LXR linux/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 */
  32void __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
  44struct 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
  50struct pxaficp_platform_data e7xx_ficp_platform_data = {
  51        .gpio_pwdown            = GPIO_E7XX_IR_OFF,
  52        .transceiver_cap        = IR_SIRMODE | IR_OFF,
  53};
  54
  55int 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
  68int 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
  75int eseries_tmio_suspend(struct platform_device *dev)
  76{
  77        gpio_set_value(GPIO_ESERIES_TMIO_SUSPEND, 0);
  78        return 0;
  79}
  80
  81int 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
  88void 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. */
  97struct 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 */
 111static void clk_32k_dummy(struct clk *clk)
 112{
 113}
 114
 115static const struct clkops clk_32k_dummy_ops = {
 116        .enable         = clk_32k_dummy,
 117        .disable        = clk_32k_dummy,
 118};
 119
 120static struct clk tmio_dummy_clk = {
 121        .ops    = &clk_32k_dummy_ops,
 122        .rate   = 32768,
 123};
 124
 125static struct clk_lookup eseries_clkregs[] = {
 126        INIT_CLKREG(&tmio_dummy_clk, NULL, "CLK_CK32K"),
 127};
 128
 129void eseries_register_clks(void)
 130{
 131        clks_register(eseries_clkregs, ARRAY_SIZE(eseries_clkregs));
 132}
 133
 134