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-rw-r--r--drivers/usb/host/ohci-omap3.c735
1 files changed, 735 insertions, 0 deletions
diff --git a/drivers/usb/host/ohci-omap3.c b/drivers/usb/host/ohci-omap3.c
new file mode 100644
index 0000000..2cc8a50
--- /dev/null
+++ b/drivers/usb/host/ohci-omap3.c
@@ -0,0 +1,735 @@
+/*
+ * ohci-omap3.c - driver for OHCI on OMAP3 and later processors
+ *
+ * Bus Glue for OMAP3 USBHOST 3 port OHCI controller
+ * This controller is also used in later OMAPs and AM35x chips
+ *
+ * Copyright (C) 2007-2010 Texas Instruments, Inc.
+ * Author: Vikram Pandita <vikram.pandita@ti.com>
+ * Author: Anand Gadiyar <gadiyar@ti.com>
+ *
+ * Based on ehci-omap.c and some other ohci glue layers
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * 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, write to the Free Software
+ * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
+ *
+ * TODO (last updated Mar 10th, 2010):
+ * - add kernel-doc
+ * - Factor out code common to EHCI to a separate file
+ * - Make EHCI and OHCI coexist together
+ * - needs newer silicon versions to actually work
+ * - the last one to be loaded currently steps on the other's toes
+ * - Add hooks for configuring transceivers, etc. at init/exit
+ * - Add aggressive clock-management code
+ */
+
+#include <linux/platform_device.h>
+#include <linux/clk.h>
+
+#include <plat/usb.h>
+
+/*
+ * OMAP USBHOST Register addresses: VIRTUAL ADDRESSES
+ * Use ohci_omap_readl()/ohci_omap_writel() functions
+ */
+
+/* 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_CHANNEL_COUNT 3
+
+/* 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_SYSSTATUS_UHHRESETDONE (1 << 0)
+#define OMAP_UHH_SYSSTATUS_OHCIRESETDONE (1 << 1)
+#define OMAP_UHH_SYSSTATUS_EHCIRESETDONE (1 << 2)
+#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 OMAP_UHH_DEBUG_CSR (0x44)
+
+/*-------------------------------------------------------------------------*/
+
+static inline void ohci_omap_writel(void __iomem *base, u32 reg, u32 val)
+{
+ __raw_writel(val, base + reg);
+}
+
+static inline u32 ohci_omap_readl(void __iomem *base, u32 reg)
+{
+ return __raw_readl(base + reg);
+}
+
+static inline void ohci_omap_writeb(void __iomem *base, u8 reg, u8 val)
+{
+ __raw_writeb(val, base + reg);
+}
+
+static inline u8 ohci_omap_readb(void __iomem *base, u8 reg)
+{
+ return __raw_readb(base + reg);
+}
+
+/*-------------------------------------------------------------------------*/
+
+struct ohci_hcd_omap3 {
+ struct ohci_hcd *ohci;
+ struct device *dev;
+
+ struct clk *usbhost_ick;
+ struct clk *usbhost2_120m_fck;
+ struct clk *usbhost1_48m_fck;
+ struct clk *usbtll_fck;
+ struct clk *usbtll_ick;
+
+ /* port_mode: TLL/PHY, 2/3/4/6-PIN, DP-DM/DAT-SE0 */
+ enum ohci_omap3_port_mode port_mode[OMAP3_HS_USB_PORTS];
+ void __iomem *uhh_base;
+ void __iomem *tll_base;
+ void __iomem *ohci_base;
+
+ unsigned es2_compatibility:1;
+};
+
+/*-------------------------------------------------------------------------*/
+
+static void ohci_omap3_clock_power(struct ohci_hcd_omap3 *omap, int on)
+{
+ if (on) {
+ clk_enable(omap->usbtll_ick);
+ clk_enable(omap->usbtll_fck);
+ clk_enable(omap->usbhost_ick);
+ clk_enable(omap->usbhost1_48m_fck);
+ clk_enable(omap->usbhost2_120m_fck);
+ } else {
+ clk_disable(omap->usbhost2_120m_fck);
+ clk_disable(omap->usbhost1_48m_fck);
+ clk_disable(omap->usbhost_ick);
+ clk_disable(omap->usbtll_fck);
+ clk_disable(omap->usbtll_ick);
+ }
+}
+
+static int ohci_omap3_init(struct usb_hcd *hcd)
+{
+ dev_dbg(hcd->self.controller, "starting OHCI controller\n");
+
+ return ohci_init(hcd_to_ohci(hcd));
+}
+
+
+/*-------------------------------------------------------------------------*/
+
+static int ohci_omap3_start(struct usb_hcd *hcd)
+{
+ struct ohci_hcd *ohci = hcd_to_ohci(hcd);
+ int ret;
+
+ /*
+ * RemoteWakeupConnected has to be set explicitly before
+ * calling ohci_run. The reset value of RWC is 0.
