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linux/arch/arm/mach-pxa/palmtc.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

540 lines
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// SPDX-License-Identifier: GPL-2.0-only
/*
* linux/arch/arm/mach-pxa/palmtc.c
*
* Support for the Palm Tungsten|C
*
* Author: Marek Vasut <marek.vasut@gmail.com>
*
* Based on work of:
* Petr Blaha <p3t3@centrum.cz>
* Chetan S. Kumar <shivakumar.chetan@gmail.com>
*/
#include <linux/platform_device.h>
#include <linux/delay.h>
#include <linux/irq.h>
#include <linux/input.h>
#include <linux/pwm.h>
#include <linux/pwm_backlight.h>
#include <linux/gpio/machine.h>
#include <linux/input/matrix_keypad.h>
#include <linux/ucb1400.h>
#include <linux/power_supply.h>
#include <linux/gpio_keys.h>
#include <linux/mtd/physmap.h>
#include <asm/mach-types.h>
#include <asm/mach/arch.h>
#include <asm/mach/map.h>
#include "pxa25x.h"
#include <mach/audio.h>
#include <mach/palmtc.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 "generic.h"
#include "devices.h"
/******************************************************************************
* Pin configuration
******************************************************************************/
static unsigned long palmtc_pin_config[] __initdata = {
/* MMC */
GPIO6_MMC_CLK,
GPIO8_MMC_CS0,
GPIO12_GPIO, /* detect */
GPIO32_GPIO, /* power */
GPIO54_GPIO, /* r/o switch */
/* PCMCIA */
GPIO52_nPCE_1,
GPIO53_nPCE_2,
GPIO50_nPIOR,
GPIO51_nPIOW,
GPIO49_nPWE,
GPIO48_nPOE,
GPIO52_nPCE_1,
GPIO53_nPCE_2,
GPIO57_nIOIS16,
GPIO56_nPWAIT,
/* AC97 */
GPIO28_AC97_BITCLK,
GPIO29_AC97_SDATA_IN_0,
GPIO30_AC97_SDATA_OUT,
GPIO31_AC97_SYNC,
/* IrDA */
GPIO45_GPIO, /* ir disable */
GPIO46_FICP_RXD,
GPIO47_FICP_TXD,
/* PWM */
GPIO17_PWM1_OUT,
/* USB */
GPIO4_GPIO, /* detect */
GPIO36_GPIO, /* pullup */
/* LCD */
GPIOxx_LCD_TFT_16BPP,
/* MATRIX KEYPAD */
GPIO0_GPIO | WAKEUP_ON_EDGE_BOTH, /* in 0 */
GPIO9_GPIO | WAKEUP_ON_EDGE_BOTH, /* in 1 */
GPIO10_GPIO | WAKEUP_ON_EDGE_BOTH, /* in 2 */
GPIO11_GPIO | WAKEUP_ON_EDGE_BOTH, /* in 3 */
GPIO18_GPIO | MFP_LPM_DRIVE_LOW, /* out 0 */
GPIO19_GPIO | MFP_LPM_DRIVE_LOW, /* out 1 */
GPIO20_GPIO | MFP_LPM_DRIVE_LOW, /* out 2 */
GPIO21_GPIO | MFP_LPM_DRIVE_LOW, /* out 3 */
GPIO22_GPIO | MFP_LPM_DRIVE_LOW, /* out 4 */
GPIO23_GPIO | MFP_LPM_DRIVE_LOW, /* out 5 */
GPIO24_GPIO | MFP_LPM_DRIVE_LOW, /* out 6 */
GPIO25_GPIO | MFP_LPM_DRIVE_LOW, /* out 7 */
GPIO26_GPIO | MFP_LPM_DRIVE_LOW, /* out 8 */
GPIO27_GPIO | MFP_LPM_DRIVE_LOW, /* out 9 */
GPIO79_GPIO | MFP_LPM_DRIVE_LOW, /* out 10 */
GPIO80_GPIO | MFP_LPM_DRIVE_LOW, /* out 11 */
/* PXA GPIO KEYS */
GPIO7_GPIO | WAKEUP_ON_EDGE_BOTH, /* hotsync button on cradle */
/* MISC */
GPIO1_RST, /* reset */
GPIO2_GPIO, /* earphone detect */
GPIO16_GPIO, /* backlight switch */
};
/******************************************************************************
* SD/MMC card controller
******************************************************************************/
#if defined(CONFIG_MMC_PXA) || defined(CONFIG_MMC_PXA_MODULE)
static struct pxamci_platform_data palmtc_mci_platform_data = {
.ocr_mask = MMC_VDD_32_33 | MMC_VDD_33_34,
.detect_delay_ms = 200,
};
static struct gpiod_lookup_table palmtc_mci_gpio_table = {
.dev_id = "pxa2xx-mci.0",
.table = {
GPIO_LOOKUP("gpio-pxa", GPIO_NR_PALMTC_SD_DETECT_N,
