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恢复控制器的cs控制

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root
2010-07-26 22:00:25 +08:00
parent f2d7793f15
commit e1fd39597e
1 changed files with 11 additions and 10 deletions
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21
drivers/spi/rk2818_spim.c
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@@ -185,14 +185,15 @@ static void flush(struct rk2818_spi *dws)
static void null_cs_control(u32 command)
{
if(command == 2)
gpio_direction_output(RK2818_PIN_PB0,GPIO_LOW);
else if(command == 1)
gpio_direction_output(RK2818_PIN_PB4,GPIO_LOW);
else{
gpio_direction_output(RK2818_PIN_PB0,GPIO_HIGH);
gpio_direction_output(RK2818_PIN_PB4,GPIO_HIGH);
}
//printk("null_cs_control [%d]\n", command);
if(command == 2)
gpio_direction_output(RK2818_PIN_PB0,GPIO_LOW);
else if(command == 1)
gpio_direction_output(RK2818_PIN_PB4,GPIO_LOW);
else{
gpio_direction_output(RK2818_PIN_PB0,GPIO_HIGH);
gpio_direction_output(RK2818_PIN_PB4,GPIO_HIGH);
}
}
static int null_writer(struct rk2818_spi *dws)
@@ -436,7 +437,7 @@ static void spi_chip_sel(struct rk2818_spi *dws, u16 cs)
if (dws->cs_control){
dws->cs_control(cs+1);
}
//rk2818_writel(dws, SPIM_SER, 1 << cs);
rk2818_writel(dws, SPIM_SER, 1 << cs);
}
static void pump_transfers(unsigned long data)
@@ -655,7 +656,7 @@ static void pump_messages(struct work_struct *work)
struct spi_transfer,
transfer_list);
dws->cur_chip = spi_get_ctldata(dws->cur_msg->spi);
dws->prev_chip = NULL; //ÿ<><C3BF>pump messageʱǿ<CAB1>Ƹ<EFBFBD><C6B8><EFBFBD>cs dxj
//dws->prev_chip = NULL; //ÿ<><C3BF>pump messageʱǿ<CAB1>Ƹ<EFBFBD><C6B8><EFBFBD>cs dxj
/* Mark as busy and launch transfers */
tasklet_schedule(&dws->pump_transfers);