recipes-kernel/linux/linux-ti33x-psp-3.2/0021-beaglebone-use-P8_6-gpio1_3-as-w1-bus.patch

   1 From 4428744c852ed5f9d5a7dfa9c5d0a783e6134582 Mon Sep 17 00:00:00 2001
   2 From: Koen Kooi <koen@dominion.thruhere.net>
   3 Date: Tue, 7 Feb 2012 11:01:13 +0100
   4 Subject: [PATCH 21/21] beaglebone: use P8_6 (gpio1_3) as w1 bus
   5
   6 Signed-off-by: Koen Kooi <koen@dominion.thruhere.net>
   7 ---
   8  arch/arm/mach-omap2/board-am335xevm.c |   31 +++++++++++++++++++++++++++++++
   9  1 files changed, 31 insertions(+), 0 deletions(-)
  10
  11 diff --git a/arch/arm/mach-omap2/board-am335xevm.c b/arch/arm/mach-omap2/board-am335xevm.c
  12 index c31c0aa..538466d 100644
  13 --- a/arch/arm/mach-omap2/board-am335xevm.c
  14 +++ b/arch/arm/mach-omap2/board-am335xevm.c
  15 @@ -37,6 +37,7 @@
  16  #include <linux/mfd/tps65217.h>
  17  #include <linux/pwm_backlight.h>
  18  #include <linux/pwm/pwm.h>
  19 +#include <linux/w1-gpio.h>
  20
  21  /* LCD controller is similar to DA850 */
  22  #include <video/da8xx-fb.h>
  23 @@ -603,6 +604,11 @@ static struct pinmux_config bbtoys7_pin_mux[] = {
  24         {NULL, 0},
  25  };
  26
  27 +static struct pinmux_config w1_gpio_pin_mux[] = {
  28 +       {"gpmc_ad3.gpio1_3",    OMAP_MUX_MODE7 | AM33XX_PIN_INPUT_PULLUP},
  29 +       {NULL, 0},
  30 +};
  31 +
  32  static struct pinmux_config tsc_pin_mux[] = {
  33         {"ain0.ain0",           OMAP_MUX_MODE0 | AM33XX_INPUT_EN},
  34         {"ain1.ain1",           OMAP_MUX_MODE0 | AM33XX_INPUT_EN},
  35 @@ -1026,6 +1032,19 @@ static struct pinmux_config profibus_pin_mux[] = {
  36         {NULL, 0},
  37  };
  38
  39 +#define BEAGLEBONE_W1_GPIO GPIO_TO_PIN(1, 3)
  40 +
  41 +static struct w1_gpio_platform_data bone_w1_gpio_pdata = {
  42 +       .pin            = BEAGLEBONE_W1_GPIO,
  43 +       .is_open_drain  = 0,
  44 +};
  45 +
  46 +static struct platform_device bone_w1_device = {
  47 +       .name                   = "w1-gpio",
  48 +       .id                     = -1,
  49 +       .dev.platform_data      = &bone_w1_gpio_pdata,
  50 +};
  51 +
  52  /* LEDS - gpio1_21 -> gpio1_24 */
  53
  54  #define BEAGLEBONE_USR1_LED  GPIO_TO_PIN(1, 21)
  55 @@ -1349,6 +1368,17 @@ static void dvileds_init(int evm_id, int profile )
  56                 pr_err("failed to register BeagleBone DVI cape LEDS\n");
  57  }
  58
  59 +static void bonew1_gpio_init(int evm_id, int profile )
  60 +{
  61 +       int err;
  62 +       setup_pin_mux(w1_gpio_pin_mux);
  63 +       err = platform_device_register(&bone_w1_device);
  64 +       if (err)
  65 +               pr_err("failed to register w1-gpio\n");
  66 +       else
  67 +               pr_info("w1-gpio connected to P8_6\n");
  68 +}
  69 +
  70  static void rgmii1_init(int evm_id, int profile)
  71  {
  72         setup_pin_mux(rgmii1_pin_mux);
  73 @@ -2228,6 +2258,7 @@ static struct evm_dev_cfg beaglebone_dev_cfg[] = {
  74         {i2c2_init,     DEV_ON_BASEBOARD, PROFILE_NONE},
  75         {mmc0_init,     DEV_ON_BASEBOARD, PROFILE_NONE},
  76         {boneleds_init, DEV_ON_BASEBOARD, PROFILE_ALL},
  77 +       {bonew1_gpio_init, DEV_ON_BASEBOARD, PROFILE_ALL},
  78         {NULL, 0, 0},
  79  };
  80
  81 --
  82 1.7.2.5
  83