arch/arm/mach-sa1100/h3100.c

   1 // SPDX-License-Identifier: GPL-2.0-only
   2 /*
   3  * Support for Compaq iPAQ H3100 handheld computer
   4  *
   5  * Copyright (c) 2000,1 Compaq Computer Corporation. (Author: Jamey Hicks)
   6  * Copyright (c) 2009 Dmitry Artamonow <mad_soft@inbox.ru>
   7  */
   8
   9 #include <linux/init.h>
  10 #include <linux/kernel.h>
  11 #include <linux/gpio.h>
  12
  13 #include <video/sa1100fb.h>
  14
  15 #include <asm/mach-types.h>
  16 #include <asm/mach/arch.h>
  17 #include <linux/platform_data/irda-sa11x0.h>
  18
  19 #include <mach/h3xxx.h>
  20 #include <mach/irqs.h>
  21
  22 #include "generic.h"
  23
  24 /*
  25  * helper for sa1100fb
  26  */
  27 static struct gpio h3100_lcd_gpio[] = {
  28         { H3100_GPIO_LCD_3V_ON, GPIOF_OUT_INIT_LOW, "LCD 3V" },
  29         { H3XXX_EGPIO_LCD_ON, GPIOF_OUT_INIT_LOW, "LCD ON" },
  30 };
  31
  32 static bool h3100_lcd_request(void)
  33 {
  34         static bool h3100_lcd_ok;
  35         int rc;
  36
  37         if (h3100_lcd_ok)
  38                 return true;
  39
  40         rc = gpio_request_array(h3100_lcd_gpio, ARRAY_SIZE(h3100_lcd_gpio));
  41         if (rc)
  42                 pr_err("%s: can't request GPIOs\n", __func__);
  43         else
  44                 h3100_lcd_ok = true;
  45
  46         return h3100_lcd_ok;
  47 }
  48
  49 static void h3100_lcd_power(int enable)
  50 {
  51         if (!h3100_lcd_request())
  52                 return;
  53
  54         gpio_set_value(H3100_GPIO_LCD_3V_ON, enable);
  55         gpio_set_value(H3XXX_EGPIO_LCD_ON, enable);
  56 }
  57
  58 static struct sa1100fb_mach_info h3100_lcd_info = {
  59         .pixclock       = 406977,       .bpp            = 4,
  60         .xres           = 320,          .yres           = 240,
  61
  62         .hsync_len      = 26,           .vsync_len      = 41,
  63         .left_margin    = 4,            .upper_margin   = 0,
  64         .right_margin   = 4,            .lower_margin   = 0,
  65
  66         .sync           = FB_SYNC_HOR_HIGH_ACT | FB_SYNC_VERT_HIGH_ACT,
  67         .cmap_greyscale = 1,
  68         .cmap_inverse   = 1,
  69
  70         .lccr0          = LCCR0_Mono | LCCR0_4PixMono | LCCR0_Sngl | LCCR0_Pas,
  71         .lccr3          = LCCR3_OutEnH | LCCR3_PixRsEdg | LCCR3_ACBsDiv(2),
  72
  73         .lcd_power = h3100_lcd_power,
  74 };
  75
  76 static void __init h3100_map_io(void)
  77 {
  78         h3xxx_map_io();
  79
  80         /* Older bootldrs put GPIO2-9 in alternate mode on the
  81            assumption that they are used for video */
  82         GAFR &= ~0x000001fb;
  83 }
  84
  85 /*
  86  * This turns the IRDA power on or off on the Compaq H3100
  87  */
  88 static struct gpio h3100_irda_gpio[] = {
  89         { H3100_GPIO_IR_ON,     GPIOF_OUT_INIT_LOW, "IrDA power" },
  90         { H3100_GPIO_IR_FSEL,   GPIOF_OUT_INIT_LOW, "IrDA fsel" },
  91 };
  92
  93 static int h3100_irda_set_power(struct device *dev, unsigned int state)
  94 {
  95         gpio_set_value(H3100_GPIO_IR_ON, state);
  96         return 0;
  97 }
  98
  99 static void h3100_irda_set_speed(struct device *dev, unsigned int speed)
 100 {
 101         gpio_set_value(H3100_GPIO_IR_FSEL, !(speed < 4000000));
 102 }
 103
 104 static int h3100_irda_startup(struct device *dev)
 105 {
 106         return gpio_request_array(h3100_irda_gpio, sizeof(h3100_irda_gpio));
 107 }
 108
 109 static void h3100_irda_shutdown(struct device *dev)
 110 {
 111         return gpio_free_array(h3100_irda_gpio, sizeof(h3100_irda_gpio));
 112 }
 113
 114 static struct irda_platform_data h3100_irda_data = {
 115         .set_power      = h3100_irda_set_power,
 116         .set_speed      = h3100_irda_set_speed,
 117         .startup        = h3100_irda_startup,
 118         .shutdown       = h3100_irda_shutdown,
 119 };
 120
 121 static void __init h3100_mach_init(void)
 122 {
 123         h3xxx_mach_init();
 124
 125         sa11x0_register_pcmcia(-1, NULL);
 126         sa11x0_register_lcd(&h3100_lcd_info);
 127         sa11x0_register_irda(&h3100_irda_data);
 128 }
 129
 130 MACHINE_START(H3100, "Compaq iPAQ H3100")
 131         .atag_offset    = 0x100,
 132         .map_io         = h3100_map_io,
 133         .nr_irqs        = SA1100_NR_IRQS,
 134         .init_irq       = sa1100_init_irq,
 135         .init_time      = sa1100_timer_init,
 136         .init_machine   = h3100_mach_init,
 137         .init_late      = sa11x0_init_late,
 138         .restart        = sa11x0_restart,
 139 MACHINE_END
 140