702 lines
16 KiB
C
702 lines
16 KiB
C
// SPDX-License-Identifier: GPL-2.0
|
|
/*
|
|
* Sony ACX565AKM LCD Panel driver
|
|
*
|
|
* Copyright (C) 2019 Texas Instruments Incorporated
|
|
*
|
|
* Based on the omapdrm-specific panel-sony-acx565akm driver
|
|
*
|
|
* Copyright (C) 2010 Nokia Corporation
|
|
* Author: Imre Deak <imre.deak@nokia.com>
|
|
*/
|
|
|
|
/*
|
|
* TODO (to be addressed with hardware access to test the changes):
|
|
*
|
|
* - Update backlight support to use backlight_update_status() etc.
|
|
* - Use prepare/unprepare for the basic power on/off of the backligt
|
|
*/
|
|
|
|
#include <linux/backlight.h>
|
|
#include <linux/delay.h>
|
|
#include <linux/gpio/consumer.h>
|
|
#include <linux/jiffies.h>
|
|
#include <linux/module.h>
|
|
#include <linux/mutex.h>
|
|
#include <linux/sched.h>
|
|
#include <linux/spi/spi.h>
|
|
#include <video/mipi_display.h>
|
|
|
|
#include <drm/drm_connector.h>
|
|
#include <drm/drm_modes.h>
|
|
#include <drm/drm_panel.h>
|
|
|
|
#define CTRL_DISP_BRIGHTNESS_CTRL_ON BIT(5)
|
|
#define CTRL_DISP_AMBIENT_LIGHT_CTRL_ON BIT(4)
|
|
#define CTRL_DISP_BACKLIGHT_ON BIT(2)
|
|
#define CTRL_DISP_AUTO_BRIGHTNESS_ON BIT(1)
|
|
|
|
#define MIPID_CMD_WRITE_CABC 0x55
|
|
#define MIPID_CMD_READ_CABC 0x56
|
|
|
|
#define MIPID_VER_LPH8923 3
|
|
#define MIPID_VER_LS041Y3 4
|
|
#define MIPID_VER_L4F00311 8
|
|
#define MIPID_VER_ACX565AKM 9
|
|
|
|
struct acx565akm_panel {
|
|
struct drm_panel panel;
|
|
|
|
struct spi_device *spi;
|
|
struct gpio_desc *reset_gpio;
|
|
struct backlight_device *backlight;
|
|
|
|
struct mutex mutex;
|
|
|
|
const char *name;
|
|
u8 display_id[3];
|
|
int model;
|
|
int revision;
|
|
bool has_bc;
|
|
bool has_cabc;
|
|
|
|
bool enabled;
|
|
unsigned int cabc_mode;
|
|
/*
|
|
* Next value of jiffies when we can issue the next sleep in/out
|
|
* command.
|
|
*/
|
|
unsigned long hw_guard_end;
|
|
unsigned long hw_guard_wait; /* max guard time in jiffies */
|
|
};
|
|
|
|
#define to_acx565akm_device(p) container_of(p, struct acx565akm_panel, panel)
|
|
|
|
static void acx565akm_transfer(struct acx565akm_panel *lcd, int cmd,
|
|
const u8 *wbuf, int wlen, u8 *rbuf, int rlen)
|
|
{
|
|
struct spi_message m;
|
|
struct spi_transfer *x, xfer[5];
|
|
int ret;
|
|
|
|
spi_message_init(&m);
|
|
|
|
memset(xfer, 0, sizeof(xfer));
|
|
x = &xfer[0];
|
|
|
|
cmd &= 0xff;
|
|
x->tx_buf = &cmd;
|
|
x->bits_per_word = 9;
|
|
x->len = 2;
|
|
|
|
if (rlen > 1 && wlen == 0) {
|
|
/*
|
|
* Between the command and the response data there is a
|
|
* dummy clock cycle. Add an extra bit after the command
|
|
* word to account for this.
