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Commit c64bb5f0 authored by Manuel Lauss's avatar Manuel Lauss Committed by Ralf Baechle
Browse files

MIPS: Alchemy: DB1300: Add touch penirq support 



wire up the WM9713 pendown irq support.

Signed-off-by: default avatarManuel Lauss <manuel.lauss@gmail.com>
Cc: Linux-MIPS <linux-mips@linux-mips.org>
Patchwork: https://patchwork.linux-mips.org/patch/7563/


Signed-off-by: default avatarRalf Baechle <ralf@linux-mips.org>
parent c02a505e

arch/mips/alchemy/devboards/db1300.c

+44 −0
Original line number Diff line number Diff line
@@ -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);