packages/linux/linux-ezx-2.6.21/ezx-backlight.patch

   1
   2 #
   3 # Patch managed by http://www.mn-logistik.de/unsupported/pxa250/patcher
   4 #
   5
   6 Index: linux-2.6.21/drivers/video/backlight/Kconfig
   7 ===================================================================
   8 --- linux-2.6.21.orig/drivers/video/backlight/Kconfig   2007-05-08 14:19:18.000000000 -0300
   9 +++ linux-2.6.21/drivers/video/backlight/Kconfig        2007-05-08 14:22:22.000000000 -0300
  10 @@ -63,3 +63,12 @@
  11         help
  12           If you have a Frontpath ProGear say Y to enable the
  13           backlight driver.
  14 +
  15 +config BACKLIGHT_EZX
  16 +       tristate "Motorola EXZ Backlight Driver (A780/E680/E680i)"
  17 +       depends on BACKLIGHT_CLASS_DEVICE && PXA_EZX
  18 +       default y
  19 +       help
  20 +         If you have a Motorola A780 or E680(i), say y to enable the
  21 +         backlight driver.
  22 +
  23 Index: linux-2.6.21/drivers/video/backlight/Makefile
  24 ===================================================================
  25 --- linux-2.6.21.orig/drivers/video/backlight/Makefile  2007-05-08 14:19:18.000000000 -0300
  26 +++ linux-2.6.21/drivers/video/backlight/Makefile       2007-05-08 14:22:22.000000000 -0300
  27 @@ -6,3 +6,4 @@
  28  obj-$(CONFIG_BACKLIGHT_HP680)  += hp680_bl.o
  29  obj-$(CONFIG_BACKLIGHT_LOCOMO) += locomolcd.o
  30  obj-$(CONFIG_BACKLIGHT_PROGEAR) += progear_bl.o
  31 +obj-$(CONFIG_BACKLIGHT_EZX)    += ezx_bl.o
  32 Index: linux-2.6.21/drivers/video/backlight/ezx_bl.c
  33 ===================================================================
  34 --- /dev/null   1970-01-01 00:00:00.000000000 +0000
  35 +++ linux-2.6.21/drivers/video/backlight/ezx_bl.c       2007-05-08 14:24:16.000000000 -0300
  36 @@ -0,0 +1,142 @@
  37 +/*
  38 + * Backlight Driver for Motorola A780 and E680(i) GSM Phones.
  39 + *
  40 + * Copyright 2006 Vanille Media
  41 + *
  42 + * Author: Michael Lauer <mickey@Vanille.de>
  43 + *
  44 + * This program is free software; you can redistribute it and/or modify
  45 + * it under the terms of the GNU General Public License version 2 as
  46 + * published by the Free Software Foundation.
  47 + *
  48 + */
  49 +
  50 +#include <linux/module.h>
  51 +#include <linux/kernel.h>
  52 +#include <linux/init.h>
  53 +#include <linux/platform_device.h>
  54 +#include <linux/fb.h>
  55 +#include <linux/backlight.h>
  56 +
  57 +#include <asm/arch/pxa-regs.h>
  58 +#include <asm/arch/ezx.h>
  59 +
  60 +#define EZX_MIN_INTENSITY       0
  61 +#define EZX_MAX_INTENSITY      50
  62 +#define EZX_DEFAULT_INTENSITY  30
  63 +
  64 +static struct backlight_device *ezx_backlight_device;
  65 +static int last_intensity;
  66 +static int suspended;
  67 +
  68 +static int ezxbl_send_intensity(struct backlight_device *bd)
  69 +{
  70 +       int intensity = bd->props.brightness;
  71 +
  72 +       if (suspended || bd->props.power != FB_BLANK_UNBLANK ||
  73 +                       bd->props.fb_blank != FB_BLANK_UNBLANK)
  74 +               intensity = 0;
  75 +
  76 +       if ( !last_intensity && intensity ) {
  77 +               PWM_CTRL0 = 2; /* pre-scaler */
  78 +               PWM_PWDUTY0 = intensity; /* duty cycle */
  79 +               PWM_PERVAL0 = 49; /* period */
  80 +               pxa_gpio_mode(GPIO16_PWM0_MD); /* set GPIO16 as alternate function + output */
  81 +               pxa_set_cken(CKEN0_PWM0, 1); /* clock enable */
  82 +       }
  83 +       else if ( last_intensity && !intensity ) {
  84 +               PWM_PWDUTY0 = 0;
  85 +               GAFR0_U &= 0xFFFFFFFC; /* ??? */
  86 +               pxa_set_cken(CKEN0_PWM0, 0); /* clock disable */
  87 +               pxa_gpio_mode(GPIO16_PWM0); /* set GPIO16 as input */
