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MIPS: Alchemy: DB1300: Add touch penirq support

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wire up the WM9713 pendown irq support.

Signed-off-by: Manuel Lauss <manuel.lauss@gmail.com>
Cc: Linux-MIPS <linux-mips@linux-mips.org>
Patchwork: https://patchwork.linux-mips.org/patch/7563/
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
This commit is contained in:
Manuel Lauss 2014-08-20 21:36:33 +02:00 committed by Ralf Baechle
parent c02a505e5a
commit c64bb5f0c2
1 changed files with 44 additions and 0 deletions
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44
arch/mips/alchemy/devboards/db1300.c
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@ -21,6 +21,7 @@
#include <linux/mtd/partitions.h>
#include <linux/platform_device.h>
#include <linux/smsc911x.h>
#include <linux/wm97xx.h>
#include <asm/mach-au1x00/au1000.h>
#include <asm/mach-au1x00/au1100_mmc.h>
@ -711,6 +712,46 @@ static struct platform_device db1300_lcd_dev = {
/**********************************************************************/
static void db1300_wm97xx_irqen(struct wm97xx *wm, int enable)
{
if (enable)
enable_irq(DB1300_AC97_PEN_INT);
else
disable_irq_nosync(DB1300_AC97_PEN_INT);
}
static struct wm97xx_mach_ops db1300_wm97xx_ops = {
.irq_enable = db1300_wm97xx_irqen,
.irq_gpio = WM97XX_GPIO_3,
};
static int db1300_wm97xx_probe(struct platform_device *pdev)
{
struct wm97xx *wm = platform_get_drvdata(pdev);
/* external pendown indicator */
wm97xx_config_gpio(wm, WM97XX_GPIO_13, WM97XX_GPIO_IN,
WM97XX_GPIO_POL_LOW, WM97XX_GPIO_STICKY,
WM97XX_GPIO_WAKE);
/* internal "virtual" pendown gpio */
wm97xx_config_gpio(wm, WM97XX_GPIO_3, WM97XX_GPIO_OUT,
WM97XX_GPIO_POL_LOW, WM97XX_GPIO_NOTSTICKY,
WM97XX_GPIO_NOWAKE);
wm->pen_irq = DB1300_AC97_PEN_INT;
return wm97xx_register_mach_ops(wm, &db1300_wm97xx_ops);
}
static struct platform_driver db1300_wm97xx_driver = {
.driver.name = "wm97xx-touch",
.driver.owner = THIS_MODULE,
.probe = db1300_wm97xx_probe,
};
/**********************************************************************/
static struct platform_device *db1300_dev[] __initdata = {
&db1300_eth_dev,
&db1300_i2c_dev,
@ -755,6 +796,9 @@ int __init db1300_dev_setup(void)
i2c_register_board_info(0, db1300_i2c_devs,
ARRAY_SIZE(db1300_i2c_devs));
if (platform_driver_register(&db1300_wm97xx_driver))
pr_warn("DB1300: failed to init touch pen irq support!\n");
/* Audio PSC clock is supplied by codecs (PSC1, 2) */
__raw_writel(PSC_SEL_CLK_SERCLK,
(void __iomem *)KSEG1ADDR(AU1300_PSC1_PHYS_ADDR) + PSC_SEL_OFFSET);