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From 6a63fb6bd7120af9a760fa0f2db9461bfcf29791 Mon Sep 17 00:00:00 2001
From: Serge Schneider <serge@raspberrypi.org>
Date: Wed, 3 Sep 2014 14:44:22 +0100
Subject: [PATCH 080/114] I2C: Only register the I2C device for the current
board revision
---
arch/arm/mach-bcm2708/bcm2708.c | 14 ++++++++++++--
1 file changed, 12 insertions(+), 2 deletions(-)
--- a/arch/arm/mach-bcm2708/bcm2708.c
+++ b/arch/arm/mach-bcm2708/bcm2708.c
@@ -93,6 +93,7 @@ static unsigned disk_led_active_low = 1;
static unsigned reboot_part = 0;
static unsigned w1_gpio_pin = W1_GPIO;
static unsigned w1_gpio_pullup = W1_PULLUP;
+static bool vc_i2c_override = false;
static unsigned use_dt = 0;
@@ -862,8 +863,15 @@ void __init bcm2708_init(void)
bcm_register_device(&bcm2835_thermal_device);
bcm_register_device_dt(&bcm2708_spi_device);
- bcm_register_device_dt(&bcm2708_bsc0_device);
- bcm_register_device_dt(&bcm2708_bsc1_device);
+
+ if (vc_i2c_override) {
+ bcm_register_device_dt(&bcm2708_bsc0_device);
+ bcm_register_device_dt(&bcm2708_bsc1_device);
+ } else if ((boardrev & 0xffffff) == 0x2 || (boardrev & 0xffffff) == 0x3) {
+ bcm_register_device_dt(&bcm2708_bsc0_device);
+ } else {
+ bcm_register_device_dt(&bcm2708_bsc1_device);
+ }
#if defined(CONFIG_SND_BCM2708_SOC_I2S) || defined(CONFIG_SND_BCM2708_SOC_I2S_MODULE)
bcm_register_device_dt(&bcm2708_i2s_device);
@@ -1093,3 +1101,5 @@ module_param(disk_led_active_low, uint,
module_param(reboot_part, uint, 0644);
module_param(w1_gpio_pin, uint, 0644);
module_param(w1_gpio_pullup, uint, 0644);
+module_param(vc_i2c_override, bool, 0644);
+MODULE_PARM_DESC(vc_i2c_override, "Allow the use of VC's I2C peripheral.");
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