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122 lines
4.6 KiB
Diff
122 lines
4.6 KiB
Diff
From 348e7db53a04b7d98e0f63f372b86882a995d3c8 Mon Sep 17 00:00:00 2001
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From: Matt Hsu <matt_hsu@openmoko.org>
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Date: Fri, 25 Jul 2008 23:06:07 +0100
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Subject: [PATCH] From cc08b5986dfd8d971ee46ce7045fb7863f99a92a Mon Sep 17 00:00:00 2001
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Subject: [PATCH] - add suspend/resume function of s3c24xx_hcd driver
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Signed-off-by: Matt Hsu <matt_hsu@openmoko.org>
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---
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drivers/sdio/hcd/s3c24xx/s3c24xx_hcd.c | 65 ++++++++++++++++++++++++++++++++
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drivers/sdio/hcd/s3c24xx/s3c24xx_hcd.h | 14 +++++++
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2 files changed, 79 insertions(+), 0 deletions(-)
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diff --git a/drivers/sdio/hcd/s3c24xx/s3c24xx_hcd.c b/drivers/sdio/hcd/s3c24xx/s3c24xx_hcd.c
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index af0066d..fdc69a0 100644
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--- a/drivers/sdio/hcd/s3c24xx/s3c24xx_hcd.c
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+++ b/drivers/sdio/hcd/s3c24xx/s3c24xx_hcd.c
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@@ -1365,11 +1365,76 @@ static int s3c24xx_hcd_remove(struct platform_device * pdev) {
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return 0;
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}
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+#ifdef CONFIG_PM
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+
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+static int s3c24xx_hcd_suspend(struct platform_device * pdev)
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+{
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+ struct s3c24xx_hcd_context * context = &hcd_context;
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+ unsigned long flags;
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+
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+ spin_lock_irqsave(&context->lock, flags);
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+
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+ context->suspend_regs.con = readl(context->base + S3C2410_SDICON);
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+ context->suspend_regs.pre = readl(context->base + S3C2410_SDIPRE);
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+ context->suspend_regs.cmdarg = readl(context->base + S3C2410_SDICMDARG);
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+ context->suspend_regs.cmdcon = readl(context->base + S3C2410_SDICMDCON);
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+ context->suspend_regs.cmdsta = readl(context->base + S3C2410_SDICMDSTAT);
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+ context->suspend_regs.r0 = readl(context->base + S3C2410_SDIRSP0);
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+ context->suspend_regs.r1 = readl(context->base + S3C2410_SDIRSP1);
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+ context->suspend_regs.r2 = readl(context->base + S3C2410_SDIRSP2);
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+ context->suspend_regs.r3 = readl(context->base + S3C2410_SDIRSP3);
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+ context->suspend_regs.timer = readl(context->base + S3C2410_SDITIMER);
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+ context->suspend_regs.bsize = readl(context->base + S3C2410_SDIBSIZE);
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+ context->suspend_regs.datcon = readl(context->base + S3C2410_SDIDCON);
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+ context->suspend_regs.datcnt = readl(context->base + S3C2410_SDIDCNT);
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+ context->suspend_regs.datsta = readl(context->base + S3C2410_SDIDSTA);
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+ context->suspend_regs.fsta = readl(context->base + S3C2410_SDIFSTA);
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+ context->suspend_regs.imask = readl(context->base + S3C2440_SDIIMSK);
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+
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+ spin_unlock_irqrestore(&context->lock, flags);
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+ return 0;
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+}
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+
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+static int s3c24xx_hcd_resume(struct platform_device * pdev)
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+{
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+ struct s3c24xx_hcd_context * context = &hcd_context;
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+ unsigned long flags;
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+
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+ spin_lock_irqsave(&context->lock, flags);
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+
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+ writel(context->suspend_regs.con, context->base + S3C2410_SDICON);
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+ writel(context->suspend_regs.pre, context->base + S3C2410_SDIPRE);
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+ writel(context->suspend_regs.cmdarg, context->base + S3C2410_SDICMDARG);
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+ writel(context->suspend_regs.cmdcon, context->base + S3C2410_SDICMDCON);
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+ writel(context->suspend_regs.cmdsta, context->base + S3C2410_SDICMDSTAT);
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+ writel(context->suspend_regs.r0, context->base + S3C2410_SDIRSP0);
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+ writel(context->suspend_regs.r1, context->base + S3C2410_SDIRSP1);
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+ writel(context->suspend_regs.r2, context->base + S3C2410_SDIRSP2);
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+ writel(context->suspend_regs.r3, context->base + S3C2410_SDIRSP3);
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+ writel(context->suspend_regs.timer, context->base + S3C2410_SDITIMER);
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+ writel(context->suspend_regs.bsize, context->base + S3C2410_SDIBSIZE);
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+ writel(context->suspend_regs.datcon, context->base + S3C2410_SDIDCON);
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+ writel(context->suspend_regs.datcnt, context->base + S3C2410_SDIDCNT);
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+ writel(context->suspend_regs.datsta, context->base + S3C2410_SDIDSTA);
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+ writel(context->suspend_regs.fsta, context->base + S3C2410_SDIFSTA);
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+ writel(context->suspend_regs.imask, context->base + S3C2440_SDIIMSK);
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+
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+ spin_unlock_irqrestore(&context->lock, flags);
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+ return 0;
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+}
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+
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+#else
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+#define s3c24xx_hcd_suspend = NULL
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+#define s3c24xx_hcd_resume = NULL
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+#endif
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+
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static struct platform_driver s3c24xx_hcd_sdio =
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{
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.driver.name = "s3c24xx-sdio",
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.probe = s3c24xx_hcd_probe,
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.remove = s3c24xx_hcd_remove,
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+ .suspend = s3c24xx_hcd_suspend,
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+ .resume = s3c24xx_hcd_resume,
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};
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#ifdef CONFIG_DEBUG_FS
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diff --git a/drivers/sdio/hcd/s3c24xx/s3c24xx_hcd.h b/drivers/sdio/hcd/s3c24xx/s3c24xx_hcd.h
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index eb262fc..47fdd33 100644
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--- a/drivers/sdio/hcd/s3c24xx/s3c24xx_hcd.h
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+++ b/drivers/sdio/hcd/s3c24xx/s3c24xx_hcd.h
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@@ -57,6 +57,20 @@ struct s3c24xx_hcd_context {
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struct work_struct io_work;
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struct work_struct irq_work;
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+
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+#ifdef CONFIG_PM
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+ struct {
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+ UINT32 con;
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+ UINT32 pre;
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+ UINT32 cmdarg, cmdcon, cmdsta;
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+ UINT32 r0, r1, r2, r3;
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+ UINT32 timer;
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+ UINT32 bsize;
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+ UINT32 datcon, datcnt, datsta;
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+ UINT32 fsta;
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+ UINT32 imask;
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+ } suspend_regs;
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+#endif
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};
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SDIO_STATUS s3c24xx_hcd_config(PSDHCD hcd, PSDCONFIG config);
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--
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1.5.6.3
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