_dcs_read(dsi, ACX424_DCS_READ_ID1, &vendor, 1);
- if (ret < 0) {
- dev_err(acx->dev, "could not vendor ID byte\n");
- return ret;
- }
- ret = mipi_dsi_dcs_read(dsi, ACX424_DCS_READ_ID2, &version, 1);
- if (ret < 0) {
- dev_err(acx->dev, "could not read device version byte\n");
- return ret;
- }
- ret = mipi_dsi_dcs_read(dsi, ACX424_DCS_READ_ID3, &panel, 1);
- if (ret < 0) {
- dev_err(acx->dev, "could not read panel ID byte\n");
- return ret;
- }
-
- if (vendor == 0x00) {
- dev_err(acx->dev, "device vendor ID is zero\n");
- return -ENODEV;
- }
-
- val = (vendor << 8) | panel;
- switch (val) {
- case DISPLAY_SONY_ACX424AKP_ID1:
- case DISPLAY_SONY_ACX424AKP_ID2:
- case DISPLAY_SONY_ACX424AKP_ID3:
- dev_info(acx->dev, "MTP vendor: %02x, version: %02x, panel: %02x\n",
- vendor, version, panel);
- break;
- default:
- dev_info(acx->dev, "unknown vendor: %02x, version: %02x, panel: %02x\n",
- vendor, version, panel);
- break;
- }
-
- return 0;
-}
-
-static int acx424akp_power_on(struct acx424akp *acx)
-{
- int ret;
-
- ret = regulator_enable(acx->supply);
- if (ret) {
- dev_err(acx->dev, "failed to enable supply (%d)\n", ret);
- return ret;
- }
-
- /* Assert RESET */
- gpiod_set_value_cansleep(acx->reset_gpio, 1);
- udelay(20);
- /* De-assert RESET */
- gpiod_set_value_cansleep(acx->reset_gpio, 0);
- usleep_range(11000, 20000);
-
- return 0;
-}
-
-static void acx424akp_power_off(struct acx424akp *acx)
-{
- /* Assert RESET */
- gpiod_set_value_cansleep(acx->reset_gpio, 1);
- usleep_range(11000, 20000);
-
- regulator_disable(acx->supply);
-}
-
-static int acx424akp_prepare(struct drm_panel *panel)
-{
- struct acx424akp *acx = panel_to_acx424akp(panel);
- struct mipi_dsi_device *dsi = to_mipi_dsi_device(acx->dev);
- const u8 mddi = 3;
- int ret;
-
- ret = acx424akp_power_on(acx);
- if (ret)
- return ret;
-
- ret = acx424akp_read_id(acx);
- if (ret) {
- dev_err(acx->dev, "failed to read panel ID (%d)\n", ret);
- goto err_power_off;
- }
-
- /* Enabe tearing mode: send TE (tearing effect) at VBLANK */
- ret = mipi_dsi_dcs_set_tear_on(dsi,
- MIPI_DSI_DCS_TEAR_MODE_VBLANK);
- if (ret) {
- dev_err(acx->dev, "failed to enable vblank TE (%d)\n", ret);
- goto err_power_off;
- }
-
- /*
- * Set MDDI
- *
- * This presumably deactivates the Qualcomm MDDI interface and
- * selects DSI, similar code is found in other drivers such as the
- * Sharp LS043T1LE01 which makes us suspect that this panel may be
- * using a Novatek NT35565 or similar display driver chip that shares
- * this command. Due to the lack of documentation we cannot know for
- * sure.
- */
- ret = mipi_dsi_dcs_write(dsi, ACX424_DCS_SET_MDDI,
- &mddi, sizeof(mddi));
- if (ret < 0) {
- dev_err(acx->dev, "failed to set MDDI (%d)\n", ret);
- goto err_power_off;
- }
-
- /* Exit sleep mode */
- ret = mipi_dsi_dcs_exit_sleep_mode(dsi);
- if (ret) {
- dev_err(acx->dev, "failed to exit sleep mode (%d)\n", ret);
- goto err_power_off;
- }
- msleep(140);
-
- ret = mipi_dsi_dcs_set_display_on(dsi);
- if (ret) {
- dev_err(acx->dev, "failed to turn display on (%d)\n", ret);
- goto err_power_off;
- }
- if (acx->video_mode) {
- /* In video mode turn peripheral on */
- ret = mipi_dsi_turn_on_peripheral(dsi);
- if (ret) {
- dev_err(acx->dev, "failed to turn on peripheral\n");
- goto err_power_off;
- }
- }
-
- return 0;
-
-err_power_off:
- acx424akp_power_off(acx);
- return ret;
-}
-
-static int acx424akp_unprepare(struct drm_panel *panel)
-{
- struct acx424akp *acx = panel_to_acx424akp(panel);
- struct mipi_dsi_device *dsi = to_mipi_dsi_device(acx->dev);
- int ret;
-
- ret = mipi_dsi_dcs_set_display_off(dsi);
- if (ret) {
- dev_err(acx->dev, "failed to turn display off (%d)\n", ret);
- return ret;
- }
-