  88 +       } else if ( last_intensity && intensity ) {
  89 +               PWM_PWDUTY0 = intensity; /* duty cycle */
  90 +       }
  91 +       last_intensity = intensity;
  92 +       return 0;
  93 +}
  94 +
  95 +static int ezxbl_get_intensity(struct backlight_device *bd)
  96 +{
  97 +       return last_intensity;
  98 +}
  99 +
 100 +static int ezxbl_set_intensity(struct backlight_device *bd)
 101 +{
 102 +       return ezxbl_send_intensity(ezx_backlight_device);
 103 +}
 104 +
 105 +#ifdef CONFIG_PM
 106 +static int ezxbl_suspend(struct platform_device *pdev, pm_message_t state)
 107 +{
 108 +       suspended = 1;
 109 +       ezxbl_set_intensity(ezx_backlight_device);
 110 +       return 0;
 111 +}
 112 +
 113 +static int ezxbl_resume(struct platform_device *pdev)
 114 +{
 115 +       suspended = 0;
 116 +       ezxbl_set_intensity(ezx_backlight_device);
 117 +       return 0;
 118 +}
 119 +#else
 120 +#define ezxbl_suspend  NULL
 121 +#define ezxbl_resume   NULL
 122 +#endif
 123 +
 124 +static struct backlight_ops ezxbl_ops = {
 125 +       .get_brightness = ezxbl_get_intensity,
 126 +       .update_status  = ezxbl_set_intensity,
 127 +};
 128 +
 129 +static int __init ezxbl_probe(struct platform_device *pdev)
 130 +{
 131 +       ezx_backlight_device = backlight_device_register ("ezx-bl",
 132 +               &pdev->dev, NULL, &ezxbl_ops);
 133 +       if (IS_ERR (ezx_backlight_device))
 134 +               return PTR_ERR (ezx_backlight_device);
 135 +
 136 +       platform_set_drvdata(pdev, ezx_backlight_device);
 137 +
 138 +       ezx_backlight_device->props.power = FB_BLANK_UNBLANK;
 139 +       ezx_backlight_device->props.max_brightness = EZX_MAX_INTENSITY;
 140 +       ezx_backlight_device->props.brightness = EZX_DEFAULT_INTENSITY;
 141 +       ezxbl_set_intensity(ezx_backlight_device);
 142 +       backlight_update_status(ezx_backlight_device);
 143 +
 144 +       return 0;
 145 +}
 146 +
 147 +static int ezxbl_remove(struct platform_device *pdev)
 148 +{
 149 +       backlight_device_unregister(ezx_backlight_device);
 150 +       return 0;
 151 +}
 152 +
 153 +static struct platform_driver ezxbl_driver = {
 154 +       .probe          = ezxbl_probe,
 155 +       .remove         = ezxbl_remove,
 156 +       .suspend        = ezxbl_suspend,
 157 +       .resume         = ezxbl_resume,
 158 +       .driver         = {
 159 +               .name           = "ezx-bl",
 160 +       },
 161 +};
 162 +
 163 +static int __init ezxbl_init(void)
 164 +{
 165 +       return platform_driver_register(&ezxbl_driver);
 166 +}
 167 +
 168 +static void __exit ezxbl_exit(void)
 169 +{
 170 +       platform_driver_unregister(&ezxbl_driver);
 171 +}
 172 +
 173 +module_init(ezxbl_init);
 174 +module_exit(ezxbl_exit);
 175 +
 176 +MODULE_AUTHOR("Michael Lauer <mickey@Vanille.de>");
 177 +MODULE_DESCRIPTION("Backlight Driver for Motorola A780|E680(i)");
 178 +MODULE_LICENSE("GPL");
 179 Index: linux-2.6.21/arch/arm/mach-pxa/ezx.c
 180 ===================================================================
 181 --- linux-2.6.21.orig/arch/arm/mach-pxa/ezx.c   2007-05-08 14:22:21.000000000 -0300
 182 +++ linux-2.6.21/arch/arm/mach-pxa/ezx.c        2007-05-08 14:22:22.000000000 -0300
 183 @@ -67,6 +67,12 @@
 184  #endif
 185  EXPORT_SYMBOL(ezx_backlight_power);
 186
 187 +/* EZX LCD Backlight */
 188 +static struct platform_device ezxbacklight_device = {
 189 +       .name           = "ezx-bl",
 190 +       .id             = -1,
 191 +};
 192 +
 193  /* SSP */
 194  struct platform_device ezxssp_device = {
 195         .name           = "ezx-ssp",
 196 @@ -204,6 +210,7 @@
 197         &ezxpcap_device,
 198         &ezxemu_device,
 199         &pcap_ts_device,
 200 +       &ezxbacklight_device,
 201  };
 202
 203  /* PM */