redonkable/alistair23-linux
redonkable/alistair23-linux
1
0
Fork 0
Code Releases Activity
alistair23-linux/arch/arm/mach-pxa/palm27x.c
Thierry Reding e2d5b780aa ARM: pxa: palm27x: Use PWM lookup table 
Use a PWM lookup table to provide the PWM to the pwm-backlight device.
The driver has a legacy code path that is required only because boards
still use the legacy method of requesting PWMs by global ID. Replacing
these usages allows that legacy fallback to be removed.

Cc: Daniel Mack <daniel@zonque.org>
Cc: Haojian Zhuang <haojian.zhuang@gmail.com>
Cc: Robert Jarzmik <robert.jarzmik@free.fr>
Signed-off-by: Thierry Reding <thierry.reding@gmail.com>
Signed-off-by: Robert Jarzmik <robert.jarzmik@free.fr>
2015-10-14 23:06:47 +02:00

484 lines
12 KiB
C
Raw Blame History

/*
* Common code for Palm LD, T5, TX, Z72
*
* Copyright (C) 2010-2011 Marek Vasut <marek.vasut@gmail.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.
*
*/
#include <linux/platform_device.h>
#include <linux/delay.h>
#include <linux/irq.h>
#include <linux/gpio_keys.h>
#include <linux/input.h>
#include <linux/pda_power.h>
#include <linux/pwm.h>
#include <linux/pwm_backlight.h>
#include <linux/gpio.h>
#include <linux/wm97xx.h>
#include <linux/power_supply.h>
#include <linux/usb/gpio_vbus.h>
#include <linux/regulator/max1586.h>
#include <linux/i2c/pxa-i2c.h>
#include <asm/mach-types.h>
#include <asm/mach/arch.h>
#include <asm/mach/map.h>
#include <mach/pxa27x.h>
#include <mach/audio.h>
#include <linux/platform_data/mmc-pxamci.h>
#include <linux/platform_data/video-pxafb.h>
#include <linux/platform_data/irda-pxaficp.h>
#include <mach/udc.h>
#include <linux/platform_data/asoc-palm27x.h>
#include <mach/palm27x.h>
#include "generic.h"
#include "devices.h"
/******************************************************************************
* SD/MMC card controller
******************************************************************************/
#if defined(CONFIG_MMC_PXA) || defined(CONFIG_MMC_PXA_MODULE)
static struct pxamci_platform_data palm27x_mci_platform_data = {
.ocr_mask = MMC_VDD_32_33 | MMC_VDD_33_34,
.detect_delay_ms = 200,
};
void __init palm27x_mmc_init(int detect, int ro, int power,
int power_inverted)
{
palm27x_mci_platform_data.gpio_card_detect = detect;
palm27x_mci_platform_data.gpio_card_ro = ro;
palm27x_mci_platform_data.gpio_power = power;
palm27x_mci_platform_data.gpio_power_invert = power_inverted;
pxa_set_mci_info(&palm27x_mci_platform_data);
}
#endif
/******************************************************************************
* Power management - standby
******************************************************************************/
#if defined(CONFIG_SUSPEND)
void __init palm27x_pm_init(unsigned long str_base)
{
static const unsigned long resume[] = {
0xe3a00101, /* mov r0, #0x40000000 */
0xe380060f, /* orr r0, r0, #0x00f00000 */
0xe590f008, /* ldr pc, [r0, #0x08] */
};
/*
* Copy the bootloader.
* NOTE: PalmZ72 uses a different wakeup method!
