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USB: musb: make HAVE_CLK support optional
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The Blackfin port doesn't support HAVE_CLK and the musb driver works fine
with support stubbed out, so take the existing Blackfin clk stubs and move
them to common musb code so we can drop the Kconfig dependency.

Signed-off-by: Bryan Wu <[email protected]>
Signed-off-by: Mike Frysinger <[email protected]>
Signed-off-by: Greg Kroah-Hartman <[email protected]>
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vapier authored and gregkh committed Oct 9, 2009
1 parent 0a023c6 commit b20cf90
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Showing 4 changed files with 8 additions and 11 deletions.
2 changes: 1 addition & 1 deletion drivers/usb/musb/Kconfig
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Expand Up @@ -8,7 +8,7 @@ comment "Enable Host or Gadget support to see Inventra options"

# (M)HDRC = (Multipoint) Highspeed Dual-Role Controller
config USB_MUSB_HDRC
depends on (USB || USB_GADGET) && HAVE_CLK
depends on (USB || USB_GADGET)
depends on !SUPERH
select NOP_USB_XCEIV if ARCH_DAVINCI
select TWL4030_USB if MACH_OMAP_3430SDP
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1 change: 0 additions & 1 deletion drivers/usb/musb/blackfin.c
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Expand Up @@ -14,7 +14,6 @@
#include <linux/slab.h>
#include <linux/init.h>
#include <linux/list.h>
#include <linux/clk.h>
#include <linux/gpio.h>
#include <linux/io.h>

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7 changes: 7 additions & 0 deletions drivers/usb/musb/musb_core.h
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Expand Up @@ -95,6 +95,13 @@ struct musb_ep;
#endif
#endif /* need MUSB gadget selection */

#ifndef CONFIG_HAVE_CLK
/* Dummy stub for clk framework */
#define clk_get(dev, id) NULL
#define clk_put(clock) do {} while (0)
#define clk_enable(clock) do {} while (0)
#define clk_disable(clock) do {} while (0)
#endif

#ifdef CONFIG_PROC_FS
#include <linux/fs.h>
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9 changes: 0 additions & 9 deletions drivers/usb/musb/musb_regs.h
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Expand Up @@ -439,15 +439,6 @@ static inline void musb_write_txhubport(void __iomem *mbase, u8 epnum,
/* Not implemented - HW has seperate Tx/Rx FIFO */
#define MUSB_TXCSR_MODE 0x0000

/*
* Dummy stub for clk framework, it will be removed
* until Blackfin supports clk framework
*/
#define clk_get(dev, id) NULL
#define clk_put(clock) do {} while (0)
#define clk_enable(clock) do {} while (0)
#define clk_disable(clock) do {} while (0)

static inline void musb_write_txfifosz(void __iomem *mbase, u8 c_size)
{
}
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