From d91de093d94eca6e280e50c24b172ed598bb5724 Mon Sep 17 00:00:00 2001 From: Hans de Goede Date: Wed, 8 Jul 2015 16:41:40 +0200 Subject: usb: musb: sunxi: Add support for musb controller in A33 SoC The A33 SoC uses the same musb controller as found on the A31 and later, but allwinner has removed the configdata register, this commit adds special handling for this. Signed-off-by: Hans de Goede Signed-off-by: Felipe Balbi --- drivers/usb/musb/sunxi.c | 15 +++++++++++++++ 1 file changed, 15 insertions(+) (limited to 'drivers/usb/musb/sunxi.c') diff --git a/drivers/usb/musb/sunxi.c b/drivers/usb/musb/sunxi.c index df2f75eb9895..f9f6304ad854 100644 --- a/drivers/usb/musb/sunxi.c +++ b/drivers/usb/musb/sunxi.c @@ -73,6 +73,7 @@ #define SUNXI_MUSB_FL_PHY_ON 4 #define SUNXI_MUSB_FL_HAS_SRAM 5 #define SUNXI_MUSB_FL_HAS_RESET 6 +#define SUNXI_MUSB_FL_NO_CONFIGDATA 7 /* Our read/write methods need access and do not get passed in a musb ref :| */ static struct musb *sunxi_musb; @@ -370,6 +371,8 @@ static u32 sunxi_musb_busctl_offset(u8 epnum, u16 offset) static u8 sunxi_musb_readb(const void __iomem *addr, unsigned offset) { + struct sunxi_glue *glue; + if (addr == sunxi_musb->mregs) { /* generic control or fifo control reg access */ switch (offset) { @@ -392,6 +395,12 @@ static u8 sunxi_musb_readb(const void __iomem *addr, unsigned offset) case MUSB_RXFIFOSZ: return readb(addr + SUNXI_MUSB_RXFIFOSZ); case MUSB_CONFIGDATA + 0x10: /* See musb_read_configdata() */ + glue = dev_get_drvdata(sunxi_musb->controller->parent); + /* A33 saves a reg, and we get to hardcode this */ + if (test_bit(SUNXI_MUSB_FL_NO_CONFIGDATA, + &glue->flags)) + return 0xde; + return readb(addr + SUNXI_MUSB_CONFIGDATA); /* Offset for these is fixed by sunxi_musb_busctl_offset() */ case SUNXI_MUSB_TXFUNCADDR: @@ -643,6 +652,11 @@ static int sunxi_musb_probe(struct platform_device *pdev) if (of_device_is_compatible(np, "allwinner,sun6i-a31-musb")) set_bit(SUNXI_MUSB_FL_HAS_RESET, &glue->flags); + if (of_device_is_compatible(np, "allwinner,sun8i-a33-musb")) { + set_bit(SUNXI_MUSB_FL_HAS_RESET, &glue->flags); + set_bit(SUNXI_MUSB_FL_NO_CONFIGDATA, &glue->flags); + } + glue->clk = devm_clk_get(&pdev->dev, NULL); if (IS_ERR(glue->clk)) { dev_err(&pdev->dev, "Error getting clock: %ld\n", @@ -723,6 +737,7 @@ static int sunxi_musb_remove(struct platform_device *pdev) static const struct of_device_id sunxi_musb_match[] = { { .compatible = "allwinner,sun4i-a10-musb", }, { .compatible = "allwinner,sun6i-a31-musb", }, + { .compatible = "allwinner,sun8i-a33-musb", }, {} }; -- cgit