"cd", GPIO_ACTIVE_LOW),
GPIO_LOOKUP("gpio-pxa", GPIO_NR_PALMTC_SD_READONLY,
"wp", GPIO_ACTIVE_LOW),
GPIO_LOOKUP("gpio-pxa", GPIO_NR_PALMTC_SD_POWER,
"power", GPIO_ACTIVE_HIGH),
{ },
},
};
static void __init palmtc_mmc_init(void)
{
gpiod_add_lookup_table(&palmtc_mci_gpio_table);
pxa_set_mci_info(&palmtc_mci_platform_data);
}
#else
static inline void palmtc_mmc_init(void) {}
#endif
/******************************************************************************
* GPIO keys
******************************************************************************/
#if defined(CONFIG_KEYBOARD_GPIO) || defined(CONFIG_KEYBOARD_GPIO_MODULE)
static struct gpio_keys_button palmtc_pxa_buttons[] = {
{KEY_F8, GPIO_NR_PALMTC_HOTSYNC_BUTTON, 1, "HotSync Button", EV_KEY, 1},
};
static struct gpio_keys_platform_data palmtc_pxa_keys_data = {
.buttons = palmtc_pxa_buttons,
.nbuttons = ARRAY_SIZE(palmtc_pxa_buttons),
};
static struct platform_device palmtc_pxa_keys = {
.name = "gpio-keys",
.id = -1,
.dev = {
.platform_data = &palmtc_pxa_keys_data,
},
};
static void __init palmtc_keys_init(void)
{
platform_device_register(&palmtc_pxa_keys);
}
#else
static inline void palmtc_keys_init(void) {}
#endif
/******************************************************************************
* Backlight
******************************************************************************/
#if defined(CONFIG_BACKLIGHT_PWM) || defined(CONFIG_BACKLIGHT_PWM_MODULE)
static struct gpiod_lookup_table palmtc_pwm_bl_gpio_table = {
.dev_id = "pwm-backlight.0",
.table = {
GPIO_LOOKUP("gpio-pxa", GPIO_NR_PALMTC_BL_POWER,
"enable", GPIO_ACTIVE_HIGH),
},
};
static struct pwm_lookup palmtc_pwm_lookup[] = {
PWM_LOOKUP("pxa25x-pwm.1", 0, "pwm-backlight.0", NULL, PALMTC_PERIOD_NS,
PWM_POLARITY_NORMAL),
};
static struct platform_pwm_backlight_data palmtc_backlight_data = {
.max_brightness = PALMTC_MAX_INTENSITY,
.dft_brightness = PALMTC_MAX_INTENSITY,
};
static struct platform_device palmtc_backlight = {
.name = "pwm-backlight",
.dev = {
.parent = &pxa25x_device_pwm1.dev,
.platform_data = &palmtc_backlight_data,
},
};
static void __init palmtc_pwm_init(void)
{
gpiod_add_lookup_table(&palmtc_pwm_bl_gpio_table);
pwm_add_table(palmtc_pwm_lookup, ARRAY_SIZE(palmtc_pwm_lookup));
platform_device_register(&palmtc_backlight);
}
#else
static inline void palmtc_pwm_init(void) {}
#endif
/******************************************************************************
* IrDA
******************************************************************************/
#if defined(CONFIG_IRDA) || defined(CONFIG_IRDA_MODULE)
static struct pxaficp_platform_data palmtc_ficp_platform_data = {
.gpio_pwdown = GPIO_NR_PALMTC_IR_DISABLE,
.transceiver_cap = IR_SIRMODE | IR_OFF,
};
static void __init palmtc_irda_init(void)
{
pxa_set_ficp_info(&palmtc_ficp_platform_data);
}
#else
static inline void palmtc_irda_init(void) {}
#endif
/******************************************************************************
* Keyboard
******************************************************************************/
#if defined(CONFIG_KEYBOARD_MATRIX) || defined(CONFIG_KEYBOARD_MATRIX_MODULE)
static const uint32_t palmtc_matrix_keys[] = {
KEY(0, 0, KEY_F1),
KEY(0, 1, KEY_X),
KEY(0, 2, KEY_POWER),
KEY(0, 3, KEY_TAB),
KEY(0, 4, KEY_A),
KEY(0, 5, KEY_Q),
KEY(0, 6, KEY_LEFTSHIFT),
KEY(0, 7, KEY_Z),
KEY(0, 8, KEY_S),
