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linux/drivers/video/omap2/displays/panel-nec-nl8048hl11-01b.c
Tomi Valkeinen 998c336d4c OMAPDSS: remove omap_dss_device's suspend/resume 
The panel drivers contain enable, disable, suspend and resume calls.
The suspend and resume are effectively identical to disable and enable.

This patch removes panel suspend and enable code from omapdss and the
panel drivers, and replaces their use with enable and disable.

Signed-off-by: Tomi Valkeinen <tomi.valkeinen@ti.com>
2012-10-24 08:46:23 +03:00

340 lines
8.4 KiB
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/*
* Support for NEC-nl8048hl11-01b panel driver
*
* Copyright (C) 2010 Texas Instruments Inc.
* Author: Erik Gilling <konkers@android.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/module.h>
#include <linux/delay.h>
#include <linux/spi/spi.h>
#include <linux/backlight.h>
#include <linux/fb.h>
#include <video/omapdss.h>
#define LCD_XRES 800
#define LCD_YRES 480
/*
* NEC PIX Clock Ratings
* MIN:21.8MHz TYP:23.8MHz MAX:25.7MHz
*/
#define LCD_PIXEL_CLOCK 23800
struct nec_8048_data {
struct backlight_device *bl;
};
static const struct {
unsigned char addr;
unsigned char dat;
} nec_8048_init_seq[] = {
{ 3, 0x01 }, { 0, 0x00 }, { 1, 0x01 }, { 4, 0x00 }, { 5, 0x14 },
{ 6, 0x24 }, { 16, 0xD7 }, { 17, 0x00 }, { 18, 0x00 }, { 19, 0x55 },
{ 20, 0x01 }, { 21, 0x70 }, { 22, 0x1E }, { 23, 0x25 }, { 24, 0x25 },
{ 25, 0x02 }, { 26, 0x02 }, { 27, 0xA0 }, { 32, 0x2F }, { 33, 0x0F },
{ 34, 0x0F }, { 35, 0x0F }, { 36, 0x0F }, { 37, 0x0F }, { 38, 0x0F },
{ 39, 0x00 }, { 40, 0x02 }, { 41, 0x02 }, { 42, 0x02 }, { 43, 0x0F },
{ 44, 0x0F }, { 45, 0x0F }, { 46, 0x0F }, { 47, 0x0F }, { 48, 0x0F },
{ 49, 0x0F }, { 50, 0x00 }, { 51, 0x02 }, { 52, 0x02 }, { 53, 0x02 },
{ 80, 0x0C }, { 83, 0x42 }, { 84, 0x42 }, { 85, 0x41 }, { 86, 0x14 },
{ 89, 0x88 }, { 90, 0x01 }, { 91, 0x00 }, { 92, 0x02 }, { 93, 0x0C },
{ 94, 0x1C }, { 95, 0x27 }, { 98, 0x49 }, { 99, 0x27 }, { 102, 0x76 },
{ 103, 0x27 }, { 112, 0x01 }, { 113, 0x0E }, { 114, 0x02 },
{ 115, 0x0C }, { 118, 0x0C }, { 121, 0x30 }, { 130, 0x00 },
{ 131, 0x00 }, { 132, 0xFC }, { 134, 0x00 }, { 136, 0x00 },
{ 138, 0x00 }, { 139, 0x00 }, { 140, 0x00 }, { 141, 0xFC },
{ 143, 0x00 }, { 145, 0x00 }, { 147, 0x00 }, { 148, 0x00 },
{ 149, 0x00 }, { 150, 0xFC }, { 152, 0x00 }, { 154, 0x00 },
{ 156, 0x00 }, { 157, 0x00 }, { 2, 0x00 },
};
/*
* NEC NL8048HL11-01B Manual
* defines HFB, HSW, HBP, VFP, VSW, VBP as shown below
*/
static struct omap_video_timings nec_8048_panel_timings = {
/* 800 x 480 @ 60 Hz Reduced blanking VESA CVT 0.31M3-R */
.x_res = LCD_XRES,
.y_res = LCD_YRES,
.pixel_clock = LCD_PIXEL_CLOCK,
.hfp = 6,
.hsw = 1,
.hbp = 4,
.vfp = 3,
.vsw = 1,
.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_RISING_EDGE,
