X-Git-Url: http://git.onelab.eu/?a=blobdiff_plain;f=arch%2Farm%2Fmach-pnx4008%2Fi2c.c;fp=arch%2Farm%2Fmach-pnx4008%2Fi2c.c;h=6f308827c4fe32382667aa8565a8d019abc32a4f;hb=76828883507a47dae78837ab5dec5a5b4513c667;hp=0000000000000000000000000000000000000000;hpb=64ba3f394c830ec48a1c31b53dcae312c56f1604;p=linux-2.6.git

diff --git a/arch/arm/mach-pnx4008/i2c.c b/arch/arm/mach-pnx4008/i2c.c
new file mode 100644
index 000000000..6f308827c
--- /dev/null
+++ b/arch/arm/mach-pnx4008/i2c.c
@@ -0,0 +1,167 @@
+/*
+ * I2C initialization for PNX4008.
+ *
+ * Author: Vitaly Wool <vitalywool@gmail.com>
+ *
+ * 2005-2006 (c) MontaVista Software, Inc. This file is licensed under
+ * the terms of the GNU General Public License version 2. This program
+ * is licensed "as is" without any warranty of any kind, whether express
+ * or implied.
+ */
+
+#include <linux/clk.h>
+#include <linux/i2c.h>
+#include <linux/i2c-pnx.h>
+#include <linux/platform_device.h>
+#include <linux/err.h>
+#include <asm/arch/platform.h>
+#include <asm/arch/i2c.h>
+
+static int set_clock_run(struct platform_device *pdev)
+{
+	struct clk *clk;
+	char name[10];
+	int retval = 0;
+
+	snprintf(name, 10, "i2c%d_ck", pdev->id);
+	clk = clk_get(&pdev->dev, name);
+	if (!IS_ERR(clk)) {
+		clk_set_rate(clk, 1);
+		clk_put(clk);
+	} else
+		retval = -ENOENT;
+
+	return retval;
+}
+
+static int set_clock_stop(struct platform_device *pdev)
+{
+	struct clk *clk;
+	char name[10];
+	int retval = 0;
+
+	snprintf(name, 10, "i2c%d_ck", pdev->id);
+	clk = clk_get(&pdev->dev, name);
+	if (!IS_ERR(clk)) {
+		clk_set_rate(clk, 0);
+		clk_put(clk);
+	} else
+		retval = -ENOENT;
+
+	return retval;
+}
+
+static int i2c_pnx_suspend(struct platform_device *pdev, pm_message_t state)
+{
+	int retval = 0;
+#ifdef CONFIG_PM
+	retval = set_clock_run(pdev);
+#endif
+	return retval;
+}
+
+static int i2c_pnx_resume(struct platform_device *pdev)
+{
+	int retval = 0;
+#ifdef CONFIG_PM
+	retval = set_clock_run(pdev);
+#endif
+	return retval;
+}
+
+static u32 calculate_input_freq(struct platform_device *pdev)
+{
+	return HCLK_MHZ;
+}
+
+
+static struct i2c_pnx_algo_data pnx_algo_data0 = {
+	.base = PNX4008_I2C1_BASE,
+	.irq = I2C_1_INT,
+};
+
+static struct i2c_pnx_algo_data pnx_algo_data1 = {
+	.base = PNX4008_I2C2_BASE,
+	.irq = I2C_2_INT,
+};
+
+static struct i2c_pnx_algo_data pnx_algo_data2 = {
+	.base = (PNX4008_USB_CONFIG_BASE + 0x300),
+	.irq = USB_I2C_INT,
+};
+
+static struct i2c_adapter pnx_adapter0 = {
+	.name = I2C_CHIP_NAME "0",
+	.algo_data = &pnx_algo_data0,
+};
+static struct i2c_adapter pnx_adapter1 = {
+	.name = I2C_CHIP_NAME "1",
+	.algo_data = &pnx_algo_data1,
+};
+
+static struct i2c_adapter pnx_adapter2 = {
+	.name = "USB-I2C",
+	.algo_data = &pnx_algo_data2,
+};
+
+static struct i2c_pnx_data i2c0_data = {
+	.suspend = i2c_pnx_suspend,
+	.resume = i2c_pnx_resume,
+	.calculate_input_freq = calculate_input_freq,
+	.set_clock_run = set_clock_run,
+	.set_clock_stop = set_clock_stop,
+	.adapter = &pnx_adapter0,
+};
+
+static struct i2c_pnx_data i2c1_data = {
+	.suspend = i2c_pnx_suspend,
+	.resume = i2c_pnx_resume,
+	.calculate_input_freq = calculate_input_freq,
+	.set_clock_run = set_clock_run,
+	.set_clock_stop = set_clock_stop,
+	.adapter = &pnx_adapter1,
+};
+
+static struct i2c_pnx_data i2c2_data = {
+	.suspend = i2c_pnx_suspend,
+	.resume = i2c_pnx_resume,
+	.calculate_input_freq = calculate_input_freq,
+	.set_clock_run = set_clock_run,
+	.set_clock_stop = set_clock_stop,
+	.adapter = &pnx_adapter2,
+};
+
+static struct platform_device i2c0_device = {
+	.name = "pnx-i2c",
+	.id = 0,
+	.dev = {
+		.platform_data = &i2c0_data,
+	},
+};
+
+static struct platform_device i2c1_device = {
+	.name = "pnx-i2c",
+	.id = 1,
+	.dev = {
+		.platform_data = &i2c1_data,
+	},
+};
+
+static struct platform_device i2c2_device = {
+	.name = "pnx-i2c",
+	.id = 2,
+	.dev = {
+		.platform_data = &i2c2_data,
+	},
+};
+
+static struct platform_device *devices[] __initdata = {
+	&i2c0_device,
+	&i2c1_device,
+	&i2c2_device,
+};
+
+void __init pnx4008_register_i2c_devices(void)
+{
+	platform_add_devices(devices, ARRAY_SIZE(devices));
+}