From 32c3b94e2b643bfeca5e48b0f7f0b81812c7a1d3 Mon Sep 17 00:00:00 2001 From: Anand Gadiyar Date: Mon, 16 Nov 2009 21:09:21 +0530 Subject: [PATCH] USB: MUSB: save hardware revision at init MUSB: save hardware revision at init This can be used later to flag workarounds for issues affecting particular revisions. Saving this at init avoids having to read the HWVERS register multiple times in code. While at it, use macros to extract the version information instead of using hardcoded values. Signed-off-by: Anand Gadiyar Cc: Ajay Kumar Gupta Acked-by: Felipe Balbi Cc: David Brownell Cc: Sergei Shtylyov Signed-off-by: Greg Kroah-Hartman --- drivers/usb/musb/musb_core.c | 10 ++++------ drivers/usb/musb/musb_core.h | 8 ++++++++ 2 files changed, 12 insertions(+), 6 deletions(-) diff --git a/drivers/usb/musb/musb_core.c b/drivers/usb/musb/musb_core.c index 547e0e390726..49f2346afad3 100644 --- a/drivers/usb/musb/musb_core.c +++ b/drivers/usb/musb/musb_core.c @@ -1319,7 +1319,6 @@ static int __init musb_core_init(u16 musb_type, struct musb *musb) #endif u8 reg; char *type; - u16 hwvers, rev_major, rev_minor; char aInfo[78], aRevision[32], aDate[12]; void __iomem *mbase = musb->mregs; int status = 0; @@ -1391,11 +1390,10 @@ static int __init musb_core_init(u16 musb_type, struct musb *musb) } /* log release info */ - hwvers = musb_read_hwvers(mbase); - rev_major = (hwvers >> 10) & 0x1f; - rev_minor = hwvers & 0x3ff; - snprintf(aRevision, 32, "%d.%d%s", rev_major, - rev_minor, (hwvers & 0x8000) ? "RC" : ""); + musb->hwvers = musb_read_hwvers(mbase); + snprintf(aRevision, 32, "%d.%d%s", MUSB_HWVERS_MAJOR(musb->hwvers), + MUSB_HWVERS_MINOR(musb->hwvers), + (musb->hwvers & MUSB_HWVERS_RC) ? "RC" : ""); printk(KERN_DEBUG "%s: %sHDRC RTL version %s %s\n", musb_driver_name, type, aRevision, aDate); diff --git a/drivers/usb/musb/musb_core.h b/drivers/usb/musb/musb_core.h index 6aa5f22e5274..03d50909b078 100644 --- a/drivers/usb/musb/musb_core.h +++ b/drivers/usb/musb/musb_core.h @@ -322,6 +322,14 @@ struct musb { struct clk *clock; irqreturn_t (*isr)(int, void *); struct work_struct irq_work; +#define MUSB_HWVERS_MAJOR(x) ((x >> 10) & 0x1f) +#define MUSB_HWVERS_MINOR(x) (x & 0x3ff) +#define MUSB_HWVERS_RC 0x8000 +#define MUSB_HWVERS_1300 0x52C +#define MUSB_HWVERS_1400 0x590 +#define MUSB_HWVERS_1800 0x720 +#define MUSB_HWVERS_2000 0x800 + u16 hwvers; /* this hub status bit is reserved by USB 2.0 and not seen by usbcore */ #define MUSB_PORT_STAT_RESUME (1 << 31)