kernel/2.6.29.6-aldebaran-rt/arch/arm/mach-pxa/sharpsl_pm.c

   1 /*
   2  * Battery and Power Management code for the Sharp SL-C7xx and SL-Cxx00
   3  * series of PDAs
   4  *
   5  * Copyright (c) 2004-2005 Richard Purdie
   6  *
   7  * Based on code written by Sharp for 2.4 kernels
   8  *
   9  * This program is free software; you can redistribute it and/or modify
  10  * it under the terms of the GNU General Public License version 2 as
  11  * published by the Free Software Foundation.
  12  *
  13  */
  14
  15 #undef DEBUG
  16
  17 #include <linux/module.h>
  18 #include <linux/init.h>
  19 #include <linux/kernel.h>
  20 #include <linux/interrupt.h>
  21 #include <linux/irq.h>
  22 #include <linux/platform_device.h>
  23 #include <linux/apm-emulation.h>
  24
  25 #include <mach/hardware.h>
  26 #include <asm/mach-types.h>
  27 #include <mach/pm.h>
  28 #include <mach/pxa-regs.h>
  29 #include <mach/pxa2xx-gpio.h>
  30 #include <mach/sharpsl.h>
  31 #include "sharpsl.h"
  32
  33 struct battery_thresh spitz_battery_levels_acin[] = {
  34         { 213, 100},
  35         { 212,  98},
  36         { 211,  95},
  37         { 210,  93},
  38         { 209,  90},
  39         { 208,  88},
  40         { 207,  85},
  41         { 206,  83},
  42         { 205,  80},
  43         { 204,  78},
  44         { 203,  75},
  45         { 202,  73},
  46         { 201,  70},
  47         { 200,  68},
  48         { 199,  65},
  49         { 198,  63},
  50         { 197,  60},
  51         { 196,  58},
  52         { 195,  55},
  53         { 194,  53},
  54         { 193,  50},
  55         { 192,  48},
  56         { 192,  45},
  57         { 191,  43},
  58         { 191,  40},
  59         { 190,  38},
  60         { 190,  35},
  61         { 189,  33},
  62         { 188,  30},
  63         { 187,  28},
  64         { 186,  25},
  65         { 185,  23},
  66         { 184,  20},
  67         { 183,  18},
  68         { 182,  15},
  69         { 181,  13},
  70         { 180,  10},
  71         { 179,   8},
  72         { 178,   5},
  73         {   0,   0},
  74 };
  75
  76 struct battery_thresh  spitz_battery_levels_noac[] = {
  77         { 213, 100},
  78         { 212,  98},
  79         { 211,  95},
  80         { 210,  93},
  81         { 209,  90},
  82         { 208,  88},
  83         { 207,  85},
  84         { 206,  83},
  85         { 205,  80},
  86         { 204,  78},
  87         { 203,  75},
  88         { 202,  73},
  89         { 201,  70},
  90         { 200,  68},
  91         { 199,  65},
  92         { 198,  63},
  93         { 197,  60},
  94         { 196,  58},
  95         { 195,  55},
  96         { 194,  53},
  97         { 193,  50},
  98         { 192,  48},
  99         { 191,  45},
 100         { 190,  43},
 101         { 189,  40},
 102         { 188,  38},
 103         { 187,  35},
 104         { 186,  33},
 105         { 185,  30},
 106         { 184,  28},
 107         { 183,  25},
 108         { 182,  23},
 109         { 181,  20},
 110         { 180,  18},
 111         { 179,  15},
 112         { 178,  13},
 113         { 177,  10},
 114         { 176,   8},
 115         { 175,   5},
 116         {   0,   0},
 117 };
 118
 119 /* MAX1111 Commands */
 120 #define MAXCTRL_PD0      1u << 0
 121 #define MAXCTRL_PD1      1u << 1
 122 #define MAXCTRL_SGL      1u << 2
 123 #define MAXCTRL_UNI      1u << 3
 124 #define MAXCTRL_SEL_SH   4
 125 #define MAXCTRL_STR      1u << 7
 126
 127 /*
 128  * Read MAX1111 ADC
 129  */
 130 int sharpsl_pm_pxa_read_max1111(int channel)
 131 {
 132         if (machine_is_tosa()) // Ugly, better move this function into another module
 133             return 0;
 134
 135 #ifdef CONFIG_CORGI_SSP_DEPRECATED
 136         return corgi_ssp_max1111_get((channel << MAXCTRL_SEL_SH) | MAXCTRL_PD0 | MAXCTRL_PD1
 137                         | MAXCTRL_SGL | MAXCTRL_UNI | MAXCTRL_STR);
 138 #else
 139         extern int max1111_read_channel(int);
 140
 141         /* max1111 accepts channels from 0-3, however,
 142          * it is encoded from 0-7 here in the code.