|
|
*/
|
|
x->bits_per_word = 10;
|
|
cmd <<= 1;
|
|
}
|
|
spi_message_add_tail(x, &m);
|
|
|
|
if (wlen) {
|
|
x++;
|
|
x->tx_buf = wbuf;
|
|
x->len = wlen;
|
|
x->bits_per_word = 9;
|
|
spi_message_add_tail(x, &m);
|
|
}
|
|
|
|
if (rlen) {
|
|
x++;
|
|
x->rx_buf = rbuf;
|
|
x->len = rlen;
|
|
spi_message_add_tail(x, &m);
|
|
}
|
|
|
|
ret = spi_sync(lcd->spi, &m);
|
|
if (ret < 0)
|
|
dev_dbg(&lcd->spi->dev, "spi_sync %d\n", ret);
|
|
}
|
|
|
|
static inline void acx565akm_cmd(struct acx565akm_panel *lcd, int cmd)
|
|
{
|
|
acx565akm_transfer(lcd, cmd, NULL, 0, NULL, 0);
|
|
}
|
|
|
|
static inline void acx565akm_write(struct acx565akm_panel *lcd,
|
|
int reg, const u8 *buf, int len)
|
|
{
|
|
acx565akm_transfer(lcd, reg, buf, len, NULL, 0);
|
|
}
|
|
|
|
static inline void acx565akm_read(struct acx565akm_panel *lcd,
|
|
int reg, u8 *buf, int len)
|
|
{
|
|
acx565akm_transfer(lcd, reg, NULL, 0, buf, len);
|
|
}
|
|
|
|
/* -----------------------------------------------------------------------------
|
|
* Auto Brightness Control Via sysfs
|
|
*/
|
|
|
|
static unsigned int acx565akm_get_cabc_mode(struct acx565akm_panel *lcd)
|
|
{
|
|
return lcd->cabc_mode;
|
|
}
|
|
|
|
static void acx565akm_set_cabc_mode(struct acx565akm_panel *lcd,
|
|
unsigned int mode)
|
|
{
|
|
u16 cabc_ctrl;
|
|
|
|
lcd->cabc_mode = mode;
|
|
if (!lcd->enabled)
|
|
return;
|
|
cabc_ctrl = 0;
|
|
acx565akm_read(lcd, MIPID_CMD_READ_CABC, (u8 *)&cabc_ctrl, 1);
|
|
cabc_ctrl &= ~3;
|
|
cabc_ctrl |= (1 << 8) | (mode & 3);
|
|
acx565akm_write(lcd, MIPID_CMD_WRITE_CABC, (u8 *)&cabc_ctrl, 2);
|
|
}
|
|
|
|
static unsigned int acx565akm_get_hw_cabc_mode(struct acx565akm_panel *lcd)
|
|
{
|
|
u8 cabc_ctrl;
|
|
|
|
acx565akm_read(lcd, MIPID_CMD_READ_CABC, &cabc_ctrl, 1);
|
|
return cabc_ctrl & 3;
|
|
}
|
|
|
|
static const char * const acx565akm_cabc_modes[] = {
|
|
"off", /* always used when CABC is not supported */
|
|
"ui",
|
|
"still-image",
|
|
"moving-image",
|
|
};
|
|
|
|
static ssize_t cabc_mode_show(struct device *dev,
|
|
struct device_attribute *attr,
|
|
char *buf)
|
|
{
|
|
struct acx565akm_panel *lcd = dev_get_drvdata(dev);
|
|
const char *mode_str;
|
|
int mode;
|
|
|
|
if (!lcd->has_cabc)
|
|
mode = 0;
|
|
else
|
|
mode = acx565akm_get_cabc_mode(lcd);
|
|
|
|
mode_str = "unknown";
|
|
if (mode >= 0 && mode < ARRAY_SIZE(acx565akm_cabc_modes))
|
|
mode_str = acx565akm_cabc_modes[mode];
|
|
|
|
return sprintf(buf, "%s\n", mode_str);
|
|
}
|
|
|
|
static ssize_t cabc_mode_store(struct device *dev,
|
|
struct device_attribute *attr,
|
|
const char *buf, size_t count)
|
|
{
|
|
struct acx565akm_panel *lcd = dev_get_drvdata(dev);
|
