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linux_dsm_epyc7002/arch/arm/mach-pxa/palm27x.c
Linus Walleij 2644f912b4 backlight: pwm_bl: Switch to full GPIO descriptor 
The PWM backlight still supports passing a enable GPIO line as
platform data using the legacy <linux/gpio.h> API.

It turns out that ever board using this mechanism except one
is pass .enable_gpio = -1. So we drop all these cargo-culted -1's
from all instances of this platform data in the kernel.

The remaning board, Palm TC, is converted to pass a machine
descriptior table with the "enable" GPIO instead, and delete the
platform data entry for enable_gpio and the code handling it
and things should work smoothly with the new API.

Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
Acked-by: Robert Jarzmik <robert.jarzmik@free.fr>
Acked-by: Krzysztof Kozlowski <krzk@kernel.org
Reviewed-by: Bartosz Golaszewski <bgolaszewski@baylibre.com>
Reviewed-by: Daniel Thompson <daniel.thompson@linaro.org>
Signed-off-by: Lee Jones <lee.jones@linaro.org>
2020-03-18 15:05:57 +00:00

475 lines
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// SPDX-License-Identifier: GPL-2.0-only
/*
* Common code for Palm LD, T5, TX, Z72
*
* Copyright (C) 2010-2011 Marek Vasut <marek.vasut@gmail.com>
*/
#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/machine.h>
#include <linux/gpio.h>
#include <linux/wm97xx.h>
#include <linux/power_supply.h>
#include <linux/regulator/max1586.h>
#include <linux/platform_data/i2c-pxa.h>
#include <asm/mach-types.h>
#include <asm/mach/arch.h>
#include <asm/mach/map.h>
#include "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 "udc.h"
#include <linux/platform_data/asoc-palm27x.h>
#include "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(struct gpiod_lookup_table *gtable)
{
if (gtable)
gpiod_add_lookup_table(gtable);
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)
/* The actual GPIO offsets get filled in in the palm27x_udc_init() call */
static struct gpiod_lookup_table palm27x_udc_gpiod_table = {
.dev_id = "gpio-vbus",
.table = {
GPIO_LOOKUP("gpio-pxa", 0,
"vbus", GPIO_ACTIVE_HIGH),
GPIO_LOOKUP("gpio-pxa", 0,
"pullup", GPIO_ACTIVE_HIGH),
{ },
},
};
static struct platform_device palm27x_gpio_vbus = {
.name = "gpio-vbus",
.id = -1,
};
void __init palm27x_udc_init(int vbus, int pullup, int vbus_inverted)
{
palm27x_udc_gpiod_table.table[0].chip_hwnum = vbus;
palm27x_udc_gpiod_table.table[1].chip_hwnum = pullup;
if (vbus_inverted)
palm27x_udc_gpiod_table.table[0].flags = GPIO_ACTIVE_LOW;
gpiod_add_lookup_table(&palm27x_udc_gpiod_table);
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,
.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_table(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
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