2008-09-13 10:58:51 -06:00
|
|
|
/*
|
|
|
|
* LCD / Backlight control code for Sharp SL-6000x (tosa)
|
|
|
|
*
|
|
|
|
* Copyright (c) 2005 Dirk Opfer
|
|
|
|
* Copyright (c) 2007,2008 Dmitry Baryshkov
|
|
|
|
*
|
|
|
|
* 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.
|
|
|
|
*
|
|
|
|
*/
|
|
|
|
|
|
|
|
#include <linux/kernel.h>
|
|
|
|
#include <linux/module.h>
|
|
|
|
#include <linux/device.h>
|
|
|
|
#include <linux/spi/spi.h>
|
|
|
|
#include <linux/i2c.h>
|
include cleanup: Update gfp.h and slab.h includes to prepare for breaking implicit slab.h inclusion from percpu.h
percpu.h is included by sched.h and module.h and thus ends up being
included when building most .c files. percpu.h includes slab.h which
in turn includes gfp.h making everything defined by the two files
universally available and complicating inclusion dependencies.
percpu.h -> slab.h dependency is about to be removed. Prepare for
this change by updating users of gfp and slab facilities include those
headers directly instead of assuming availability. As this conversion
needs to touch large number of source files, the following script is
used as the basis of conversion.
http://userweb.kernel.org/~tj/misc/slabh-sweep.py
The script does the followings.
* Scan files for gfp and slab usages and update includes such that
only the necessary includes are there. ie. if only gfp is used,
gfp.h, if slab is used, slab.h.
* When the script inserts a new include, it looks at the include
blocks and try to put the new include such that its order conforms
to its surrounding. It's put in the include block which contains
core kernel includes, in the same order that the rest are ordered -
alphabetical, Christmas tree, rev-Xmas-tree or at the end if there
doesn't seem to be any matching order.
* If the script can't find a place to put a new include (mostly
because the file doesn't have fitting include block), it prints out
an error message indicating which .h file needs to be added to the
file.
The conversion was done in the following steps.
1. The initial automatic conversion of all .c files updated slightly
over 4000 files, deleting around 700 includes and adding ~480 gfp.h
and ~3000 slab.h inclusions. The script emitted errors for ~400
files.
2. Each error was manually checked. Some didn't need the inclusion,
some needed manual addition while adding it to implementation .h or
embedding .c file was more appropriate for others. This step added
inclusions to around 150 files.
3. The script was run again and the output was compared to the edits
from #2 to make sure no file was left behind.
4. Several build tests were done and a couple of problems were fixed.
e.g. lib/decompress_*.c used malloc/free() wrappers around slab
APIs requiring slab.h to be added manually.
5. The script was run on all .h files but without automatically
editing them as sprinkling gfp.h and slab.h inclusions around .h
files could easily lead to inclusion dependency hell. Most gfp.h
inclusion directives were ignored as stuff from gfp.h was usually
wildly available and often used in preprocessor macros. Each
slab.h inclusion directive was examined and added manually as
necessary.
6. percpu.h was updated not to include slab.h.
7. Build test were done on the following configurations and failures
were fixed. CONFIG_GCOV_KERNEL was turned off for all tests (as my
distributed build env didn't work with gcov compiles) and a few
more options had to be turned off depending on archs to make things
build (like ipr on powerpc/64 which failed due to missing writeq).
* x86 and x86_64 UP and SMP allmodconfig and a custom test config.
* powerpc and powerpc64 SMP allmodconfig
* sparc and sparc64 SMP allmodconfig
* ia64 SMP allmodconfig
* s390 SMP allmodconfig
* alpha SMP allmodconfig
* um on x86_64 SMP allmodconfig
8. percpu.h modifications were reverted so that it could be applied as
a separate patch and serve as bisection point.
Given the fact that I had only a couple of failures from tests on step
6, I'm fairly confident about the coverage of this conversion patch.
If there is a breakage, it's likely to be something in one of the arch
headers which should be easily discoverable easily on most builds of
the specific arch.