|
unsigned int i;
|
|
|
|
for (i = 0; i < ARRAY_SIZE(acx565akm_cabc_modes); i++) {
|
|
const char *mode_str = acx565akm_cabc_modes[i];
|
|
int cmp_len = strlen(mode_str);
|
|
|
|
if (count > 0 && buf[count - 1] == '\n')
|
|
count--;
|
|
if (count != cmp_len)
|
|
continue;
|
|
|
|
if (strncmp(buf, mode_str, cmp_len) == 0)
|
|
break;
|
|
}
|
|
|
|
if (i == ARRAY_SIZE(acx565akm_cabc_modes))
|
|
return -EINVAL;
|
|
|
|
if (!lcd->has_cabc && i != 0)
|
|
return -EINVAL;
|
|
|
|
mutex_lock(&lcd->mutex);
|
|
acx565akm_set_cabc_mode(lcd, i);
|
|
mutex_unlock(&lcd->mutex);
|
|
|
|
return count;
|
|
}
|
|
|
|
static ssize_t cabc_available_modes_show(struct device *dev,
|
|
struct device_attribute *attr,
|
|
char *buf)
|
|
{
|
|
struct acx565akm_panel *lcd = dev_get_drvdata(dev);
|
|
unsigned int i;
|
|
size_t len = 0;
|
|
|
|
if (!lcd->has_cabc)
|
|
return sprintf(buf, "%s\n", acx565akm_cabc_modes[0]);
|
|
|
|
for (i = 0; i < ARRAY_SIZE(acx565akm_cabc_modes); i++)
|
|
len += sprintf(&buf[len], "%s%s", i ? " " : "",
|
|
acx565akm_cabc_modes[i]);
|
|
|
|
buf[len++] = '\n';
|
|
|
|
return len;
|
|
}
|
|
|
|
static DEVICE_ATTR_RW(cabc_mode);
|
|
static DEVICE_ATTR_RO(cabc_available_modes);
|
|
|
|
static struct attribute *acx565akm_cabc_attrs[] = {
|
|
&dev_attr_cabc_mode.attr,
|
|
&dev_attr_cabc_available_modes.attr,
|
|
NULL,
|
|
};
|
|
|
|
static const struct attribute_group acx565akm_cabc_attr_group = {
|
|
.attrs = acx565akm_cabc_attrs,
|
|
};
|
|
|
|
/* -----------------------------------------------------------------------------
|
|
* Backlight Device
|
|
*/
|
|
|
|
static int acx565akm_get_actual_brightness(struct acx565akm_panel *lcd)
|
|
{
|
|
u8 bv;
|
|
|
|
acx565akm_read(lcd, MIPI_DCS_GET_DISPLAY_BRIGHTNESS, &bv, 1);
|
|
|
|
return bv;
|
|
}
|
|
|
|
static void acx565akm_set_brightness(struct acx565akm_panel *lcd, int level)
|
|
{
|
|
u16 ctrl;
|
|
int bv;
|
|
|
|
bv = level | (1 << 8);
|
|
acx565akm_write(lcd, MIPI_DCS_SET_DISPLAY_BRIGHTNESS, (u8 *)&bv, 2);
|
|
|
|
acx565akm_read(lcd, MIPI_DCS_GET_CONTROL_DISPLAY, (u8 *)&ctrl, 1);
|
|
if (level)
|
|
ctrl |= CTRL_DISP_BRIGHTNESS_CTRL_ON |
|
|
CTRL_DISP_BACKLIGHT_ON;
|
|
else
|
|
ctrl &= ~(CTRL_DISP_BRIGHTNESS_CTRL_ON |
|
|
CTRL_DISP_BACKLIGHT_ON);
|
|
|
|
ctrl |= 1 << 8;
|
|
acx565akm_write(lcd, MIPI_DCS_WRITE_CONTROL_DISPLAY, (u8 *)&ctrl, 2);
|
|
}
|
|
|
|
static int acx565akm_bl_update_status_locked(struct backlight_device *dev)
|
|
{
|
|
struct acx565akm_panel *lcd = dev_get_drvdata(&dev->dev);
|
|
int level;
|
|
|
|
if (dev->props.fb_blank == FB_BLANK_UNBLANK &&
|
|
dev->props.power == FB_BLANK_UNBLANK)
|
|
level = dev->props.brightness;
|
|
else
|
|
level = 0;
