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authorManuel Lauss <manuel.lauss@gmail.com>2014-08-20 21:36:33 +0200
committerRalf Baechle <ralf@linux-mips.org>2014-09-22 13:35:47 +0200
commitc64bb5f0c26f6ea791270852217b7cb28553ba76 (patch)
treea553e2b23cff0ea8d4bf256c7417054db6cb781a /arch
parentc02a505e5a7787ee7aa871152ba571e6c1d1dc62 (diff)
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MIPS: Alchemy: DB1300: Add touch penirq support
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>
Diffstat (limited to 'arch')
-rw-r--r--arch/mips/alchemy/devboards/db1300.c44
1 files changed, 44 insertions, 0 deletions
diff --git a/arch/mips/alchemy/devboards/db1300.c b/arch/mips/alchemy/devboards/db1300.c
index e476ae9472b9..1c64fdbe4c81 100644
--- a/arch/mips/alchemy/devboards/db1300.c
+++ b/arch/mips/alchemy/devboards/db1300.c
@@ -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);