Signed-off-by: Tejun Heo <tj@kernel.org>
Guess-its-ok-by: Christoph Lameter <cl@linux-foundation.org>
Cc: Ingo Molnar <mingo@redhat.com>
Cc: Lee Schermerhorn <Lee.Schermerhorn@hp.com>
2010-03-24 02:04:11 -06:00
|
|
|
#include <linux/slab.h>
|
2008-09-13 10:58:51 -06:00
|
|
|
#include <linux/gpio.h>
|
|
|
|
#include <linux/delay.h>
|
|
|
|
#include <linux/lcd.h>
|
|
|
|
#include <linux/fb.h>
|
|
|
|
|
|
|
|
#include <asm/mach/sharpsl_param.h>
|
|
|
|
|
|
|
|
#include <mach/tosa.h>
|
|
|
|
|
|
|
|
#define POWER_IS_ON(pwr) ((pwr) <= FB_BLANK_NORMAL)
|
|
|
|
|
|
|
|
#define TG_REG0_VQV 0x0001
|
|
|
|
#define TG_REG0_COLOR 0x0002
|
|
|
|
#define TG_REG0_UD 0x0004
|
|
|
|
#define TG_REG0_LR 0x0008
|
|
|
|
|
|
|
|
#define DAC_BASE 0x4e
|
|
|
|
|
|
|
|
struct tosa_lcd_data {
|
|
|
|
struct spi_device *spi;
|
|
|
|
struct lcd_device *lcd;
|
|
|
|
struct i2c_client *i2c;
|
|
|
|
|
|
|
|
int lcd_power;
|
2008-12-04 09:54:42 -07:00
|
|
|
bool is_vga;
|
2008-09-13 10:58:51 -06:00
|
|
|
};
|
|
|
|
|
|
|
|
static int tosa_tg_send(struct spi_device *spi, int adrs, uint8_t data)
|
|
|
|
{
|
|
|
|
u8 buf[1];
|
|
|
|
struct spi_message msg;
|
|
|
|
struct spi_transfer xfer = {
|
|
|
|
.len = 1,
|
|
|
|
.cs_change = 1,
|
|
|
|
.tx_buf = buf,
|
|
|
|
};
|
|
|
|
|
|
|
|
buf[0] = ((adrs & 0x07) << 5) | (data & 0x1f);
|
|
|
|
spi_message_init(&msg);
|
|
|
|
spi_message_add_tail(&xfer, &msg);
|
|
|
|
|
|
|
|
return spi_sync(spi, &msg);
|
|
|
|
}
|
|
|
|
|
|
|
|
int tosa_bl_enable(struct spi_device *spi, int enable)
|
|
|
|
{
|
|
|
|
/* bl_enable GP04=1 otherwise GP04=0*/
|
2012-12-17 17:00:36 -07:00
|
|
|
return tosa_tg_send(spi, TG_GPODR2, enable ? 0x01 : 0x00);
|
2008-09-13 10:58:51 -06:00
|
|
|
}
|
|
|
|
EXPORT_SYMBOL(tosa_bl_enable);
|
|
|
|
|
|
|
|
static void tosa_lcd_tg_init(struct tosa_lcd_data *data)
|
|
|
|
{
|
|
|
|
/* TG on */
|
|
|
|
gpio_set_value(TOSA_GPIO_TG_ON, 0);
|
|
|
|
|
|
|
|
mdelay(60);
|
|
|
|
|
|
|
|
/* delayed 0clk TCTL signal for VGA */
|
|
|
|
tosa_tg_send(data->spi, TG_TPOSCTL, 0x00);
|
|
|
|
/* GPOS0=powercontrol, GPOS1=GPIO, GPOS2=TCTL */
|
|
|
|
tosa_tg_send(data->spi, TG_GPOSR, 0x02);
|
|
|
|
}
|
|
|
|
|
|
|
|
static void tosa_lcd_tg_on(struct tosa_lcd_data *data)
|
|
|
|
{
|
|
|
|
struct spi_device *spi = data->spi;
|
2008-12-04 09:54:42 -07:00
|
|
|
int value = TG_REG0_COLOR | TG_REG0_UD | TG_REG0_LR;
|
|
|
|