|
|
|
|
acx565akm_set_brightness(lcd, level);
|
|
|
|
return 0;
|
|
}
|
|
|
|
static int acx565akm_bl_update_status(struct backlight_device *dev)
|
|
{
|
|
struct acx565akm_panel *lcd = dev_get_drvdata(&dev->dev);
|
|
int ret;
|
|
|
|
mutex_lock(&lcd->mutex);
|
|
ret = acx565akm_bl_update_status_locked(dev);
|
|
mutex_unlock(&lcd->mutex);
|
|
|
|
return ret;
|
|
}
|
|
|
|
static int acx565akm_bl_get_intensity(struct backlight_device *dev)
|
|
{
|
|
struct acx565akm_panel *lcd = dev_get_drvdata(&dev->dev);
|
|
unsigned int intensity;
|
|
|
|
mutex_lock(&lcd->mutex);
|
|
|
|
if (dev->props.fb_blank == FB_BLANK_UNBLANK &&
|
|
dev->props.power == FB_BLANK_UNBLANK)
|
|
intensity = acx565akm_get_actual_brightness(lcd);
|
|
else
|
|
intensity = 0;
|
|
|
|
mutex_unlock(&lcd->mutex);
|
|
|
|
return intensity;
|
|
}
|
|
|
|
static const struct backlight_ops acx565akm_bl_ops = {
|
|
.get_brightness = acx565akm_bl_get_intensity,
|
|
.update_status = acx565akm_bl_update_status,
|
|
};
|
|
|
|
static int acx565akm_backlight_init(struct acx565akm_panel *lcd)
|
|
{
|
|
struct backlight_properties props = {
|
|
.fb_blank = FB_BLANK_UNBLANK,
|
|
.power = FB_BLANK_UNBLANK,
|
|
.type = BACKLIGHT_RAW,
|
|
};
|
|
int ret;
|
|
|
|
lcd->backlight = backlight_device_register(lcd->name, &lcd->spi->dev,
|
|
lcd, &acx565akm_bl_ops,
|
|
&props);
|
|
if (IS_ERR(lcd->backlight)) {
|
|
ret = PTR_ERR(lcd->backlight);
|
|
lcd->backlight = NULL;
|
|
return ret;
|
|
}
|
|
|
|
if (lcd->has_cabc) {
|
|
ret = sysfs_create_group(&lcd->backlight->dev.kobj,
|
|
&acx565akm_cabc_attr_group);
|
|
if (ret < 0) {
|
|
dev_err(&lcd->spi->dev,
|
|
"%s failed to create sysfs files\n", __func__);
|
|
backlight_device_unregister(lcd->backlight);
|
|
return ret;
|
|
}
|
|
|
|
lcd->cabc_mode = acx565akm_get_hw_cabc_mode(lcd);
|
|
}
|
|
|
|
lcd->backlight->props.max_brightness = 255;
|
|
lcd->backlight->props.brightness = acx565akm_get_actual_brightness(lcd);
|
|
|
|
acx565akm_bl_update_status_locked(lcd->backlight);
|
|
|
|
return 0;
|
|
}
|
|
|
|
static void acx565akm_backlight_cleanup(struct acx565akm_panel *lcd)
|
|
{
|
|
if (lcd->has_cabc)
|
|
sysfs_remove_group(&lcd->backlight->dev.kobj,
|
|
&acx565akm_cabc_attr_group);
|
|
|
|
backlight_device_unregister(lcd->backlight);
|
|
}
|
|
|
|
/* -----------------------------------------------------------------------------
|
|
* DRM Bridge Operations
|
|
*/
|
|
|
|
static void acx565akm_set_sleep_mode(struct acx565akm_panel *lcd, int on)
|
|
{
|
|
int cmd = on ? MIPI_DCS_ENTER_SLEEP_MODE : MIPI_DCS_EXIT_SLEEP_MODE;
|
|
unsigned long wait;
|
|
|
|
/*
|
|
* We have to keep 120msec between sleep in/out commands.
