diff options
author | Linus Torvalds <torvalds@linux-foundation.org> | 2011-01-07 13:16:28 -0800 |
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committer | Linus Torvalds <torvalds@linux-foundation.org> | 2011-01-07 13:16:28 -0800 |
commit | 3e5b08cbbf78bedd316904ab0cf3b27119433ee5 (patch) | |
tree | 0365745c1b7441c1868551c024410c829c3accc6 /arch/arm/mach-omap2/usb-musb.c | |
parent | da40d036fd716f0efb2917076220814b1e927ae1 (diff) | |
parent | 2af10844eb6ed104f9505bf3a7ba3ceb02264f31 (diff) |
Merge branch 'usb-next' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/usb-2.6
* 'usb-next' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/usb-2.6: (144 commits)
USB: add support for Dream Cheeky DL100B Webmail Notifier (1d34:0004)
USB: serial: ftdi_sio: add support for TIOCSERGETLSR
USB: ehci-mxc: Setup portsc register prior to accessing OTG viewport
USB: atmel_usba_udc: fix freeing irq in usba_udc_remove()
usb: ehci-omap: fix tll channel enable mask
usb: ohci-omap3: fix trivial typo
USB: gadget: ci13xxx: don't assume that PAGE_SIZE is 4096
USB: gadget: ci13xxx: fix complete() callback for no_interrupt rq's
USB: gadget: update ci13xxx to work with g_ether
USB: gadgets: ci13xxx: fix probing of compiled-in gadget drivers
Revert "USB: musb: pm: don't rely fully on clock support"
Revert "USB: musb: blackfin: pm: make it work"
USB: uas: Use GFP_NOIO instead of GFP_KERNEL in I/O submission path
USB: uas: Ensure we only bind to a UAS interface
USB: uas: Rename sense pipe and sense urb to status pipe and status urb
USB: uas: Use kzalloc instead of kmalloc
USB: uas: Fix up the Sense IU
usb: musb: core: kill unneeded #include's
DA8xx: assign name to MUSB IRQ resource
usb: gadget: g_ncm added
...
Manually fix up trivial conflicts in USB Kconfig changes in:
arch/arm/mach-omap2/Kconfig
arch/sh/Kconfig
drivers/usb/Kconfig
drivers/usb/host/ehci-hcd.c
and annoying chip clock data conflicts in:
arch/arm/mach-omap2/clock3xxx_data.c
arch/arm/mach-omap2/clock44xx_data.c
Diffstat (limited to 'arch/arm/mach-omap2/usb-musb.c')
-rw-r--r-- | arch/arm/mach-omap2/usb-musb.c | 104 |
1 files changed, 102 insertions, 2 deletions
diff --git a/arch/arm/mach-omap2/usb-musb.c b/arch/arm/mach-omap2/usb-musb.c index 72605584bff..5298949d4b1 100644 --- a/arch/arm/mach-omap2/usb-musb.c +++ b/arch/arm/mach-omap2/usb-musb.c @@ -30,8 +30,101 @@ #include <mach/irqs.h> #include <mach/am35xx.h> #include <plat/usb.h> +#include "control.h" -#ifdef CONFIG_USB_MUSB_SOC +#if defined(CONFIG_USB_MUSB_OMAP2PLUS) || defined (CONFIG_USB_MUSB_AM35X) + +static void am35x_musb_reset(void) +{ + u32 regval; + + /* Reset the musb interface */ + regval = omap_ctrl_readl(AM35XX_CONTROL_IP_SW_RESET); + + regval |= AM35XX_USBOTGSS_SW_RST; + omap_ctrl_writel(regval, AM35XX_CONTROL_IP_SW_RESET); + + regval &= ~AM35XX_USBOTGSS_SW_RST; + omap_ctrl_writel(regval, AM35XX_CONTROL_IP_SW_RESET); + + regval = omap_ctrl_readl(AM35XX_CONTROL_IP_SW_RESET); +} + +static void am35x_musb_phy_power(u8 on) +{ + unsigned long timeout = jiffies + msecs_to_jiffies(100); + u32 devconf2; + + if (on) { + /* + * Start the on-chip PHY and its PLL. + */ + devconf2 = omap_ctrl_readl(AM35XX_CONTROL_DEVCONF2); + + devconf2 &= ~(CONF2_RESET | CONF2_PHYPWRDN | CONF2_OTGPWRDN); + devconf2 |= CONF2_PHY_PLLON; + + omap_ctrl_writel(devconf2, AM35XX_CONTROL_DEVCONF2); + + pr_info(KERN_INFO "Waiting for PHY clock good...