|
|
|
|
if (data->is_vga)
|
|
|
|
value |= TG_REG0_VQV;
|
|
|
|
|
|
|
|
tosa_tg_send(spi, TG_PNLCTL, value);
|
2008-09-13 10:58:51 -06:00
|
|
|
|
|
|
|
/* TG LCD pannel power up */
|
2012-12-17 17:00:36 -07:00
|
|
|
tosa_tg_send(spi, TG_PINICTL, 0x4);
|
2008-09-13 10:58:51 -06:00
|
|
|
mdelay(50);
|
|
|
|
|
|
|
|
/* TG LCD GVSS */
|
2012-12-17 17:00:36 -07:00
|
|
|
tosa_tg_send(spi, TG_PINICTL, 0x0);
|
2008-09-13 10:58:51 -06:00
|
|
|
|
|
|
|
if (!data->i2c) {
|
2012-12-17 17:00:36 -07:00
|
|
|
/*
|
|
|
|
* after the pannel is powered up the first time,
|
|
|
|
* we can access the i2c bus so probe for the DAC
|
|
|
|
*/
|
2008-09-13 10:58:51 -06:00
|
|
|
struct i2c_adapter *adap = i2c_get_adapter(0);
|
|
|
|
struct i2c_board_info info = {
|
|
|
|
.type = "tosa-bl",
|
|
|
|
.addr = DAC_BASE,
|
|
|
|
.platform_data = data->spi,
|
|
|
|
};
|
|
|
|
data->i2c = i2c_new_device(adap, &info);
|
|
|
|
}
|
|
|
|
}
|
|
|
|
|
|
|
|
static void tosa_lcd_tg_off(struct tosa_lcd_data *data)
|
|
|
|
{
|
|
|
|
struct spi_device *spi = data->spi;
|
|
|
|
|
|
|
|
/* TG LCD VHSA off */
|
2012-12-17 17:00:36 -07:00
|
|
|
tosa_tg_send(spi, TG_PINICTL, 0x4);
|
2008-09-13 10:58:51 -06:00
|
|
|
mdelay(50);
|
|
|
|
|
|
|
|
/* TG LCD signal off */
|
2012-12-17 17:00:36 -07:00
|
|
|
tosa_tg_send(spi, TG_PINICTL, 0x6);
|
2008-09-13 10:58:51 -06:00
|
|
|
mdelay(50);
|
|
|
|
|
|
|
|
/* TG Off */
|
|
|
|
gpio_set_value(TOSA_GPIO_TG_ON, 1);
|
|
|
|
mdelay(100);
|
|
|
|
}
|
|
|
|
|
|
|
|
int tosa_lcd_set_power(struct lcd_device *lcd, int power)
|
|
|
|
{
|
|
|
|
struct tosa_lcd_data *data = lcd_get_data(lcd);
|
|
|
|
|
|
|
|
if (POWER_IS_ON(power) && !POWER_IS_ON(data->lcd_power))
|
|
|
|
tosa_lcd_tg_on(data);
|
|
|
|
|
|
|
|
if (!POWER_IS_ON(power) && POWER_IS_ON(data->lcd_power))
|
|
|
|
tosa_lcd_tg_off(data);
|
|
|
|
|
|
|
|
data->lcd_power = power;
|
|
|
|
return 0;
|
|
|
|
}
|
|
|
|
|
|
|
|
static int tosa_lcd_get_power(struct lcd_device *lcd)
|
|
|
|
{
|
|
|
|
struct tosa_lcd_data *data = lcd_get_data(lcd);
|
|
|
|
|
|
|
|
return data->lcd_power;
|
|
|
|
}
|
|
|
|
|
2008-12-04 09:54:42 -07:00
|
|
|
static int tosa_lcd_set_mode(struct lcd_device *lcd, struct fb_videomode *mode)
|
|
|
|
{
|
|
|
|
struct tosa_lcd_data *data = lcd_get_data(lcd);
|
|
|
|
|
|
|
|
if (mode->xres == 320 || mode->yres == 320)
|
|
|
|
data->is_vga = false;
|
|
|
|
else
|
|
