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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -1,2 +1,2 @@ | ||
| --- | ||
| refs/heads/master: 18b36c7119aa868fdfae6855b86824db238e5ebc | ||
| refs/heads/master: 775ba7ad491a154f99871fe603f03366e84ae159 |
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -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)); | ||
| } |
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