diff options
| -rw-r--r-- | drivers/input/keyboard/sh_keysc.c | 69 |
1 files changed, 43 insertions, 26 deletions
diff --git a/drivers/input/keyboard/sh_keysc.c b/drivers/input/keyboard/sh_keysc.c index efcc3a3b9b5..6218b2f0249 100644 --- a/drivers/input/keyboard/sh_keysc.c +++ b/drivers/input/keyboard/sh_keysc.c @@ -22,14 +22,6 @@ #include <linux/clk.h> #include <linux/io.h> -#define KYCR1_OFFS 0x00 -#define KYCR2_OFFS 0x04 -#define KYINDR_OFFS 0x08 -#define KYOUTDR_OFFS 0x0c - -#define KYCR2_IRQ_LEVEL 0x10 -#define KYCR2_IRQ_DISABLED 0x00 - static const struct { unsigned char kymd, keyout, keyin; } sh_keysc_mode[] = { @@ -48,6 +40,37 @@ struct sh_keysc_priv { struct sh_keysc_info pdata; }; +#define KYCR1 0 +#define KYCR2 1 +#define KYINDR 2 +#define KYOUTDR 3 + +#define KYCR2_IRQ_LEVEL 0x10 +#define KYCR2_IRQ_DISABLED 0x00 + +static unsigned long sh_keysc_read(struct sh_keysc_priv *p, int reg_nr) +{ + return ioread16(p->iomem_base + (reg_nr << 2)); +} + +static void sh_keysc_write(struct sh_keysc_priv *p, int reg_nr, + unsigned long value) +{ + iowrite16(value, p->iomem_base + (reg_nr << 2)); +} + +static void sh_keysc_level_mode(struct sh_keysc_priv *p, + unsigned long keys_set) +{ + struct sh_keysc_info *pdata = &p->pdata; + + sh_keysc_write(p, KYOUTDR, 0); + sh_keysc_write(p, KYCR2, KYCR2_IRQ_LEVEL | (keys_set << 8)); + + if (pdata->kycr2_delay) + udelay(pdata->kycr2_delay); +} + static irqreturn_t sh_keysc_isr(int irq, void *dev_id) { struct platform_device *pdev = dev_id; @@ -66,24 +89,19 @@ static irqreturn_t sh_keysc_isr(int irq, void *dev_id) keys = 0; keyin_set = 0; - iowrite16(KYCR2_IRQ_DISABLED, priv->iomem_base + KYCR2_OFFS); + sh_keysc_write(priv, KYCR2, KYCR2_IRQ_DISABLED); for (i = 0; i < sh_keysc_mode[pdata->mode].keyout; i++) { - iowrite16(0xfff ^ (3 << (i * 2)), - priv->iomem_base + KYOUTDR_OFFS); + sh_keysc_write(priv, KYOUTDR, 0xfff ^ (3 << (i * 2))); udelay(pdata->delay); - tmp = ioread16(priv->iomem_base + KYINDR_OFFS); + tmp = sh_keysc_read(priv, KYINDR); + keys |= tmp << (sh_keysc_mode[pdata->mode].keyin * i); tmp ^= (1 << sh_keysc_mode[pdata->mode].keyin) - 1; keyin_set |= tmp; } - iowrite16(0, priv->iomem_base + KYOUTDR_OFFS); - iowrite16(KYCR2_IRQ_LEVEL | (keyin_set << 8), - priv->iomem_base + KYCR2_OFFS); - - if (pdata->kycr2_delay) - udelay(pdata->kycr2_delay); + sh_keysc_level_mode(priv, keyin_set); keys ^= ~0; keys &= (1 << (sh_keysc_mode[pdata->mode].keyin * @@ -93,7 +111,7 @@ static irqreturn_t sh_keysc_isr(int irq, void *dev_id) dev_dbg(&pdev->dev, "keys 0x%08lx\n", keys); - } while (ioread16(priv->iomem_base + KYCR2_OFFS) & 0x01); + } while (sh_keysc_read(priv, KYCR2) & 0x01); dev_dbg(&pdev->dev, "last_keys 0x%08lx keys0 0x%08lx keys1 0x%08lx\n", priv->last_keys, keys0, keys1); @@ -220,10 +238,9 @@ static int __devinit sh_keysc_probe(struct platform_device *pdev) clk_enable(priv->clk); - iowrite16((sh_keysc_mode[pdata->mode].kymd << 8) | - pdata->scan_timing, priv->iomem_base + KYCR1_OFFS); - iowrite16(0, priv->iomem_base + KYOUTDR_OFFS); - iowrite16(KYCR2_IRQ_LEVEL, priv->iomem_base + KYCR2_OFFS); + sh_keysc_write(priv, KYCR1, (sh_keysc_mode[pdata->mode].kymd << 8) | + pdata->scan_timing); + sh_keysc_level_mode(priv, 0); device_init_wakeup(&pdev->dev, 1); @@ -248,7 +265,7 @@ static int __devexit sh_keysc_remove(struct platform_device *pdev) { struct sh_keysc_priv *priv = platform_get_drvdata(pdev); - iowrite16(KYCR2_IRQ_DISABLED, priv->iomem_base + KYCR2_OFFS); + sh_keysc_write(priv, KYCR2, KYCR2_IRQ_DISABLED); input_unregister_device(priv->input); free_irq(platform_get_irq(pdev, 0), pdev); @@ -270,7 +287,7 @@ static int sh_keysc_suspend(struct device *dev) int irq = platform_get_irq(pdev, 0); unsigned short value; - value = ioread16(priv->iomem_base + KYCR1_OFFS); + value = sh_keysc_read(priv, KYCR1); if (device_may_wakeup(dev)) { value |= 0x80; @@ -279,7 +296,7 @@ static int sh_keysc_suspend(struct device *dev) value &= ~0x80; } - iowrite16(value, priv->iomem_base + KYCR1_OFFS); + sh_keysc_write(priv, KYCR1, value); return 0; } |