diff options
Diffstat (limited to 'arch/mips/alchemy/devboards/db1300.c')
| -rw-r--r-- | arch/mips/alchemy/devboards/db1300.c | 47 |
1 files changed, 46 insertions, 1 deletions
diff --git a/arch/mips/alchemy/devboards/db1300.c b/arch/mips/alchemy/devboards/db1300.c index ef93ee3f6a2c..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); @@ -762,9 +806,10 @@ int __init db1300_dev_setup(void) __raw_writel(PSC_SEL_CLK_SERCLK, (void __iomem *)KSEG1ADDR(AU1300_PSC2_PHYS_ADDR) + PSC_SEL_OFFSET); wmb(); - /* I2C uses internal 48MHz EXTCLK1 */ + /* I2C driver wants 50MHz, get as close as possible */ c = clk_get(NULL, "psc3_intclk"); if (!IS_ERR(c)) { + clk_set_rate(c, 50000000); clk_prepare_enable(c); clk_put(c); } |