OMAPDSS: Add Sony ACX565AKM panel driver
Add Sony ACX565AKM panel driver which uses the new DSS device model and DSS ops. Signed-off-by: Tomi Valkeinen <tomi.valkeinen@ti.com> Tested-by: Aaro Koskinen <aaro.koskinen@iki.fi>
This commit is contained in:
Tomi Valkeinen
parent
dbc23840b4
commit
84192742d9
|
|
@ -38,4 +38,10 @@ config DISPLAY_PANEL_DSI_CM
|
|||
help
|
||||
Driver for generic DSI command mode panels.
|
||||
|
||||
config DISPLAY_PANEL_SONY_ACX565AKM
|
||||
tristate "ACX565AKM Panel"
|
||||
depends on SPI && BACKLIGHT_CLASS_DEVICE
|
||||
help
|
||||
This is the LCD panel used on Nokia N900
|
||||
|
||||
endmenu
|
||||
|
|
|
|||
|
|
@ -5,3 +5,4 @@ obj-$(CONFIG_DISPLAY_CONNECTOR_HDMI) += connector-hdmi.o
|
|||
obj-$(CONFIG_DISPLAY_CONNECTOR_ANALOG_TV) += connector-analog-tv.o
|
||||
obj-$(CONFIG_DISPLAY_PANEL_DPI) += panel-dpi.o
|
||||
obj-$(CONFIG_DISPLAY_PANEL_DSI_CM) += panel-dsi-cm.o
|
||||
obj-$(CONFIG_DISPLAY_PANEL_SONY_ACX565AKM) += panel-sony-acx565akm.o
|
||||
|
|
|
|||
|
|
@ -0,0 +1,865 @@
|
|||
/*
|
||||
* Sony ACX565AKM LCD Panel driver
|
||||
*
|
||||
* Copyright (C) 2010 Nokia Corporation
|
||||
*
|
||||
* Original Driver Author: Imre Deak <imre.deak@nokia.com>
|
||||
* Based on panel-generic.c by Tomi Valkeinen <tomi.valkeinen@nokia.com>
|
||||
* Adapted to new DSS2 framework: Roger Quadros <roger.quadros@nokia.com>
|
||||
*
|
||||
* This program is free software; you can redistribute it and/or modify it
|
||||
* under the terms of the GNU General Public License version 2 as published by
|
||||
* the Free Software Foundation.
|
||||
*
|
||||
* This program is distributed in the hope that it will be useful, but WITHOUT
|
||||
* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
|
||||
* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
|
||||
* more details.
|
||||
*
|
||||
* You should have received a copy of the GNU General Public License along with
|
||||
* this program. If not, see <http://www.gnu.org/licenses/>.
|
||||
*/
|
||||
|
||||
#include <linux/kernel.h>
|
||||
#include <linux/module.h>
|
||||
#include <linux/platform_device.h>
|
||||
#include <linux/delay.h>
|
||||
#include <linux/spi/spi.h>
|
||||
#include <linux/jiffies.h>
|
||||
#include <linux/sched.h>
|
||||
#include <linux/backlight.h>
|
||||
#include <linux/fb.h>
|
||||
#include <linux/gpio.h>
|
||||
|
||||
#include <video/omapdss.h>
|
||||
#include <video/omap-panel-data.h>
|
||||
|
||||
#define MIPID_CMD_READ_DISP_ID 0x04
|
||||
#define MIPID_CMD_READ_RED 0x06
|
||||
#define MIPID_CMD_READ_GREEN 0x07
|
||||
#define MIPID_CMD_READ_BLUE 0x08
|
||||
#define MIPID_CMD_READ_DISP_STATUS 0x09
|
||||
#define MIPID_CMD_RDDSDR 0x0F
|
||||
#define MIPID_CMD_SLEEP_IN 0x10
|
||||
#define MIPID_CMD_SLEEP_OUT 0x11
|
||||
#define MIPID_CMD_DISP_OFF 0x28
|
||||
#define MIPID_CMD_DISP_ON 0x29
|
||||
#define MIPID_CMD_WRITE_DISP_BRIGHTNESS 0x51
|
||||
#define MIPID_CMD_READ_DISP_BRIGHTNESS 0x52
|
||||
#define MIPID_CMD_WRITE_CTRL_DISP 0x53
|
||||
|
||||
#define CTRL_DISP_BRIGHTNESS_CTRL_ON (1 << 5)
|
||||
#define CTRL_DISP_AMBIENT_LIGHT_CTRL_ON (1 << 4)
|
||||
#define CTRL_DISP_BACKLIGHT_ON (1 << 2)
|
||||
#define CTRL_DISP_AUTO_BRIGHTNESS_ON (1 << 1)
|
||||
|
||||
#define MIPID_CMD_READ_CTRL_DISP 0x54
