From: Min Guo <min.guo@xxxxxxxxxxxx>
Delete the const attribute of addr parameter in readb/w/l hooks, these
changes are for implementing clearing W1C registers.
Replace musb_readb/w with musb_clearb/w to clear the interrupt status.
While at here, change some unsigned type to u32 to fix checkpatch.pl
warnings.
Signed-off-by: Min Guo <min.guo@xxxxxxxxxxxx>
[b-liu@xxxxxx: fix checkpatch.pl warnings.]
Signed-off-by: Bin Liu <b-liu@xxxxxx>
---
drivers/usb/musb/musb_core.c | 42 ++++++++++++++++++++++++------------
drivers/usb/musb/musb_core.h | 12 +++++++----
drivers/usb/musb/musb_io.h | 14 ++++++------
drivers/usb/musb/musbhsdma.c | 2 +-
drivers/usb/musb/sunxi.c | 4 ++--
drivers/usb/musb/tusb6010.c | 2 +-
6 files changed, 48 insertions(+), 28 deletions(-)
diff --git a/drivers/usb/musb/musb_core.c b/drivers/usb/musb/musb_core.c
index f3c95cd12e04..71691a1f8ae3 100644
--- a/drivers/usb/musb/musb_core.c
+++ b/drivers/usb/musb/musb_core.c
@@ -247,7 +247,7 @@ static u32 musb_default_busctl_offset(u8 epnum, u16 offset)
return 0x80 + (0x08 * epnum) + offset;
}
-static u8 musb_default_readb(const void __iomem *addr, unsigned offset)
+static u8 musb_default_readb(void __iomem *addr, u32 offset)
{
u8 data = __raw_readb(addr + offset);
@@ -255,13 +255,13 @@ static u8 musb_default_readb(const void __iomem *addr, unsigned offset)
return data;
}
-static void musb_default_writeb(void __iomem *addr, unsigned offset, u8 data)
+static void musb_default_writeb(void __iomem *addr, u32 offset, u8 data)
{
trace_musb_writeb(__builtin_return_address(0), addr, offset, data);
__raw_writeb(data, addr + offset);
}
-static u16 musb_default_readw(const void __iomem *addr, unsigned offset)
+static u16 musb_default_readw(void __iomem *addr, u32 offset)
{
u16 data = __raw_readw(addr + offset);
@@ -269,7 +269,7 @@ static u16 musb_default_readw(const void __iomem *addr, unsigned offset)
return data;
}
-static void musb_default_writew(void __iomem *addr, unsigned offset, u16 data)
+static void musb_default_writew(void __iomem *addr, u32 offset, u16 data)
{
trace_musb_writew(__builtin_return_address(0), addr, offset, data);
__raw_writew(data, addr + offset);
@@ -397,19 +397,25 @@ static void musb_default_read_fifo(struct musb_hw_ep *hw_ep, u16 len, u8 *dst)
/*
* Old style IO functions
*/
-u8 (*musb_readb)(const void __iomem *addr, unsigned offset);
+u8 (*musb_readb)(void __iomem *addr, u32 offset);
EXPORT_SYMBOL_GPL(musb_readb);
-void (*musb_writeb)(void __iomem *addr, unsigned offset, u8 data);
+void (*musb_writeb)(void __iomem *addr, u32 offset, u8 data);
EXPORT_SYMBOL_GPL(musb_writeb);
-u16 (*musb_readw)(const void __iomem *addr, unsigned offset);
+u8 (*musb_clearb)(void __iomem *addr, u32 offset);
+EXPORT_SYMBOL_GPL(musb_clearb);
+
+u16 (*musb_readw)(void __iomem *addr, u32 offset);
EXPORT_SYMBOL_GPL(musb_readw);
-void (*musb_writew)(void __iomem *addr, unsigned offset, u16 data);
+void (*musb_writew)(void __iomem *addr, u32 offset, u16 data);
EXPORT_SYMBOL_GPL(musb_writew);
-u32 musb_readl(const void __iomem *addr, unsigned offset)
