diff options
| -rw-r--r-- | drivers/ata/libahci_platform.c | 24 | ||||
| -rw-r--r-- | include/linux/ahci_platform.h | 3 |
2 files changed, 27 insertions, 0 deletions
diff --git a/drivers/ata/libahci_platform.c b/drivers/ata/libahci_platform.c index 86d156075336..ddf17e2d266c 100644 --- a/drivers/ata/libahci_platform.c +++ b/drivers/ata/libahci_platform.c @@ -94,6 +94,30 @@ void ahci_platform_disable_phys(struct ahci_host_priv *hpriv) EXPORT_SYMBOL_GPL(ahci_platform_disable_phys); /** + * ahci_platform_find_clk - Find platform clock + * @hpriv: host private area to store config values + * @con_id: clock connection ID + * + * This function returns a pointer to the clock descriptor of the clock with + * the passed ID. + * + * RETURNS: + * Pointer to the clock descriptor on success otherwise NULL + */ +struct clk *ahci_platform_find_clk(struct ahci_host_priv *hpriv, const char *con_id) +{ + int i; + + for (i = 0; i < hpriv->n_clks; i++) { + if (!strcmp(hpriv->clks[i].id, con_id)) + return hpriv->clks[i].clk; + } + + return NULL; +} +EXPORT_SYMBOL_GPL(ahci_platform_find_clk); + +/** * ahci_platform_enable_clks - Enable platform clocks * @hpriv: host private area to store config values * diff --git a/include/linux/ahci_platform.h b/include/linux/ahci_platform.h index 6d7dd472d370..17fa26215292 100644 --- a/include/linux/ahci_platform.h +++ b/include/linux/ahci_platform.h @@ -13,6 +13,7 @@ #include <linux/compiler.h> +struct clk; struct device; struct ata_port_info; struct ahci_host_priv; @@ -21,6 +22,8 @@ struct scsi_host_template; int ahci_platform_enable_phys(struct ahci_host_priv *hpriv); void ahci_platform_disable_phys(struct ahci_host_priv *hpriv); +struct clk *ahci_platform_find_clk(struct ahci_host_priv *hpriv, + const char *con_id); int ahci_platform_enable_clks(struct ahci_host_priv *hpriv); void ahci_platform_disable_clks(struct ahci_host_priv *hpriv); int ahci_platform_deassert_rsts(struct ahci_host_priv *hpriv); |