};
static int nec_8048_bl_update_status(struct backlight_device *bl)
{
struct omap_dss_device *dssdev = dev_get_drvdata(&bl->dev);
int level;
if (!dssdev->set_backlight)
return -EINVAL;
if (bl->props.fb_blank == FB_BLANK_UNBLANK &&
bl->props.power == FB_BLANK_UNBLANK)
level = bl->props.brightness;
else
level = 0;
return dssdev->set_backlight(dssdev, level);
}
static int nec_8048_bl_get_brightness(struct backlight_device *bl)
{
if (bl->props.fb_blank == FB_BLANK_UNBLANK &&
bl->props.power == FB_BLANK_UNBLANK)
return bl->props.brightness;
return 0;
}
static const struct backlight_ops nec_8048_bl_ops = {
.get_brightness = nec_8048_bl_get_brightness,
.update_status = nec_8048_bl_update_status,
};
static int nec_8048_panel_probe(struct omap_dss_device *dssdev)
{
struct backlight_device *bl;
struct nec_8048_data *necd;
struct backlight_properties props;
int r;
dssdev->panel.timings = nec_8048_panel_timings;
necd = kzalloc(sizeof(*necd), GFP_KERNEL);
if (!necd)
return -ENOMEM;
dev_set_drvdata(&dssdev->dev, necd);
memset(&props, 0, sizeof(struct backlight_properties));
props.max_brightness = 255;
bl = backlight_device_register("nec-8048", &dssdev->dev, dssdev,
&nec_8048_bl_ops, &props);
if (IS_ERR(bl)) {
r = PTR_ERR(bl);
kfree(necd);
return r;
}
necd->bl = bl;
bl->props.fb_blank = FB_BLANK_UNBLANK;
bl->props.power = FB_BLANK_UNBLANK;
bl->props.max_brightness = dssdev->max_backlight_level;
bl->props.brightness = dssdev->max_backlight_level;
r = nec_8048_bl_update_status(bl);
if (r < 0)
dev_err(&dssdev->dev, "failed to set lcd brightness\n");
return 0;
}
static void nec_8048_panel_remove(struct omap_dss_device *dssdev)
{
struct nec_8048_data *necd = dev_get_drvdata(&dssdev->dev);
struct backlight_device *bl = necd->bl;
bl->props.power = FB_BLANK_POWERDOWN;
nec_8048_bl_update_status(bl);
backlight_device_unregister(bl);
kfree(necd);
}
static int nec_8048_panel_power_on(struct omap_dss_device *dssdev)
{
int r;
struct nec_8048_data *necd = dev_get_drvdata(&dssdev->dev);
struct backlight_device *bl = necd->bl;
if (dssdev->state == OMAP_DSS_DISPLAY_ACTIVE)
return 0;
omapdss_dpi_set_timings(dssdev, &dssdev->panel.timings);
omapdss_dpi_set_data_lines(dssdev, dssdev->phy.dpi.data_lines);
r = omapdss_dpi_display_enable(dssdev);
if (r)
goto err0;
if (dssdev->platform_enable) {
r = dssdev->platform_enable(dssdev);
if (r)
goto err1;
}
r = nec_8048_bl_update_status(bl);
if (r < 0)
dev_err(&dssdev->dev, "failed to set lcd brightness\n");
return 0;
err1:
omapdss_dpi_display_disable(dssdev);
err0:
return r;
}
static void nec_8048_panel_power_off(struct omap_dss_device *dssdev)
{
struct nec_8048_data *necd = dev_get_drvdata(&dssdev->dev);
struct backlight_device *bl = necd->bl;
if (dssdev->state != OMAP_DSS_DISPLAY_ACTIVE)