KEY(0, 9, KEY_W),
KEY(0, 10, KEY_E),
KEY(0, 11, KEY_UP),
KEY(1, 0, KEY_F2),
KEY(1, 1, KEY_DOWN),
KEY(1, 3, KEY_D),
KEY(1, 4, KEY_C),
KEY(1, 5, KEY_F),
KEY(1, 6, KEY_R),
KEY(1, 7, KEY_SPACE),
KEY(1, 8, KEY_V),
KEY(1, 9, KEY_G),
KEY(1, 10, KEY_T),
KEY(1, 11, KEY_LEFT),
KEY(2, 0, KEY_F3),
KEY(2, 1, KEY_LEFTCTRL),
KEY(2, 3, KEY_H),
KEY(2, 4, KEY_Y),
KEY(2, 5, KEY_N),
KEY(2, 6, KEY_J),
KEY(2, 7, KEY_U),
KEY(2, 8, KEY_M),
KEY(2, 9, KEY_K),
KEY(2, 10, KEY_I),
KEY(2, 11, KEY_RIGHT),
KEY(3, 0, KEY_F4),
KEY(3, 1, KEY_ENTER),
KEY(3, 3, KEY_DOT),
KEY(3, 4, KEY_L),
KEY(3, 5, KEY_O),
KEY(3, 6, KEY_LEFTALT),
KEY(3, 7, KEY_ENTER),
KEY(3, 8, KEY_BACKSPACE),
KEY(3, 9, KEY_P),
KEY(3, 10, KEY_B),
KEY(3, 11, KEY_FN),
};
const struct matrix_keymap_data palmtc_keymap_data = {
.keymap = palmtc_matrix_keys,
.keymap_size = ARRAY_SIZE(palmtc_matrix_keys),
};
static const unsigned int palmtc_keypad_row_gpios[] = {
0, 9, 10, 11
};
static const unsigned int palmtc_keypad_col_gpios[] = {
18, 19, 20, 21, 22, 23, 24, 25, 26, 27, 79, 80
};
static struct matrix_keypad_platform_data palmtc_keypad_platform_data = {
.keymap_data = &palmtc_keymap_data,
.row_gpios = palmtc_keypad_row_gpios,
.num_row_gpios = ARRAY_SIZE(palmtc_keypad_row_gpios),
.col_gpios = palmtc_keypad_col_gpios,
.num_col_gpios = ARRAY_SIZE(palmtc_keypad_col_gpios),
.active_low = 1,
.debounce_ms = 20,
.col_scan_delay_us = 5,
};
static struct platform_device palmtc_keyboard = {
.name = "matrix-keypad",
.id = -1,
.dev = {
.platform_data = &palmtc_keypad_platform_data,
},
};
static void __init palmtc_mkp_init(void)
{
platform_device_register(&palmtc_keyboard);
}
#else
static inline void palmtc_mkp_init(void) {}
#endif
/******************************************************************************
* UDC
******************************************************************************/
#if defined(CONFIG_USB_PXA25X)||defined(CONFIG_USB_PXA25X_MODULE)
static struct gpiod_lookup_table palmtc_udc_gpiod_table = {
.dev_id = "gpio-vbus",
.table = {
GPIO_LOOKUP("gpio-pxa", GPIO_NR_PALMTC_USB_DETECT_N,
"vbus", GPIO_ACTIVE_LOW),
GPIO_LOOKUP("gpio-pxa", GPIO_NR_PALMTC_USB_POWER,
"pullup", GPIO_ACTIVE_HIGH),
{ },
},
};
static struct platform_device palmtc_gpio_vbus = {
.name = "gpio-vbus",
.id = -1,
};
static void __init palmtc_udc_init(void)
{
gpiod_add_lookup_table(&palmtc_udc_gpiod_table);
platform_device_register(&palmtc_gpio_vbus);
};
#else
static inline void palmtc_udc_init(void) {}
#endif
/******************************************************************************
* Touchscreen / Battery / GPIO-extender
******************************************************************************/
#if defined(CONFIG_TOUCHSCREEN_UCB1400) || \
defined(CONFIG_TOUCHSCREEN_UCB1400_MODULE)
static struct platform_device palmtc_ucb1400_device = {
.name = "ucb1400_core",
.id = -1,
};
static void __init palmtc_ts_init(void)
{
pxa_set_ac97_info(NULL);
platform_device_register(&palmtc_ucb1400_device);
}
#else
static inline void palmtc_ts_init(void) {}
#endif
/******************************************************************************
* LEDs
******************************************************************************/
#if defined(CONFIG_LEDS_GPIO) || defined(CONFIG_LEDS_GPIO_MODULE)
struct gpio_led palmtc_gpio_leds[] = {
{
.name = "palmtc:green:user",
.default_trigger = "none",
