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drivers: led_strip: ws2812_gpio: Adapt to clock using onoff

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Adapted to use onoff service for clock control

Signed-off-by: Krzysztof Chruscinski <krzysztof.chruscinski@nordicsemi.no>
This commit is contained in:
Krzysztof Chruscinski 2020-02-13 14:13:36 +01:00 committed by Carles Cufí
parent 4883a36be2
commit e82419074c
1 changed files with 13 additions and 12 deletions
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25
drivers/led_strip/ws2812_gpio.c
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@ -24,7 +24,6 @@ LOG_MODULE_REGISTER(ws2812_gpio);
struct ws2812_gpio_data {
struct device *gpio;
struct device *clk;
};
struct ws2812_gpio_cfg {
@ -103,15 +102,22 @@ static int send_buf(struct device *dev, uint8_t *buf, size_t len)
{
volatile uint32_t *base = (uint32_t *)&NRF_GPIO->OUTSET;
const uint32_t val = BIT(dev_cfg(dev)->pin);
struct device *clk = dev_data(dev)->clk;
struct onoff_manager *mgr =
z_nrf_clock_control_get_onoff(CLOCK_CONTROL_NRF_SUBSYS_HF);
struct onoff_client cli;
unsigned int key;
int rc;
rc = clock_control_on(clk, CLOCK_CONTROL_NRF_SUBSYS_HF);
if (rc) {
sys_notify_init_spinwait(&cli.notify);
rc = onoff_request(mgr, &cli);
if (rc < 0) {
return rc;
}
while (sys_notify_fetch_result(&cli.notify, &rc)) {
/* pend until clock is up and running */
}
key = irq_lock();
while (len--) {
@ -140,7 +146,9 @@ static int send_buf(struct device *dev, uint8_t *buf, size_t len)
irq_unlock(key);
rc = clock_control_off(clk, CLOCK_CONTROL_NRF_SUBSYS_HF);
rc = onoff_release(mgr);
/* Returns non-negative value on success. Cap to 0 as API states. */
rc = MIN(rc, 0);
return rc;
}
@ -213,13 +221,6 @@ static const struct led_strip_driver_api ws2812_gpio_api = {
return -ENODEV; \
} \
\
data->clk = device_get_binding(WS2812_GPIO_CLK(idx)); \
if (!data->clk) { \
LOG_ERR("Unable to find clock %s", \
WS2812_GPIO_CLK(idx)); \
return -ENODEV; \
} \
\
return gpio_pin_configure(data->gpio, \
WS2812_GPIO_PIN(idx), \
WS2812_GPIO_FLAGS(idx) | \