\n"); + while (!(omap_ctrl_readl(AM35XX_CONTROL_DEVCONF2) + & CONF2_PHYCLKGD)) { + cpu_relax(); + + if (time_after(jiffies, timeout)) { + pr_err(KERN_ERR "musb PHY clock good timed out\n"); + break; + } + } + } else { + /* + * Power down the on-chip PHY. + */ + devconf2 = omap_ctrl_readl(AM35XX_CONTROL_DEVCONF2); + + devconf2 &= ~CONF2_PHY_PLLON; + devconf2 |= CONF2_PHYPWRDN | CONF2_OTGPWRDN; + omap_ctrl_writel(devconf2, AM35XX_CONTROL_DEVCONF2); + } +} + +static void am35x_musb_clear_irq(void) +{ + u32 regval; + + regval = omap_ctrl_readl(AM35XX_CONTROL_LVL_INTR_CLEAR); + regval |= AM35XX_USBOTGSS_INT_CLR; + omap_ctrl_writel(regval, AM35XX_CONTROL_LVL_INTR_CLEAR); + regval = omap_ctrl_readl(AM35XX_CONTROL_LVL_INTR_CLEAR); +} + +static void am35x_musb_set_mode(u8 musb_mode) +{ + u32 devconf2 = omap_ctrl_readl(AM35XX_CONTROL_DEVCONF2); + + devconf2 &= ~CONF2_OTGMODE; + switch (musb_mode) { +#ifdef CONFIG_USB_MUSB_HDRC_HCD + case MUSB_HOST: /* Force VBUS valid, ID = 0 */ + devconf2 |= CONF2_FORCE_HOST; + break; +#endif +#ifdef CONFIG_USB_GADGET_MUSB_HDRC + case MUSB_PERIPHERAL: /* Force VBUS valid, ID = 1 */ + devconf2 |= CONF2_FORCE_DEVICE; + break; +#endif +#ifdef CONFIG_USB_MUSB_OTG + case MUSB_OTG: /* Don't override the VBUS/ID comparators */ + devconf2 |= CONF2_NO_OVERRIDE; + break; +#endif + default: + pr_info(KERN_INFO "Unsupported mode %u\n", musb_mode); + } + + omap_ctrl_writel(devconf2, AM35XX_CONTROL_DEVCONF2); +} static struct resource musb_resources[] = { [0] = { /* start and end set dynamically */ @@ -40,10 +133,12 @@ static struct resource musb_resources[] = { [1] = { /* general IRQ */ .start = INT_243X_HS_USB_MC, .flags = IORESOURCE_IRQ, + .name = "mc", }, [2] = { /* DMA IRQ */ .start = INT_243X_HS_USB_DMA, .flags = IORESOURCE_IRQ, + .name = "dma", }, }; @@ -75,7 +170,7 @@ static struct musb_hdrc_platform_data musb_plat = { static u64 musb_dmamask = DMA_BIT_MASK(32); static struct platform_device musb_device = { - .name = "musb_hdrc", + .name = "musb-omap2430", .id = -1, .dev = { .dma_mask = &musb_dmamask, @@ -91,8 +186,13 @@ void __init usb_musb_init(struct omap_musb_board_data *board_data) if (cpu_is_omap243x()) { musb_resources[0].start = OMAP243X_HS_BASE; } else if (cpu_is_omap3517() || cpu_is_omap3505()) { + musb_device.name = "musb-am35x"; musb_resources[0].start = AM35XX_IPSS_USBOTGSS_BASE; musb_resources[1].start = INT_35XX_USBOTG_IRQ; + board_data->set_phy_power = am35x_musb_phy_power; + board_data->clear_irq = am35x_musb_clear_irq; + board_data->set_mode = am35x_musb_set_mode; + board_data->reset = am35x_musb_reset; } else if (cpu_is_omap34xx()) { musb_resources[0].start = OMAP34XX_HSUSB_OTG_BASE; } else if (cpu_is_omap44xx()) { |