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alistair23-linux/arch/arm/mach-pxa/tavorevb.c
Thierry Reding 5a4412d4a8 ARM: pxa: tavorevb: 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 23:06:51 +02:00

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/*
* linux/arch/arm/mach-pxa/tavorevb.c
*
* Support for the Marvell PXA930 Evaluation Board
*
* Copyright (C) 2007-2008 Marvell International Ltd.
*
* 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
* publishhed by the Free Software Foundation.
*/
#include <linux/module.h>
#include <linux/kernel.h>
#include <linux/interrupt.h>
#include <linux/init.h>
#include <linux/platform_device.h>
#include <linux/clk.h>
#include <linux/gpio.h>
#include <linux/smc91x.h>
#include <linux/pwm.h>
#include <linux/pwm_backlight.h>
#include <asm/mach-types.h>
#include <asm/mach/arch.h>
#include <mach/pxa930.h>
#include <linux/platform_data/video-pxafb.h>
#include <linux/platform_data/keypad-pxa27x.h>
#include "devices.h"
#include "generic.h"
/* Tavor EVB MFP configurations */
static mfp_cfg_t tavorevb_mfp_cfg[] __initdata = {
/* Ethernet */
DF_nCS1_nCS3,
GPIO47_GPIO,
/* LCD */
GPIO23_LCD_DD0,
GPIO24_LCD_DD1,
GPIO25_LCD_DD2,
GPIO26_LCD_DD3,
GPIO27_LCD_DD4,
GPIO28_LCD_DD5,
GPIO29_LCD_DD6,
GPIO44_LCD_DD7,
GPIO21_LCD_CS,
GPIO22_LCD_CS2,
GPIO17_LCD_FCLK_RD,
GPIO18_LCD_LCLK_A0,
GPIO19_LCD_PCLK_WR,
/* LCD Backlight */
GPIO43_PWM3, /* primary backlight */
GPIO32_PWM0, /* secondary backlight */
/* Keypad */
GPIO0_KP_MKIN_0,
GPIO2_KP_MKIN_1,
GPIO4_KP_MKIN_2,
GPIO6_KP_MKIN_3,
GPIO8_KP_MKIN_4,
GPIO10_KP_MKIN_5,
GPIO12_KP_MKIN_6,
GPIO1_KP_MKOUT_0,
GPIO3_KP_MKOUT_1,
GPIO5_KP_MKOUT_2,
GPIO7_KP_MKOUT_3,
GPIO9_KP_MKOUT_4,
GPIO11_KP_MKOUT_5,
GPIO13_KP_MKOUT_6,
GPIO14_KP_DKIN_2,
GPIO15_KP_DKIN_3,
};
#define TAVOREVB_ETH_PHYS (0x14000000)
static struct resource smc91x_resources[] = {
[0] = {
.start = (TAVOREVB_ETH_PHYS + 0x300),
.end = (TAVOREVB_ETH_PHYS + 0xfffff),
.flags = IORESOURCE_MEM,
},
[1] = {
.start = PXA_GPIO_TO_IRQ(mfp_to_gpio(MFP_PIN_GPIO47)),
.end = PXA_GPIO_TO_IRQ(mfp_to_gpio(MFP_PIN_GPIO47)),
.flags = IORESOURCE_IRQ | IORESOURCE_IRQ_HIGHEDGE,
}
};
static struct smc91x_platdata tavorevb_smc91x_info = {
.flags = SMC91X_USE_16BIT | SMC91X_NOWAIT | SMC91X_USE_DMA,
};
static struct platform_device smc91x_device = {
.name = "smc91x",
.id = 0,
.num_resources = ARRAY_SIZE(smc91x_resources),
.resource = smc91x_resources,
.dev = {
.platform_data = &tavorevb_smc91x_info,
},
};
#if defined(CONFIG_KEYBOARD_PXA27x) || defined(CONFIG_KEYBOARD_PXA27x_MODULE)
static const unsigned int tavorevb_matrix_key_map[] = {
/* KEY(row, col, key_code) */
KEY(0, 4, KEY_A), KEY(0, 5, KEY_B), KEY(0, 6, KEY_C),
KEY(1, 4, KEY_E), KEY(1, 5, KEY_F), KEY(1, 6, KEY_G),
KEY(2, 4, KEY_I), KEY(2, 5, KEY_J), KEY(2, 6, KEY_K),
KEY(3, 4, KEY_M), KEY(3, 5, KEY_N), KEY(3, 6, KEY_O),
KEY(4, 5, KEY_R), KEY(4, 6, KEY_S),
