arch/arm/mach-pxa/eseries.c

   1 /*
   2  * Hardware definitions for the Toshiba eseries PDAs
   3  *
   4  * Copyright (c) 2003 Ian Molton <spyro@f2s.com>
   5  *
   6  * This file is licensed under
   7  * the terms of the GNU General Public License version 2. This program
   8  * is licensed "as is" without any warranty of any kind, whether express
   9  * or implied.
  10  *
  11  */
  12
  13 #include <linux/kernel.h>
  14 #include <linux/init.h>
  15 #include <linux/gpio.h>
  16 #include <linux/delay.h>
  17 #include <linux/platform_device.h>
  18
  19 #include <asm/setup.h>
  20 #include <asm/mach/arch.h>
  21 #include <asm/mach-types.h>
  22
  23 #include <mach/pxa25x.h>
  24 #include <mach/eseries-gpio.h>
  25 #include <mach/udc.h>
  26 #include <mach/irda.h>
  27
  28 #include "generic.h"
  29 #include "clock.h"
  30
  31 /* Only e800 has 128MB RAM */
  32 void __init eseries_fixup(struct machine_desc *desc,
  33         struct tag *tags, char **cmdline, struct meminfo *mi)
  34 {
  35         mi->nr_banks=1;
  36         mi->bank[0].start = 0xa0000000;
  37         mi->bank[0].node = 0;
  38         if (machine_is_e800())
  39                 mi->bank[0].size = (128*1024*1024);
  40         else
  41                 mi->bank[0].size = (64*1024*1024);
  42 }
  43
  44 struct pxa2xx_udc_mach_info e7xx_udc_mach_info = {
  45         .gpio_vbus   = GPIO_E7XX_USB_DISC,
  46         .gpio_pullup = GPIO_E7XX_USB_PULLUP,
  47         .gpio_pullup_inverted = 1
  48 };
  49
  50 struct pxaficp_platform_data e7xx_ficp_platform_data = {
  51         .gpio_pwdown            = GPIO_E7XX_IR_OFF,
  52         .transceiver_cap        = IR_SIRMODE | IR_OFF,
  53 };
  54
  55 int eseries_tmio_enable(struct platform_device *dev)
  56 {
  57         /* Reset - bring SUSPEND high before PCLR */
  58         gpio_set_value(GPIO_ESERIES_TMIO_SUSPEND, 0);
  59         gpio_set_value(GPIO_ESERIES_TMIO_PCLR, 0);
  60         msleep(1);
  61         gpio_set_value(GPIO_ESERIES_TMIO_SUSPEND, 1);
  62         msleep(1);
  63         gpio_set_value(GPIO_ESERIES_TMIO_PCLR, 1);
  64         msleep(1);
  65         return 0;
  66 }
  67
  68 int eseries_tmio_disable(struct platform_device *dev)
  69 {
  70         gpio_set_value(GPIO_ESERIES_TMIO_SUSPEND, 0);
  71         gpio_set_value(GPIO_ESERIES_TMIO_PCLR, 0);
  72         return 0;
  73 }
  74
  75 int eseries_tmio_suspend(struct platform_device *dev)
  76 {
  77         gpio_set_value(GPIO_ESERIES_TMIO_SUSPEND, 0);
  78         return 0;
  79 }
  80
  81 int eseries_tmio_resume(struct platform_device *dev)
  82 {
  83         gpio_set_value(GPIO_ESERIES_TMIO_SUSPEND, 1);
  84         msleep(1);
  85         return 0;
  86 }
  87
  88 void eseries_get_tmio_gpios(void)
  89 {
  90         gpio_request(GPIO_ESERIES_TMIO_SUSPEND, NULL);
  91         gpio_request(GPIO_ESERIES_TMIO_PCLR, NULL);
  92         gpio_direction_output(GPIO_ESERIES_TMIO_SUSPEND, 0);
  93         gpio_direction_output(GPIO_ESERIES_TMIO_PCLR, 0);
  94 }
  95
  96 /* TMIO controller uses the same resources on all e-series machines. */
  97 struct resource eseries_tmio_resources[] = {
  98         [0] = {
  99                 .start  = PXA_CS4_PHYS,
 100                 .end    = PXA_CS4_PHYS + 0x1fffff,
 101                 .flags  = IORESOURCE_MEM,
 102         },
 103         [1] = {
 104                 .start  = IRQ_GPIO(GPIO_ESERIES_TMIO_IRQ),
 105                 .end    = IRQ_GPIO(GPIO_ESERIES_TMIO_IRQ),
 106                 .flags  = IORESOURCE_IRQ,
 107         },
 108 };
 109
 110 /* Some e-series hardware cannot control the 32K clock */
 111 static void clk_32k_dummy(struct clk *clk)
 112 {
 113 }
 114
 115 static const struct clkops clk_32k_dummy_ops = {
 116         .enable         = clk_32k_dummy,
 117         .disable        = clk_32k_dummy,
 118 };
 119
 120 static struct clk tmio_dummy_clk = {
 121         .ops    = &clk_32k_dummy_ops,
 122         .rate   = 32768,
 123 };
 124
 125 static struct clk_lookup eseries_clkregs[] = {
 126         INIT_CLKREG(&tmio_dummy_clk, NULL, "CLK_CK32K"),
 127 };
 128
 129 void eseries_register_clks(void)
 130 {
 131         clks_register(eseries_clkregs, ARRAY_SIZE(eseries_clkregs));
 132 }
 133