+u16 (*musb_clearw)(void __iomem *addr, u32 offset);
+EXPORT_SYMBOL_GPL(musb_clearw);
+
+u32 musb_readl(void __iomem *addr, u32 offset)
{
u32 data = __raw_readl(addr + offset);
@@ -418,7 +424,7 @@ u32 musb_readl(const void __iomem *addr, unsigned offset)
}
EXPORT_SYMBOL_GPL(musb_readl);
-void musb_writel(void __iomem *addr, unsigned offset, u32 data)
+void musb_writel(void __iomem *addr, u32 offset, u32 data)
{
trace_musb_writel(__builtin_return_address(0), addr, offset, data);
__raw_writel(data, addr + offset);
@@ -1149,7 +1155,6 @@ static irqreturn_t musb_stage0_irq(struct musb *musb, u8 int_usb,
static void musb_disable_interrupts(struct musb *musb)
{
void __iomem *mbase = musb->mregs;
- u16 temp;
/* disable interrupts */
musb_writeb(mbase, MUSB_INTRUSBE, 0);
@@ -1159,9 +1164,9 @@ static void musb_disable_interrupts(struct musb *musb)
musb_writew(mbase, MUSB_INTRRXE, 0);
/* flush pending interrupts */
- temp = musb_readb(mbase, MUSB_INTRUSB);
- temp = musb_readw(mbase, MUSB_INTRTX);
- temp = musb_readw(mbase, MUSB_INTRRX);
+ musb_clearb(mbase, MUSB_INTRUSB);
+ musb_clearw(mbase, MUSB_INTRTX);
+ musb_clearw(mbase, MUSB_INTRRX);
}
static void musb_enable_interrupts(struct musb *musb)
@@ -2388,10 +2393,19 @@ musb_init_controller(struct device *dev, int nIrq, void __iomem *ctrl)
musb_readb = musb->ops->readb;
if (musb->ops->writeb)
musb_writeb = musb->ops->writeb;
+ if (musb->ops->clearb)
+ musb_clearb = musb->ops->clearb;
+ else
+ musb_clearb = musb_readb;
+
if (musb->ops->readw)
musb_readw = musb->ops->readw;
if (musb->ops->writew)
musb_writew = musb->ops->writew;
+ if (musb->ops->clearw)
+ musb_clearw = musb->ops->clearw;
+ else
+ musb_clearw = musb_readw;
#ifndef CONFIG_MUSB_PIO_ONLY
if (!musb->ops->dma_init || !musb->ops->dma_exit) {
diff --git a/drivers/usb/musb/musb_core.h b/drivers/usb/musb/musb_core.h
index 2e4fcf1a1a5c..290a2bc46606 100644
--- a/drivers/usb/musb/musb_core.h
+++ b/drivers/usb/musb/musb_core.h
@@ -120,8 +120,10 @@ struct musb_io;
* @fifo_offset: returns the fifo offset
* @readb: read 8 bits
* @writeb: write 8 bits
+ * @clearb: could be clear-on-readb or W1C
* @readw: read 16 bits
* @writew: write 16 bits
+ * @clearw: could be clear-on-readw or W1C
* @read_fifo: reads the fifo
* @write_fifo: writes to fifo
* @get_toggle: platform specific get toggle function
@@ -164,10 +166,12 @@ struct musb_platform_ops {
u16 fifo_mode;
u32 (*fifo_offset)(u8 epnum);
u32 (*busctl_offset)(u8 epnum, u16 offset);
- u8 (*readb)(const void __iomem *addr, unsigned offset);
- void (*writeb)(void __iomem *addr, unsigned offset, u8 data);
- u16 (*readw)(const void __iomem *addr, unsigned offset);
- void (*writew)(void __iomem *addr, unsigned offset, u16 data);
+ u8 (*readb)(void __iomem *addr, u32 offset);
+ void (*writeb)(void __iomem *addr, u32 offset, u8 data);
+ u8 (*clearb)(void __iomem *addr, u32 offset);
+ u16 (*readw)(void __iomem *addr, u32 offset);
+ void (*writew)(void __iomem *addr, u32 offset, u16 data);
+ u16 (*clearw)(void __iomem *addr, u32 offset);
void (*read_fifo)(struct musb_hw_ep *hw_ep, u16 len, u8 *buf);
