--- /dev/null
+/**
+ * omap-usb-host.c - The USBHS core driver for OMAP EHCI & OHCI
+ *
+ * Copyright (C) 2011 Texas Instruments Incorporated - http://www.ti.com
+ * Author: Keshava Munegowda <keshava_mgowda@ti.com>
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License version 2 of
+ * the License as published by the Free Software Foundation.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program. If not, see <http://www.gnu.org/licenses/>.
+ */
+#include <linux/kernel.h>
+#include <linux/types.h>
+#include <linux/slab.h>
+#include <linux/delay.h>
+#include <linux/platform_device.h>
+#include <linux/clk.h>
+#include <linux/dma-mapping.h>
+#include <linux/spinlock.h>
+#include <linux/gpio.h>
+#include <linux/regulator/consumer.h>
+#include <plat/usb.h>
+
+#define USBHS_DRIVER_NAME "usbhs-omap"
+#define OMAP_EHCI_DEVICE "ehci-omap"
+#define OMAP_OHCI_DEVICE "ohci-omap3"
+
+/* OMAP USBHOST Register addresses */
+
+/* TLL Register Set */
+#define OMAP_USBTLL_REVISION (0x00)
+#define OMAP_USBTLL_SYSCONFIG (0x10)
+#define OMAP_USBTLL_SYSCONFIG_CACTIVITY (1 << 8)
+#define OMAP_USBTLL_SYSCONFIG_SIDLEMODE (1 << 3)
+#define OMAP_USBTLL_SYSCONFIG_ENAWAKEUP (1 << 2)
+#define OMAP_USBTLL_SYSCONFIG_SOFTRESET (1 << 1)
+#define OMAP_USBTLL_SYSCONFIG_AUTOIDLE (1 << 0)
+
+#define OMAP_USBTLL_SYSSTATUS (0x14)
+#define OMAP_USBTLL_SYSSTATUS_RESETDONE (1 << 0)
+
+#define OMAP_USBTLL_IRQSTATUS (0x18)
+#define OMAP_USBTLL_IRQENABLE (0x1C)
+
+#define OMAP_TLL_SHARED_CONF (0x30)
+#define OMAP_TLL_SHARED_CONF_USB_90D_DDR_EN (1 << 6)
+#define OMAP_TLL_SHARED_CONF_USB_180D_SDR_EN (1 << 5)
+#define OMAP_TLL_SHARED_CONF_USB_DIVRATION (1 << 2)
+#define OMAP_TLL_SHARED_CONF_FCLK_REQ (1 << 1)
+#define OMAP_TLL_SHARED_CONF_FCLK_IS_ON (1 << 0)
+
+#define OMAP_TLL_CHANNEL_CONF(num) (0x040 + 0x004 * num)
+#define OMAP_TLL_CHANNEL_CONF_FSLSMODE_SHIFT 24
+#define OMAP_TLL_CHANNEL_CONF_ULPINOBITSTUFF (1 << 11)
+#define OMAP_TLL_CHANNEL_CONF_ULPI_ULPIAUTOIDLE (1 << 10)
+#define OMAP_TLL_CHANNEL_CONF_UTMIAUTOIDLE (1 << 9)
+#define OMAP_TLL_CHANNEL_CONF_ULPIDDRMODE (1 << 8)
+#define OMAP_TLL_CHANNEL_CONF_CHANMODE_FSLS (1 << 1)
+#define OMAP_TLL_CHANNEL_CONF_CHANEN (1 << 0)
+
+#define OMAP_TLL_FSLSMODE_6PIN_PHY_DAT_SE0 0x0
+#define OMAP_TLL_FSLSMODE_6PIN_PHY_DP_DM 0x1
+#define OMAP_TLL_FSLSMODE_3PIN_PHY 0x2
+#define OMAP_TLL_FSLSMODE_4PIN_PHY 0x3
+#define OMAP_TLL_FSLSMODE_6PIN_TLL_DAT_SE0 0x4
+#define OMAP_TLL_FSLSMODE_6PIN_TLL_DP_DM 0x5
+#define OMAP_TLL_FSLSMODE_3PIN_TLL 0x6
+#define OMAP_TLL_FSLSMODE_4PIN_TLL 0x7
+#define OMAP_TLL_FSLSMODE_2PIN_TLL_DAT_SE0 0xA
+#define OMAP_TLL_FSLSMODE_2PIN_DAT_DP_DM 0xB
+
+#define OMAP_TLL_ULPI_FUNCTION_CTRL(num) (0x804 + 0x100 * num)
+#define OMAP_TLL_ULPI_INTERFACE_CTRL(num) (0x807 + 0x100 * num)
+#define OMAP_TLL_ULPI_OTG_CTRL(num) (0x80A + 0x100 * num)
+#define OMAP_TLL_ULPI_INT_EN_RISE(num) (0x80D + 0x100 * num)
+#define OMAP_TLL_ULPI_INT_EN_FALL(num) (0x810 + 0x100 * num)
+#define OMAP_TLL_ULPI_INT_STATUS(num) (0x813 + 0x100 * num)
+#define OMAP_TLL_ULPI_INT_LATCH(num) (0x814 + 0x100 * num)
+#define OMAP_TLL_ULPI_DEBUG(num) (0x815 + 0x100 * num)
+#define OMAP_TLL_ULPI_SCRATCH_REGISTER(num) (0x816 + 0x100 * num)
+
+#define OMAP_TLL_CHANNEL_COUNT 3
+#define OMAP_TLL_CHANNEL_1_EN_MASK (1 << 0)
+#define OMAP_TLL_CHANNEL_2_EN_MASK (1 << 1)
+#define OMAP_TLL_CHANNEL_3_EN_MASK (1 << 2)
+
+/* UHH Register Set */
+#define OMAP_UHH_REVISION (0x00)
+#define OMAP_UHH_SYSCONFIG (0x10)
+#define OMAP_UHH_SYSCONFIG_MIDLEMODE (1 << 12)
+#define OMAP_UHH_SYSCONFIG_CACTIVITY (1 << 8)
+#define OMAP_UHH_SYSCONFIG_SIDLEMODE (1 << 3)
+#define OMAP_UHH_SYSCONFIG_ENAWAKEUP (1 << 2)
+#define OMAP_UHH_SYSCONFIG_SOFTRESET (1 << 1)
+#define OMAP_UHH_SYSCONFIG_AUTOIDLE (1 << 0)
+
+#define OMAP_UHH_SYSSTATUS (0x14)
+#define OMAP_UHH_HOSTCONFIG (0x40)
+#define OMAP_UHH_HOSTCONFIG_ULPI_BYPASS (1 << 0)