+ */
+ ohci->hc_control = OHCI_CTRL_RWC;
+ writel(OHCI_CTRL_RWC, &ohci->regs->control);
+
+ ret = ohci_run(ohci);
+
+ if (ret < 0) {
+ dev_err(hcd->self.controller, "can't start\n");
+ ohci_stop(hcd);
+ }
+
+ return ret;
+}
+
+/*-------------------------------------------------------------------------*/
+
+/*
+ * 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 ohci_omap3_port_mode mode)
+{
+ switch (mode) {
+ case OMAP_OHCI_PORT_MODE_UNUSED:
+ case OMAP_OHCI_PORT_MODE_PHY_6PIN_DATSE0:
+ return 0x0;
+
+ case OMAP_OHCI_PORT_MODE_PHY_6PIN_DPDM:
+ return 0x1;
+
+ case OMAP_OHCI_PORT_MODE_PHY_3PIN_DATSE0:
+ return 0x2;
+
+ case OMAP_OHCI_PORT_MODE_PHY_4PIN_DPDM:
+ return 0x3;
+
+ case OMAP_OHCI_PORT_MODE_TLL_6PIN_DATSE0:
+ return 0x4;
+
+ case OMAP_OHCI_PORT_MODE_TLL_6PIN_DPDM:
+ return 0x5;
+
+ case OMAP_OHCI_PORT_MODE_TLL_3PIN_DATSE0:
+ return 0x6;
+
+ case OMAP_OHCI_PORT_MODE_TLL_4PIN_DPDM:
+ return 0x7;
+
+ case OMAP_OHCI_PORT_MODE_TLL_2PIN_DATSE0:
+ return 0xA;
+
+ case OMAP_OHCI_PORT_MODE_TLL_2PIN_DPDM:
+ return 0xB;
+ default:
+ pr_warning("Invalid port mode, using default\n");
+ return 0x0;
+ }
+}
+
+static void ohci_omap3_tll_config(struct ohci_hcd_omap3 *omap)
+{
+ u32 reg;
+ int i;
+
+ /* Program TLL SHARED CONF */
+ reg = ohci_omap_readl(omap->tll_base, OMAP_TLL_SHARED_CONF);
+ reg &= ~OMAP_TLL_SHARED_CONF_USB_90D_DDR_EN;
+ reg &= ~OMAP_TLL_SHARED_CONF_USB_180D_SDR_EN;
+ reg |= OMAP_TLL_SHARED_CONF_USB_DIVRATION;
+ reg |= OMAP_TLL_SHARED_CONF_FCLK_IS_ON;
+ ohci_omap_writel(omap->tll_base, OMAP_TLL_SHARED_CONF, reg);
+
+ /* Program each TLL channel */
+ /*
+ * REVISIT: Only the 3-pin and 4-pin PHY modes have
+ * actually been tested.
