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authorDavid Brownell <dbrownell@users.sourceforge.net>2009-02-20 13:45:17 -0800
committerGreg Kroah-Hartman <gregkh@suse.de>2009-02-27 14:40:51 -0800
commit34f32c9701013ac5af89b82a6ae285e790b643e7 (patch)
tree3db26e8ab2990d9e9a14afcef59d810ac88e82ed /arch
parent67f5a4ba9741fcef3f4db3509ad03565d9e33af2 (diff)
downloadop-kernel-dev-34f32c9701013ac5af89b82a6ae285e790b643e7.zip
op-kernel-dev-34f32c9701013ac5af89b82a6ae285e790b643e7.tar.gz
usb: musb: make Davinci *work* in mainline
Now that the musb build fixes for DaVinci got merged (RC3?), kick in the other bits needed to get it finally *working* in mainline: - Use clk_enable()/clk_disable() ... the "always enable USB clocks" code this originally relied on has since been removed. - Initialize the USB device only after the relevant I2C GPIOs are available, so the host side can properly enable VBUS. - Tweak init sequencing to cope with mainline's relatively late init of the I2C system bus for power switches, transceivers, and so on. Sanity tested on DM6664 EVM for host and peripheral modes; that system won't boot with CONFIG_PM enabled, so OTG can't yet be tested. Also verified on OMAP3. (Unrelated: correct the MODULE_PARM_DESC spelling of musb_debug.) Signed-off-by: David Brownell <dbrownell@users.sourceforge.net> Cc: Felipe Balbi <me@felipebalbi.com> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
Diffstat (limited to 'arch')
-rw-r--r--arch/arm/mach-davinci/board-evm.c6
-rw-r--r--arch/arm/mach-davinci/clock.c5
-rw-r--r--arch/arm/mach-davinci/usb.c1
3 files changed, 9 insertions, 3 deletions
diff --git a/arch/arm/mach-davinci/board-evm.c b/arch/arm/mach-davinci/board-evm.c
index a957d23..38b6a9c 100644
--- a/arch/arm/mach-davinci/board-evm.c
+++ b/arch/arm/mach-davinci/board-evm.c
@@ -311,6 +311,9 @@ evm_u35_setup(struct i2c_client *client, int gpio, unsigned ngpio, void *c)
gpio_request(gpio + 7, "nCF_SEL");
gpio_direction_output(gpio + 7, 1);
+ /* irlml6401 sustains over 3A, switches 5V in under 8 msec */
+ setup_usb(500, 8);
+
return 0;
}
@@ -417,9 +420,6 @@ static __init void davinci_evm_init(void)
platform_add_devices(davinci_evm_devices,
ARRAY_SIZE(davinci_evm_devices));
evm_init_i2c();
-
- /* irlml6401 sustains over 3A, switches 5V in under 8 msec */
- setup_usb(500, 8);
}
static __init void davinci_evm_irq_init(void)
diff --git a/arch/arm/mach-davinci/clock.c b/arch/arm/mach-davinci/clock.c
index 28f6dbc..abb92b7 100644
--- a/arch/arm/mach-davinci/clock.c
+++ b/arch/arm/mach-davinci/clock.c
@@ -231,6 +231,11 @@ static struct clk davinci_clks[] = {
.lpsc = DAVINCI_LPSC_GPIO,
},
{
+ .name = "usb",
+ .rate = &commonrate,
+ .lpsc = DAVINCI_LPSC_USB,
+ },
+ {
.name = "AEMIFCLK",
.rate = &commonrate,
.lpsc = DAVINCI_LPSC_AEMIF,
diff --git a/arch/arm/mach-davinci/usb.c b/arch/arm/mach-davinci/usb.c
index 867ead2..6968078 100644
--- a/arch/arm/mach-davinci/usb.c
+++ b/arch/arm/mach-davinci/usb.c
@@ -47,6 +47,7 @@ static struct musb_hdrc_platform_data usb_data = {
#elif defined(CONFIG_USB_MUSB_HOST)
.mode = MUSB_HOST,
#endif
+ .clock = "usb",
.config = &musb_config,
};
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