+#define OMAP_UHH_HOSTCONFIG_ULPI_P1_BYPASS (1 << 0)
+#define OMAP_UHH_HOSTCONFIG_ULPI_P2_BYPASS (1 << 11)
+#define OMAP_UHH_HOSTCONFIG_ULPI_P3_BYPASS (1 << 12)
+#define OMAP_UHH_HOSTCONFIG_INCR4_BURST_EN (1 << 2)
+#define OMAP_UHH_HOSTCONFIG_INCR8_BURST_EN (1 << 3)
+#define OMAP_UHH_HOSTCONFIG_INCR16_BURST_EN (1 << 4)
+#define OMAP_UHH_HOSTCONFIG_INCRX_ALIGN_EN (1 << 5)
+#define OMAP_UHH_HOSTCONFIG_P1_CONNECT_STATUS (1 << 8)
+#define OMAP_UHH_HOSTCONFIG_P2_CONNECT_STATUS (1 << 9)
+#define OMAP_UHH_HOSTCONFIG_P3_CONNECT_STATUS (1 << 10)
+#define OMAP4_UHH_HOSTCONFIG_APP_START_CLK (1 << 31)
+
+/* OMAP4-specific defines */
+#define OMAP4_UHH_SYSCONFIG_IDLEMODE_CLEAR (3 << 2)
+#define OMAP4_UHH_SYSCONFIG_NOIDLE (1 << 2)
+#define OMAP4_UHH_SYSCONFIG_STDBYMODE_CLEAR (3 << 4)
+#define OMAP4_UHH_SYSCONFIG_NOSTDBY (1 << 4)
+#define OMAP4_UHH_SYSCONFIG_SOFTRESET (1 << 0)
+
+#define OMAP4_P1_MODE_CLEAR (3 << 16)
+#define OMAP4_P1_MODE_TLL (1 << 16)
+#define OMAP4_P1_MODE_HSIC (3 << 16)
+#define OMAP4_P2_MODE_CLEAR (3 << 18)
+#define OMAP4_P2_MODE_TLL (1 << 18)
+#define OMAP4_P2_MODE_HSIC (3 << 18)
+
+#define OMAP_REV2_TLL_CHANNEL_COUNT 2
+
+#define OMAP_UHH_DEBUG_CSR (0x44)
+
+/* Values of UHH_REVISION - Note: these are not given in the TRM */
+#define OMAP_USBHS_REV1 0x00000010 /* OMAP3 */
+#define OMAP_USBHS_REV2 0x50700100 /* OMAP4 */
+
+#define is_omap_usbhs_rev1(x) (x->usbhs_rev == OMAP_USBHS_REV1)
+#define is_omap_usbhs_rev2(x) (x->usbhs_rev == OMAP_USBHS_REV2)
+
+#define is_ehci_phy_mode(x) (x == OMAP_EHCI_PORT_MODE_PHY)
+#define is_ehci_tll_mode(x) (x == OMAP_EHCI_PORT_MODE_TLL)
+#define is_ehci_hsic_mode(x) (x == OMAP_EHCI_PORT_MODE_HSIC)
+
+
+struct usbhs_hcd_omap {
+ struct clk *usbhost_ick;
+ struct clk *usbhost_hs_fck;
+ struct clk *usbhost_fs_fck;
+ struct clk *xclk60mhsp1_ck;
+ struct clk *xclk60mhsp2_ck;
+ struct clk *utmi_p1_fck;
+ struct clk *usbhost_p1_fck;
+ struct clk *usbtll_p1_fck;
+ struct clk *utmi_p2_fck;
+ struct clk *usbhost_p2_fck;
+ struct clk *usbtll_p2_fck;
+ struct clk *init_60m_fclk;
+ struct clk *usbtll_fck;
+ struct clk *usbtll_ick;
+
+ void __iomem *uhh_base;
+ void __iomem *tll_base;
+
+ struct usbhs_omap_platform_data platdata;
+
+ u32 usbhs_rev;
+ spinlock_t lock;
+ int count;
+};
+/*-------------------------------------------------------------------------*/
+
+const char usbhs_driver_name[] = USBHS_DRIVER_NAME;
+static u64 usbhs_dmamask = ~(u32)0;
+
+/*-------------------------------------------------------------------------*/
+
+static inline void usbhs_write(void __iomem *base, u32 reg, u32 val)
+{
+ __raw_writel(val, base + reg);
+}
+
+static inline u32 usbhs_read(void __iomem *base, u32 reg)
+{
+ return __raw_readl(base + reg);
+}
+
+static inline void usbhs_writeb(void __iomem *base, u8 reg, u8 val)
+{
+ __raw_writeb(val, base + reg);
+}
+
+static inline u8 usbhs_readb(void __iomem *base, u8 reg)
+{
+ return __raw_readb(base + reg);
+}
+
+/*-------------------------------------------------------------------------*/
+
+static struct platform_device *omap_usbhs_alloc_child(const char *name,
+ struct resource *res, int num_resources, void *pdata,
+ size_t pdata_size, struct device *dev)
+{
+ struct platform_device *child;
+ int ret;
+
+ child = platform_device_alloc(name, 0);
+
+ if (!child) {
+ dev_err(dev, "platform_device_alloc %s failed\n", name);
+ goto err_end;
+ }
+
+ ret = platform_device_add_resources(child, res, num_resources);
+ if (ret) {
+ dev_err(dev, "platform_device_add_resources failed\n");
+ goto err_alloc;
+ }
+
+ ret = platform_device_add_data(child, pdata, pdata_size);
+ if (ret) {
+ dev_err(dev, "platform_device_add_data failed\n");
+ goto err_alloc;
+ }
+
+ child->dev.dma_mask = &usbhs_dmamask;
+ child->dev.coherent_dma_mask = 0xffffffff;
+ child->dev.parent = dev;
+
+ ret = platform_device_add(child);
+ if (ret) {
+ dev_err(dev, "platform_device_add failed\n");
