3 files changed, 53 insertions, 6 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);
 	}
diff --git a/arch/mips/alchemy/devboards/db1550.c b/arch/mips/alchemy/devboards/db1550.c
index 7e89936f763e..0fd5177e35ab 100644
--- a/arch/mips/alchemy/devboards/db1550.c
+++ b/arch/mips/alchemy/devboards/db1550.c
@@ -34,12 +34,9 @@ static void __init db1550_hw_setup(void)
 	void __iomem *base;
 	unsigned long v;
 
-	/* complete SPI setup: link psc0_intclk to a 48MHz source,
-	 * and assign GPIO16 to PSC0_SYNC1 (SPI cs# line) as well as PSC1_SYNC
-	 * for AC97 on PB1550.
+	/* complete pin setup: assign GPIO16 to PSC0_SYNC1 (SPI cs# line)
+	 * as well as PSC1_SYNC for AC97 on PB1550.
 	 */
-	v = alchemy_rdsys(AU1000_SYS_CLKSRC);
-	alchemy_wrsys(v | 0x000001e0, AU1000_SYS_CLKSRC);
 	v = alchemy_rdsys(AU1000_SYS_PINFUNC);
 	alchemy_wrsys(v | 1 | SYS_PF_PSC1_S1, AU1000_SYS_PINFUNC);
 
@@ -586,11 +583,13 @@ int __init db1550_dev_setup(void)
 
 	c = clk_get(NULL, "psc0_intclk");
 	if (!IS_ERR(c)) {
+		clk_set_rate(c, 50000000);
 		clk_prepare_enable(c);
 		clk_put(c);
 	}
 	c = clk_get(NULL, "psc2_intclk");
 	if (!IS_ERR(c)) {
+		clk_set_rate(c, db1550_spi_platdata.mainclk_hz);
 		clk_prepare_enable(c);
 		clk_put(c);
 	}
diff --git a/arch/mips/alchemy/devboards/platform.c b/arch/mips/alchemy/devboards/platform.c
index 8df86eb94972..be139a0198b0 100644
--- a/arch/mips/alchemy/devboards/platform.c
+++ b/arch/mips/alchemy/devboards/platform.c
@@ -11,6 +11,7 @@
 #include <linux/pm.h>
 
 #include <asm/bootinfo.h>
+#include <asm/idle.h>
 #include <asm/reboot.h>
 #include <asm/mach-au1x00/au1000.h>
 #include <asm/mach-db1x00/bcsr.h>
@@ -53,6 +54,8 @@ static void db1x_power_off(void)
 {
 	bcsr_write(BCSR_RESETS, 0);
 	bcsr_write(BCSR_SYSTEM, BCSR_SYSTEM_PWROFF | BCSR_SYSTEM_RESET);
+	while (1)		/* sit and spin */
+		cpu_wait();
 }
 
 static void db1x_reset(char *c)