|
||||
#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 panel_drv_data {
|
||||
struct omap_dss_device dssdev;
|
||||
struct omap_dss_device *in;
|
||||
|
||||
int reset_gpio;
|
||||
int datapairs;
|
||||
|
||||
struct omap_video_timings videomode;
|
||||
|
||||
char *name;
|
||||
int enabled;
|
||||
int model;
|
||||
int revision;
|
||||
u8 display_id[3];
|
||||
unsigned has_bc:1;
|
||||
unsigned has_cabc:1;
|
||||
unsigned cabc_mode;
|
||||
unsigned long hw_guard_end; /* next value of jiffies
|
||||
when we can issue the
|
||||
next sleep in/out command */
|
||||
unsigned long hw_guard_wait; /* max guard time in jiffies */
|
||||
|
||||
struct spi_device *spi;
|
||||
struct mutex mutex;
|
||||
|
||||
struct backlight_device *bl_dev;
|
||||
};
|
||||
|
||||
static const struct omap_video_timings acx565akm_panel_timings = {
|
||||
.x_res = 800,
|
||||
.y_res = 480,
|
||||
.pixel_clock = 24000,
|
||||
.hfp = 28,
|
||||
.hsw = 4,
|
||||
.hbp = 24,
|
||||
.vfp = 3,
|
||||
.vsw = 3,
|
||||
.vbp = 4,
|
||||
|
||||
.vsync_level = OMAPDSS_SIG_ACTIVE_LOW,
|
||||
.hsync_level = OMAPDSS_SIG_ACTIVE_LOW,
|
||||
|
||||
.data_pclk_edge = OMAPDSS_DRIVE_SIG_RISING_EDGE,
|
||||
.de_level = OMAPDSS_SIG_ACTIVE_HIGH,
|
||||
.sync_pclk_edge = OMAPDSS_DRIVE_SIG_OPPOSITE_EDGES,
|
||||
};
|
||||
|
||||
#define to_panel_data(p) container_of(p, struct panel_drv_data, dssdev)
|
||||
|
||||
static void acx565akm_transfer(struct panel_drv_data *ddata, int cmd,
|
||||
const u8 *wbuf, int wlen, u8 *rbuf, int rlen)
|
||||
{
|
||||
struct spi_message m;
|
||||
struct spi_transfer *x, xfer[5];
|
||||
int r;
|
||||
|
||||
BUG_ON(ddata->spi == NULL);
|
||||
|
||||
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);
|
||||
}
|
||||
|
||||
r = spi_sync(ddata->spi, &m);
|
||||
if (r < 0)
|
||||
dev_dbg(&ddata->spi->dev, "spi_sync %d\n", r);
|
||||
}
|
||||
|
||||
static inline void acx565akm_cmd(struct panel_drv_data *ddata, int cmd)
|
||||
{
|
||||
acx565akm_transfer(ddata, cmd, NULL, 0, NULL, 0);
|
||||
}
|
||||
|
||||
static inline void acx565akm_write(struct panel_drv_data *ddata,
|
||||
int reg, const u8 *buf, int len)
|
||||
{
|
||||
acx565akm_transfer(ddata, reg, buf, len, NULL, 0);
|
||||
}
|
||||
|
||||
static inline void acx565akm_read(struct panel_drv_data *ddata,
|
||||
int reg, u8 *buf, int len)
|
||||
{
|
||||
acx565akm_transfer(ddata, reg, NULL, 0, buf, len);
|
||||
}
|
||||
|
||||
static void hw_guard_start(struct panel_drv_data *ddata, int guard_msec)
|
||||
{
|
||||
ddata->hw_guard_wait = msecs_to_jiffies(guard_msec);
|
||||
ddata->hw_guard_end = jiffies + ddata->hw_guard_wait;
|
||||
}
|
||||
|
||||
static void hw_guard_wait(struct panel_drv_data *ddata)
|
||||
{
|
||||
unsigned long wait = ddata->hw_guard_end - jiffies;
|
||||
|
||||
if ((long)wait > 0 && wait <= ddata->hw_guard_wait) {
|
||||
set_current_state(TASK_UNINTERRUPTIBLE);
|
||||
schedule_timeout(wait);
|
||||
}
|
||||
}
|
||||
|
||||
static void set_sleep_mode(struct panel_drv_data *ddata, int on)
|
||||
{
|
||||
int cmd;
|
||||
|
||||
if (on)
|
||||
cmd = MIPID_CMD_SLEEP_IN;
|
||||
else
|
||||
cmd = MIPID_CMD_SLEEP_OUT;
|
||||
/*
|
||||
* We have to keep 120msec between sleep in/out commands.