+ goto err_alloc;
+ }
+
+ return child;
+
+err_alloc:
+ platform_device_put(child);
+
+err_end:
+ return NULL;
+}
+
+static int omap_usbhs_alloc_children(struct platform_device *pdev)
+{
+ struct device *dev = &pdev->dev;
+ struct usbhs_hcd_omap *omap;
+ struct ehci_hcd_omap_platform_data *ehci_data;
+ struct ohci_hcd_omap_platform_data *ohci_data;
+ struct platform_device *ehci;
+ struct platform_device *ohci;
+ struct resource *res;
+ struct resource resources[2];
+ int ret;
+
+ omap = platform_get_drvdata(pdev);
+ ehci_data = omap->platdata.ehci_data;
+ ohci_data = omap->platdata.ohci_data;
+
+ res = platform_get_resource_byname(pdev, IORESOURCE_MEM, "ehci");
+ if (!res) {
+ dev_err(dev, "EHCI get resource IORESOURCE_MEM failed\n");
+ ret = -ENODEV;
+ goto err_end;
+ }
+ resources[0] = *res;
+
+ res = platform_get_resource_byname(pdev, IORESOURCE_IRQ, "ehci-irq");
+ if (!res) {
+ dev_err(dev, " EHCI get resource IORESOURCE_IRQ failed\n");
+ ret = -ENODEV;
+ goto err_end;
+ }
+ resources[1] = *res;
+
+ ehci = omap_usbhs_alloc_child(OMAP_EHCI_DEVICE, resources, 2, ehci_data,
+ sizeof(*ehci_data), dev);
+
+ if (!ehci) {
+ dev_err(dev, "omap_usbhs_alloc_child failed\n");
+ goto err_end;
+ }
+
+ res = platform_get_resource_byname(pdev, IORESOURCE_MEM, "ohci");
+ if (!res) {
+ dev_err(dev, "OHCI get resource IORESOURCE_MEM failed\n");
+ ret = -ENODEV;
+ goto err_ehci;
+ }
+ resources[0] = *res;
+
+ res = platform_get_resource_byname(pdev, IORESOURCE_IRQ, "ohci-irq");
+ if (!res) {
+ dev_err(dev, "OHCI get resource IORESOURCE_IRQ failed\n");
+ ret = -ENODEV;
+ goto err_ehci;
+ }
+ resources[1] = *res;
+
+ ohci = omap_usbhs_alloc_child(OMAP_OHCI_DEVICE, resources, 2, ohci_data,
+ sizeof(*ohci_data), dev);
+ if (!ohci) {
+ dev_err(dev, "omap_usbhs_alloc_child failed\n");
+ goto err_ehci;
+ }
+
+ return 0;
+
+err_ehci:
+ platform_device_put(ehci);
+
+err_end:
+ return ret;
+}
+
+/**
+ * usbhs_omap_probe - initialize TI-based HCDs
+ *
+ * Allocates basic resources for this USB host controller.
+ */
+static int __devinit usbhs_omap_probe(struct platform_device *pdev)
+{
+ struct device *dev = &pdev->dev;
+ struct usbhs_omap_platform_data *pdata = dev->platform_data;
+ struct usbhs_hcd_omap *omap;
+ struct resource *res;
+ int ret = 0;
+ int i;
+
+ if (!pdata) {
+ dev_err(dev, "Missing platfrom data\n");
+ ret = -ENOMEM;
+ goto end_probe;
+ }
+
+ omap = kzalloc(sizeof(*omap), GFP_KERNEL);
+ if (!omap) {
+ dev_err(dev, "Memory allocation failed\n");
+ ret = -ENOMEM;
+ goto end_probe;
+ }
+
+ spin_lock_init(&omap->lock);
+
+ for (i = 0; i < OMAP3_HS_USB_PORTS; i++)
+ omap->platdata.port_mode[i] = pdata->port_mode[i];
+
+ omap->platdata.ehci_data = pdata->ehci_data;
+ omap->platdata.ohci_data = pdata->ohci_data;
+
+ omap->usbhost_ick = clk_get(dev, "usbhost_ick");
+ if (IS_ERR(omap->usbhost_ick)) {
+ ret = PTR_ERR(omap->usbhost_ick);
+ dev_err(dev, "usbhost_ick failed error:%d\n", ret);
+ goto err_end;
+ }
+
+ omap->usbhost_hs_fck = clk_get(dev, "hs_fck");
+ if (IS_ERR(omap->usbhost_hs_fck)) {
+ ret = PTR_ERR(omap->usbhost_hs_fck);
+ dev_err(dev, "usbhost_hs_fck failed error:%d\n", ret);
+ goto err_usbhost_ick;
+ }
+
+ omap->usbhost_fs_fck = clk_get(dev, "fs_fck");
+ if (IS_ERR(omap->usbhost_fs_fck)) {
+ ret = PTR_ERR(omap->usbhost_fs_fck);
+ dev_err(dev, "usbhost_fs_fck failed error:%d\n", ret);
+ goto err_usbhost_hs_fck;
+ }
+
+ omap->usbtll_fck = clk_get(dev, "usbtll_fck");
+ if (IS_ERR(omap->usbtll_fck)) {
+ ret = PTR_ERR(omap->usbtll_fck);
+ dev_err(dev, "usbtll_fck failed error:%d\n", ret);
+ goto err_usbhost_fs_fck;
+ }
+
+ omap->usbtll_ick = clk_get(dev, "usbtll_ick");
+ if (IS_ERR(omap->usbtll_ick)) {
+ ret = PTR_ERR(omap->usbtll_ick);
+ dev_err(dev, "usbtll_ick failed error:%d\n", ret);
+ goto err_usbtll_fck;
+ }
+
+ omap->utmi_p1_fck = clk_get(dev, "utmi_p1_gfclk");