*/
memcpy(phys_to_virt(str_base), resume, sizeof(resume));
}
#endif
/******************************************************************************
* Framebuffer
******************************************************************************/
#if defined(CONFIG_FB_PXA) || defined(CONFIG_FB_PXA_MODULE)
struct pxafb_mode_info palm_320x480_lcd_mode = {
.pixclock = 57692,
.xres = 320,
.yres = 480,
.bpp = 16,
.left_margin = 32,
.right_margin = 1,
.upper_margin = 7,
.lower_margin = 1,
.hsync_len = 4,
.vsync_len = 1,
};
struct pxafb_mode_info palm_320x320_lcd_mode = {
.pixclock = 115384,
.xres = 320,
.yres = 320,
.bpp = 16,
.left_margin = 27,
.right_margin = 7,
.upper_margin = 7,
.lower_margin = 8,
.hsync_len = 6,
.vsync_len = 1,
};
struct pxafb_mode_info palm_320x320_new_lcd_mode = {
.pixclock = 86538,
.xres = 320,
.yres = 320,
.bpp = 16,
.left_margin = 20,
.right_margin = 8,
.upper_margin = 8,
.lower_margin = 5,
.hsync_len = 4,
.vsync_len = 1,
};
static struct pxafb_mach_info palm27x_lcd_screen = {
.num_modes = 1,
.lcd_conn = LCD_COLOR_TFT_16BPP | LCD_PCLK_EDGE_FALL,
};
static int palm27x_lcd_power;
static void palm27x_lcd_ctl(int on, struct fb_var_screeninfo *info)
{
gpio_set_value(palm27x_lcd_power, on);
}
void __init palm27x_lcd_init(int power, struct pxafb_mode_info *mode)
{
palm27x_lcd_screen.modes = mode;
if (gpio_is_valid(power)) {
if (!gpio_request(power, "LCD power")) {
pr_err("Palm27x: failed to claim lcd power gpio!\n");
return;
}
if (!gpio_direction_output(power, 1)) {
pr_err("Palm27x: lcd power configuration failed!\n");
return;
}
palm27x_lcd_power = power;
palm27x_lcd_screen.pxafb_lcd_power = palm27x_lcd_ctl;
}
pxa_set_fb_info(NULL, &palm27x_lcd_screen);
}
#endif
/******************************************************************************
* USB Gadget
******************************************************************************/
#if defined(CONFIG_USB_PXA27X) || \
defined(CONFIG_USB_PXA27X_MODULE)
static struct gpio_vbus_mach_info palm27x_udc_info = {
.gpio_vbus_inverted = 1,
};
static struct platform_device palm27x_gpio_vbus = {
.name = "gpio-vbus",
.id = -1,
.dev = {
.platform_data = &palm27x_udc_info,
},
};
void __init palm27x_udc_init(int vbus, int pullup, int vbus_inverted)
{
palm27x_udc_info.gpio_vbus = vbus;
palm27x_udc_info.gpio_pullup = pullup;
palm27x_udc_info.gpio_vbus_inverted = vbus_inverted;
if (!gpio_request(pullup, "USB Pullup")) {
gpio_direction_output(pullup,
palm27x_udc_info.gpio_vbus_inverted);
gpio_free(pullup);
} else
return;
platform_device_register(&palm27x_gpio_vbus);
}
#endif
/******************************************************************************
* IrDA
******************************************************************************/
#if defined(CONFIG_IRDA) || defined(CONFIG_IRDA_MODULE)
static struct pxaficp_platform_data palm27x_ficp_platform_data = {
.transceiver_cap = IR_SIRMODE | IR_OFF,
};
void __init palm27x_irda_init(int pwdn)
{
palm27x_ficp_platform_data.gpio_pwdown = pwdn;
pxa_set_ficp_info(&palm27x_ficp_platform_data);
}
#endif
/******************************************************************************
* WM97xx audio, battery
