ARM: mmp: add usb device support for PXA910
Add usb device support for Marvell PXA910.
Actually PXA920 will use the same device.
Signed-off-by: Neil Zhang <zhangwm@marvell.com>
Signed-off-by: Haojian Zhuang <haojian.zhuang@gmail.com>
diff --git a/arch/arm/mach-mmp/devices.c b/arch/arm/mach-mmp/devices.c
index 191d9de..262179f 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 @@
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)
+
+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