+ if (IS_ERR(omap->utmi_p1_fck)) {
+ ret = PTR_ERR(omap->utmi_p1_fck);
+ dev_err(dev, "utmi_p1_gfclk failed error:%d\n", ret);
+ goto err_usbtll_ick;
+ }
+
+ omap->xclk60mhsp1_ck = clk_get(dev, "xclk60mhsp1_ck");
+ if (IS_ERR(omap->xclk60mhsp1_ck)) {
+ ret = PTR_ERR(omap->xclk60mhsp1_ck);
+ dev_err(dev, "xclk60mhsp1_ck failed error:%d\n", ret);
+ goto err_utmi_p1_fck;
+ }
+
+ omap->utmi_p2_fck = clk_get(dev, "utmi_p2_gfclk");
+ if (IS_ERR(omap->utmi_p2_fck)) {
+ ret = PTR_ERR(omap->utmi_p2_fck);
+ dev_err(dev, "utmi_p2_gfclk failed error:%d\n", ret);
+ goto err_xclk60mhsp1_ck;
+ }
+
+ omap->xclk60mhsp2_ck = clk_get(dev, "xclk60mhsp2_ck");
+ if (IS_ERR(omap->xclk60mhsp2_ck)) {
+ ret = PTR_ERR(omap->xclk60mhsp2_ck);
+ dev_err(dev, "xclk60mhsp2_ck failed error:%d\n", ret);
+ goto err_utmi_p2_fck;
+ }
+
+ omap->usbhost_p1_fck = clk_get(dev, "usb_host_hs_utmi_p1_clk");
+ if (IS_ERR(omap->usbhost_p1_fck)) {
+ ret = PTR_ERR(omap->usbhost_p1_fck);
+ dev_err(dev, "usbhost_p1_fck failed error:%d\n", ret);
+ goto err_xclk60mhsp2_ck;
+ }
+
+ omap->usbtll_p1_fck = clk_get(dev, "usb_tll_hs_usb_ch0_clk");
+ if (IS_ERR(omap->usbtll_p1_fck)) {
+ ret = PTR_ERR(omap->usbtll_p1_fck);
+ dev_err(dev, "usbtll_p1_fck failed error:%d\n", ret);
+ goto err_usbhost_p1_fck;
+ }
+
+ omap->usbhost_p2_fck = clk_get(dev, "usb_host_hs_utmi_p2_clk");
+ if (IS_ERR(omap->usbhost_p2_fck)) {
+ ret = PTR_ERR(omap->usbhost_p2_fck);
+ dev_err(dev, "usbhost_p2_fck failed error:%d\n", ret);
+ goto err_usbtll_p1_fck;
+ }
+
+ omap->usbtll_p2_fck = clk_get(dev, "usb_tll_hs_usb_ch1_clk");
+ if (IS_ERR(omap->usbtll_p2_fck)) {
+ ret = PTR_ERR(omap->usbtll_p2_fck);
+ dev_err(dev, "usbtll_p2_fck failed error:%d\n", ret);
+ goto err_usbhost_p2_fck;
+ }
+
+ omap->init_60m_fclk = clk_get(dev, "init_60m_fclk");
+ if (IS_ERR(omap->init_60m_fclk)) {
+ ret = PTR_ERR(omap->init_60m_fclk);
+ dev_err(dev, "init_60m_fclk failed error:%d\n", ret);
+ goto err_usbtll_p2_fck;
+ }
+
+ res = platform_get_resource_byname(pdev, IORESOURCE_MEM, "uhh");
+ if (!res) {
+ dev_err(dev, "UHH EHCI get resource failed\n");
+ ret = -ENODEV;
+ goto err_init_60m_fclk;
+ }
+
+ omap->uhh_base = ioremap(res->start, resource_size(res));
+ if (!omap->uhh_base) {
+ dev_err(dev, "UHH ioremap failed\n");
+ ret = -ENOMEM;
+ goto err_init_60m_fclk;
+ }
+
+ res = platform_get_resource_byname(pdev, IORESOURCE_MEM, "tll");
+ if (!res) {
+ dev_err(dev, "UHH EHCI get resource failed\n");
+ ret = -ENODEV;
+ goto err_tll;
+ }
+
+ omap->tll_base = ioremap(res->start, resource_size(res));
+ if (!omap->tll_base) {
+ dev_err(dev, "TLL ioremap failed\n");
+ ret = -ENOMEM;
+ goto err_tll;
+ }
+
+ platform_set_drvdata(pdev, omap);
+
+ ret = omap_usbhs_alloc_children(pdev);
+ if (ret) {
+ dev_err(dev, "omap_usbhs_alloc_children failed\n");
+ goto err_alloc;
+ }
+
+ goto end_probe;
+
+err_alloc:
+ iounmap(omap->tll_base);
+
+err_tll:
+ iounmap(omap->uhh_base);
+
+err_init_60m_fclk:
+ clk_put(omap->init_60m_fclk);
+
+err_usbtll_p2_fck:
+ clk_put(omap->usbtll_p2_fck);
+
+err_usbhost_p2_fck:
+ clk_put(omap->usbhost_p2_fck);
+
+err_usbtll_p1_fck:
+ clk_put(omap->usbtll_p1_fck);
+
+err_usbhost_p1_fck:
+ clk_put(omap->usbhost_p1_fck);
+
+err_xclk60mhsp2_ck:
+ clk_put(omap->xclk60mhsp2_ck);
+
+err_utmi_p2_fck:
+ clk_put(omap->utmi_p2_fck);
+
+err_xclk60mhsp1_ck:
+ clk_put(omap->xclk60mhsp1_ck);
+
+err_utmi_p1_fck:
+ clk_put(omap->utmi_p1_fck);
+
+err_usbtll_ick:
+ clk_put(omap->usbtll_ick);
+
+err_usbtll_fck:
+ clk_put(omap->usbtll_fck);
+
+err_usbhost_fs_fck:
+ clk_put(omap->usbhost_fs_fck);
+
+err_usbhost_hs_fck:
+ clk_put(omap->usbhost_hs_fck);
+
+err_usbhost_ick:
+ clk_put(omap->usbhost_ick);
+
+err_end:
+ kfree(omap);
+
+end_probe:
+ return ret;
+}
+
+/**
+ * usbhs_omap_remove - shutdown processing for UHH & TLL HCDs
+ * @pdev: USB Host Controller being removed
+ *
+ * Reverses the effect of usbhs_omap_probe().