******************************************************************************/
#if defined(CONFIG_TOUCHSCREEN_WM97XX) || \
defined(CONFIG_TOUCHSCREEN_WM97XX_MODULE)
static struct wm97xx_batt_pdata palm27x_batt_pdata = {
.batt_aux = WM97XX_AUX_ID3,
.temp_aux = WM97XX_AUX_ID2,
.charge_gpio = -1,
.batt_mult = 1000,
.batt_div = 414,
.temp_mult = 1,
.temp_div = 1,
.batt_tech = POWER_SUPPLY_TECHNOLOGY_LIPO,
.batt_name = "main-batt",
};
static struct wm97xx_pdata palm27x_wm97xx_pdata = {
.batt_pdata = &palm27x_batt_pdata,
};
static pxa2xx_audio_ops_t palm27x_ac97_pdata = {
.codec_pdata = { &palm27x_wm97xx_pdata, },
};
static struct palm27x_asoc_info palm27x_asoc_pdata = {
.jack_gpio = -1,
};
static struct platform_device palm27x_asoc = {
.name = "palm27x-asoc",
.id = -1,
.dev = {
.platform_data = &palm27x_asoc_pdata,
},
};
void __init palm27x_ac97_init(int minv, int maxv, int jack, int reset)
{
palm27x_ac97_pdata.reset_gpio = reset;
palm27x_asoc_pdata.jack_gpio = jack;
if (minv < 0 || maxv < 0) {
palm27x_ac97_pdata.codec_pdata[0] = NULL;
pxa_set_ac97_info(&palm27x_ac97_pdata);
} else {
palm27x_batt_pdata.min_voltage = minv,
palm27x_batt_pdata.max_voltage = maxv,
pxa_set_ac97_info(&palm27x_ac97_pdata);
platform_device_register(&palm27x_asoc);
}
}
#endif
/******************************************************************************
* Backlight
******************************************************************************/
#if defined(CONFIG_BACKLIGHT_PWM) || defined(CONFIG_BACKLIGHT_PWM_MODULE)
static struct pwm_lookup palm27x_pwm_lookup[] = {
PWM_LOOKUP("pxa27x-pwm.0", 0, "pwm-backlight.0", NULL, 3500 * 1024,
PWM_POLARITY_NORMAL),
};
static int palm_bl_power;
static int palm_lcd_power;
static int palm27x_backlight_init(struct device *dev)
{
int ret;
ret = gpio_request(palm_bl_power, "BL POWER");
if (ret)
goto err;
ret = gpio_direction_output(palm_bl_power, 0);
if (ret)
goto err2;
if (gpio_is_valid(palm_lcd_power)) {
ret = gpio_request(palm_lcd_power, "LCD POWER");
if (ret)
goto err2;
ret = gpio_direction_output(palm_lcd_power, 0);
if (ret)
goto err3;
}
return 0;
err3:
gpio_free(palm_lcd_power);
err2:
gpio_free(palm_bl_power);
err:
return ret;
}
static int palm27x_backlight_notify(struct device *dev, int brightness)
{
gpio_set_value(palm_bl_power, brightness);
if (gpio_is_valid(palm_lcd_power))
gpio_set_value(palm_lcd_power, brightness);
return brightness;
}
static void palm27x_backlight_exit(struct device *dev)
{
gpio_free(palm_bl_power);
if (gpio_is_valid(palm_lcd_power))
gpio_free(palm_lcd_power);
}
static struct platform_pwm_backlight_data palm27x_backlight_data = {
.max_brightness = 0xfe,
.dft_brightness = 0x7e,
.enable_gpio = -1,
.init = palm27x_backlight_init,
.notify = palm27x_backlight_notify,
.exit = palm27x_backlight_exit,
};
static struct platform_device palm27x_backlight = {
.name = "pwm-backlight",
.dev = {
.parent = &pxa27x_device_pwm0.dev,
.platform_data = &palm27x_backlight_data,
},
};
void __init palm27x_pwm_init(int bl, int lcd)
{
palm_bl_power = bl;
palm_lcd_power = lcd;
pwm_add_lookup(palm27x_pwm_lookup, ARRAY_SIZE(palm27x_pwm_lookup));
platform_device_register(&palm27x_backlight);
}
#endif
