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/*
* arch/arm/mach-tegra/p852/board-p852-i2c.c
*
* Copyright (c) 2010-2011, NVIDIA Corporation.
*
* This software is licensed under the terms of the GNU General Public
* License version 2, as published by the Free Software Foundation, and
* may be copied, distributed, and modified under those terms.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
*/
#include <linux/resource.h>
#include <linux/platform_device.h>
#include <linux/delay.h>
#include <linux/gpio.h>
#include <asm/mach-types.h>
#include <mach/irqs.h>
#include <mach/iomap.h>
#include <linux/i2c.h>
#include <mach/pinmux.h>
#include <asm/mach-types.h>
#include "board-p852.h"
static struct resource i2c_resource1[] = {
[0] = {
.start = INT_I2C,
.end = INT_I2C,
.flags = IORESOURCE_IRQ,
},
[1] = {
.start = TEGRA_I2C_BASE,
.end = TEGRA_I2C_BASE + TEGRA_I2C_SIZE - 1,
.flags = IORESOURCE_MEM,
},
};
static struct resource i2c_resource2[] = {
[0] = {
.start = INT_I2C2,
.end = INT_I2C2,
.flags = IORESOURCE_IRQ,
},
[1] = {
.start = TEGRA_I2C2_BASE,
.end = TEGRA_I2C2_BASE + TEGRA_I2C2_SIZE - 1,
.flags = IORESOURCE_MEM,
},
};
static struct resource i2c_resource3[] = {
[0] = {
.start = INT_I2C3,
.end = INT_I2C3,
.flags = IORESOURCE_IRQ,
},
[1] = {
.start = TEGRA_I2C3_BASE,
.end = TEGRA_I2C3_BASE + TEGRA_I2C3_SIZE - 1,
.flags = IORESOURCE_MEM,
},
};
static struct resource i2c_resource4[] = {
[0] = {
.start = INT_DVC,
.end = INT_DVC,
.flags = IORESOURCE_IRQ,
},
[1] = {
.start = TEGRA_DVC_BASE,
.end = TEGRA_DVC_BASE + TEGRA_DVC_SIZE - 1,
.flags = IORESOURCE_MEM,
},
};
static const struct tegra_pingroup_config i2c2_ddc = {
.pingroup = TEGRA_PINGROUP_DDC,
.func = TEGRA_MUX_I2C2,
};
static const struct tegra_pingroup_config i2c_i2cp = {
.pingroup = TEGRA_PINGROUP_I2CP,
.func = TEGRA_MUX_I2C,
};
static struct tegra_i2c_platform_data p852_i2c1_platform_data = {
.adapter_nr = 0,
.bus_count = 1,
.bus_clk_rate = {400000},
};
static struct tegra_i2c_platform_data p852_i2c2_platform_data = {
.adapter_nr = 1,
.bus_count = 1,
.bus_clk_rate = {100000},
.bus_mux = {&i2c2_ddc},
.bus_mux_len = {1},
};
static struct tegra_i2c_platform_data p852_i2c3_platform_data = {
.adapter_nr = 2,
.bus_count = 1,
.bus_clk_rate = {400000},
};
static struct tegra_i2c_platform_data p852_dvc_platform_data = {
.adapter_nr = 3,
.bus_count = 1,
.bus_clk_rate = {100000},
.bus_mux = {&i2c_i2cp},
.bus_mux_len = {1},
.is_dvc = true,
};
struct platform_device tegra_i2c_device[] = {
{
.name = "tegra-i2c",
.id = 0,
.resource = i2c_resource1,
.num_resources = ARRAY_SIZE(i2c_resource1),
.dev = {
.platform_data = &p852_i2c1_platform_data,
},
},
{
.name = "tegra-i2c",
.id = 1,
.resource = i2c_resource2,
.num_resources = ARRAY_SIZE(i2c_resource2),
.dev = {
.platform_data = &p852_i2c2_platform_data,
},
},
{
.name = "tegra-i2c",
.id = 2,
.resource = i2c_resource3,
.num_resources = ARRAY_SIZE(i2c_resource3),
.dev = {
.platform_data = &p852_i2c3_platform_data,
},
},
{
.name = "tegra-i2c",
.id = 3,
.resource = i2c_resource4,
.num_resources = ARRAY_SIZE(i2c_resource4),
.dev = {
.platform_data = &p852_dvc_platform_data,
},
}
};
void __init p852_i2c_set_default_clock(int adapter, unsigned long clock)
{
if (adapter >= 0 && adapter < ARRAY_SIZE(tegra_i2c_device))
((struct tegra_i2c_platform_data *)tegra_i2c_device[adapter].
dev.platform_data)->bus_clk_rate[0] = clock;
}
void __init p852_i2c_init(void)
{
int i;
unsigned int i2c_config = 0;
if (p852_sku_peripherals & P852_SKU_I2C_ENABLE) {
for (i = 0; i < P852_MAX_I2C; i++) {
i2c_config =
(p852_i2c_peripherals >> (P852_I2C_SHIFT * i));
if (i2c_config & P852_I2C_ENABLE)
platform_device_register(&tegra_i2c_device[i]);
}
}
}
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