KEY(5, 4, KEY_U), KEY(5, 4, KEY_V), KEY(5, 6, KEY_W),
KEY(6, 4, KEY_Y), KEY(6, 5, KEY_Z),
KEY(0, 3, KEY_0), KEY(2, 0, KEY_1), KEY(2, 1, KEY_2), KEY(2, 2, KEY_3),
KEY(2, 3, KEY_4), KEY(1, 0, KEY_5), KEY(1, 1, KEY_6), KEY(1, 2, KEY_7),
KEY(1, 3, KEY_8), KEY(0, 2, KEY_9),
KEY(6, 6, KEY_SPACE),
KEY(0, 0, KEY_KPASTERISK), /* * */
KEY(0, 1, KEY_KPDOT), /* # */
KEY(4, 1, KEY_UP),
KEY(4, 3, KEY_DOWN),
KEY(4, 0, KEY_LEFT),
KEY(4, 2, KEY_RIGHT),
KEY(6, 0, KEY_HOME),
KEY(3, 2, KEY_END),
KEY(6, 1, KEY_DELETE),
KEY(5, 2, KEY_BACK),
KEY(6, 3, KEY_CAPSLOCK), /* KEY_LEFTSHIFT), */
KEY(4, 4, KEY_ENTER), /* scroll push */
KEY(6, 2, KEY_ENTER), /* keypad action */
KEY(3, 1, KEY_SEND),
KEY(5, 3, KEY_RECORD),
KEY(5, 0, KEY_VOLUMEUP),
KEY(5, 1, KEY_VOLUMEDOWN),
KEY(3, 0, KEY_F22), /* soft1 */
KEY(3, 3, KEY_F23), /* soft2 */
};
static struct matrix_keymap_data tavorevb_matrix_keymap_data = {
.keymap = tavorevb_matrix_key_map,
.keymap_size = ARRAY_SIZE(tavorevb_matrix_key_map),
};
static struct pxa27x_keypad_platform_data tavorevb_keypad_info = {
.matrix_key_rows = 7,
.matrix_key_cols = 7,
.matrix_keymap_data = &tavorevb_matrix_keymap_data,
.debounce_interval = 30,
};
static void __init tavorevb_init_keypad(void)
{
pxa_set_keypad_info(&tavorevb_keypad_info);
}
#else
static inline void tavorevb_init_keypad(void) {}
#endif /* CONFIG_KEYBOARD_PXA27x || CONFIG_KEYBOARD_PXA27x_MODULE */
#if defined(CONFIG_FB_PXA) || defined(CONFIG_FB_PXA_MODULE)
static struct pwm_lookup tavorevb_pwm_lookup[] = {
PWM_LOOKUP("pxa27x-pwm.0", 1, "pwm-backlight.0", NULL, 100000,
PWM_POLARITY_NORMAL),
PWM_LOOKUP("pxa27x-pwm.0", 0, "pwm-backlight.1", NULL, 100000,
PWM_POLARITY_NORMAL),
};
static struct platform_pwm_backlight_data tavorevb_backlight_data[] = {
[0] = {
/* primary backlight */
.max_brightness = 100,
.dft_brightness = 100,
.enable_gpio = -1,
},
[1] = {
/* secondary backlight */
.max_brightness = 100,
.dft_brightness = 100,
.enable_gpio = -1,
},
};
static struct platform_device tavorevb_backlight_devices[] = {
[0] = {
.name = "pwm-backlight",
.id = 0,
.dev = {
.platform_data = &tavorevb_backlight_data[0],
},
},
[1] = {
.name = "pwm-backlight",
.id = 1,
.dev = {
.platform_data = &tavorevb_backlight_data[1],
},
},
};
static uint16_t panel_init[] = {
/* DSTB OUT */
SMART_CMD(0x00),
SMART_CMD_NOOP,
SMART_DELAY(1),
SMART_CMD(0x00),
SMART_CMD_NOOP,
SMART_DELAY(1),
SMART_CMD(0x00),
SMART_CMD_NOOP,
SMART_DELAY(1),
/* STB OUT */
SMART_CMD(0x00),
SMART_CMD(0x1D),
SMART_DAT(0x00),
SMART_DAT(0x05),
SMART_DELAY(1),
/* P-ON Init sequence */
SMART_CMD(0x00), /* OSC ON */
SMART_CMD(0x00),
SMART_DAT(0x00),
SMART_DAT(0x01),
SMART_CMD(0x00),
SMART_CMD(0x01), /* SOURCE DRIVER SHIFT DIRECTION and display RAM setting */
SMART_DAT(0x01),
SMART_DAT(0x27),
SMART_CMD(0x00),
SMART_CMD(0x02), /* LINE INV */
SMART_DAT(0x02),
SMART_DAT(0x00),
SMART_CMD(0x00),
SMART_CMD(0x03), /* IF mode(1) */