+ */
+static int __devexit usbhs_omap_remove(struct platform_device *pdev)
+{
+ struct usbhs_hcd_omap *omap = platform_get_drvdata(pdev);
+
+ if (omap->count != 0) {
+ dev_err(&pdev->dev,
+ "Either EHCI or OHCI is still using usbhs core\n");
+ return -EBUSY;
+ }
+
+ iounmap(omap->tll_base);
+ iounmap(omap->uhh_base);
+ clk_put(omap->init_60m_fclk);
+ clk_put(omap->usbtll_p2_fck);
+ clk_put(omap->usbhost_p2_fck);
+ clk_put(omap->usbtll_p1_fck);
+ clk_put(omap->usbhost_p1_fck);
+ clk_put(omap->xclk60mhsp2_ck);
+ clk_put(omap->utmi_p2_fck);
+ clk_put(omap->xclk60mhsp1_ck);
+ clk_put(omap->utmi_p1_fck);
+ clk_put(omap->usbtll_ick);
+ clk_put(omap->usbtll_fck);
+ clk_put(omap->usbhost_fs_fck);
+ clk_put(omap->usbhost_hs_fck);
+ clk_put(omap->usbhost_ick);
+ kfree(omap);
+
+ return 0;
+}
+
+static bool is_ohci_port(enum usbhs_omap_port_mode pmode)
+{
+ switch (pmode) {
+ case OMAP_OHCI_PORT_MODE_PHY_6PIN_DATSE0:
+ case OMAP_OHCI_PORT_MODE_PHY_6PIN_DPDM:
+ case OMAP_OHCI_PORT_MODE_PHY_3PIN_DATSE0:
+ case OMAP_OHCI_PORT_MODE_PHY_4PIN_DPDM:
+ case OMAP_OHCI_PORT_MODE_TLL_6PIN_DATSE0:
+ case OMAP_OHCI_PORT_MODE_TLL_6PIN_DPDM:
+ case OMAP_OHCI_PORT_MODE_TLL_3PIN_DATSE0:
+ case OMAP_OHCI_PORT_MODE_TLL_4PIN_DPDM:
+ case OMAP_OHCI_PORT_MODE_TLL_2PIN_DATSE0:
+ case OMAP_OHCI_PORT_MODE_TLL_2PIN_DPDM:
+ return true;
+
+ default:
+ return false;
+ }
+}
+
+/*
+ * convert the port-mode enum to a value we can use in the FSLSMODE
+ * field of USBTLL_CHANNEL_CONF
+ */
+static unsigned ohci_omap3_fslsmode(enum usbhs_omap_port_mode mode)
+{
+ switch (mode) {
+ case OMAP_USBHS_PORT_MODE_UNUSED:
+ case OMAP_OHCI_PORT_MODE_PHY_6PIN_DATSE0:
+ return OMAP_TLL_FSLSMODE_6PIN_PHY_DAT_SE0;
+
+ case OMAP_OHCI_PORT_MODE_PHY_6PIN_DPDM:
+ return OMAP_TLL_FSLSMODE_6PIN_PHY_DP_DM;
+
+ case OMAP_OHCI_PORT_MODE_PHY_3PIN_DATSE0:
+ return OMAP_TLL_FSLSMODE_3PIN_PHY;
+
+ case OMAP_OHCI_PORT_MODE_PHY_4PIN_DPDM:
+ return OMAP_TLL_FSLSMODE_4PIN_PHY;
+
+ case OMAP_OHCI_PORT_MODE_TLL_6PIN_DATSE0:
+ return OMAP_TLL_FSLSMODE_6PIN_TLL_DAT_SE0;
+
+ case OMAP_OHCI_PORT_MODE_TLL_6PIN_DPDM:
+ return OMAP_TLL_FSLSMODE_6PIN_TLL_DP_DM;
+
+ case OMAP_OHCI_PORT_MODE_TLL_3PIN_DATSE0:
+ return OMAP_TLL_FSLSMODE_3PIN_TLL;
+
+ case OMAP_OHCI_PORT_MODE_TLL_4PIN_DPDM:
+ return OMAP_TLL_FSLSMODE_4PIN_TLL;
+
+ case OMAP_OHCI_PORT_MODE_TLL_2PIN_DATSE0:
+ return OMAP_TLL_FSLSMODE_2PIN_TLL_DAT_SE0;
+
+ case OMAP_OHCI_PORT_MODE_TLL_2PIN_DPDM:
+ return OMAP_TLL_FSLSMODE_2PIN_DAT_DP_DM;
+ default:
+ pr_warning("Invalid port mode, using default\n");
+ return OMAP_TLL_FSLSMODE_6PIN_PHY_DAT_SE0;
+ }
+}
+
+static void usbhs_omap_tll_init(struct device *dev, u8 tll_channel_count)
+{
+ struct usbhs_hcd_omap *omap = dev_get_drvdata(dev);
+ struct usbhs_omap_platform_data *pdata = dev->platform_data;
+ unsigned reg;
+ int i;
+
+ /* Program Common TLL register */
+ reg = usbhs_read(omap->tll_base, OMAP_TLL_SHARED_CONF);
+ reg |= (OMAP_TLL_SHARED_CONF_FCLK_IS_ON
+ | OMAP_TLL_SHARED_CONF_USB_DIVRATION);
+ reg &= ~OMAP_TLL_SHARED_CONF_USB_90D_DDR_EN;
+ reg &= ~OMAP_TLL_SHARED_CONF_USB_180D_SDR_EN;
+
+ usbhs_write(omap->tll_base, OMAP_TLL_SHARED_CONF, reg);
+
+ /* Enable channels now */
+ for (i = 0; i < tll_channel_count; i++) {
+ reg = usbhs_read(omap->tll_base,
+ OMAP_TLL_CHANNEL_CONF(i));
+
+ if (is_ohci_port(pdata->port_mode[i])) {
+ reg |= ohci_omap3_fslsmode(pdata->port_mode[i])
+ << OMAP_TLL_CHANNEL_CONF_FSLSMODE_SHIFT;
+ reg |= OMAP_TLL_CHANNEL_CONF_CHANMODE_FSLS;
+ } else if (pdata->port_mode[i] == OMAP_EHCI_PORT_MODE_TLL) {
+
+ /* Disable AutoIdle, BitStuffing and use SDR Mode */
+ reg &= ~(OMAP_TLL_CHANNEL_CONF_UTMIAUTOIDLE
