diff options
Diffstat (limited to 'target/linux/cns3xxx/files/drivers/i2c/busses/i2c-cns3xxx.c')
| -rw-r--r-- | target/linux/cns3xxx/files/drivers/i2c/busses/i2c-cns3xxx.c | 54 |
1 files changed, 16 insertions, 38 deletions
diff --git a/target/linux/cns3xxx/files/drivers/i2c/busses/i2c-cns3xxx.c b/target/linux/cns3xxx/files/drivers/i2c/busses/i2c-cns3xxx.c index c3fd7c8972..7acff37d26 100644 --- a/target/linux/cns3xxx/files/drivers/i2c/busses/i2c-cns3xxx.c +++ b/target/linux/cns3xxx/files/drivers/i2c/busses/i2c-cns3xxx.c @@ -21,28 +21,23 @@ #include <linux/delay.h> #include <linux/i2c.h> #include <linux/slab.h> -#include <mach/pm.h> -#include <mach/cns3xxx.h> +#include <linux/clk.h> /* * We need the memory map */ - -#define MISC_MEM_MAP_VALUE(reg_offset) (*((uint32_t volatile *)(CNS3XXX_MISC_BASE_VIRT + reg_offset))) -#define MISC_IOCDB_CTRL MISC_MEM_MAP_VALUE(0x020) - -#define I2C_MEM_MAP_ADDR(x) (CNS3XXX_SSP_BASE_VIRT + x) +#define I2C_MEM_MAP_ADDR(x) (i2c->base + x) #define I2C_MEM_MAP_VALUE(x) (*((unsigned int volatile*)I2C_MEM_MAP_ADDR(x))) -#define I2C_CONTROLLER_REG I2C_MEM_MAP_VALUE(0x20) -#define I2C_TIME_OUT_REG I2C_MEM_MAP_VALUE(0x24) -#define I2C_SLAVE_ADDRESS_REG I2C_MEM_MAP_VALUE(0x28) -#define I2C_WRITE_DATA_REG I2C_MEM_MAP_VALUE(0x2C) -#define I2C_READ_DATA_REG I2C_MEM_MAP_VALUE(0x30) -#define I2C_INTERRUPT_STATUS_REG I2C_MEM_MAP_VALUE(0x34) -#define I2C_INTERRUPT_ENABLE_REG I2C_MEM_MAP_VALUE(0x38) -#define I2C_TWI_OUT_DLY_REG I2C_MEM_MAP_VALUE(0x3C) +#define I2C_CONTROLLER_REG I2C_MEM_MAP_VALUE(0x00) +#define I2C_TIME_OUT_REG I2C_MEM_MAP_VALUE(0x04) +#define I2C_SLAVE_ADDRESS_REG I2C_MEM_MAP_VALUE(0x08) +#define I2C_WRITE_DATA_REG I2C_MEM_MAP_VALUE(0x0C) +#define I2C_READ_DATA_REG I2C_MEM_MAP_VALUE(0x10) +#define I2C_INTERRUPT_STATUS_REG I2C_MEM_MAP_VALUE(0x14) +#define I2C_INTERRUPT_ENABLE_REG I2C_MEM_MAP_VALUE(0x18) +#define I2C_TWI_OUT_DLY_REG I2C_MEM_MAP_VALUE(0x1C) #define I2C_BUS_ERROR_FLAG (0x1) #define I2C_ACTION_DONE_FLAG (0x2) @@ -203,24 +198,18 @@ static struct i2c_adapter cns3xxx_i2c_adapter = { static void cns3xxx_i2c_adapter_init(struct cns3xxx_i2c *i2c) { - cns3xxx_pwr_clk_en(1 << PM_CLK_GATE_REG_OFFSET_SPI_PCM_I2C); - cns3xxx_pwr_power_up(1 << PM_CLK_GATE_REG_OFFSET_SPI_PCM_I2C); - cns3xxx_pwr_soft_rst(1 << PM_CLK_GATE_REG_OFFSET_SPI_PCM_I2C); + struct clk *clk; + + clk = devm_clk_get(i2c->dev, "cpu"); + if (WARN_ON(!clk)) + return; /* Disable the I2C */ I2C_CONTROLLER_REG = 0; /* Disabled the I2C */ - //enable SCL and SDA which share pin with GPIOB_PIN_EN(0x18) - //GPIOB[12]: SCL - //GPIOB[13]: SDA - (*(u32*)(CNS3XXX_MISC_BASE_VIRT+0x18)) |= ((1<<12)|(1<<13)); - - MISC_IOCDB_CTRL &= ~0x300; - MISC_IOCDB_CTRL |= 0x300; //21mA... - /* Check the Reg Dump when testing */ I2C_TIME_OUT_REG = - ((((((cns3xxx_cpu_clock()*(1000000/8)) / (2 * CNS3xxx_I2C_CLK)) - + (((((clk_get_rate(clk) / (2 * CNS3xxx_I2C_CLK)) - 1) & 0x3FF) << 8) | (1 << 7) | 0x7F); I2C_TWI_OUT_DLY_REG |= 0x3; @@ -358,20 +347,9 @@ static int cns3xxx_i2c_remove(struct platform_device *pdev) return 0; } -#ifdef CONFIG_PM -#warning "CONFIG_PM defined: suspend and resume not implemented" -#define cns3xxx_i2c_suspend NULL -#define cns3xxx_i2c_resume NULL -#else -#define cns3xxx_i2c_suspend NULL -#define cns3xxx_i2c_resume NULL -#endif - static struct platform_driver cns3xxx_i2c_driver = { .probe = cns3xxx_i2c_probe, .remove = cns3xxx_i2c_remove, - .suspend = cns3xxx_i2c_suspend, - .resume = cns3xxx_i2c_resume, .driver = { .owner = THIS_MODULE, .name = "cns3xxx-i2c", |