diff options
| -rw-r--r-- | fpc1020_platform_tee.c | 37 |
1 files changed, 37 insertions, 0 deletions
diff --git a/fpc1020_platform_tee.c b/fpc1020_platform_tee.c index a7a8338..43e631d 100644 --- a/fpc1020_platform_tee.c +++ b/fpc1020_platform_tee.c @@ -48,6 +48,8 @@ #define NUM_PARAMS_REG_ENABLE_SET 2 +const char *rst_gpio_power_down_state = "rst,power_down"; + struct vreg_config { char *name; unsigned long vmin; @@ -72,6 +74,8 @@ struct fpc1020_data { struct mutex lock; /* To set/get exported values in sysfs */ bool prepared; atomic_t wakeup_enabled; /* Used both in ISR and non-ISR */ + struct pinctrl *rst_pinctrl; + struct pinctrl_state *rst_state; }; static int vreg_setup(struct fpc1020_data *fpc1020, const char *name, @@ -466,6 +470,34 @@ static int fpc1020_config_gpio(struct fpc1020_data *fpc1020) } +static int config_rst_power_down(struct fpc1020_data *fpc_data) { + + struct device *dev = fpc_data->dev; + int result = 0; + + fpc_data->rst_pinctrl = devm_pinctrl_get(dev); + if (IS_ERR(fpc_data->rst_pinctrl)) { + dev_err(dev, "%s: Can't get pinctrl\n",__func__); + return -1; + } + + fpc_data->rst_state = pinctrl_lookup_state(fpc_data->rst_pinctrl, rst_gpio_power_down_state); + if (IS_ERR_OR_NULL(fpc_data->rst_state)) { + dev_err(dev, "%s: Failed to lookup reset lower power state\n",__func__); + return -1; + } + + result = pinctrl_select_state(fpc_data->rst_pinctrl, fpc_data->rst_state); + if (result) { + dev_err(dev, "%s: Can not set %s state\n",__func__, rst_gpio_power_down_state); + return -1; + } + + dev_info(dev, "%s: finish\n",__func__); + return 0; +} + + static int fpc1020_probe(struct platform_device *pdev) { struct device *dev = &pdev->dev; @@ -491,6 +523,11 @@ static int fpc1020_probe(struct platform_device *pdev) goto exit; } + // Config reset lower power state + rc = config_rst_power_down(fpc1020); + if (rc) + goto exit; + // Request IRQ and Reset pin GPIO rc = fpc1020_request_named_gpio(fpc1020, "fpc,gpio_irq", &fpc1020->irq_gpio); |