/******************************************************************************
* Power supply
******************************************************************************/
#if defined(CONFIG_PDA_POWER) || defined(CONFIG_PDA_POWER_MODULE)
static int palm_ac_state;
static int palm_usb_state;
static int palm27x_power_supply_init(struct device *dev)
{
int ret;
ret = gpio_request(palm_ac_state, "AC state");
if (ret)
goto err1;
ret = gpio_direction_input(palm_ac_state);
if (ret)
goto err2;
if (gpio_is_valid(palm_usb_state)) {
ret = gpio_request(palm_usb_state, "USB state");
if (ret)
goto err2;
ret = gpio_direction_input(palm_usb_state);
if (ret)
goto err3;
}
return 0;
err3:
gpio_free(palm_usb_state);
err2:
gpio_free(palm_ac_state);
err1:
return ret;
}
static void palm27x_power_supply_exit(struct device *dev)
{
gpio_free(palm_usb_state);
gpio_free(palm_ac_state);
}
static int palm27x_is_ac_online(void)
{
return gpio_get_value(palm_ac_state);
}
static int palm27x_is_usb_online(void)
{
return !gpio_get_value(palm_usb_state);
}
static char *palm27x_supplicants[] = {
"main-battery",
};
static struct pda_power_pdata palm27x_ps_info = {
.init = palm27x_power_supply_init,
.exit = palm27x_power_supply_exit,
.is_ac_online = palm27x_is_ac_online,
.is_usb_online = palm27x_is_usb_online,
.supplied_to = palm27x_supplicants,
.num_supplicants = ARRAY_SIZE(palm27x_supplicants),
};
static struct platform_device palm27x_power_supply = {
.name = "pda-power",
.id = -1,
.dev = {
.platform_data = &palm27x_ps_info,
},
};
void __init palm27x_power_init(int ac, int usb)
{
palm_ac_state = ac;
palm_usb_state = usb;
platform_device_register(&palm27x_power_supply);
}
#endif
/******************************************************************************
* Core power regulator
******************************************************************************/
#if defined(CONFIG_REGULATOR_MAX1586) || \
defined(CONFIG_REGULATOR_MAX1586_MODULE)
static struct regulator_consumer_supply palm27x_max1587a_consumers[] = {
REGULATOR_SUPPLY("vcc_core", NULL),
};
static struct regulator_init_data palm27x_max1587a_v3_info = {
.constraints = {
.name = "vcc_core range",
.min_uV = 900000,
.max_uV = 1705000,
.always_on = 1,
.valid_ops_mask = REGULATOR_CHANGE_VOLTAGE,
},
.consumer_supplies = palm27x_max1587a_consumers,
.num_consumer_supplies = ARRAY_SIZE(palm27x_max1587a_consumers),
};
static struct max1586_subdev_data palm27x_max1587a_subdevs[] = {
{
.name = "vcc_core",
.id = MAX1586_V3,
.platform_data = &palm27x_max1587a_v3_info,
}
};
static struct max1586_platform_data palm27x_max1587a_info = {
.subdevs = palm27x_max1587a_subdevs,
.num_subdevs = ARRAY_SIZE(palm27x_max1587a_subdevs),
.v3_gain = MAX1586_GAIN_R24_3k32, /* 730..1550 mV */
};
static struct i2c_board_info __initdata palm27x_pi2c_board_info[] = {
{
I2C_BOARD_INFO("max1586", 0x14),
.platform_data = &palm27x_max1587a_info,
},
};
static struct i2c_pxa_platform_data palm27x_i2c_power_info = {
.use_pio = 1,
};
void __init palm27x_pmic_init(void)
{
i2c_register_board_info(1, ARRAY_AND_SIZE(palm27x_pi2c_board_info));
pxa27x_set_i2c_power_info(&palm27x_i2c_power_info);
}
#endif
View git blame Copy permalink