diff options
Diffstat (limited to 'arch/arm/mach-omap2/usb-musb.c')
| -rw-r--r-- | arch/arm/mach-omap2/usb-musb.c | 219 |
1 files changed, 118 insertions, 101 deletions
diff --git a/arch/arm/mach-omap2/usb-musb.c b/arch/arm/mach-omap2/usb-musb.c index d85296dc896c..5298949d4b11 100644 --- a/arch/arm/mach-omap2/usb-musb.c +++ b/arch/arm/mach-omap2/usb-musb.c @@ -28,19 +28,103 @@ #include <mach/hardware.h> #include <mach/irqs.h> -#include <mach/mux.h> -#include <mach/usb.h> +#include <mach/am35xx.h> +#include <plat/usb.h> +#include "control.h" -#define OTG_SYSCONFIG (OMAP34XX_HSUSB_OTG_BASE + 0x404) +#if defined(CONFIG_USB_MUSB_OMAP2PLUS) || defined (CONFIG_USB_MUSB_AM35X) -static void __init usb_musb_pm_init(void) +static void am35x_musb_reset(void) { - /* Ensure force-idle mode for OTG controller */ - if (cpu_is_omap34xx()) - omap_writel(0, OTG_SYSCONFIG); + 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); + } } -#ifdef CONFIG_USB_MUSB_SOC +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 */ @@ -49,77 +133,20 @@ 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", }, }; -static int clk_on; - -static int musb_set_clock(struct clk *clk, int state) -{ - if (state) { - if (clk_on > 0) - return -ENODEV; - - clk_enable(clk); - clk_on = 1; - } else { - if (clk_on == 0) - return -ENODEV; - - clk_disable(clk); - clk_on = 0; - } - - return 0; -} - -static struct musb_hdrc_eps_bits musb_eps[] = { - { "ep1_tx", 10, }, - { "ep1_rx", 10, }, - { "ep2_tx", 9, }, - { "ep2_rx", 9, }, - { "ep3_tx", 3, }, - { "ep3_rx", 3, }, - { "ep4_tx", 3, }, - { "ep4_rx", 3, }, - { "ep5_tx", 3, }, - { "ep5_rx", 3, }, - { "ep6_tx", 3, }, - { "ep6_rx", 3, }, - { "ep7_tx", 3, }, - { "ep7_rx", 3, }, - { "ep8_tx", 2, }, - { "ep8_rx", 2, }, - { "ep9_tx", 2, }, - { "ep9_rx", 2, }, - { "ep10_tx", 2, }, - { "ep10_rx", 2, }, - { "ep11_tx", 2, }, - { "ep11_rx", 2, }, - { "ep12_tx", 2, }, - { "ep12_rx", 2, }, - { "ep13_tx", 2, }, - { "ep13_rx", 2, }, - { "ep14_tx", 2, }, - { "ep14_rx", 2, }, - { "ep15_tx", 2, }, - { "ep15_rx", 2, }, -}; - static struct musb_hdrc_config musb_config = { .multipoint = 1, .dyn_fifo = 1, - .soft_con = 1, - .dma = 1, .num_eps = 16, - .dma_channels = 7, - .dma_req_chan = (1 << 0) | (1 << 1) | (1 << 2) | (1 << 3), .ram_bits = 12, - .eps_bits = musb_eps, }; static struct musb_hdrc_platform_data musb_plat = { @@ -131,7 +158,6 @@ static struct musb_hdrc_platform_data musb_plat = { .mode = MUSB_PERIPHERAL, #endif /* .clock is set dynamically */ - .set_clock = musb_set_clock, .config = &musb_config, /* REVISIT charge pump on TWL4030 can supply up to @@ -144,7 +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, @@ -155,52 +181,43 @@ static struct platform_device musb_device = { .resource = musb_resources, }; -#ifdef CONFIG_NOP_USB_XCEIV -static u64 nop_xceiv_dmamask = DMA_BIT_MASK(32); - -static struct platform_device nop_xceiv_device = { - .name = "nop_usb_xceiv", - .id = -1, - .dev = { - .dma_mask = &nop_xceiv_dmamask, - .coherent_dma_mask = DMA_BIT_MASK(32), - .platform_data = NULL, - }, -}; -#endif - -void __init usb_musb_init(void) +void __init usb_musb_init(struct omap_musb_board_data *board_data) { - if (cpu_is_omap243x()) + if (cpu_is_omap243x()) { musb_resources[0].start = OMAP243X_HS_BASE; - else + } 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; - musb_resources[0].end = musb_resources[0].start + SZ_8K - 1; + } else if (cpu_is_omap44xx()) { + musb_resources[0].start = OMAP44XX_HSUSB_OTG_BASE; + musb_resources[1].start = OMAP44XX_IRQ_HS_USB_MC_N; + musb_resources[2].start = OMAP44XX_IRQ_HS_USB_DMA_N; + } + musb_resources[0].end = musb_resources[0].start + SZ_4K - 1; /* * REVISIT: This line can be removed once all the platforms using * musb_core.c have been converted to use use clkdev. */ musb_plat.clock = "ick"; + musb_plat.board_data = board_data; + musb_plat.power = board_data->power >> 1; + musb_plat.mode = board_data->mode; + musb_plat.extvbus = board_data->extvbus; -#ifdef CONFIG_NOP_USB_XCEIV - if (platform_device_register(&nop_xceiv_device) < 0) { - printk(KERN_ERR "Unable to register NOP-XCEIV device\n"); - return; - } -#endif - - if (platform_device_register(&musb_device) < 0) { + if (platform_device_register(&musb_device) < 0) printk(KERN_ERR "Unable to register HS-USB (MUSB) device\n"); - return; - } - - usb_musb_pm_init(); } #else -void __init usb_musb_init(void) +void __init usb_musb_init(struct omap_musb_board_data *board_data) { - usb_musb_pm_init(); } #endif /* CONFIG_USB_MUSB_SOC */ |