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5f72d85e28
As GPIOs are going to move to platform device, there is no guarantee that they will be available at init_machine time. Request all GPIOs directly in lcd_power callback and not at init_machine time. Signed-off-by: Dmitry Eremin-Solenikov <dbaryshkov@gmail.com> Acked-by: Linus Walleij <linus.walleij@linaro.org> Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
136 lines
3.2 KiB
C
136 lines
3.2 KiB
C
/*
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* Support for Compaq iPAQ H3100 handheld computer
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*
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* Copyright (c) 2000,1 Compaq Computer Corporation. (Author: Jamey Hicks)
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* Copyright (c) 2009 Dmitry Artamonow <mad_soft@inbox.ru>
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License version 2 as
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* published by the Free Software Foundation.
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*
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*/
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#include <linux/init.h>
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#include <linux/kernel.h>
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#include <linux/gpio.h>
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#include <video/sa1100fb.h>
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#include <asm/mach-types.h>
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#include <asm/mach/arch.h>
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#include <asm/mach/irda.h>
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#include <mach/h3xxx.h>
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#include <mach/irqs.h>
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#include "generic.h"
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/*
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* helper for sa1100fb
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*/
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static struct gpio h3100_lcd_gpio[] = {
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{ H3100_GPIO_LCD_3V_ON, GPIOF_OUT_INIT_LOW, "LCD 3V" },
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{ H3XXX_EGPIO_LCD_ON, GPIOF_OUT_INIT_LOW, "LCD ON" },
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};
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static bool h3100_lcd_request(void)
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{
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static bool h3100_lcd_ok;
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int rc;
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if (h3100_lcd_ok)
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return true;
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rc = gpio_request_array(h3100_lcd_gpio, ARRAY_SIZE(h3100_lcd_gpio));
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if (rc)
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pr_err("%s: can't request GPIOs\n", __func__);
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else
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h3100_lcd_ok = true;
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return h3100_lcd_ok;
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}
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static void h3100_lcd_power(int enable)
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{
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if (!h3100_lcd_request())
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return;
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gpio_set_value(H3100_GPIO_LCD_3V_ON, enable);
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gpio_set_value(H3XXX_EGPIO_LCD_ON, enable);
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}
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static struct sa1100fb_mach_info h3100_lcd_info = {
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.pixclock = 406977, .bpp = 4,
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.xres = 320, .yres = 240,
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.hsync_len = 26, .vsync_len = 41,
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.left_margin = 4, .upper_margin = 0,
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.right_margin = 4, .lower_margin = 0,
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.sync = FB_SYNC_HOR_HIGH_ACT | FB_SYNC_VERT_HIGH_ACT,
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.cmap_greyscale = 1,
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.cmap_inverse = 1,
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.lccr0 = LCCR0_Mono | LCCR0_4PixMono | LCCR0_Sngl | LCCR0_Pas,
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.lccr3 = LCCR3_OutEnH | LCCR3_PixRsEdg | LCCR3_ACBsDiv(2),
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.lcd_power = h3100_lcd_power,
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};
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static void __init h3100_map_io(void)
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{
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h3xxx_map_io();
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/* Older bootldrs put GPIO2-9 in alternate mode on the
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assumption that they are used for video */
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GAFR &= ~0x000001fb;
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}
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/*
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* This turns the IRDA power on or off on the Compaq H3100
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*/
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static int h3100_irda_set_power(struct device *dev, unsigned int state)
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{
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gpio_set_value(H3100_GPIO_IR_ON, state);
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return 0;
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}
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static void h3100_irda_set_speed(struct device *dev, unsigned int speed)
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{
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gpio_set_value(H3100_GPIO_IR_FSEL, !(speed < 4000000));
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}
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static struct irda_platform_data h3100_irda_data = {
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.set_power = h3100_irda_set_power,
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.set_speed = h3100_irda_set_speed,
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};
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static struct gpio_default_state h3100_default_gpio[] = {
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{ H3100_GPIO_IR_ON, GPIO_MODE_OUT0, "IrDA power" },
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{ H3100_GPIO_IR_FSEL, GPIO_MODE_OUT0, "IrDA fsel" },
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{ H3XXX_GPIO_COM_DCD, GPIO_MODE_IN, "COM DCD" },
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{ H3XXX_GPIO_COM_CTS, GPIO_MODE_IN, "COM CTS" },
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{ H3XXX_GPIO_COM_RTS, GPIO_MODE_OUT0, "COM RTS" },
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};
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static void __init h3100_mach_init(void)
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{
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h3xxx_init_gpio(h3100_default_gpio, ARRAY_SIZE(h3100_default_gpio));
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h3xxx_mach_init();
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sa11x0_register_lcd(&h3100_lcd_info);
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sa11x0_register_irda(&h3100_irda_data);
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}
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MACHINE_START(H3100, "Compaq iPAQ H3100")
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.atag_offset = 0x100,
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.map_io = h3100_map_io,
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.nr_irqs = SA1100_NR_IRQS,
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.init_irq = sa1100_init_irq,
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.init_time = sa1100_timer_init,
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.init_machine = h3100_mach_init,
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.init_late = sa11x0_init_late,
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.restart = sa11x0_restart,
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MACHINE_END
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