From 34f32c9701013ac5af89b82a6ae285e790b643e7 Mon Sep 17 00:00:00 2001 From: David Brownell Date: Fri, 20 Feb 2009 13:45:17 -0800 Subject: 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 Cc: Felipe Balbi Signed-off-by: Greg Kroah-Hartman --- arch/arm/mach-davinci/board-evm.c | 6 +++--- arch/arm/mach-davinci/clock.c | 5 +++++ arch/arm/mach-davinci/usb.c | 1 + 3 files changed, 9 insertions(+), 3 deletions(-) (limited to 'arch/arm') diff --git a/arch/arm/mach-davinci/board-evm.c b/arch/arm/mach-davinci/board-evm.c index a957d239a68..38b6a9ce2a9 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 28f6dbc95bd..abb92b7eca0 100644 --- a/arch/arm/mach-davinci/clock.c +++ b/arch/arm/mach-davinci/clock.c @@ -230,6 +230,11 @@ static struct clk davinci_clks[] = { .rate = &commonrate, .lpsc = DAVINCI_LPSC_GPIO, }, + { + .name = "usb", + .rate = &commonrate, + .lpsc = DAVINCI_LPSC_USB, + }, { .name = "AEMIFCLK", .rate = &commonrate, diff --git a/arch/arm/mach-davinci/usb.c b/arch/arm/mach-davinci/usb.c index 867ead2559a..69680784448 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, }; -- cgit v1.2.3