|
||||
* (8.2.15, 8.2.16).
|
||||
*/
|
||||
hw_guard_wait(ddata);
|
||||
acx565akm_cmd(ddata, cmd);
|
||||
hw_guard_start(ddata, 120);
|
||||
}
|
||||
|
||||
static void set_display_state(struct panel_drv_data *ddata, int enabled)
|
||||
{
|
||||
int cmd = enabled ? MIPID_CMD_DISP_ON : MIPID_CMD_DISP_OFF;
|
||||
|
||||
acx565akm_cmd(ddata, cmd);
|
||||
}
|
||||
|
||||
static int panel_enabled(struct panel_drv_data *ddata)
|
||||
{
|
||||
u32 disp_status;
|
||||
int enabled;
|
||||
|
||||
acx565akm_read(ddata, MIPID_CMD_READ_DISP_STATUS,
|
||||
(u8 *)&disp_status, 4);
|
||||
disp_status = __be32_to_cpu(disp_status);
|
||||
enabled = (disp_status & (1 << 17)) && (disp_status & (1 << 10));
|
||||
dev_dbg(&ddata->spi->dev,
|
||||
"LCD panel %senabled by bootloader (status 0x%04x)\n",
|
||||
enabled ? "" : "not ", disp_status);
|
||||
return enabled;
|
||||
}
|
||||
|
||||
static int panel_detect(struct panel_drv_data *ddata)
|
||||
{
|
||||
acx565akm_read(ddata, MIPID_CMD_READ_DISP_ID, ddata->display_id, 3);
|
||||
dev_dbg(&ddata->spi->dev, "MIPI display ID: %02x%02x%02x\n",
|
||||
ddata->display_id[0],
|
||||
ddata->display_id[1],
|
||||
ddata->display_id[2]);
|
||||
|
||||
switch (ddata->display_id[0]) {
|
||||
case 0x10:
|
||||
ddata->model = MIPID_VER_ACX565AKM;
|
||||
ddata->name = "acx565akm";
|
||||
ddata->has_bc = 1;
|
||||
ddata->has_cabc = 1;
|
||||
break;
|
||||
case 0x29:
|
||||
ddata->model = MIPID_VER_L4F00311;
|
||||
ddata->name = "l4f00311";
|
||||
break;
|
||||
case 0x45:
|
||||
ddata->model = MIPID_VER_LPH8923;
|
||||
ddata->name = "lph8923";
|
||||
break;
|
||||
case 0x83:
|
||||
ddata->model = MIPID_VER_LS041Y3;
|
||||
ddata->name = "ls041y3";
|
||||
break;
|
||||
default:
|
||||
ddata->name = "unknown";
|
||||
dev_err(&ddata->spi->dev, "invalid display ID\n");
|
||||
return -ENODEV;
|
||||
}
|
||||
|
||||
ddata->revision = ddata->display_id[1];
|
||||
|
||||
dev_info(&ddata->spi->dev, "omapfb: %s rev %02x LCD detected\n",
|
||||
ddata->name, ddata->revision);
|
||||
|
||||
return 0;
|
||||
}
|
||||
|
||||
/*----------------------Backlight Control-------------------------*/
|
||||
|
||||
static void enable_backlight_ctrl(struct panel_drv_data *ddata, int enable)
|
||||
{
|
||||
u16 ctrl;
|
||||
|
||||
acx565akm_read(ddata, MIPID_CMD_READ_CTRL_DISP, (u8 *)&ctrl, 1);
|
||||
if (enable) {
|
||||
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(ddata, MIPID_CMD_WRITE_CTRL_DISP, (u8 *)&ctrl, 2);
|
||||
}
|
||||
|
||||
static void set_cabc_mode(struct panel_drv_data *ddata, unsigned mode)
|
||||
{
|
||||
u16 cabc_ctrl;
|
||||
|
||||
ddata->cabc_mode = mode;
|
||||
if (!ddata->enabled)
|
||||
return;
|
||||
cabc_ctrl = 0;
|
||||
acx565akm_read(ddata, MIPID_CMD_READ_CABC, (u8 *)&cabc_ctrl, 1);
|
||||
cabc_ctrl &= ~3;
|
||||
cabc_ctrl |= (1 << 8) | (mode & 3);
|
||||
acx565akm_write(ddata, MIPID_CMD_WRITE_CABC, (u8 *)&cabc_ctrl, 2);
|
||||
}
|
||||
|
||||
static unsigned get_cabc_mode(struct panel_drv_data *ddata)
