diff options
Diffstat (limited to 'drivers/ata')
| -rw-r--r-- | drivers/ata/sata_gemini.c | 35 |
1 files changed, 35 insertions, 0 deletions
diff --git a/drivers/ata/sata_gemini.c b/drivers/ata/sata_gemini.c index 071e49971f6d..46950e0267e0 100644 --- a/drivers/ata/sata_gemini.c +++ b/drivers/ata/sata_gemini.c @@ -15,6 +15,7 @@ #include <linux/of_device.h> #include <linux/clk.h> #include <linux/io.h> +#include <linux/pinctrl/consumer.h> #include "sata_gemini.h" #define DRV_NAME "gemini_sata_bridge" @@ -287,6 +288,29 @@ static int gemini_sata_bridge_init(struct sata_gemini *sg) return 0; } +static int gemini_setup_ide_pins(struct device *dev) +{ + struct pinctrl *p; + struct pinctrl_state *ide_state; + int ret; + + p = devm_pinctrl_get(dev); + if (IS_ERR(p)) + return PTR_ERR(p); + + ide_state = pinctrl_lookup_state(p, "ide"); + if (IS_ERR(ide_state)) + return PTR_ERR(ide_state); + + ret = pinctrl_select_state(p, ide_state); + if (ret) { + dev_err(dev, "could not select IDE state\n"); + return ret; + } + + return 0; +} + static int gemini_sata_probe(struct platform_device *pdev) { struct device *dev = &pdev->dev; @@ -355,6 +379,17 @@ static int gemini_sata_probe(struct platform_device *pdev) goto out_unprep_clk; } + /* + * Route out the IDE pins if desired. + * This is done by looking up a special pin control state called + * "ide" that will route out the IDE pins. + */ + if (sg->ide_pins) { + ret = gemini_setup_ide_pins(dev); + if (ret) + return ret; + } + dev_info(dev, "set up the Gemini IDE/SATA nexus\n"); platform_set_drvdata(pdev, sg); sg_singleton = sg; |