- /* Enter sleep mode */
- ret = mipi_dsi_dcs_enter_sleep_mode(dsi);
- if (ret) {
- dev_err(acx->dev, "failed to enter sleep mode (%d)\n", ret);
- return ret;
- }
- msleep(85);
-
- acx424akp_power_off(acx);
-
- return 0;
-}
-
-
-static int acx424akp_get_modes(struct drm_panel *panel,
- struct drm_connector *connector)
-{
- struct acx424akp *acx = panel_to_acx424akp(panel);
- struct drm_display_mode *mode;
-
- if (acx->video_mode)
- mode = drm_mode_duplicate(connector->dev,
- &sony_acx424akp_vid_mode);
- else
- mode = drm_mode_duplicate(connector->dev,
- &sony_acx424akp_cmd_mode);
- if (!mode) {
- dev_err(panel->dev, "bad mode or failed to add mode\n");
- return -EINVAL;
- }
- drm_mode_set_name(mode);
- mode->type = DRM_MODE_TYPE_DRIVER | DRM_MODE_TYPE_PREFERRED;
-
- connector->display_info.width_mm = mode->width_mm;
- connector->display_info.height_mm = mode->height_mm;
-
- drm_mode_probed_add(connector, mode);
-
- return 1; /* Number of modes */
-}
-
-static const struct drm_panel_funcs acx424akp_drm_funcs = {
- .unprepare = acx424akp_unprepare,
- .prepare = acx424akp_prepare,
- .get_modes = acx424akp_get_modes,
-};
-
-static int acx424akp_probe(struct mipi_dsi_device *dsi)
-{
- struct device *dev = &dsi->dev;
- struct acx424akp *acx;
- int ret;
-
- acx = devm_kzalloc(dev, sizeof(struct acx424akp), GFP_KERNEL);
- if (!acx)
- return -ENOMEM;
- acx->video_mode = of_property_read_bool(dev->of_node,
- "enforce-video-mode");
-
- mipi_dsi_set_drvdata(dsi, acx);
- acx->dev = dev;
-
- dsi->lanes = 2;
- dsi->format = MIPI_DSI_FMT_RGB888;
- /*
- * FIXME: these come from the ST-Ericsson vendor driver for the
- * HREF520 and seems to reflect limitations in the PLLs on that
- * platform, if you have the datasheet, please cross-check the
- * actual max rates.
- */
- dsi->lp_rate = 19200000;
- dsi->hs_rate = 420160000;
-
- if (acx->video_mode)
- /* Burst mode using event for sync */
- dsi->mode_flags =
- MIPI_DSI_MODE_VIDEO |
- MIPI_DSI_MODE_VIDEO_BURST;
- else
- dsi->mode_flags =
- MIPI_DSI_CLOCK_NON_CONTINUOUS;
-
- acx->supply = devm_regulator_get(dev, "vddi");
- if (IS_ERR(acx->supply))
- return PTR_ERR(acx->supply);
-
- /* This asserts RESET by default */
- acx->reset_gpio = devm_gpiod_get_optional(dev, "reset",
- GPIOD_OUT_HIGH);
- if (IS_ERR(acx->reset_gpio))
- return dev_err_probe(dev, PTR_ERR(acx->reset_gpio),
- "failed to request GPIO\n");
-
- drm_panel_init(&acx->panel, dev, &acx424akp_drm_funcs,
- DRM_MODE_CONNECTOR_DSI);
-
- acx->panel.backlight = devm_backlight_device_register(dev, "acx424akp", dev, acx,
- &acx424akp_bl_ops, &acx424akp_bl_props);
- if (IS_ERR(acx->panel.backlight))
- return dev_err_probe(dev, PTR_ERR(acx->panel.backlight),
- "failed to register backlight device\n");
-
- drm_panel_add(&acx->panel);
-
- ret = mipi_dsi_attach(dsi);
- if (ret < 0) {
- drm_panel_remove(&acx->panel);
- return ret;
- }
-
- return 0;
-}
-
-static int acx424akp_remove(struct mipi_dsi_device *dsi)
-{
- struct acx424akp *acx = mipi_dsi_get_drvdata(dsi);
-
- mipi_dsi_detach(dsi);
- drm_panel_remove(&acx->panel);
-
- return 0;
-}
-
-static const struct of_device_id acx424akp_of_match[] = {
- { .compatible = "sony,acx424akp" },
- { /* sentinel */ }
-};
-MODULE_DEVICE_TABLE(of, acx424akp_of_match);
-
-static struct mipi_dsi_driver acx424akp_driver = {
- .probe = acx424akp_probe,
- .remove = acx424akp_remove,
- .driver = {
- .name = "panel-sony-acx424akp",
- .of_match_table = acx424akp_of_match,
- },
-};
-module_mipi_dsi_driver(acx424akp_driver);
-
-MODULE_AUTHOR("Linus Wallei <linus.walleij@linaro.org>");
-MODULE_DESCRIPTION("MIPI-DSI Sony acx424akp Panel Driver");
-MODULE_LICENSE("GPL v2");
generated by cgit (git 2.34.1) at 2025-05-18 17:56:55 +0000