void (*write_fifo)(struct musb_hw_ep *hw_ep, u16 len, const u8 *buf);
u16 (*get_toggle)(struct musb_qh *qh, int is_out);
diff --git a/drivers/usb/musb/musb_io.h b/drivers/usb/musb/musb_io.h
index 8179334f405b..f17aabd95a50 100644
--- a/drivers/usb/musb/musb_io.h
+++ b/drivers/usb/musb/musb_io.h
@@ -37,11 +37,13 @@ struct musb_io {
};
/* Do not add new entries here, add them the struct musb_io instead */
-extern u8 (*musb_readb)(const void __iomem *addr, unsigned offset);
-extern void (*musb_writeb)(void __iomem *addr, unsigned offset, u8 data);
-extern u16 (*musb_readw)(const void __iomem *addr, unsigned offset);
-extern void (*musb_writew)(void __iomem *addr, unsigned offset, u16 data);
-extern u32 musb_readl(const void __iomem *addr, unsigned offset);
-extern void musb_writel(void __iomem *addr, unsigned offset, u32 data);
+extern u8 (*musb_readb)(void __iomem *addr, u32 offset);
+extern void (*musb_writeb)(void __iomem *addr, u32 offset, u8 data);
+extern u8 (*musb_clearb)(void __iomem *addr, u32 offset);
+extern u16 (*musb_readw)(void __iomem *addr, u32 offset);
+extern void (*musb_writew)(void __iomem *addr, u32 offset, u16 data);
+extern u16 (*musb_clearw)(void __iomem *addr, u32 offset);
+extern u32 musb_readl(void __iomem *addr, u32 offset);
+extern void musb_writel(void __iomem *addr, u32 offset, u32 data);
#endif
diff --git a/drivers/usb/musb/musbhsdma.c b/drivers/usb/musb/musbhsdma.c
index bcc0fbf42ba8..0aacfc8be5a1 100644
--- a/drivers/usb/musb/musbhsdma.c
+++ b/drivers/usb/musb/musbhsdma.c
@@ -284,7 +284,7 @@ irqreturn_t dma_controller_irq(int irq, void *private_data)
spin_lock_irqsave(&musb->lock, flags);
- int_hsdma = musb_readb(mbase, MUSB_HSDMA_INTR);
+ int_hsdma = musb_clearb(mbase, MUSB_HSDMA_INTR);
if (!int_hsdma) {
musb_dbg(musb, "spurious DMA irq");
diff --git a/drivers/usb/musb/sunxi.c b/drivers/usb/musb/sunxi.c
index a72665fbf111..f3f76f2ac63f 100644
--- a/drivers/usb/musb/sunxi.c
+++ b/drivers/usb/musb/sunxi.c
@@ -407,7 +407,7 @@ static u32 sunxi_musb_busctl_offset(u8 epnum, u16 offset)
return SUNXI_MUSB_TXFUNCADDR + offset;
}
-static u8 sunxi_musb_readb(const void __iomem *addr, unsigned offset)
+static u8 sunxi_musb_readb(void __iomem *addr, u32 offset)
{
struct sunxi_glue *glue;
@@ -520,7 +520,7 @@ static void sunxi_musb_writeb(void __iomem *addr, unsigned offset, u8 data)
(int)(addr - sunxi_musb->mregs));
}
-static u16 sunxi_musb_readw(const void __iomem *addr, unsigned offset)
+static u16 sunxi_musb_readw(void __iomem *addr, u32 offset)
{
if (addr == sunxi_musb->mregs) {
/* generic control or fifo control reg access */
diff --git a/drivers/usb/musb/tusb6010.c b/drivers/usb/musb/tusb6010.c
index 39453287b5c3..5d449089e3ad 100644
--- a/drivers/usb/musb/tusb6010.c
+++ b/drivers/usb/musb/tusb6010.c
@@ -142,7 +142,7 @@ static void tusb_ep_select(void __iomem *mbase, u8 epnum)
/*
* TUSB6010 doesn't allow 8-bit access; 16-bit access is the minimum.
*/
-static u8 tusb_readb(const void __iomem *addr, unsigned offset)
+static u8 tusb_readb(void __iomem *addr, u32 offset)
{
u16 tmp;
u8 val;
--
2.17.1