+ */
+ for (i = 0; i < OMAP_TLL_CHANNEL_COUNT; i++) {
+
+ /* Enable only those channels that are actually used */
+ if (omap->port_mode[i] == OMAP_OHCI_PORT_MODE_UNUSED)
+ continue;
+
+ reg = ohci_omap_readl(omap->tll_base, OMAP_TLL_CHANNEL_CONF(i));
+ reg |= ohci_omap3_fslsmode(omap->port_mode[i])
+ << OMAP_TLL_CHANNEL_CONF_FSLSMODE_SHIFT;
+ reg |= OMAP_TLL_CHANNEL_CONF_CHANMODE_FSLS;
+ reg |= OMAP_TLL_CHANNEL_CONF_CHANEN;
+ ohci_omap_writel(omap->tll_base, OMAP_TLL_CHANNEL_CONF(i), reg);
+ }
+}
+
+/* omap3_start_ohci
+ * - Start the TI USBHOST controller
+ */
+static int omap3_start_ohci(struct ohci_hcd_omap3 *omap, struct usb_hcd *hcd)
+{
+ unsigned long timeout = jiffies + msecs_to_jiffies(1000);
+ u32 reg = 0;
+ int ret = 0;
+
+ dev_dbg(omap->dev, "starting TI OHCI USB Controller\n");
+
+ /* Get all the clock handles we need */
+ omap->usbhost_ick = clk_get(omap->dev, "usbhost_ick");
+ if (IS_ERR(omap->usbhost_ick)) {
+ dev_err(omap->dev, "could not get usbhost_ick\n");
+ ret = PTR_ERR(omap->usbhost_ick);
+ goto err_host_ick;
+ }
+
+ omap->usbhost2_120m_fck = clk_get(omap->dev, "usbhost_120m_fck");
+ if (IS_ERR(omap->usbhost2_120m_fck)) {
+ dev_err(omap->dev, "could not get usbhost_120m_fck\n");
+ ret = PTR_ERR(omap->usbhost2_120m_fck);
+ goto err_host_120m_fck;
+ }
+
+ omap->usbhost1_48m_fck = clk_get(omap->dev, "usbhost_48m_fck");
+ if (IS_ERR(omap->usbhost1_48m_fck)) {
+ dev_err(omap->dev, "could not get usbhost_48m_fck\n");
+ ret = PTR_ERR(omap->usbhost1_48m_fck);
+ goto err_host_48m_fck;
+ }
+
+ omap->usbtll_fck = clk_get(omap->dev, "usbtll_fck");
+ if (IS_ERR(omap->usbtll_fck)) {
+ dev_err(omap->dev, "could not get usbtll_fck\n");
+ ret = PTR_ERR(omap->usbtll_fck);
+ goto err_tll_fck;
+ }
+
+ omap->usbtll_ick = clk_get(omap->dev, "usbtll_ick");
+ if (IS_ERR(omap->usbtll_ick)) {
+ dev_err(omap->dev, "could not get usbtll_ick\n");
+ ret = PTR_ERR(omap->usbtll_ick);
+ goto err_tll_ick;
+ }
+
+ /* Now enable all the clocks in the correct order */
+ ohci_omap3_clock_power(omap, 1);
+
+ /* perform TLL soft reset, and wait until reset is complete */
+ ohci_omap_writel(omap->tll_base, OMAP_USBTLL_SYSCONFIG,
+ OMAP_USBTLL_SYSCONFIG_SOFTRESET);
+
+ /* Wait for TLL reset to complete */
+ while (!(ohci_omap_readl(omap->tll_base, OMAP_USBTLL_SYSSTATUS)
+ & OMAP_USBTLL_SYSSTATUS_RESETDONE)) {
+ cpu_relax();
+
+ if (time_after(jiffies, timeout)) {
+ dev_dbg(omap->dev, "operation timed out\n");
+ ret = -EINVAL;
+ goto err_sys_status;
+ }
+ }
+
+ dev_dbg(omap->dev, "TLL reset done\n");
+
+ /* (1<<3) = no idle mode only for initial debugging */
+ ohci_omap_writel(omap->tll_base, OMAP_USBTLL_SYSCONFIG,
+ OMAP_USBTLL_SYSCONFIG_ENAWAKEUP |
+ OMAP_USBTLL_SYSCONFIG_SIDLEMODE |
+ OMAP_USBTLL_SYSCONFIG_CACTIVITY);
+
+
+ /* Put UHH in NoIdle/NoStandby mode */
+ reg = ohci_omap_readl(omap->uhh_base, OMAP_UHH_SYSCONFIG);
+ reg |= (OMAP_UHH_SYSCONFIG_ENAWAKEUP
+ | OMAP_UHH_SYSCONFIG_SIDLEMODE
+ | OMAP_UHH_SYSCONFIG_CACTIVITY
+ | OMAP_UHH_SYSCONFIG_MIDLEMODE);
+ reg &= ~OMAP_UHH_SYSCONFIG_AUTOIDLE;
+ reg &= ~OMAP_UHH_SYSCONFIG_SOFTRESET;
+
+ ohci_omap_writel(omap->uhh_base, OMAP_UHH_SYSCONFIG, reg);
+
+ reg = ohci_omap_readl(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 &= ~OMAP_UHH_HOSTCONFIG_INCRX_ALIGN_EN;
+
+ /*
+ * REVISIT: Pi_CONNECT_STATUS controls MStandby
+ * assertion and Swakeup generation - let us not
+ * worry about this for now. OMAP HWMOD framework
+ * might take care of this later. If not, we can
+ * update these registers when adding aggressive
+ * clock management code.
