diff options
Diffstat (limited to 'drivers/nvmem')
| -rw-r--r-- | drivers/nvmem/qfprom.c | 25 |
1 files changed, 25 insertions, 0 deletions
diff --git a/drivers/nvmem/qfprom.c b/drivers/nvmem/qfprom.c index b0ca4c626466..c500d6235bf6 100644 --- a/drivers/nvmem/qfprom.c +++ b/drivers/nvmem/qfprom.c @@ -12,6 +12,8 @@ #include <linux/mod_devicetable.h> #include <linux/nvmem-provider.h> #include <linux/platform_device.h> +#include <linux/pm_domain.h> +#include <linux/pm_runtime.h> #include <linux/property.h> #include <linux/regulator/consumer.h> @@ -142,6 +144,9 @@ static void qfprom_disable_fuse_blowing(const struct qfprom_priv *priv, writel(old->timer_val, priv->qfpconf + QFPROM_BLOW_TIMER_OFFSET); writel(old->accel_val, priv->qfpconf + QFPROM_ACCEL_OFFSET); + dev_pm_genpd_set_performance_state(priv->dev, 0); + pm_runtime_put(priv->dev); + /* * This may be a shared rail and may be able to run at a lower rate * when we're not blowing fuses. At the moment, the regulator framework @@ -212,6 +217,14 @@ static int qfprom_enable_fuse_blowing(const struct qfprom_priv *priv, goto err_clk_rate_set; } + ret = pm_runtime_get_sync(priv->dev); + if (ret < 0) { + pm_runtime_put_noidle(priv->dev); + dev_err(priv->dev, "Failed to enable power-domain\n"); + goto err_reg_enable; + } + dev_pm_genpd_set_performance_state(priv->dev, INT_MAX); + old->timer_val = readl(priv->qfpconf + QFPROM_BLOW_TIMER_OFFSET); old->accel_val = readl(priv->qfpconf + QFPROM_ACCEL_OFFSET); writel(priv->soc_data->qfprom_blow_timer_value, @@ -221,6 +234,8 @@ static int qfprom_enable_fuse_blowing(const struct qfprom_priv *priv, return 0; +err_reg_enable: + regulator_disable(priv->vcc); err_clk_rate_set: clk_set_rate(priv->secclk, old->clk_rate); err_clk_prepared: @@ -320,6 +335,11 @@ static int qfprom_reg_read(void *context, return 0; } +static void qfprom_runtime_disable(void *data) +{ + pm_runtime_disable(data); +} + static const struct qfprom_soc_data qfprom_7_8_data = { .accel_value = 0xD10, .qfprom_blow_timer_value = 25, @@ -420,6 +440,11 @@ static int qfprom_probe(struct platform_device *pdev) econfig.reg_write = qfprom_reg_write; } + pm_runtime_enable(dev); + ret = devm_add_action_or_reset(dev, qfprom_runtime_disable, dev); + if (ret) + return ret; + nvmem = devm_nvmem_register(dev, &econfig); return PTR_ERR_OR_ZERO(nvmem); |