|
|
data->is_vga = true;
|
|
|
|
|
|
|
|
if (POWER_IS_ON(data->lcd_power))
|
|
|
|
tosa_lcd_tg_on(data);
|
|
|
|
|
|
|
|
return 0;
|
|
|
|
}
|
|
|
|
|
2008-09-13 10:58:51 -06:00
|
|
|
static struct lcd_ops tosa_lcd_ops = {
|
|
|
|
.set_power = tosa_lcd_set_power,
|
|
|
|
.get_power = tosa_lcd_get_power,
|
2008-12-04 09:54:42 -07:00
|
|
|
.set_mode = tosa_lcd_set_mode,
|
2008-09-13 10:58:51 -06:00
|
|
|
};
|
|
|
|
|
2012-11-19 11:21:46 -07:00
|
|
|
static int tosa_lcd_probe(struct spi_device *spi)
|
2008-09-13 10:58:51 -06:00
|
|
|
{
|
|
|
|
int ret;
|
|
|
|
struct tosa_lcd_data *data;
|
|
|
|
|
2012-05-29 16:07:25 -06:00
|
|
|
data = devm_kzalloc(&spi->dev, sizeof(struct tosa_lcd_data),
|
|
|
|
GFP_KERNEL);
|
2008-09-13 10:58:51 -06:00
|
|
|
if (!data)
|
|
|
|
return -ENOMEM;
|
|
|
|
|
tree-wide: fix assorted typos all over the place
That is "success", "unknown", "through", "performance", "[re|un]mapping"
, "access", "default", "reasonable", "[con]currently", "temperature"
, "channel", "[un]used", "application", "example","hierarchy", "therefore"
, "[over|under]flow", "contiguous", "threshold", "enough" and others.
Signed-off-by: André Goddard Rosa <andre.goddard@gmail.com>
Signed-off-by: Jiri Kosina <jkosina@suse.cz>
2009-11-14 08:09:05 -07:00
|
|
|
data->is_vga = true; /* default to VGA mode */
|
2008-12-04 09:54:42 -07:00
|
|
|
|
2008-09-13 10:58:51 -06:00
|
|
|
/*
|
|
|
|
* bits_per_word cannot be configured in platform data
|
|
|
|
*/
|
|
|
|
spi->bits_per_word = 8;
|
|
|
|
|
|
|
|
ret = spi_setup(spi);
|
|
|
|
if (ret < 0)
|
2012-05-29 16:07:25 -06:00
|
|
|
return ret;
|
2008-09-13 10:58:51 -06:00
|
|
|
|
|
|
|
data->spi = spi;
|
2013-02-21 17:43:41 -07:00
|
|
|
spi_set_drvdata(spi, data);
|
2008-09-13 10:58:51 -06:00
|
|
|
|
2012-12-17 17:00:41 -07:00
|
|
|
ret = devm_gpio_request_one(&spi->dev, TOSA_GPIO_TG_ON,
|
|
|
|
GPIOF_OUT_INIT_LOW, "tg #pwr");
|
2008-09-13 10:58:51 -06:00
|
|
|
if (ret < 0)
|
|
|
|
goto err_gpio_tg;
|
|
|
|
|
|
|
|
mdelay(60);
|
|
|
|
|
|
|
|
tosa_lcd_tg_init(data);
|
|
|
|
|
|
|
|
tosa_lcd_tg_on(data);
|
|
|
|
|
|
|
|
data->lcd = lcd_device_register("tosa-lcd", &spi->dev, data,
|
|
|
|
&tosa_lcd_ops);
|
|
|
|
|
|
|
|
if (IS_ERR(data->lcd)) {
|
|
|
|
ret = PTR_ERR(data->lcd);
|
|
|
|
data->lcd = NULL;
|
|
|
|
goto err_register;
|
|
|
|
}
|
|
|
|
|
|
|
|
return 0;
|
|
|
|
|
|
|
|
err_register:
|
|
|
|
tosa_lcd_tg_off(data);
|
|
|
|
err_gpio_tg:
|
2013-02-21 17:43:41 -07:00
|
|
|
spi_set_drvdata(spi, NULL);
|
2008-09-13 10:58:51 -06:00
|
|
|
return ret;
|
|
|
|
}
|
|
|
|
|
2012-11-19 11:26:34 -07:00
|
|
|
static int tosa_lcd_remove(struct spi_device *spi)
|
2008-09-13 10:58:51 -06:00
|
|
|
{
|
2013-02-21 17:43:41 -07:00
|
|
|
struct tosa_lcd_data *data = spi_get_drvdata(spi);
|
2008-09-13 10:58:51 -06:00
|
|
|
|
|
|
|
lcd_device_unregister(data->lcd);
|
|
|
|
|
|
|
|
if (data->i2c)
|
|
|
|
i2c_unregister_device(data->i2c);
|
|
|
|
|
|
|
|
tosa_lcd_tg_off(data);
|
|
|
|
|
2013-02-21 17:43:41 -07:00
|
|
|
spi_set_drvdata(spi, NULL);
|
2008-09-13 10:58:51 -06:00
|
|
|
|
|
|
|
return 0;
|
|
|
|
}
|
|
|
|
|
2013-04-29 17:18:00 -06:00
|
|
|
#ifdef CONFIG_PM_SLEEP
|
|
|
|
static int tosa_lcd_suspend(struct device *dev)
|
2008-09-13 10:58:51 -06:00
|
|
|
{
|
2013-04-29 17:18:00 -06:00
|
|
|
struct tosa_lcd_data *data = dev_get_drvdata(dev);
|
2008-09-13 10:58:51 -06:00
|
|
|
|
|
|
|
tosa_lcd_tg_off(data);
|
|
|
|
|
|
|
|
return 0;
|
|
|
|
}
|
|
|
|
|
2013-04-29 17:18:00 -06:00
|
|
|
static int tosa_lcd_resume(struct device *dev)
|
2008-09-13 10:58:51 -06:00
|
|
|
{
|
2013-04-29 17:18:00 -06:00
|
|
|
struct tosa_lcd_data *data = dev_get_drvdata(dev);
|
2008-09-13 10:58:51 -06:00
|
|
|
|
|
|
|
tosa_lcd_tg_init(data);
|
|
|
|
if (POWER_IS_ON(data->lcd_power))
|
|
|
|
tosa_lcd_tg_on(data);
|
|
|
|
else
|
|
|
|
tosa_lcd_tg_off(data);
|
|
|
|
|
|
|
|
return 0;
|
|
|
|
}
|
|
|
|
#endif
|
|
|
|
|
2013-04-29 17:18:00 -06:00
|
|
|
static SIMPLE_DEV_PM_OPS(tosa_lcd_pm_ops, tosa_lcd_suspend, tosa_lcd_resume);
|
|
|
|
|
2008-09-13 10:58:51 -06:00
|
|
|
static struct spi_driver tosa_lcd_driver = {
|
|
|
|
.driver = {
|
|
|
|
.name = "tosa-lcd",
|
|
|
|
.owner = THIS_MODULE,
|
2013-04-29 17:18:00 -06:00
|
|
|
.pm = &tosa_lcd_pm_ops,
|
2008-09-13 10:58:51 -06:00
|
|
|
},
|
|
|
|
.probe = tosa_lcd_probe,
|
2012-11-19 11:21:09 -07:00
|
|
|
.remove = tosa_lcd_remove,
|
2008-09-13 10:58:51 -06:00
|
|
|
};
|
|
|
|
|
2012-03-23 16:01:59 -06:00
|
|
|
module_spi_driver(tosa_lcd_driver);
|
2008-09-13 10:58:51 -06:00
|
|
|
|
|
|
|
MODULE_AUTHOR("Dmitry Baryshkov");
|
|
|
|
MODULE_LICENSE("GPL v2");
|
|
|
|
MODULE_DESCRIPTION("LCD/Backlight control for Sharp SL-6000 PDA");
|
2009-09-22 17:46:08 -06:00
|
|
|
MODULE_ALIAS("spi:tosa-lcd");
|