struct mmc_pwrseq *mmc_pwrseq_simple_alloc(struct mmc_host *host,
struct device *dev)
{
struct mmc_pwrseq_simple *pwrseq;
int ret = 0;
pwrseq = kzalloc(sizeof(*pwrseq), GFP_KERNEL);
if (!pwrseq)
return ERR_PTR(-ENOMEM);
pwrseq->ext_clk = clk_get(dev, "ext_clock");
if (IS_ERR(pwrseq->ext_clk) &&
PTR_ERR(pwrseq->ext_clk) != -ENOENT) {
ret = PTR_ERR(pwrseq->ext_clk);
goto free;
}
pwrseq->reset_gpios = gpiod_get_array(dev, "reset", GPIOD_OUT_HIGH);
if (IS_ERR(pwrseq->reset_gpios) &&
PTR_ERR(pwrseq->reset_gpios) != -ENOENT &&
PTR_ERR(pwrseq->reset_gpios) != -ENOSYS) {
ret = PTR_ERR(pwrseq->reset_gpios);
goto clk_put;
}
pwrseq->pwrseq.ops = &mmc_pwrseq_simple_ops;
return &pwrseq->pwrseq;
clk_put:
if (!IS_ERR(pwrseq->ext_clk))
clk_put(pwrseq->ext_clk);
free:
kfree(pwrseq);
return ERR_PTR(ret);
}
int mmc_pwrseq_simple_alloc(struct mmc_host *host)
{
struct mmc_pwrseq_simple *pwrseq = to_pwrseq_simple(host->pwrseq);
struct device *dev = host->pwrseq->dev;
int i, ret = 0;
pwrseq->ext_clk = clk_get(dev, "ext_clock");
if (IS_ERR(pwrseq->ext_clk) &&
PTR_ERR(pwrseq->ext_clk) != -ENOENT) {
return PTR_ERR(pwrseq->ext_clk);
}
pwrseq->reset_gpios = gpiod_get_array(dev, "reset", GPIOD_OUT_HIGH);
if (IS_ERR(pwrseq->reset_gpios)) {
ret = PTR_ERR(pwrseq->reset_gpios);
clk_put(pwrseq->ext_clk);
return ret;
}
return 0;
}
/**
* devm_gpiod_get_array - Resource-managed gpiod_get_array()
* @dev: GPIO consumer
* @con_id: function within the GPIO consumer
* @flags: optional GPIO initialization flags
*
* Managed gpiod_get_array(). GPIO descriptors returned from this function are
* automatically disposed on driver detach. See gpiod_get_array() for detailed
* information about behavior and return values.
*/
struct gpio_descs *__must_check devm_gpiod_get_array(struct device *dev,
const char *con_id,
enum gpiod_flags flags)
{
struct gpio_descs **dr;
struct gpio_descs *descs;
dr = devres_alloc(devm_gpiod_release_array,
sizeof(struct gpio_descs *), GFP_KERNEL);
if (!dr)
return ERR_PTR(-ENOMEM);
descs = gpiod_get_array(dev, con_id, flags);
if (IS_ERR(descs)) {
devres_free(dr);
return descs;
}
*dr = descs;
devres_add(dev, dr);
return descs;
}
