diff options
Diffstat (limited to 'arch/arm/mach-mmp/devices.c')
| -rw-r--r-- | arch/arm/mach-mmp/devices.c | 282 |
1 files changed, 282 insertions, 0 deletions
diff --git a/arch/arm/mach-mmp/devices.c b/arch/arm/mach-mmp/devices.c index 191d9dea8731..dd2d8b103cc8 100644 --- a/arch/arm/mach-mmp/devices.c +++ b/arch/arm/mach-mmp/devices.c @@ -9,9 +9,13 @@ #include <linux/init.h> #include <linux/platform_device.h> #include <linux/dma-mapping.h> +#include <linux/delay.h> #include <asm/irq.h> +#include <mach/irqs.h> #include <mach/devices.h> +#include <mach/cputype.h> +#include <mach/regs-usb.h> int __init pxa_register_device(struct pxa_device_desc *desc, void *data, size_t size) @@ -67,3 +71,281 @@ int __init pxa_register_device(struct pxa_device_desc *desc, return platform_device_add(pdev); } + +#if defined(CONFIG_USB) || defined(CONFIG_USB_GADGET) + +/***************************************************************************** + * The registers read/write routines + *****************************************************************************/ + +static unsigned int u2o_get(void __iomem *base, unsigned int offset) +{ + return readl_relaxed(base + offset); +} + +static void u2o_set(void __iomem *base, unsigned int offset, + unsigned int value) +{ + u32 reg; + + reg = readl_relaxed(base + offset); + reg |= value; + writel_relaxed(reg, base + offset); + readl_relaxed(base + offset); +} + +static void u2o_clear(void __iomem *base, unsigned int offset, + unsigned int value) +{ + u32 reg; + + reg = readl_relaxed(base + offset); + reg &= ~value; + writel_relaxed(reg, base + offset); + readl_relaxed(base + offset); +} + +static void u2o_write(void __iomem *base, unsigned int offset, + unsigned int value) +{ + writel_relaxed(value, base + offset); + readl_relaxed(base + offset); +} + +#if defined(CONFIG_USB_MV_UDC) || defined(CONFIG_USB_EHCI_MV) + +#if defined(CONFIG_CPU_PXA910) || defined(CONFIG_CPU_PXA168) + +static DEFINE_MUTEX(phy_lock); +static int phy_init_cnt; + +static int usb_phy_init_internal(void __iomem *base) +{ + int loops; + + pr_info("Init usb phy!!!\n"); + + /* Initialize the USB PHY power */ + if (cpu_is_pxa910()) { + u2o_set(base, UTMI_CTRL, (1<<UTMI_CTRL_INPKT_DELAY_SOF_SHIFT) + | (1<<UTMI_CTRL_PU_REF_SHIFT)); + } + + u2o_set(base, UTMI_CTRL, 1<<UTMI_CTRL_PLL_PWR_UP_SHIFT); + u2o_set(base, UTMI_CTRL, 1<<UTMI_CTRL_PWR_UP_SHIFT); + + /* UTMI_PLL settings */ + u2o_clear(base, UTMI_PLL, UTMI_PLL_PLLVDD18_MASK + | UTMI_PLL_PLLVDD12_MASK | UTMI_PLL_PLLCALI12_MASK + | UTMI_PLL_FBDIV_MASK | UTMI_PLL_REFDIV_MASK + | UTMI_PLL_ICP_MASK | UTMI_PLL_KVCO_MASK); + + u2o_set(base, UTMI_PLL, 0xee<<UTMI_PLL_FBDIV_SHIFT + | 0xb<<UTMI_PLL_REFDIV_SHIFT | 3<<UTMI_PLL_PLLVDD18_SHIFT + | 3<<UTMI_PLL_PLLVDD12_SHIFT | 3<<UTMI_PLL_PLLCALI12_SHIFT + | 1<<UTMI_PLL_ICP_SHIFT | 3<<UTMI_PLL_KVCO_SHIFT); + + /* UTMI_TX */ + u2o_clear(base, UTMI_TX, UTMI_TX_REG_EXT_FS_RCAL_EN_MASK + | UTMI_TX_TXVDD12_MASK | UTMI_TX_CK60_PHSEL_MASK + | UTMI_TX_IMPCAL_VTH_MASK | UTMI_TX_REG_EXT_FS_RCAL_MASK + | UTMI_TX_AMP_MASK); + u2o_set(base, UTMI_TX, 3<<UTMI_TX_TXVDD12_SHIFT + | 4<<UTMI_TX_CK60_PHSEL_SHIFT | 4<<UTMI_TX_IMPCAL_VTH_SHIFT + | 8<<UTMI_TX_REG_EXT_FS_RCAL_SHIFT | 3<<UTMI_TX_AMP_SHIFT); + + /* UTMI_RX */ + u2o_clear(base, UTMI_RX, UTMI_RX_SQ_THRESH_MASK + | UTMI_REG_SQ_LENGTH_MASK); + u2o_set(base, UTMI_RX, 7<<UTMI_RX_SQ_THRESH_SHIFT + | 2<<UTMI_REG_SQ_LENGTH_SHIFT); + + /* UTMI_IVREF */ + if (cpu_is_pxa168()) + /* fixing Microsoft Altair board interface with NEC hub issue - + * Set UTMI_IVREF from 0x4a3 to 0x4bf */ + u2o_write(base, UTMI_IVREF, 0x4bf); + + /* toggle VCOCAL_START bit of UTMI_PLL */ + udelay(200); + u2o_set(base, UTMI_PLL, VCOCAL_START); + udelay(40); + u2o_clear(base, UTMI_PLL, VCOCAL_START); + + /* toggle REG_RCAL_START bit of UTMI_TX */ + udelay(400); + u2o_set(base, UTMI_TX, REG_RCAL_START); + udelay(40); + u2o_clear(base, UTMI_TX, REG_RCAL_START); + udelay(400); + + /* Make sure PHY PLL is ready */ + loops = 0; + while ((u2o_get(base, UTMI_PLL) & PLL_READY) == 0) { + mdelay(1); + loops++; + if (loops > 100) { + printk(KERN_WARNING "calibrate timeout, UTMI_PLL %x\n", + u2o_get(base, UTMI_PLL)); + break; + } + } + + if (cpu_is_pxa168()) { + u2o_set(base, UTMI_RESERVE, 1 << 5); + /* Turn on UTMI PHY OTG extension */ + u2o_write(base, UTMI_OTG_ADDON, 1); + } + + return 0; +} + +static int usb_phy_deinit_internal(void __iomem *base) +{ + pr_info("Deinit usb phy!!!\n"); + + if (cpu_is_pxa168()) + u2o_clear(base, UTMI_OTG_ADDON, UTMI_OTG_ADDON_OTG_ON); + + u2o_clear(base, UTMI_CTRL, UTMI_CTRL_RXBUF_PDWN); + u2o_clear(base, UTMI_CTRL, UTMI_CTRL_TXBUF_PDWN); + u2o_clear(base, UTMI_CTRL, UTMI_CTRL_USB_CLK_EN); + u2o_clear(base, UTMI_CTRL, 1<<UTMI_CTRL_PWR_UP_SHIFT); + u2o_clear(base, UTMI_CTRL, 1<<UTMI_CTRL_PLL_PWR_UP_SHIFT); + + return 0; +} + +int pxa_usb_phy_init(void __iomem *phy_reg) +{ + mutex_lock(&phy_lock); + if (phy_init_cnt++ == 0) + usb_phy_init_internal(phy_reg); + mutex_unlock(&phy_lock); + return 0; +} + +void pxa_usb_phy_deinit(void __iomem *phy_reg) +{ + WARN_ON(phy_init_cnt == 0); + + mutex_lock(&phy_lock); + if (--phy_init_cnt == 0) + usb_phy_deinit_internal(phy_reg); + mutex_unlock(&phy_lock); +} +#endif +#endif +#endif + +#ifdef CONFIG_USB_SUPPORT +static u64 usb_dma_mask = ~(u32)0; + +#ifdef CONFIG_USB_MV_UDC +struct resource pxa168_u2o_resources[] = { + /* regbase */ + [0] = { + .start = PXA168_U2O_REGBASE + U2x_CAPREGS_OFFSET, + .end = PXA168_U2O_REGBASE + USB_REG_RANGE, + .flags = IORESOURCE_MEM, + .name = "capregs", + }, + /* phybase */ + [1] = { + .start = PXA168_U2O_PHYBASE, + .end = PXA168_U2O_PHYBASE + USB_PHY_RANGE, + .flags = IORESOURCE_MEM, + .name = "phyregs", + }, + [2] = { + .start = IRQ_PXA168_USB1, + .end = IRQ_PXA168_USB1, + .flags = IORESOURCE_IRQ, + }, +}; + +struct platform_device pxa168_device_u2o = { + .name = "mv-udc", + .id = -1, + .resource = pxa168_u2o_resources, + .num_resources = ARRAY_SIZE(pxa168_u2o_resources), + .dev = { + .dma_mask = &usb_dma_mask, + .coherent_dma_mask = 0xffffffff, + } +}; +#endif /* CONFIG_USB_MV_UDC */ + +#ifdef CONFIG_USB_EHCI_MV_U2O +struct resource pxa168_u2oehci_resources[] = { + /* regbase */ + [0] = { + .start = PXA168_U2O_REGBASE + U2x_CAPREGS_OFFSET, + .end = PXA168_U2O_REGBASE + USB_REG_RANGE, + .flags = IORESOURCE_MEM, + .name = "capregs", + }, + /* phybase */ + [1] = { + .start = PXA168_U2O_PHYBASE, + .end = PXA168_U2O_PHYBASE + USB_PHY_RANGE, + .flags = IORESOURCE_MEM, + .name = "phyregs", + }, + [2] = { + .start = IRQ_PXA168_USB1, + .end = IRQ_PXA168_USB1, + .flags = IORESOURCE_IRQ, + }, +}; + +struct platform_device pxa168_device_u2oehci = { + .name = "pxa-u2oehci", + .id = -1, + .dev = { + .dma_mask = &usb_dma_mask, + .coherent_dma_mask = 0xffffffff, + }, + + .num_resources = ARRAY_SIZE(pxa168_u2oehci_resources), + .resource = pxa168_u2oehci_resources, +}; +#endif + +#if defined(CONFIG_USB_MV_OTG) +struct resource pxa168_u2ootg_resources[] = { + /* regbase */ + [0] = { + .start = PXA168_U2O_REGBASE + U2x_CAPREGS_OFFSET, + .end = PXA168_U2O_REGBASE + USB_REG_RANGE, + .flags = IORESOURCE_MEM, + .name = "capregs", + }, + /* phybase */ + [1] = { + .start = PXA168_U2O_PHYBASE, + .end = PXA168_U2O_PHYBASE + USB_PHY_RANGE, + .flags = IORESOURCE_MEM, + .name = "phyregs", + }, + [2] = { + .start = IRQ_PXA168_USB1, + .end = IRQ_PXA168_USB1, + .flags = IORESOURCE_IRQ, + }, +}; + +struct platform_device pxa168_device_u2ootg = { + .name = "mv-otg", + .id = -1, + .dev = { + .dma_mask = &usb_dma_mask, + .coherent_dma_mask = 0xffffffff, + }, + + .num_resources = ARRAY_SIZE(pxa168_u2ootg_resources), + .resource = pxa168_u2ootg_resources, +}; +#endif /* CONFIG_USB_MV_OTG */ + +#endif |