SMART_DAT(0x01), /* 8bit smart mode(8-8),high speed write mode */
SMART_DAT(0x30),
SMART_CMD(0x07),
SMART_CMD(0x00), /* RAM Write Mode */
SMART_DAT(0x00),
SMART_DAT(0x03),
SMART_CMD(0x00),
/* DISPLAY Setting, 262K, fixed(NO scroll), no split screen */
SMART_CMD(0x07),
SMART_DAT(0x40), /* 16/18/19 BPP */
SMART_DAT(0x00),
SMART_CMD(0x00),
SMART_CMD(0x08), /* BP, FP Seting, BP=2H, FP=3H */
SMART_DAT(0x03),
SMART_DAT(0x02),
SMART_CMD(0x00),
SMART_CMD(0x0C), /* IF mode(2), using internal clock & MPU */
SMART_DAT(0x00),
SMART_DAT(0x00),
SMART_CMD(0x00),
SMART_CMD(0x0D), /* Frame setting, 1Min. Frequence, 16CLK */
SMART_DAT(0x00),
SMART_DAT(0x10),
SMART_CMD(0x00),
SMART_CMD(0x12), /* Timing(1),ASW W=4CLK, ASW ST=1CLK */
SMART_DAT(0x03),
SMART_DAT(0x02),
SMART_CMD(0x00),
SMART_CMD(0x13), /* Timing(2),OEV ST=0.5CLK, OEV ED=1CLK */
SMART_DAT(0x01),
SMART_DAT(0x02),
SMART_CMD(0x00),
SMART_CMD(0x14), /* Timing(3), ASW HOLD=0.5CLK */
SMART_DAT(0x00),
SMART_DAT(0x00),
SMART_CMD(0x00),
SMART_CMD(0x15), /* Timing(4), CKV ST=0CLK, CKV ED=1CLK */
SMART_DAT(0x20),
SMART_DAT(0x00),
SMART_CMD(0x00),
SMART_CMD(0x1C),
SMART_DAT(0x00),
SMART_DAT(0x00),
SMART_CMD(0x03),
SMART_CMD(0x00),
SMART_DAT(0x04),
SMART_DAT(0x03),
SMART_CMD(0x03),
SMART_CMD(0x01),
SMART_DAT(0x03),
SMART_DAT(0x04),
SMART_CMD(0x03),
SMART_CMD(0x02),
SMART_DAT(0x04),
SMART_DAT(0x03),
SMART_CMD(0x03),
SMART_CMD(0x03),
SMART_DAT(0x03),
SMART_DAT(0x03),
SMART_CMD(0x03),
SMART_CMD(0x04),
SMART_DAT(0x01),
SMART_DAT(0x01),
SMART_CMD(0x03),
SMART_CMD(0x05),
SMART_DAT(0x00),
SMART_DAT(0x00),
SMART_CMD(0x04),
SMART_CMD(0x02),
SMART_DAT(0x00),
SMART_DAT(0x00),
SMART_CMD(0x04),
SMART_CMD(0x03),
SMART_DAT(0x01),
SMART_DAT(0x3F),
SMART_DELAY(0),
/* DISP RAM setting: 240*320 */
SMART_CMD(0x04), /* HADDR, START 0 */
SMART_CMD(0x06),
SMART_DAT(0x00),
SMART_DAT(0x00), /* x1,3 */
SMART_CMD(0x04), /* HADDR, END 4 */
SMART_CMD(0x07),
SMART_DAT(0x00),
SMART_DAT(0xEF), /* x2, 7 */
SMART_CMD(0x04), /* VADDR, START 8 */
SMART_CMD(0x08),
SMART_DAT(0x00), /* y1, 10 */
SMART_DAT(0x00), /* y1, 11 */
SMART_CMD(0x04), /* VADDR, END 12 */
SMART_CMD(0x09),
SMART_DAT(0x01), /* y2, 14 */
SMART_DAT(0x3F), /* y2, 15 */
SMART_CMD(0x02), /* RAM ADDR SETTING 16 */
SMART_CMD(0x00),
SMART_DAT(0x00),
SMART_DAT(0x00), /* x1, 19 */
SMART_CMD(0x02), /* RAM ADDR SETTING 20 */
SMART_CMD(0x01),
SMART_DAT(0x00), /* y1, 22 */
SMART_DAT(0x00), /* y1, 23 */
};
static uint16_t panel_on[] = {
/* Power-IC ON */
SMART_CMD(0x01),
SMART_CMD(0x02),
SMART_DAT(0x07),
SMART_DAT(0x7D),
SMART_CMD(0x01),
SMART_CMD(0x03),
SMART_DAT(0x00),
SMART_DAT(0x05),
SMART_CMD(0x01),
SMART_CMD(0x04),
SMART_DAT(0x00),
SMART_DAT(0x00),
SMART_CMD(0x01),
SMART_CMD(0x05),
SMART_DAT(0x00),
SMART_DAT(0x15),
SMART_CMD(0x01),
SMART_CMD(0x00),
SMART_DAT(0xC0),
SMART_DAT(0x10),
SMART_DELAY(30),
/* DISP ON */
SMART_CMD(0x01),
SMART_CMD(0x01),
SMART_DAT(0x00),
SMART_DAT(0x01),
SMART_CMD(0x01),
SMART_CMD(0x00),