.gpio = GPIO_NR_PALMTC_LED_POWER,
.active_low = 1,
}, {
.name = "palmtc:vibra:vibra",
.default_trigger = "none",
.gpio = GPIO_NR_PALMTC_VIBRA_POWER,
.active_low = 1,
}
};
static struct gpio_led_platform_data palmtc_gpio_led_info = {
.leds = palmtc_gpio_leds,
.num_leds = ARRAY_SIZE(palmtc_gpio_leds),
};
static struct platform_device palmtc_leds = {
.name = "leds-gpio",
.id = -1,
.dev = {
.platform_data = &palmtc_gpio_led_info,
}
};
static void __init palmtc_leds_init(void)
{
platform_device_register(&palmtc_leds);
}
#else
static inline void palmtc_leds_init(void) {}
#endif
/******************************************************************************
* NOR Flash
******************************************************************************/
#if defined(CONFIG_MTD_PHYSMAP) || defined(CONFIG_MTD_PHYSMAP_MODULE)
static struct resource palmtc_flash_resource = {
.start = PXA_CS0_PHYS,
.end = PXA_CS0_PHYS + SZ_16M - 1,
.flags = IORESOURCE_MEM,
};
static struct mtd_partition palmtc_flash_parts[] = {
{
.name = "U-Boot Bootloader",
.offset = 0x0,
.size = 0x40000,
},
{
.name = "Linux Kernel",
.offset = 0x40000,
.size = 0x2c0000,
},
{
.name = "Filesystem",
.offset = 0x300000,
.size = 0xcc0000,
},
{
.name = "U-Boot Environment",
.offset = 0xfc0000,
.size = MTDPART_SIZ_FULL,
},
};
static struct physmap_flash_data palmtc_flash_data = {
.width = 4,
.parts = palmtc_flash_parts,
.nr_parts = ARRAY_SIZE(palmtc_flash_parts),
};
static struct platform_device palmtc_flash = {
.name = "physmap-flash",
.id = -1,
.resource = &palmtc_flash_resource,
.num_resources = 1,
.dev = {
.platform_data = &palmtc_flash_data,
},
};
static void __init palmtc_nor_init(void)
{
platform_device_register(&palmtc_flash);
}
#else
static inline void palmtc_nor_init(void) {}
#endif
/******************************************************************************
* Framebuffer
******************************************************************************/
#if defined(CONFIG_FB_PXA) || defined(CONFIG_FB_PXA_MODULE)
static struct pxafb_mode_info palmtc_lcd_modes[] = {
{
.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,
},
};
static struct pxafb_mach_info palmtc_lcd_screen = {
.modes = palmtc_lcd_modes,
.num_modes = ARRAY_SIZE(palmtc_lcd_modes),
.lcd_conn = LCD_COLOR_TFT_16BPP | LCD_PCLK_EDGE_FALL,
};
static void __init palmtc_lcd_init(void)
{
pxa_set_fb_info(NULL, &palmtc_lcd_screen);
}
#else
static inline void palmtc_lcd_init(void) {}
#endif
/******************************************************************************
* Machine init
******************************************************************************/
static void __init palmtc_init(void)
{
pxa2xx_mfp_config(ARRAY_AND_SIZE(palmtc_pin_config));
pxa_set_ffuart_info(NULL);
pxa_set_btuart_info(NULL);
pxa_set_stuart_info(NULL);
pxa_set_hwuart_info(NULL);
palmtc_mmc_init();
palmtc_keys_init();
palmtc_pwm_init();
palmtc_irda_init();
palmtc_mkp_init();
palmtc_udc_init();
palmtc_ts_init();
palmtc_nor_init();
palmtc_lcd_init();
palmtc_leds_init();
};
MACHINE_START(PALMTC, "Palm Tungsten|C")
.atag_offset = 0x100,
.map_io = pxa25x_map_io,
.nr_irqs = PXA_NR_IRQS,
.init_irq = pxa25x_init_irq,
.handle_irq = pxa25x_handle_irq,
.init_time = pxa_timer_init,
.init_machine = palmtc_init,
.restart = pxa_restart,
MACHINE_END
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