diff options
Diffstat (limited to 'drivers/fsi')
| -rw-r--r-- | drivers/fsi/fsi-master-gpio.c | 8 |
1 files changed, 5 insertions, 3 deletions
diff --git a/drivers/fsi/fsi-master-gpio.c b/drivers/fsi/fsi-master-gpio.c index 4295a46780cb..d6508bbad1fb 100644 --- a/drivers/fsi/fsi-master-gpio.c +++ b/drivers/fsi/fsi-master-gpio.c @@ -86,12 +86,15 @@ static void clock_toggle(struct fsi_master_gpio *master, int count) } } -static int sda_in(struct fsi_master_gpio *master) +static int sda_clock_in(struct fsi_master_gpio *master) { int in; ndelay(FSI_GPIO_STD_DLY); + gpiod_set_value(master->gpio_clk, 0); in = gpiod_get_value(master->gpio_data); + ndelay(FSI_GPIO_STD_DLY); + gpiod_set_value(master->gpio_clk, 1); return in ? 1 : 0; } @@ -126,8 +129,7 @@ static void serial_in(struct fsi_master_gpio *master, struct fsi_gpio_msg *msg, set_sda_input(master); for (bit = 0; bit < num_bits; bit++) { - clock_toggle(master, 1); - in_bit = sda_in(master); + in_bit = sda_clock_in(master); msg->msg <<= 1; msg->msg |= ~in_bit & 0x1; /* Data is active low */ } |