return;
bl->props.brightness = 0;
nec_8048_bl_update_status(bl);
if (dssdev->platform_disable)
dssdev->platform_disable(dssdev);
omapdss_dpi_display_disable(dssdev);
}
static int nec_8048_panel_enable(struct omap_dss_device *dssdev)
{
int r;
r = nec_8048_panel_power_on(dssdev);
if (r)
return r;
dssdev->state = OMAP_DSS_DISPLAY_ACTIVE;
return 0;
}
static void nec_8048_panel_disable(struct omap_dss_device *dssdev)
{
nec_8048_panel_power_off(dssdev);
dssdev->state = OMAP_DSS_DISPLAY_DISABLED;
}
static int nec_8048_recommended_bpp(struct omap_dss_device *dssdev)
{
return 16;
}
static struct omap_dss_driver nec_8048_driver = {
.probe = nec_8048_panel_probe,
.remove = nec_8048_panel_remove,
.enable = nec_8048_panel_enable,
.disable = nec_8048_panel_disable,
.get_recommended_bpp = nec_8048_recommended_bpp,
.driver = {
.name = "NEC_8048_panel",
.owner = THIS_MODULE,
},
};
static int nec_8048_spi_send(struct spi_device *spi, unsigned char reg_addr,
unsigned char reg_data)
{
int ret = 0;
unsigned int cmd = 0, data = 0;
cmd = 0x0000 | reg_addr; /* register address write */
data = 0x0100 | reg_data ; /* register data write */
data = (cmd << 16) | data;
ret = spi_write(spi, (unsigned char *)&data, 4);
if (ret)
pr_err("error in spi_write %x\n", data);
return ret;
}
static int init_nec_8048_wvga_lcd(struct spi_device *spi)
{
unsigned int i;
/* Initialization Sequence */
/* nec_8048_spi_send(spi, REG, VAL) */
for (i = 0; i < (ARRAY_SIZE(nec_8048_init_seq) - 1); i++)
nec_8048_spi_send(spi, nec_8048_init_seq[i].addr,
nec_8048_init_seq[i].dat);
udelay(20);
nec_8048_spi_send(spi, nec_8048_init_seq[i].addr,
nec_8048_init_seq[i].dat);
return 0;
}
static int nec_8048_spi_probe(struct spi_device *spi)
{
spi->mode = SPI_MODE_0;
spi->bits_per_word = 32;
spi_setup(spi);
init_nec_8048_wvga_lcd(spi);
return omap_dss_register_driver(&nec_8048_driver);
}
static int nec_8048_spi_remove(struct spi_device *spi)
{
omap_dss_unregister_driver(&nec_8048_driver);
return 0;
}
static int nec_8048_spi_suspend(struct spi_device *spi, pm_message_t mesg)
{
nec_8048_spi_send(spi, 2, 0x01);
mdelay(40);
return 0;
}
static int nec_8048_spi_resume(struct spi_device *spi)
{
/* reinitialize the panel */
spi_setup(spi);
nec_8048_spi_send(spi, 2, 0x00);
init_nec_8048_wvga_lcd(spi);
return 0;
}
static struct spi_driver nec_8048_spi_driver = {
.probe = nec_8048_spi_probe,
.remove = __devexit_p(nec_8048_spi_remove),
.suspend = nec_8048_spi_suspend,
.resume = nec_8048_spi_resume,
.driver = {
.name = "nec_8048_spi",
.owner = THIS_MODULE,
},
};
module_spi_driver(nec_8048_spi_driver);
MODULE_AUTHOR("Erik Gilling <konkers@android.com>");
MODULE_DESCRIPTION("NEC-nl8048hl11-01b Driver");
MODULE_LICENSE("GPL");
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