+ *
+ * For now, turn off all the Pi_CONNECT_STATUS bits
+ *
+ if (omap->port_mode[0] == OMAP_OHCI_PORT_MODE_UNUSED)
+ reg &= ~OMAP_UHH_HOSTCONFIG_P1_CONNECT_STATUS;
+ if (omap->port_mode[1] == OMAP_OHCI_PORT_MODE_UNUSED)
+ reg &= ~OMAP_UHH_HOSTCONFIG_P2_CONNECT_STATUS;
+ if (omap->port_mode[2] == OMAP_OHCI_PORT_MODE_UNUSED)
+ reg &= ~OMAP_UHH_HOSTCONFIG_P3_CONNECT_STATUS;
+ */
+ reg &= ~OMAP_UHH_HOSTCONFIG_P1_CONNECT_STATUS;
+ reg &= ~OMAP_UHH_HOSTCONFIG_P2_CONNECT_STATUS;
+ reg &= ~OMAP_UHH_HOSTCONFIG_P3_CONNECT_STATUS;
+
+ if (omap->es2_compatibility) {
+ /*
+ * All OHCI modes need to go through the TLL,
+ * unlike in the EHCI case. So use UTMI mode
+ * for all ports for OHCI, on ES2.x silicon
+ */
+ dev_dbg(omap->dev, "OMAP3 ES version <= ES2.1\n");
+ reg |= OMAP_UHH_HOSTCONFIG_ULPI_BYPASS;
+ } else {
+ dev_dbg(omap->dev, "OMAP3 ES version > ES2.1\n");
+ if (omap->port_mode[0] == OMAP_OHCI_PORT_MODE_UNUSED)
+ reg &= ~OMAP_UHH_HOSTCONFIG_ULPI_P1_BYPASS;
+ else
+ reg |= OMAP_UHH_HOSTCONFIG_ULPI_P1_BYPASS;
+
+ if (omap->port_mode[1] == OMAP_OHCI_PORT_MODE_UNUSED)
+ reg &= ~OMAP_UHH_HOSTCONFIG_ULPI_P2_BYPASS;
+ else
+ reg |= OMAP_UHH_HOSTCONFIG_ULPI_P2_BYPASS;
+
+ if (omap->port_mode[2] == OMAP_OHCI_PORT_MODE_UNUSED)
+ reg &= ~OMAP_UHH_HOSTCONFIG_ULPI_P3_BYPASS;
+ else
+ reg |= OMAP_UHH_HOSTCONFIG_ULPI_P3_BYPASS;
+
+ }
+ ohci_omap_writel(omap->uhh_base, OMAP_UHH_HOSTCONFIG, reg);
+ dev_dbg(omap->dev, "UHH setup done, uhh_hostconfig=%x\n", reg);
+
+ ohci_omap3_tll_config(omap);
+
+ return 0;
+
+err_sys_status:
+ ohci_omap3_clock_power(omap, 0);
+ clk_put(omap->usbtll_ick);
+
+err_tll_ick:
+ clk_put(omap->usbtll_fck);
+
+err_tll_fck:
+ clk_put(omap->usbhost1_48m_fck);
+
+err_host_48m_fck:
+ clk_put(omap->usbhost2_120m_fck);
+
+err_host_120m_fck:
+ clk_put(omap->usbhost_ick);
+
+err_host_ick:
+ return ret;
+}
+
+static void omap3_stop_ohci(struct ohci_hcd_omap3 *omap, struct usb_hcd *hcd)
+{
+ unsigned long timeout = jiffies + msecs_to_jiffies(100);
+
+ dev_dbg(omap->dev, "stopping TI EHCI USB Controller\n");
+
+ /* Reset USBHOST for insmod/rmmod to work */
+ ohci_omap_writel(omap->uhh_base, OMAP_UHH_SYSCONFIG,
+ OMAP_UHH_SYSCONFIG_SOFTRESET);
+ while (!(ohci_omap_readl(omap->uhh_base, OMAP_UHH_SYSSTATUS)
+ & OMAP_UHH_SYSSTATUS_UHHRESETDONE)) {
+ cpu_relax();
+
+ if (time_after(jiffies, timeout))
+ dev_dbg(omap->dev, "operation timed out\n");
+ }
+
+ while (!(ohci_omap_readl(omap->uhh_base, OMAP_UHH_SYSSTATUS)
+ & OMAP_UHH_SYSSTATUS_OHCIRESETDONE)) {
+ cpu_relax();
+
+ if (time_after(jiffies, timeout))
+ dev_dbg(omap->dev, "operation timed out\n");
+ }