+ | OMAP_TLL_CHANNEL_CONF_ULPINOBITSTUFF
+ | OMAP_TLL_CHANNEL_CONF_ULPIDDRMODE);
+
+ reg |= (1 << (i + 1));
+ } else
+ continue;
+
+ reg |= OMAP_TLL_CHANNEL_CONF_CHANEN;
+ usbhs_write(omap->tll_base,
+ OMAP_TLL_CHANNEL_CONF(i), reg);
+
+ usbhs_writeb(omap->tll_base,
+ OMAP_TLL_ULPI_SCRATCH_REGISTER(i), 0xbe);
+ }
+}
+
+static int usbhs_enable(struct device *dev)
+{
+ struct usbhs_hcd_omap *omap = dev_get_drvdata(dev);
+ struct usbhs_omap_platform_data *pdata = &omap->platdata;
+ unsigned long flags = 0;
+ int ret = 0;
+ unsigned long timeout;
+ unsigned reg;
+
+ dev_dbg(dev, "starting TI HSUSB Controller\n");
+ if (!pdata) {
+ dev_dbg(dev, "missing platform_data\n");
+ ret = -ENODEV;
+ goto end_enable;
+ }
+
+ spin_lock_irqsave(&omap->lock, flags);
+ if (omap->count > 0)
+ goto end_count;
+
+ clk_enable(omap->usbhost_ick);
+ clk_enable(omap->usbhost_hs_fck);
+ clk_enable(omap->usbhost_fs_fck);
+ clk_enable(omap->usbtll_fck);
+ clk_enable(omap->usbtll_ick);
+
+ if (pdata->ehci_data->phy_reset) {
+ if (gpio_is_valid(pdata->ehci_data->reset_gpio_port[0])) {
+ gpio_request(pdata->ehci_data->reset_gpio_port[0],
+ "USB1 PHY reset");
+ gpio_direction_output
+ (pdata->ehci_data->reset_gpio_port[0], 1);
+ }
+
+ if (gpio_is_valid(pdata->ehci_data->reset_gpio_port[1])) {
+ gpio_request(pdata->ehci_data->reset_gpio_port[1],
+ "USB2 PHY reset");
+ gpio_direction_output
+ (pdata->ehci_data->reset_gpio_port[1], 1);
+ }
+
+ /* Hold the PHY in RESET for enough time till DIR is high */
+ udelay(10);
+ }
+
+ omap->usbhs_rev = usbhs_read(omap->uhh_base, OMAP_UHH_REVISION);
+ dev_dbg(dev, "OMAP UHH_REVISION 0x%x\n", omap->usbhs_rev);
+
+ /* perform TLL soft reset, and wait until reset is complete */
+ usbhs_write(omap->tll_base, OMAP_USBTLL_SYSCONFIG,
+ OMAP_USBTLL_SYSCONFIG_SOFTRESET);
+
+ /* Wait for TLL reset to complete */
+ timeout = jiffies + msecs_to_jiffies(1000);
+ while (!(usbhs_read(omap->tll_base, OMAP_USBTLL_SYSSTATUS)
+ & OMAP_USBTLL_SYSSTATUS_RESETDONE)) {
+ cpu_relax();
+
+ if (time_after(jiffies, timeout)) {
+ dev_dbg(dev, "operation timed out\n");
+ ret = -EINVAL;
+ goto err_tll;
+ }
+ }
+
+ dev_dbg(dev, "TLL RESET DONE\n");
+
+ /* (1<<3) = no idle mode only for initial debugging */
+ usbhs_write(omap->tll_base, OMAP_USBTLL_SYSCONFIG,
+ OMAP_USBTLL_SYSCONFIG_ENAWAKEUP |
+ OMAP_USBTLL_SYSCONFIG_SIDLEMODE |
+ OMAP_USBTLL_SYSCONFIG_AUTOIDLE);
+
+ /* Put UHH in NoIdle/NoStandby mode */
+ reg = usbhs_read(omap->uhh_base, OMAP_UHH_SYSCONFIG);
+ if (is_omap_usbhs_rev1(omap)) {
+ reg |= (OMAP_UHH_SYSCONFIG_ENAWAKEUP
+ | OMAP_UHH_SYSCONFIG_SIDLEMODE
+ | OMAP_UHH_SYSCONFIG_CACTIVITY
+ | OMAP_UHH_SYSCONFIG_MIDLEMODE);
+ reg &= ~OMAP_UHH_SYSCONFIG_AUTOIDLE;
+
+
+ } else if (is_omap_usbhs_rev2(omap)) {
+ reg &= ~OMAP4_UHH_SYSCONFIG_IDLEMODE_CLEAR;
+ reg |= OMAP4_UHH_SYSCONFIG_NOIDLE;
+ reg &= ~OMAP4_UHH_SYSCONFIG_STDBYMODE_CLEAR;
+ reg |= OMAP4_UHH_SYSCONFIG_NOSTDBY;
+ }
+
+ usbhs_write(omap->uhh_base, OMAP_UHH_SYSCONFIG, reg);
+
+ reg = usbhs_read(omap->uhh_base, OMAP_UHH_HOSTCONFIG);
+ /* setup ULPI bypass and burst configurations */
+ reg |= (OMAP_UHH_HOSTCONFIG_INCR4_BURST_EN
+ | OMAP_UHH_HOSTCONFIG_INCR8_BURST_EN
+ | OMAP_UHH_HOSTCONFIG_INCR16_BURST_EN);
+ reg |= OMAP4_UHH_HOSTCONFIG_APP_START_CLK;
+ reg &= ~OMAP_UHH_HOSTCONFIG_INCRX_ALIGN_EN;
+
+ if (is_omap_usbhs_rev1(omap)) {
+ if (pdata->port_mode[0] == OMAP_USBHS_PORT_MODE_UNUSED)
+ reg &= ~OMAP_UHH_HOSTCONFIG_P1_CONNECT_STATUS;
+ if (pdata->port_mode[1] == OMAP_USBHS_PORT_MODE_UNUSED)
+ reg &= ~OMAP_UHH_HOSTCONFIG_P2_CONNECT_STATUS;
+ if (pdata->port_mode[2] == OMAP_USBHS_PORT_MODE_UNUSED)
+ reg &= ~OMAP_UHH_HOSTCONFIG_P3_CONNECT_STATUS;