|
||||
{
|
||||
return ddata->cabc_mode;
|
||||
}
|
||||
|
||||
static unsigned get_hw_cabc_mode(struct panel_drv_data *ddata)
|
||||
{
|
||||
u8 cabc_ctrl;
|
||||
|
||||
acx565akm_read(ddata, MIPID_CMD_READ_CABC, &cabc_ctrl, 1);
|
||||
return cabc_ctrl & 3;
|
||||
}
|
||||
|
||||
static void acx565akm_set_brightness(struct panel_drv_data *ddata, int level)
|
||||
{
|
||||
int bv;
|
||||
|
||||
bv = level | (1 << 8);
|
||||
acx565akm_write(ddata, MIPID_CMD_WRITE_DISP_BRIGHTNESS, (u8 *)&bv, 2);
|
||||
|
||||
if (level)
|
||||
enable_backlight_ctrl(ddata, 1);
|
||||
else
|
||||
enable_backlight_ctrl(ddata, 0);
|
||||
}
|
||||
|
||||
static int acx565akm_get_actual_brightness(struct panel_drv_data *ddata)
|
||||
{
|
||||
u8 bv;
|
||||
|
||||
acx565akm_read(ddata, MIPID_CMD_READ_DISP_BRIGHTNESS, &bv, 1);
|
||||
|
||||
return bv;
|
||||
}
|
||||
|
||||
|
||||
static int acx565akm_bl_update_status(struct backlight_device *dev)
|
||||
{
|
||||
struct panel_drv_data *ddata = dev_get_drvdata(&dev->dev);
|
||||
int r;
|
||||
int level;
|
||||
|
||||
dev_dbg(&ddata->spi->dev, "%s\n", __func__);
|
||||
|
||||
mutex_lock(&ddata->mutex);
|
||||
|
||||
if (dev->props.fb_blank == FB_BLANK_UNBLANK &&
|
||||
dev->props.power == FB_BLANK_UNBLANK)
|
||||
level = dev->props.brightness;
|
||||
else
|
||||
level = 0;
|
||||
|
||||
r = 0;
|
||||
if (ddata->has_bc)
|
||||
acx565akm_set_brightness(ddata, level);
|
||||
else
|
||||
r = -ENODEV;
|
||||
|
||||
mutex_unlock(&ddata->mutex);
|
||||
|
||||
return r;
|
||||
}
|
||||
|
||||
static int acx565akm_bl_get_intensity(struct backlight_device *dev)
|
||||
{
|
||||
struct panel_drv_data *ddata = dev_get_drvdata(&dev->dev);
|
||||
|
||||
dev_dbg(&dev->dev, "%s\n", __func__);
|
||||
|
||||
if (!ddata->has_bc)
|
||||
return -ENODEV;
|
||||
|
||||
if (dev->props.fb_blank == FB_BLANK_UNBLANK &&
|
||||
dev->props.power == FB_BLANK_UNBLANK) {
|
||||
if (ddata->has_bc)
|
||||
return acx565akm_get_actual_brightness(ddata);
|
||||
else
|
||||
return dev->props.brightness;
|
||||
}
|
||||
|
||||
return 0;
|
||||
}
|
||||
|
||||
static const struct backlight_ops acx565akm_bl_ops = {
|
||||
.get_brightness = acx565akm_bl_get_intensity,
|
||||
.update_status = acx565akm_bl_update_status,
|
||||
};
|
||||
|
||||
/*--------------------Auto Brightness control via Sysfs---------------------*/
|
||||
|
||||
static const char * const cabc_modes[] = {
|
||||
"off", /* always used when CABC is not supported */
|
||||
"ui",
|
||||
"still-image",
|
||||
"moving-image",
|
||||
};
|
||||
|
||||
static ssize_t show_cabc_mode(struct device *dev,
|
||||
struct device_attribute *attr,
|
||||
char *buf)
|
||||
{
|
||||
struct panel_drv_data *ddata = dev_get_drvdata(dev);
|
||||
const char *mode_str;
|
||||
int mode;
|
||||
int len;
|
||||
|
||||
if (!ddata->has_cabc)
|
||||
mode = 0;
|
||||
else
|
||||
mode = get_cabc_mode(ddata);
|
||||
mode_str = "unknown";
|
||||
if (mode >= 0 && mode < ARRAY_SIZE(cabc_modes))
