X-Git-Url: https://git.kernelconcepts.de/?p=karo-tx-linux.git;a=blobdiff_plain;f=arch%2Farm%2Fcommon%2Flocomo.c;h=ad55680726ed5b10fac7efb9852d9294d940cf26;hp=51f430cc2fbf5b7a08bcfed5bc6dee1e97fb1435;hb=2be7a906752abf8dce9350c23b6d1036049a5d3e;hpb=67d2c36e901403bb97cb79ddb44d702c3284d0ba

diff --git a/arch/arm/common/locomo.c b/arch/arm/common/locomo.c
index 51f430cc2fbf..ad55680726ed 100644
--- a/arch/arm/common/locomo.c
+++ b/arch/arm/common/locomo.c
@@ -22,12 +22,11 @@
 #include <linux/delay.h>
 #include <linux/errno.h>
 #include <linux/ioport.h>
-#include <linux/device.h>
+#include <linux/platform_device.h>
 #include <linux/slab.h>
 #include <linux/spinlock.h>
 
 #include <asm/hardware.h>
-#include <asm/mach-types.h>
 #include <asm/io.h>
 #include <asm/irq.h>
 #include <asm/mach/irq.h>
@@ -541,6 +540,97 @@ locomo_init_one_child(struct locomo *lchip, struct locomo_dev_info *info)
 	return ret;
 }
 
+#ifdef CONFIG_PM
+
+struct locomo_save_data {
+	u16	LCM_GPO;
+	u16	LCM_SPICT;
+	u16	LCM_GPE;
+	u16	LCM_ASD;
+	u16	LCM_SPIMD;
+};
+
+static int locomo_suspend(struct device *dev, pm_message_t state)
+{
+	struct locomo *lchip = dev_get_drvdata(dev);
+	struct locomo_save_data *save;
+	unsigned long flags;
+
+	save = kmalloc(sizeof(struct locomo_save_data), GFP_KERNEL);
+	if (!save)
+		return -ENOMEM;
+
+	dev->power.saved_state = (void *) save;
+
+	spin_lock_irqsave(&lchip->lock, flags);
+
+	save->LCM_GPO     = locomo_readl(lchip->base + LOCOMO_GPO);	/* GPIO */
+	locomo_writel(0x00, lchip->base + LOCOMO_GPO);
+	save->LCM_SPICT   = locomo_readl(lchip->base + LOCOMO_SPICT);	/* SPI */
+	locomo_writel(0x40, lchip->base + LOCOMO_SPICT);
+	save->LCM_GPE     = locomo_readl(lchip->base + LOCOMO_GPE);	/* GPIO */
+	locomo_writel(0x00, lchip->base + LOCOMO_GPE);
+	save->LCM_ASD     = locomo_readl(lchip->base + LOCOMO_ASD);	/* ADSTART */
+	locomo_writel(0x00, lchip->base + LOCOMO_ASD);
+	save->LCM_SPIMD   = locomo_readl(lchip->base + LOCOMO_SPIMD);	/* SPI */
+	locomo_writel(0x3C14, lchip->base + LOCOMO_SPIMD);
+
+	locomo_writel(0x00, lchip->base + LOCOMO_PAIF);
+	locomo_writel(0x00, lchip->base + LOCOMO_DAC);
+	locomo_writel(0x00, lchip->base + LOCOMO_BACKLIGHT + LOCOMO_TC);
+
+	if ( (locomo_readl(lchip->base + LOCOMO_LED + LOCOMO_LPT0) & 0x88) && (locomo_readl(lchip->base + LOCOMO_LED + LOCOMO_LPT1) & 0x88) )
+		locomo_writel(0x00, lchip->base + LOCOMO_C32K); 	/* CLK32 off */
+	else
+		/* 18MHz already enabled, so no wait */
+		locomo_writel(0xc1, lchip->base + LOCOMO_C32K); 	/* CLK32 on */
+
+	locomo_writel(0x00, lchip->base + LOCOMO_TADC);		/* 18MHz clock off*/
+	locomo_writel(0x00, lchip->base + LOCOMO_AUDIO + LOCOMO_ACC);			/* 22MHz/24MHz clock off */
+	locomo_writel(0x00, lchip->base + LOCOMO_FRONTLIGHT + LOCOMO_ALS);			/* FL */
+
+	spin_unlock_irqrestore(&lchip->lock, flags);
+
+	return 0;
+}
+
+static int locomo_resume(struct device *dev)
+{
+	struct locomo *lchip = dev_get_drvdata(dev);
+	struct locomo_save_data *save;
+	unsigned long r;
+	unsigned long flags;
+	
+	save = (struct locomo_save_data *) dev->power.saved_state;
+	if (!save)
+		return 0;
+
+	spin_lock_irqsave(&lchip->lock, flags);
+
+	locomo_writel(save->LCM_GPO, lchip->base + LOCOMO_GPO);
+	locomo_writel(save->LCM_SPICT, lchip->base + LOCOMO_SPICT);
+	locomo_writel(save->LCM_GPE, lchip->base + LOCOMO_GPE);
+	locomo_writel(save->LCM_ASD, lchip->base + LOCOMO_ASD);
+	locomo_writel(save->LCM_SPIMD, lchip->base + LOCOMO_SPIMD);
+
+	locomo_writel(0x00, lchip->base + LOCOMO_C32K);
+	locomo_writel(0x90, lchip->base + LOCOMO_TADC);
+
+	locomo_writel(0, lchip->base + LOCOMO_KEYBOARD + LOCOMO_KSC);
+	r = locomo_readl(lchip->base + LOCOMO_KEYBOARD + LOCOMO_KIC);
+	r &= 0xFEFF;
+	locomo_writel(r, lchip->base + LOCOMO_KEYBOARD + LOCOMO_KIC);
+	locomo_writel(0x1, lchip->base + LOCOMO_KEYBOARD + LOCOMO_KCMD);
+
+	spin_unlock_irqrestore(&lchip->lock, flags);
+
+	dev->power.saved_state = NULL;
+	kfree(save);
+
+	return 0;
+}
+#endif
+
 /**
  *	locomo_probe - probe for a single LoCoMo chip.
  *	@phys_addr: physical address of device.
@@ -707,6 +797,10 @@ static struct device_driver locomo_device_driver = {
 	.bus		= &platform_bus_type,
 	.probe		= locomo_probe,
 	.remove		= locomo_remove,
+#ifdef CONFIG_PM
+	.suspend	= locomo_suspend,
+	.resume		= locomo_resume,
+#endif
 };
 
 /*