 143          */
 144         return max1111_read_channel(channel >> 1);
 145 #endif
 146 }
 147
 148 void sharpsl_pm_pxa_init(void)
 149 {
 150         pxa_gpio_mode(sharpsl_pm.machinfo->gpio_acin | GPIO_IN);
 151         pxa_gpio_mode(sharpsl_pm.machinfo->gpio_batfull | GPIO_IN);
 152         pxa_gpio_mode(sharpsl_pm.machinfo->gpio_batlock | GPIO_IN);
 153
 154         /* Register interrupt handlers */
 155         if (request_irq(IRQ_GPIO(sharpsl_pm.machinfo->gpio_acin), sharpsl_ac_isr, IRQF_DISABLED, "AC Input Detect", sharpsl_ac_isr)) {
 156                 dev_err(sharpsl_pm.dev, "Could not get irq %d.\n", IRQ_GPIO(sharpsl_pm.machinfo->gpio_acin));
 157         }
 158         else set_irq_type(IRQ_GPIO(sharpsl_pm.machinfo->gpio_acin),IRQ_TYPE_EDGE_BOTH);
 159
 160         if (request_irq(IRQ_GPIO(sharpsl_pm.machinfo->gpio_batlock), sharpsl_fatal_isr, IRQF_DISABLED, "Battery Cover", sharpsl_fatal_isr)) {
 161                 dev_err(sharpsl_pm.dev, "Could not get irq %d.\n", IRQ_GPIO(sharpsl_pm.machinfo->gpio_batlock));
 162         }
 163         else set_irq_type(IRQ_GPIO(sharpsl_pm.machinfo->gpio_batlock),IRQ_TYPE_EDGE_FALLING);
 164
 165         if (sharpsl_pm.machinfo->gpio_fatal) {
 166                 if (request_irq(IRQ_GPIO(sharpsl_pm.machinfo->gpio_fatal), sharpsl_fatal_isr, IRQF_DISABLED, "Fatal Battery", sharpsl_fatal_isr)) {
 167                         dev_err(sharpsl_pm.dev, "Could not get irq %d.\n", IRQ_GPIO(sharpsl_pm.machinfo->gpio_fatal));
 168                 }
 169                 else set_irq_type(IRQ_GPIO(sharpsl_pm.machinfo->gpio_fatal),IRQ_TYPE_EDGE_FALLING);
 170         }
 171
 172         if (sharpsl_pm.machinfo->batfull_irq)
 173         {
 174                 /* Register interrupt handler. */
 175                 if (request_irq(IRQ_GPIO(sharpsl_pm.machinfo->gpio_batfull), sharpsl_chrg_full_isr, IRQF_DISABLED, "CO", sharpsl_chrg_full_isr)) {
 176                         dev_err(sharpsl_pm.dev, "Could not get irq %d.\n", IRQ_GPIO(sharpsl_pm.machinfo->gpio_batfull));
 177                 }
 178                 else set_irq_type(IRQ_GPIO(sharpsl_pm.machinfo->gpio_batfull),IRQ_TYPE_EDGE_RISING);
 179         }
 180 }
 181
 182 void sharpsl_pm_pxa_remove(void)
 183 {
 184         free_irq(IRQ_GPIO(sharpsl_pm.machinfo->gpio_acin), sharpsl_ac_isr);
 185         free_irq(IRQ_GPIO(sharpsl_pm.machinfo->gpio_batlock), sharpsl_fatal_isr);
 186
 187         if (sharpsl_pm.machinfo->gpio_fatal)
 188                 free_irq(IRQ_GPIO(sharpsl_pm.machinfo->gpio_fatal), sharpsl_fatal_isr);
 189
 190         if (sharpsl_pm.machinfo->batfull_irq)
 191                 free_irq(IRQ_GPIO(sharpsl_pm.machinfo->gpio_batfull), sharpsl_chrg_full_isr);
 192 }