|
||||
mode_str = cabc_modes[mode];
|
||||
len = snprintf(buf, PAGE_SIZE, "%s\n", mode_str);
|
||||
|
||||
return len < PAGE_SIZE - 1 ? len : PAGE_SIZE - 1;
|
||||
}
|
||||
|
||||
static ssize_t store_cabc_mode(struct device *dev,
|
||||
struct device_attribute *attr,
|
||||
const char *buf, size_t count)
|
||||
{
|
||||
struct panel_drv_data *ddata = dev_get_drvdata(dev);
|
||||
int i;
|
||||
|
||||
for (i = 0; i < ARRAY_SIZE(cabc_modes); i++) {
|
||||
const char *mode_str = 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(cabc_modes))
|
||||
return -EINVAL;
|
||||
|
||||
if (!ddata->has_cabc && i != 0)
|
||||
return -EINVAL;
|
||||
|
||||
mutex_lock(&ddata->mutex);
|
||||
set_cabc_mode(ddata, i);
|
||||
mutex_unlock(&ddata->mutex);
|
||||
|
||||
return count;
|
||||
}
|
||||
|
||||
static ssize_t show_cabc_available_modes(struct device *dev,
|
||||
struct device_attribute *attr,
|
||||
char *buf)
|
||||
{
|
||||
struct panel_drv_data *ddata = dev_get_drvdata(dev);
|
||||
int len;
|
||||
int i;
|
||||
|
||||
if (!ddata->has_cabc)
|
||||
return snprintf(buf, PAGE_SIZE, "%s\n", cabc_modes[0]);
|
||||
|
||||
for (i = 0, len = 0;
|
||||
len < PAGE_SIZE && i < ARRAY_SIZE(cabc_modes); i++)
|
||||
len += snprintf(&buf[len], PAGE_SIZE - len, "%s%s%s",
|
||||
i ? " " : "", cabc_modes[i],
|
||||
i == ARRAY_SIZE(cabc_modes) - 1 ? "\n" : "");
|
||||
|
||||
return len < PAGE_SIZE ? len : PAGE_SIZE - 1;
|
||||
}
|
||||
|
||||
static DEVICE_ATTR(cabc_mode, S_IRUGO | S_IWUSR,
|
||||
show_cabc_mode, store_cabc_mode);
|
||||
static DEVICE_ATTR(cabc_available_modes, S_IRUGO,
|
||||
show_cabc_available_modes, NULL);
|
||||
|
||||
static struct attribute *bldev_attrs[] = {
|
||||
&dev_attr_cabc_mode.attr,
|
||||
&dev_attr_cabc_available_modes.attr,
|
||||
NULL,
|
||||
};
|
||||
|
||||
static struct attribute_group bldev_attr_group = {
|
||||
.attrs = bldev_attrs,
|
||||
};
|
||||
|
||||
static int acx565akm_connect(struct omap_dss_device *dssdev)
|
||||
{
|
||||
struct panel_drv_data *ddata = to_panel_data(dssdev);
|
||||
struct omap_dss_device *in = ddata->in;
|
||||
int r;
|
||||
|
||||
if (omapdss_device_is_connected(dssdev))
|
||||
return 0;
|
||||
|
||||
r = in->ops.sdi->connect(in, dssdev);
|
||||
if (r)
|
||||
return r;
|
||||
|
||||
return 0;
|
||||
}
|
||||
|
||||
static void acx565akm_disconnect(struct omap_dss_device *dssdev)
|
||||
{
|
||||
struct panel_drv_data *ddata = to_panel_data(dssdev);
|
||||
struct omap_dss_device *in = ddata->in;
|
||||
|
||||
if (!omapdss_device_is_connected(dssdev))
|
||||
return;
|
||||
|
||||
in->ops.sdi->disconnect(in, dssdev);
|
||||
}
|
||||
|
||||
static int acx565akm_panel_power_on(struct omap_dss_device *dssdev)
|
||||
{
|
||||
struct panel_drv_data *ddata = to_panel_data(dssdev);
|
||||
struct omap_dss_device *in = ddata->in;
|
||||
int r;
|
||||
|
||||
dev_dbg(&ddata->spi->dev, "%s\n", __func__);
|
||||
|
||||
in->ops.sdi->set_timings(in, &ddata->videomode);