SMART_DAT(0xFF),
SMART_DAT(0xFE),
SMART_DELAY(150),
};
static uint16_t panel_off[] = {
SMART_CMD(0x00),
SMART_CMD(0x1E),
SMART_DAT(0x00),
SMART_DAT(0x0A),
SMART_CMD(0x01),
SMART_CMD(0x00),
SMART_DAT(0xFF),
SMART_DAT(0xEE),
SMART_CMD(0x01),
SMART_CMD(0x00),
SMART_DAT(0xF8),
SMART_DAT(0x12),
SMART_CMD(0x01),
SMART_CMD(0x00),
SMART_DAT(0xE8),
SMART_DAT(0x11),
SMART_CMD(0x01),
SMART_CMD(0x00),
SMART_DAT(0xC0),
SMART_DAT(0x11),
SMART_CMD(0x01),
SMART_CMD(0x00),
SMART_DAT(0x40),
SMART_DAT(0x11),
SMART_CMD(0x01),
SMART_CMD(0x00),
SMART_DAT(0x00),
SMART_DAT(0x10),
};
static uint16_t update_framedata[] = {
/* write ram */
SMART_CMD(0x02),
SMART_CMD(0x02),
/* write frame data */
SMART_CMD_WRITE_FRAME,
};
static void ltm020d550_lcd_power(int on, struct fb_var_screeninfo *var)
{
struct fb_info *info = container_of(var, struct fb_info, var);
if (on) {
pxafb_smart_queue(info, ARRAY_AND_SIZE(panel_init));
pxafb_smart_queue(info, ARRAY_AND_SIZE(panel_on));
} else {
pxafb_smart_queue(info, ARRAY_AND_SIZE(panel_off));
}
if (pxafb_smart_flush(info))
pr_err("%s: timed out\n", __func__);
}
static void ltm020d550_update(struct fb_info *info)
{
pxafb_smart_queue(info, ARRAY_AND_SIZE(update_framedata));
pxafb_smart_flush(info);
}
static struct pxafb_mode_info toshiba_ltm020d550_modes[] = {
[0] = {
.xres = 240,
.yres = 320,
.bpp = 16,
.a0csrd_set_hld = 30,
.a0cswr_set_hld = 30,
.wr_pulse_width = 30,
.rd_pulse_width = 170,
.op_hold_time = 30,
.cmd_inh_time = 60,
/* L_LCLK_A0 and L_LCLK_RD active low */
.sync = FB_SYNC_HOR_HIGH_ACT |
FB_SYNC_VERT_HIGH_ACT,
},
};
static struct pxafb_mach_info tavorevb_lcd_info = {
.modes = toshiba_ltm020d550_modes,
.num_modes = 1,
.lcd_conn = LCD_SMART_PANEL_8BPP | LCD_PCLK_EDGE_FALL,
.pxafb_lcd_power = ltm020d550_lcd_power,
.smart_update = ltm020d550_update,
};
static void __init tavorevb_init_lcd(void)
{
pwm_add_table(tavorevb_pwm_lookup, ARRAY_SIZE(tavorevb_pwm_lookup));
platform_device_register(&tavorevb_backlight_devices[0]);
platform_device_register(&tavorevb_backlight_devices[1]);
pxa_set_fb_info(NULL, &tavorevb_lcd_info);
}
#else
static inline void tavorevb_init_lcd(void) {}
#endif /* CONFIG_FB_PXA || CONFIG_FB_PXA_MODULE */
static void __init tavorevb_init(void)
{
/* initialize MFP configurations */
pxa3xx_mfp_config(ARRAY_AND_SIZE(tavorevb_mfp_cfg));
pxa_set_ffuart_info(NULL);
pxa_set_btuart_info(NULL);
pxa_set_stuart_info(NULL);
platform_device_register(&smc91x_device);
tavorevb_init_lcd();
tavorevb_init_keypad();
}
MACHINE_START(TAVOREVB, "PXA930 Evaluation Board (aka TavorEVB)")
/* Maintainer: Eric Miao <eric.miao@marvell.com> */
.atag_offset = 0x100,
.map_io = pxa3xx_map_io,
.nr_irqs = PXA_NR_IRQS,
.init_irq = pxa3xx_init_irq,
.handle_irq = pxa3xx_handle_irq,
.init_time = pxa_timer_init,
.init_machine = tavorevb_init,
.restart = pxa_restart,
MACHINE_END
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