+
+ /* Bypass the TLL module for PHY mode operation */
+ if (cpu_is_omap3430() && (omap_rev() <= OMAP3430_REV_ES2_1)) {
+ dev_dbg(dev, "OMAP3 ES version <= ES2.1\n");
+ if (is_ehci_phy_mode(pdata->port_mode[0]) ||
+ is_ehci_phy_mode(pdata->port_mode[1]) ||
+ is_ehci_phy_mode(pdata->port_mode[2]))
+ reg &= ~OMAP_UHH_HOSTCONFIG_ULPI_BYPASS;
+ else
+ reg |= OMAP_UHH_HOSTCONFIG_ULPI_BYPASS;
+ } else {
+ dev_dbg(dev, "OMAP3 ES version > ES2.1\n");
+ if (is_ehci_phy_mode(pdata->port_mode[0]))
+ reg &= ~OMAP_UHH_HOSTCONFIG_ULPI_P1_BYPASS;
+ else
+ reg |= OMAP_UHH_HOSTCONFIG_ULPI_P1_BYPASS;
+ if (is_ehci_phy_mode(pdata->port_mode[1]))
+ reg &= ~OMAP_UHH_HOSTCONFIG_ULPI_P2_BYPASS;
+ else
+ reg |= OMAP_UHH_HOSTCONFIG_ULPI_P2_BYPASS;
+ if (is_ehci_phy_mode(pdata->port_mode[2]))
+ reg &= ~OMAP_UHH_HOSTCONFIG_ULPI_P3_BYPASS;
+ else
+ reg |= OMAP_UHH_HOSTCONFIG_ULPI_P3_BYPASS;
+ }
+ } else if (is_omap_usbhs_rev2(omap)) {
+ /* Clear port mode fields for PHY mode*/
+ reg &= ~OMAP4_P1_MODE_CLEAR;
+ reg &= ~OMAP4_P2_MODE_CLEAR;
+
+ if (is_ehci_phy_mode(pdata->port_mode[0])) {
+ ret = clk_set_parent(omap->utmi_p1_fck,
+ omap->xclk60mhsp1_ck);
+ if (ret != 0) {
+ dev_err(dev, "xclk60mhsp1_ck set parent"
+ "failed error:%d\n", ret);
+ goto err_tll;
+ }
+ } else if (is_ehci_tll_mode(pdata->port_mode[0])) {
+ ret = clk_set_parent(omap->utmi_p1_fck,
+ omap->init_60m_fclk);
+ if (ret != 0) {
+ dev_err(dev, "init_60m_fclk set parent"
+ "failed error:%d\n", ret);
+ goto err_tll;
+ }
+ clk_enable(omap->usbhost_p1_fck);
+ clk_enable(omap->usbtll_p1_fck);
+ }
+
+ if (is_ehci_phy_mode(pdata->port_mode[1])) {
+ ret = clk_set_parent(omap->utmi_p2_fck,
+ omap->xclk60mhsp2_ck);
+ if (ret != 0) {
+ dev_err(dev, "xclk60mhsp1_ck set parent"
+ "failed error:%d\n", ret);
+ goto err_tll;
+ }
+ } else if (is_ehci_tll_mode(pdata->port_mode[1])) {
+ ret = clk_set_parent(omap->utmi_p2_fck,
+ omap->init_60m_fclk);
+ if (ret != 0) {
+ dev_err(dev, "init_60m_fclk set parent"
+ "failed error:%d\n", ret);
+ goto err_tll;
+ }
+ clk_enable(omap->usbhost_p2_fck);
+ clk_enable(omap->usbtll_p2_fck);
+ }
+
+ clk_enable(omap->utmi_p1_fck);
+ clk_enable(omap->utmi_p2_fck);
+
+ if (is_ehci_tll_mode(pdata->port_mode[0]) ||
+ (is_ohci_port(pdata->port_mode[0])))
+ reg |= OMAP4_P1_MODE_TLL;
+ else if (is_ehci_hsic_mode(pdata->port_mode[0]))
+ reg |= OMAP4_P1_MODE_HSIC;
+
+ if (is_ehci_tll_mode(pdata->port_mode[1]) ||
+ (is_ohci_port(pdata->port_mode[1])))
+ reg |= OMAP4_P2_MODE_TLL;
+ else if (is_ehci_hsic_mode(pdata->port_mode[1]))
+ reg |= OMAP4_P2_MODE_HSIC;
+ }
+
+ usbhs_write(omap->uhh_base, OMAP_UHH_HOSTCONFIG, reg);
+ dev_dbg(dev, "UHH setup done, uhh_hostconfig=%x\n", reg);
+
+ if (is_ehci_tll_mode(pdata->port_mode[0]) ||
+ is_ehci_tll_mode(pdata->port_mode[1]) ||
+ is_ehci_tll_mode(pdata->port_mode[2]) ||
+ (is_ohci_port(pdata->port_mode[0])) ||
+ (is_ohci_port(pdata->port_mode[1])) ||
+ (is_ohci_port(pdata->port_mode[2]))) {
+
+ /* Enable UTMI mode for required TLL channels */
+ if (is_omap_usbhs_rev2(omap))
+ usbhs_omap_tll_init(dev, OMAP_REV2_TLL_CHANNEL_COUNT);
+ else
+ usbhs_omap_tll_init(dev, OMAP_TLL_CHANNEL_COUNT);
+ }
+
+ if (pdata->ehci_data->phy_reset) {
+ /* Hold the PHY in RESET for enough time till
+ * PHY is settled and ready
+ */
+ udelay(10);
+
+ if (gpio_is_valid(pdata->ehci_data->reset_gpio_port[0]))
+ gpio_set_value
+ (pdata->ehci_data->reset_gpio_port[0], 0);
+
+ if (gpio_is_valid(pdata->ehci_data->reset_gpio_port[1]))
+ gpio_set_value
+ (pdata->ehci_data->reset_gpio_port[1], 0);
+ }
+
+end_count:
+ omap->count++;
+ goto end_enable;
+
+err_tll:
+ if (pdata->ehci_data->phy_reset) {
