diff options
Diffstat (limited to 'drivers/ata/ahci_da850.c')
-rw-r--r-- | drivers/ata/ahci_da850.c | 47 |
1 files changed, 19 insertions, 28 deletions
diff --git a/drivers/ata/ahci_da850.c b/drivers/ata/ahci_da850.c index 052c28e250aa..dc8a019b8340 100644 --- a/drivers/ata/ahci_da850.c +++ b/drivers/ata/ahci_da850.c @@ -163,7 +163,6 @@ static int ahci_da850_probe(struct platform_device *pdev) struct ahci_host_priv *hpriv; void __iomem *pwrdn_reg; struct resource *res; - struct clk *clk; u32 mpy; int rc; @@ -172,36 +171,28 @@ static int ahci_da850_probe(struct platform_device *pdev) return PTR_ERR(hpriv); /* - * Internally ahci_platform_get_resources() calls clk_get(dev, NULL) - * when trying to obtain the functional clock. This SATA controller - * uses two clocks for which we specify two connection ids. If we don't - * have the functional clock at this point - call clk_get() again with - * con_id = "fck". + * Internally ahci_platform_get_resources() calls the bulk clocks + * get method or falls back to using a single clk_get_optional(). + * This AHCI SATA controller uses two clocks: functional clock + * with "fck" connection id and external reference clock with + * "refclk" id. If we haven't got all of them re-try the clocks + * getting procedure with the explicitly specified ids. */ - if (!hpriv->clks[0]) { - clk = clk_get(dev, "fck"); - if (IS_ERR(clk)) - return PTR_ERR(clk); - - hpriv->clks[0] = clk; - } - - /* - * The second clock used by ahci-da850 is the external REFCLK. If we - * didn't get it from ahci_platform_get_resources(), let's try to - * specify the con_id in clk_get(). - */ - if (!hpriv->clks[1]) { - clk = clk_get(dev, "refclk"); - if (IS_ERR(clk)) { - dev_err(dev, "unable to obtain the reference clock"); - return -ENODEV; - } - - hpriv->clks[1] = clk; + if (hpriv->n_clks < 2) { + hpriv->clks = devm_kcalloc(dev, 2, sizeof(*hpriv->clks), GFP_KERNEL); + if (!hpriv->clks) + return -ENOMEM; + + hpriv->clks[0].id = "fck"; + hpriv->clks[1].id = "refclk"; + hpriv->n_clks = 2; + + rc = devm_clk_bulk_get(dev, hpriv->n_clks, hpriv->clks); + if (rc) + return rc; } - mpy = ahci_da850_calculate_mpy(clk_get_rate(hpriv->clks[1])); + mpy = ahci_da850_calculate_mpy(clk_get_rate(hpriv->clks[1].clk)); if (mpy == 0) { dev_err(dev, "invalid REFCLK multiplier value: 0x%x", mpy); return -EINVAL; |