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kernel-ark/arch/arm/mach-pxa/palmtc.c
Thierry Reding bfcb311744 ARM: pxa: palmtc: 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 23:06:50 +02:00

521 lines
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/*
* 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>
*
* 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/input.h>
#include <linux/pwm.h>
#include <linux/pwm_backlight.h>
#include <linux/gpio.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 <linux/usb/gpio_vbus.h>
#include <asm/mach-types.h>
#include <asm/mach/arch.h>
#include <asm/mach/map.h>
#include <mach/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 <mach/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,
.gpio_power = GPIO_NR_PALMTC_SD_POWER,
.gpio_card_ro = GPIO_NR_PALMTC_SD_READONLY,
.gpio_card_detect = GPIO_NR_PALMTC_SD_DETECT_N,
.detect_delay_ms = 200,
};
static void __init palmtc_mmc_init(void)
{
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 pwm_lookup palmtc_pwm_lookup[] = {
PWM_LOOKUP("pxa25x-pwm.1", 0, "pwm-backlight.0", NULL, PALMTC_PERIOD_NS,
PWM_PERIOD_NORMAL),
};
static struct platform_pwm_backlight_data palmtc_backlight_data = {
.max_brightness = PALMTC_MAX_INTENSITY,
.dft_brightness = PALMTC_MAX_INTENSITY,
.enable_gpio = GPIO_NR_PALMTC_BL_POWER,
};
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)
{
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 gpio_vbus_mach_info palmtc_udc_info = {
.gpio_vbus = GPIO_NR_PALMTC_USB_DETECT_N,
.gpio_vbus_inverted = 1,
.gpio_pullup = GPIO_NR_PALMTC_USB_POWER,
};
static struct platform_device palmtc_gpio_vbus = {
.name = "gpio-vbus",
.id = -1,
.dev = {
.platform_data = &palmtc_udc_info,
},
};
static void __init palmtc_udc_init(void)
{
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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