|
|
* (8.2.15, 8.2.16).
|
|
*/
|
|
wait = lcd->hw_guard_end - jiffies;
|
|
if ((long)wait > 0 && wait <= lcd->hw_guard_wait) {
|
|
set_current_state(TASK_UNINTERRUPTIBLE);
|
|
schedule_timeout(wait);
|
|
}
|
|
|
|
acx565akm_cmd(lcd, cmd);
|
|
|
|
lcd->hw_guard_wait = msecs_to_jiffies(120);
|
|
lcd->hw_guard_end = jiffies + lcd->hw_guard_wait;
|
|
}
|
|
|
|
static void acx565akm_set_display_state(struct acx565akm_panel *lcd,
|
|
int enabled)
|
|
{
|
|
int cmd = enabled ? MIPI_DCS_SET_DISPLAY_ON : MIPI_DCS_SET_DISPLAY_OFF;
|
|
|
|
acx565akm_cmd(lcd, cmd);
|
|
}
|
|
|
|
static int acx565akm_power_on(struct acx565akm_panel *lcd)
|
|
{
|
|
/*FIXME tweak me */
|
|
msleep(50);
|
|
|
|
gpiod_set_value(lcd->reset_gpio, 1);
|
|
|
|
if (lcd->enabled) {
|
|
dev_dbg(&lcd->spi->dev, "panel already enabled\n");
|
|
return 0;
|
|
}
|
|
|
|
/*
|
|
* We have to meet all the following delay requirements:
|
|
* 1. tRW: reset pulse width 10usec (7.12.1)
|
|
* 2. tRT: reset cancel time 5msec (7.12.1)
|
|
* 3. Providing PCLK,HS,VS signals for 2 frames = ~50msec worst
|
|
* case (7.6.2)
|
|
* 4. 120msec before the sleep out command (7.12.1)
|
|
*/
|
|
msleep(120);
|
|
|
|
acx565akm_set_sleep_mode(lcd, 0);
|
|
lcd->enabled = true;
|
|
|
|
/* 5msec between sleep out and the next command. (8.2.16) */
|
|
usleep_range(5000, 10000);
|
|
acx565akm_set_display_state(lcd, 1);
|
|
acx565akm_set_cabc_mode(lcd, lcd->cabc_mode);
|
|
|
|
return acx565akm_bl_update_status_locked(lcd->backlight);
|
|
}
|
|
|
|
static void acx565akm_power_off(struct acx565akm_panel *lcd)
|
|
{
|
|
if (!lcd->enabled)
|
|
return;
|
|
|
|
acx565akm_set_display_state(lcd, 0);
|
|
acx565akm_set_sleep_mode(lcd, 1);
|
|
lcd->enabled = false;
|
|
/*
|
|
* We have to provide PCLK,HS,VS signals for 2 frames (worst case
|
|
* ~50msec) after sending the sleep in command and asserting the
|
|
* reset signal. We probably could assert the reset w/o the delay
|
|
* but we still delay to avoid possible artifacts. (7.6.1)
|
|
*/
|
|
msleep(50);
|
|
|
|
gpiod_set_value(lcd->reset_gpio, 0);
|
|
|
|
/* FIXME need to tweak this delay */
|
|
msleep(100);
|
|
}
|
|
|
|
static int acx565akm_disable(struct drm_panel *panel)
|
|
{
|
|
struct acx565akm_panel *lcd = to_acx565akm_device(panel);
|
|
|
|
mutex_lock(&lcd->mutex);
|
|
acx565akm_power_off(lcd);
|
|
mutex_unlock(&lcd->mutex);
|
|
|
|
return 0;
|
|
}
|
|
|
|
static int acx565akm_enable(struct drm_panel *panel)
|
|
{
|
|
struct acx565akm_panel *lcd = to_acx565akm_device(panel);
|
|
|
|
mutex_lock(&lcd->mutex);
|
|
acx565akm_power_on(lcd);
|
|
