1 files changed, 180 insertions, 0 deletions

diff --git a/arch/arm/mach-tegra/p852/board-p852-i2c.c b/arch/arm/mach-tegra/p852/board-p852-i2c.c
new file mode 100644
index 00000000000..041ec252b6c
--- /dev/null
+++ b/arch/arm/mach-tegra/p852/board-p852-i2c.c
@@ -0,0 +1,180 @@
+/*
+ * arch/arm/mach-tegra/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]);
+                }
+        }
+}