|
||||
in->ops.sdi->set_datapairs(in, ddata->datapairs);
|
||||
|
||||
r = in->ops.sdi->enable(in);
|
||||
if (r) {
|
||||
pr_err("%s sdi enable failed\n", __func__);
|
||||
return r;
|
||||
}
|
||||
|
||||
/*FIXME tweak me */
|
||||
msleep(50);
|
||||
|
||||
if (gpio_is_valid(ddata->reset_gpio))
|
||||
gpio_set_value(ddata->reset_gpio, 1);
|
||||
|
||||
if (ddata->enabled) {
|
||||
dev_dbg(&ddata->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);
|
||||
|
||||
set_sleep_mode(ddata, 0);
|
||||
ddata->enabled = 1;
|
||||
|
||||
/* 5msec between sleep out and the next command. (8.2.16) */
|
||||
usleep_range(5000, 10000);
|
||||
set_display_state(ddata, 1);
|
||||
set_cabc_mode(ddata, ddata->cabc_mode);
|
||||
|
||||
mutex_unlock(&ddata->mutex);
|
||||
|
||||
return acx565akm_bl_update_status(ddata->bl_dev);
|
||||
}
|
||||
|
||||
static void acx565akm_panel_power_off(struct omap_dss_device *dssdev)
|
||||
{
|
||||
struct panel_drv_data *ddata = to_panel_data(dssdev);
|
||||
struct omap_dss_device *in = ddata->in;
|
||||
|
||||
dev_dbg(dssdev->dev, "%s\n", __func__);
|
||||
|
||||
if (!ddata->enabled)
|
||||
return;
|
||||
|
||||
set_display_state(ddata, 0);
|
||||
set_sleep_mode(ddata, 1);
|
||||
ddata->enabled = 0;
|
||||
/*
|
||||
* 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);
|
||||
|
||||
if (gpio_is_valid(ddata->reset_gpio))
|
||||
gpio_set_value(ddata->reset_gpio, 0);
|
||||
|
||||
/* FIXME need to tweak this delay */
|
||||
msleep(100);
|
||||
|
||||
in->ops.sdi->disable(in);
|
||||
}
|
||||
|
||||
static int acx565akm_enable(struct omap_dss_device *dssdev)
|
||||
{
|
||||
struct panel_drv_data *ddata = to_panel_data(dssdev);
|
||||
int r;
|
||||
|
||||
dev_dbg(dssdev->dev, "%s\n", __func__);
|
||||
|
||||
if (!omapdss_device_is_connected(dssdev))
|
||||
return -ENODEV;
|
||||
|
||||
if (omapdss_device_is_enabled(dssdev))
|
||||
return 0;
|
||||
|
||||
mutex_lock(&ddata->mutex);
|
||||
r = acx565akm_panel_power_on(dssdev);
|
||||
mutex_unlock(&ddata->mutex);
|
||||
|
||||
if (r)
|
||||
return r;
|
||||
|
||||
dssdev->state = OMAP_DSS_DISPLAY_ACTIVE;
|
||||
|
||||
return 0;
|
||||
}
|
||||
|
||||
static void acx565akm_disable(struct omap_dss_device *dssdev)
|
||||
{
|
||||
struct panel_drv_data *ddata = to_panel_data(dssdev);
|
||||
|
||||
dev_dbg(dssdev->dev, "%s\n", __func__);
|
||||
|
||||
if (!omapdss_device_is_enabled(dssdev))
|
||||
return;
|
||||
|
||||
mutex_lock(&ddata->mutex);
|
||||
acx565akm_panel_power_off(dssdev);
|
||||
mutex_unlock(&ddata->mutex);
|
||||
|
||||
dssdev->state = OMAP_DSS_DISPLAY_DISABLED;
|
||||
}
|
||||
|
||||
static void acx565akm_set_timings(struct omap_dss_device *dssdev,
|
||||
struct omap_video_timings *timings)
|
||||
{
|
||||
struct panel_drv_data *ddata = to_panel_data(dssdev);
|
||||
struct omap_dss_device *in = ddata->in;
|
||||
|
||||
ddata->videomode = *timings;
|
||||
dssdev->panel.timings = *timings;
|
||||
|
||||
in->ops.sdi->set_timings(in, timings);