mutex_unlock(&lcd->mutex);
|
|
|
|
return 0;
|
|
}
|
|
|
|
static const struct drm_display_mode acx565akm_mode = {
|
|
.clock = 24000,
|
|
.hdisplay = 800,
|
|
.hsync_start = 800 + 28,
|
|
.hsync_end = 800 + 28 + 4,
|
|
.htotal = 800 + 28 + 4 + 24,
|
|
.vdisplay = 480,
|
|
.vsync_start = 480 + 3,
|
|
.vsync_end = 480 + 3 + 3,
|
|
.vtotal = 480 + 3 + 3 + 4,
|
|
.type = DRM_MODE_TYPE_DRIVER | DRM_MODE_TYPE_PREFERRED,
|
|
.flags = DRM_MODE_FLAG_NHSYNC | DRM_MODE_FLAG_NVSYNC,
|
|
.width_mm = 77,
|
|
.height_mm = 46,
|
|
};
|
|
|
|
static int acx565akm_get_modes(struct drm_panel *panel,
|
|
struct drm_connector *connector)
|
|
{
|
|
struct drm_display_mode *mode;
|
|
|
|
mode = drm_mode_duplicate(connector->dev, &acx565akm_mode);
|
|
if (!mode)
|
|
return -ENOMEM;
|
|
|
|
drm_mode_set_name(mode);
|
|
drm_mode_probed_add(connector, mode);
|
|
|
|
connector->display_info.width_mm = acx565akm_mode.width_mm;
|
|
connector->display_info.height_mm = acx565akm_mode.height_mm;
|
|
connector->display_info.bus_flags = DRM_BUS_FLAG_DE_HIGH
|
|
| DRM_BUS_FLAG_SYNC_SAMPLE_POSEDGE
|
|
| DRM_BUS_FLAG_PIXDATA_SAMPLE_NEGEDGE;
|
|
|
|
return 1;
|
|
}
|
|
|
|
static const struct drm_panel_funcs acx565akm_funcs = {
|
|
.disable = acx565akm_disable,
|
|
.enable = acx565akm_enable,
|
|
.get_modes = acx565akm_get_modes,
|
|
};
|
|
|
|
/* -----------------------------------------------------------------------------
|
|
* Probe, Detect and Remove
|
|
*/
|
|
|
|
static int acx565akm_detect(struct acx565akm_panel *lcd)
|
|
{
|
|
__be32 value;
|
|
u32 status;
|
|
int ret = 0;
|
|
|
|
/*
|
|
* After being taken out of reset the panel needs 5ms before the first
|
|
* command can be sent.
|
|
*/
|
|
gpiod_set_value(lcd->reset_gpio, 1);
|
|
usleep_range(5000, 10000);
|
|
|
|
acx565akm_read(lcd, MIPI_DCS_GET_DISPLAY_STATUS, (u8 *)&value, 4);
|
|
status = __be32_to_cpu(value);
|
|
lcd->enabled = (status & (1 << 17)) && (status & (1 << 10));
|
|
|
|
dev_dbg(&lcd->spi->dev,
|
|
"LCD panel %s by bootloader (status 0x%04x)\n",
|
|
lcd->enabled ? "enabled" : "disabled ", status);
|
|
|
|
acx565akm_read(lcd, MIPI_DCS_GET_DISPLAY_ID, lcd->display_id, 3);
|
|
dev_dbg(&lcd->spi->dev, "MIPI display ID: %02x%02x%02x\n",
|
|
lcd->display_id[0], lcd->display_id[1], lcd->display_id[2]);
|
|
|
|
switch (lcd->display_id[0]) {
|
|
case 0x10:
|
|
lcd->model = MIPID_VER_ACX565AKM;
|
|
lcd->name = "acx565akm";
|
|
lcd->has_bc = 1;
|
|
lcd->has_cabc = 1;
|
|
break;
|
|
case 0x29:
|
|
lcd->model = MIPID_VER_L4F00311;
|
|
lcd->name = "l4f00311";
|
|
break;
|
|
case 0x45:
|
|