+ if (gpio_is_valid(pdata->ehci_data->reset_gpio_port[0]))
+ gpio_free(pdata->ehci_data->reset_gpio_port[0]);
+
+ if (gpio_is_valid(pdata->ehci_data->reset_gpio_port[1]))
+ gpio_free(pdata->ehci_data->reset_gpio_port[1]);
+ }
+
+ clk_disable(omap->usbtll_ick);
+ clk_disable(omap->usbtll_fck);
+ clk_disable(omap->usbhost_fs_fck);
+ clk_disable(omap->usbhost_hs_fck);
+ clk_disable(omap->usbhost_ick);
+
+end_enable:
+ spin_unlock_irqrestore(&omap->lock, flags);
+ return ret;
+}
+
+static void usbhs_disable(struct device *dev)
+{
+ struct usbhs_hcd_omap *omap = dev_get_drvdata(dev);
+ struct usbhs_omap_platform_data *pdata = &omap->platdata;
+ unsigned long flags = 0;
+ unsigned long timeout;
+
+ dev_dbg(dev, "stopping TI HSUSB Controller\n");
+
+ spin_lock_irqsave(&omap->lock, flags);
+
+ if (omap->count == 0)
+ goto end_disble;
+
+ omap->count--;
+
+ if (omap->count != 0)
+ goto end_disble;
+
+ /* Reset OMAP modules for insmod/rmmod to work */
+ usbhs_write(omap->uhh_base, OMAP_UHH_SYSCONFIG,
+ is_omap_usbhs_rev2(omap) ?
+ OMAP4_UHH_SYSCONFIG_SOFTRESET :
+ OMAP_UHH_SYSCONFIG_SOFTRESET);
+
+ timeout = jiffies + msecs_to_jiffies(100);
+ while (!(usbhs_read(omap->uhh_base, OMAP_UHH_SYSSTATUS)
+ & (1 << 0))) {
+ cpu_relax();
+
+ if (time_after(jiffies, timeout))
+ dev_dbg(dev, "operation timed out\n");
+ }
+
+ while (!(usbhs_read(omap->uhh_base, OMAP_UHH_SYSSTATUS)
+ & (1 << 1))) {
+ cpu_relax();
+
+ if (time_after(jiffies, timeout))
+ dev_dbg(dev, "operation timed out\n");
+ }
+
+ while (!(usbhs_read(omap->uhh_base, OMAP_UHH_SYSSTATUS)
+ & (1 << 2))) {
+ cpu_relax();
+
+ if (time_after(jiffies, timeout))
+ dev_dbg(dev, "operation timed out\n");
+ }
+
+ usbhs_write(omap->tll_base, OMAP_USBTLL_SYSCONFIG, (1 << 1));
+
+ while (!(usbhs_read(omap->tll_base, OMAP_USBTLL_SYSSTATUS)
+ & (1 << 0))) {
+ cpu_relax();
+
+ if (time_after(jiffies, timeout))
+ dev_dbg(dev, "operation timed out\n");
+ }
+
+ if (pdata->ehci_data->phy_reset) {
+ if (gpio_is_valid(pdata->ehci_data->reset_gpio_port[0]))
+ gpio_free(pdata->ehci_data->reset_gpio_port[0]);
+
+ if (gpio_is_valid(pdata->ehci_data->reset_gpio_port[1]))
+ gpio_free(pdata->ehci_data->reset_gpio_port[1]);
+ }
+
+ clk_disable(omap->utmi_p2_fck);
+ clk_disable(omap->utmi_p1_fck);
+ clk_disable(omap->usbtll_ick);
+ clk_disable(omap->usbtll_fck);
+ clk_disable(omap->usbhost_fs_fck);
+ clk_disable(omap->usbhost_hs_fck);
+ clk_disable(omap->usbhost_ick);
+
+end_disble:
+ spin_unlock_irqrestore(&omap->lock, flags);
+}
+
+int omap_usbhs_enable(struct device *dev)
+{
+ return usbhs_enable(dev->parent);
+}
+EXPORT_SYMBOL_GPL(omap_usbhs_enable);
+
+void omap_usbhs_disable(struct device *dev)
+{
+ usbhs_disable(dev->parent);
+}
+EXPORT_SYMBOL_GPL(omap_usbhs_disable);
+
+static struct platform_driver usbhs_omap_driver = {
+ .driver = {
+ .name = (char *)usbhs_driver_name,
+ .owner = THIS_MODULE,
+ },
+ .remove = __exit_p(usbhs_omap_remove),
+};
+
+MODULE_AUTHOR("Keshava Munegowda <keshava_mgowda@ti.com>");
+MODULE_ALIAS("platform:" USBHS_DRIVER_NAME);
+MODULE_LICENSE("GPL v2");
+MODULE_DESCRIPTION("usb host common core driver for omap EHCI and OHCI");
+
+static int __init omap_usbhs_drvinit(void)
+{
+ return platform_driver_probe(&usbhs_omap_driver, usbhs_omap_probe);
+}
+
+/*
+ * init before ehci and ohci drivers;
+ * The usbhs core driver should be initialized much before
+ * the omap ehci and ohci probe functions are called.
+ */
+fs_initcall(omap_usbhs_drvinit);
+
+static void __exit omap_usbhs_drvexit(void)
+{
+ platform_driver_unregister(&usbhs_omap_driver);
+}
+module_exit(omap_usbhs_drvexit);
projects / linux.git / commitdiff