|
||||
}
|
||||
|
||||
static void acx565akm_get_timings(struct omap_dss_device *dssdev,
|
||||
struct omap_video_timings *timings)
|
||||
{
|
||||
struct panel_drv_data *ddata = to_panel_data(dssdev);
|
||||
|
||||
*timings = ddata->videomode;
|
||||
}
|
||||
|
||||
static int acx565akm_check_timings(struct omap_dss_device *dssdev,
|
||||
struct omap_video_timings *timings)
|
||||
{
|
||||
struct panel_drv_data *ddata = to_panel_data(dssdev);
|
||||
struct omap_dss_device *in = ddata->in;
|
||||
|
||||
return in->ops.sdi->check_timings(in, timings);
|
||||
}
|
||||
|
||||
static struct omap_dss_driver acx565akm_ops = {
|
||||
.connect = acx565akm_connect,
|
||||
.disconnect = acx565akm_disconnect,
|
||||
|
||||
.enable = acx565akm_enable,
|
||||
.disable = acx565akm_disable,
|
||||
|
||||
.set_timings = acx565akm_set_timings,
|
||||
.get_timings = acx565akm_get_timings,
|
||||
.check_timings = acx565akm_check_timings,
|
||||
|
||||
.get_resolution = omapdss_default_get_resolution,
|
||||
};
|
||||
|
||||
static int acx565akm_probe_pdata(struct spi_device *spi)
|
||||
{
|
||||
const struct panel_acx565akm_platform_data *pdata;
|
||||
struct panel_drv_data *ddata = dev_get_drvdata(&spi->dev);
|
||||
struct omap_dss_device *dssdev, *in;
|
||||
|
||||
pdata = dev_get_platdata(&spi->dev);
|
||||
|
||||
ddata->reset_gpio = pdata->reset_gpio;
|
||||
|
||||
in = omap_dss_find_output(pdata->source);
|
||||
if (in == NULL) {
|
||||
dev_err(&spi->dev, "failed to find video source '%s'\n",
|
||||
pdata->source);
|
||||
return -EPROBE_DEFER;
|
||||
}
|
||||
ddata->in = in;
|
||||
|
||||
ddata->datapairs = pdata->datapairs;
|
||||
|
||||
dssdev = &ddata->dssdev;
|
||||
dssdev->name = pdata->name;
|
||||
|
||||
return 0;
|
||||
}
|
||||
|
||||
static int acx565akm_probe(struct spi_device *spi)
|
||||
{
|
||||
struct panel_drv_data *ddata;
|
||||
struct omap_dss_device *dssdev;
|
||||
struct backlight_device *bldev;
|
||||
int max_brightness, brightness;
|
||||
struct backlight_properties props;
|
||||
int r;
|
||||
|
||||
dev_dbg(&spi->dev, "%s\n", __func__);
|
||||
|
||||
spi->mode = SPI_MODE_3;
|
||||
|
||||
ddata = devm_kzalloc(&spi->dev, sizeof(*ddata), GFP_KERNEL);
|
||||
if (ddata == NULL)
|
||||
return -ENOMEM;
|
||||
|
||||
dev_set_drvdata(&spi->dev, ddata);
|
||||
|
||||
ddata->spi = spi;
|
||||
|
||||
mutex_init(&ddata->mutex);
|
||||
|
||||
if (dev_get_platdata(&spi->dev)) {
|
||||
r = acx565akm_probe_pdata(spi);
|
||||
if (r)
|
||||
return r;
|
||||
} else {
|
||||
return -ENODEV;
|
||||
}
|
||||
|
||||
if (gpio_is_valid(ddata->reset_gpio)) {
|
||||
r = devm_gpio_request_one(&spi->dev, ddata->reset_gpio,
|
||||
GPIOF_OUT_INIT_LOW, "lcd reset");
|
||||
if (r)
|
||||
goto err_gpio;
|
||||
}
|
||||
|
||||
if (gpio_is_valid(ddata->reset_gpio))
|
||||
gpio_set_value(ddata->reset_gpio, 1);
|
||||
|
||||
/*
|
||||
* After reset we have to wait 5 msec before the first
|
||||
* command can be sent.