lcd->model = MIPID_VER_LPH8923;
|
|
lcd->name = "lph8923";
|
|
break;
|
|
case 0x83:
|
|
lcd->model = MIPID_VER_LS041Y3;
|
|
lcd->name = "ls041y3";
|
|
break;
|
|
default:
|
|
lcd->name = "unknown";
|
|
dev_err(&lcd->spi->dev, "unknown display ID\n");
|
|
ret = -ENODEV;
|
|
goto done;
|
|
}
|
|
|
|
lcd->revision = lcd->display_id[1];
|
|
|
|
dev_info(&lcd->spi->dev, "%s rev %02x panel detected\n",
|
|
lcd->name, lcd->revision);
|
|
|
|
done:
|
|
if (!lcd->enabled)
|
|
gpiod_set_value(lcd->reset_gpio, 0);
|
|
|
|
return ret;
|
|
}
|
|
|
|
static int acx565akm_probe(struct spi_device *spi)
|
|
{
|
|
struct acx565akm_panel *lcd;
|
|
int ret;
|
|
|
|
lcd = devm_kzalloc(&spi->dev, sizeof(*lcd), GFP_KERNEL);
|
|
if (!lcd)
|
|
return -ENOMEM;
|
|
|
|
spi_set_drvdata(spi, lcd);
|
|
spi->mode = SPI_MODE_3;
|
|
|
|
lcd->spi = spi;
|
|
mutex_init(&lcd->mutex);
|
|
|
|
lcd->reset_gpio = devm_gpiod_get(&spi->dev, "reset", GPIOD_OUT_LOW);
|
|
if (IS_ERR(lcd->reset_gpio)) {
|
|
dev_err(&spi->dev, "failed to get reset GPIO\n");
|
|
return PTR_ERR(lcd->reset_gpio);
|
|
}
|
|
|
|
ret = acx565akm_detect(lcd);
|
|
if (ret < 0) {
|
|
dev_err(&spi->dev, "panel detection failed\n");
|
|
return ret;
|
|
}
|
|
|
|
if (lcd->has_bc) {
|
|
ret = acx565akm_backlight_init(lcd);
|
|
if (ret < 0)
|
|
return ret;
|
|
}
|
|
|
|
drm_panel_init(&lcd->panel, &lcd->spi->dev, &acx565akm_funcs,
|
|
DRM_MODE_CONNECTOR_DPI);
|
|
|
|
drm_panel_add(&lcd->panel);
|
|
|
|
return 0;
|
|
}
|
|
|
|
static int acx565akm_remove(struct spi_device *spi)
|
|
{
|
|
struct acx565akm_panel *lcd = spi_get_drvdata(spi);
|
|
|
|
drm_panel_remove(&lcd->panel);
|
|
|
|
if (lcd->has_bc)
|
|
acx565akm_backlight_cleanup(lcd);
|
|
|
|
drm_panel_disable(&lcd->panel);
|
|
drm_panel_unprepare(&lcd->panel);
|
|
|
|
return 0;
|
|
}
|
|
|
|
static const struct of_device_id acx565akm_of_match[] = {
|
|
{ .compatible = "sony,acx565akm", },
|
|
{ /* sentinel */ },
|
|
};
|
|
|
|
MODULE_DEVICE_TABLE(of, acx565akm_of_match);
|
|
|
|
static const struct spi_device_id acx565akm_ids[] = {
|
|
{ "acx565akm", 0 },
|
|
{ /* sentinel */ }
|
|
};
|
|
|
|
MODULE_DEVICE_TABLE(spi, acx565akm_ids);
|
|
|
|
static struct spi_driver acx565akm_driver = {
|
|
.probe = acx565akm_probe,
|
|
.remove = acx565akm_remove,
|
|
.id_table = acx565akm_ids,
|
|
.driver = {
|
|
.name = "panel-sony-acx565akm",
|
|
.of_match_table = acx565akm_of_match,
|
|
},
|
|
};
|
|
|
|
module_spi_driver(acx565akm_driver);
|
|
|
|
MODULE_AUTHOR("Nokia Corporation");
|
|
MODULE_DESCRIPTION("Sony ACX565AKM LCD Panel Driver");
|
|
MODULE_LICENSE("GPL");
|