|
||||
*/
|
||||
usleep_range(5000, 10000);
|
||||
|
||||
ddata->enabled = panel_enabled(ddata);
|
||||
|
||||
r = panel_detect(ddata);
|
||||
|
||||
if (!ddata->enabled && gpio_is_valid(ddata->reset_gpio))
|
||||
gpio_set_value(ddata->reset_gpio, 0);
|
||||
|
||||
if (r) {
|
||||
dev_err(&spi->dev, "%s panel detect error\n", __func__);
|
||||
goto err_detect;
|
||||
}
|
||||
|
||||
memset(&props, 0, sizeof(props));
|
||||
props.fb_blank = FB_BLANK_UNBLANK;
|
||||
props.power = FB_BLANK_UNBLANK;
|
||||
props.type = BACKLIGHT_RAW;
|
||||
|
||||
bldev = backlight_device_register("acx565akm", &ddata->spi->dev,
|
||||
ddata, &acx565akm_bl_ops, &props);
|
||||
ddata->bl_dev = bldev;
|
||||
if (ddata->has_cabc) {
|
||||
r = sysfs_create_group(&bldev->dev.kobj, &bldev_attr_group);
|
||||
if (r) {
|
||||
dev_err(&bldev->dev,
|
||||
"%s failed to create sysfs files\n", __func__);
|
||||
goto err_sysfs;
|
||||
}
|
||||
ddata->cabc_mode = get_hw_cabc_mode(ddata);
|
||||
}
|
||||
|
||||
max_brightness = 255;
|
||||
|
||||
if (ddata->has_bc)
|
||||
brightness = acx565akm_get_actual_brightness(ddata);
|
||||
else
|
||||
brightness = 0;
|
||||
|
||||
bldev->props.max_brightness = max_brightness;
|
||||
bldev->props.brightness = brightness;
|
||||
|
||||
acx565akm_bl_update_status(bldev);
|
||||
|
||||
|
||||
ddata->videomode = acx565akm_panel_timings;
|
||||
|
||||
dssdev = &ddata->dssdev;
|
||||
dssdev->dev = &spi->dev;
|
||||
dssdev->driver = &acx565akm_ops;
|
||||
dssdev->type = OMAP_DISPLAY_TYPE_SDI;
|
||||
dssdev->owner = THIS_MODULE;
|
||||
dssdev->panel.timings = ddata->videomode;
|
||||
|
||||
r = omapdss_register_display(dssdev);
|
||||
if (r) {
|
||||
dev_err(&spi->dev, "Failed to register panel\n");
|
||||
goto err_reg;
|
||||
}
|
||||
|
||||
return 0;
|
||||
|
||||
err_reg:
|
||||
sysfs_remove_group(&bldev->dev.kobj, &bldev_attr_group);
|
||||
err_sysfs:
|
||||
backlight_device_unregister(bldev);
|
||||
err_detect:
|
||||
err_gpio:
|
||||
omap_dss_put_device(ddata->in);
|
||||
return r;
|
||||
}
|
||||
|
||||
static int acx565akm_remove(struct spi_device *spi)
|
||||
{
|
||||
struct panel_drv_data *ddata = dev_get_drvdata(&spi->dev);
|
||||
struct omap_dss_device *dssdev = &ddata->dssdev;
|
||||
struct omap_dss_device *in = ddata->in;
|
||||
|
||||
dev_dbg(&ddata->spi->dev, "%s\n", __func__);
|
||||
|
||||
sysfs_remove_group(&ddata->bl_dev->dev.kobj, &bldev_attr_group);
|
||||
backlight_device_unregister(ddata->bl_dev);
|
||||
|
||||
omapdss_unregister_display(dssdev);
|
||||
|
||||
acx565akm_disable(dssdev);
|
||||
acx565akm_disconnect(dssdev);
|
||||
|
||||
omap_dss_put_device(in);
|
||||
|
||||
return 0;
|
||||
}
|
||||
|
||||
static struct spi_driver acx565akm_driver = {
|
||||
.driver = {
|
||||
.name = "acx565akm",
|
||||
.owner = THIS_MODULE,
|
||||
},
|
||||
.probe = acx565akm_probe,
|
||||
.remove = acx565akm_remove,
|
||||
};
|
||||
|
||||
module_spi_driver(acx565akm_driver);
|
||||
|
||||
MODULE_AUTHOR("Nokia Corporation");
|
||||
MODULE_DESCRIPTION("acx565akm LCD Driver");
|
||||
MODULE_LICENSE("GPL");
|
||||
|
|
@ -264,4 +264,20 @@ struct panel_dsicm_platform_data {
|
|||
struct omap_dsi_pin_config pin_config;
|
||||
};
|
||||
|
||||
/**
|
||||
* panel_acx565akm platform data
|
||||
* @name: name for this display entity
|
||||
* @source: name of the display entity used as a video source
|
||||
* @reset_gpio: gpio to reset the panel (or -1)
|
||||
* @datapairs: number of SDI datapairs
|
||||
*/
|
||||
struct panel_acx565akm_platform_data {
|
||||
const char *name;
|
||||
const char *source;
|
||||
|
||||
int reset_gpio;
|
||||
|
||||
int datapairs;
|
||||
};
|
||||
|
||||
#endif /* __OMAP_PANEL_DATA_H */
|
||||
|
|
|
|||
Loading…
Reference in New Issue