+
+ while (!(ohci_omap_readl(omap->uhh_base, OMAP_UHH_SYSSTATUS)
+ & OMAP_UHH_SYSSTATUS_EHCIRESETDONE)) {
+ cpu_relax();
+
+ if (time_after(jiffies, timeout))
+ dev_dbg(omap->dev, "operation timed out\n");
+ }
+
+ ohci_omap_writel(omap->tll_base, OMAP_USBTLL_SYSCONFIG, (1 << 1));
+
+ while (!(ohci_omap_readl(omap->tll_base, OMAP_USBTLL_SYSSTATUS)
+ & (1 << 0))) {
+ cpu_relax();
+
+ if (time_after(jiffies, timeout))
+ dev_dbg(omap->dev, "operation timed out\n");
+ }
+
+ ohci_omap3_clock_power(omap, 0);
+
+ if (omap->usbtll_fck != NULL) {
+ clk_put(omap->usbtll_fck);
+ omap->usbtll_fck = NULL;
+ }
+
+ if (omap->usbhost_ick != NULL) {
+ clk_put(omap->usbhost_ick);
+ omap->usbhost_ick = NULL;
+ }
+
+ if (omap->usbhost1_48m_fck != NULL) {
+ clk_put(omap->usbhost1_48m_fck);
+ omap->usbhost1_48m_fck = NULL;
+ }
+
+ if (omap->usbhost2_120m_fck != NULL) {
+ clk_put(omap->usbhost2_120m_fck);
+ omap->usbhost2_120m_fck = NULL;
+ }
+
+ if (omap->usbtll_ick != NULL) {
+ clk_put(omap->usbtll_ick);
+ omap->usbtll_ick = NULL;
+ }
+
+ dev_dbg(omap->dev, "Clock to USB host has been disabled\n");
+}
+
+/*-------------------------------------------------------------------------*/
+
+static const struct hc_driver ohci_omap3_hc_driver = {
+ .description = hcd_name,
+ .product_desc = "OMAP3 OHCI Host Controller",
+ .hcd_priv_size = sizeof(struct ohci_hcd),
+
+ /*
+ * generic hardware linkage
+ */
+ .irq = ohci_irq,
+ .flags = HCD_USB11 | HCD_MEMORY,
+
+ /*
+ * basic lifecycle operations
+ */
+ .reset = ohci_omap3_init,
+ .start = ohci_omap3_start,
+ .stop = ohci_stop,
+ .shutdown = ohci_shutdown,
+
+ /*
+ * managing i/o requests and associated device resources
+ */
+ .urb_enqueue = ohci_urb_enqueue,
+ .urb_dequeue = ohci_urb_dequeue,
+ .endpoint_disable = ohci_endpoint_disable,
+
+ /*
+ * scheduling support
+ */
+ .get_frame_number = ohci_get_frame,
+
+ /*
+ * root hub support
+ */
+ .hub_status_data = ohci_hub_status_data,
+ .hub_control = ohci_hub_control,
+#ifdef CONFIG_PM
+ .bus_suspend = ohci_bus_suspend,
+ .bus_resume = ohci_bus_resume,
+#endif
+ .start_port_reset = ohci_start_port_reset,
+};
+
+/*-------------------------------------------------------------------------*/
+
+/*
+ * configure so an HC device and id are always provided
+ * always called with process context; sleeping is OK
+ */
+
+/**
+ * ohci_hcd_omap3_probe - initialize OMAP-based HCDs
+ *
+ * Allocates basic resources for this USB host controller, and
+ * then invokes the start() method for the HCD associated with it
+ * through the hotplug entry's driver_data.
+ */
+static int __devinit ohci_hcd_omap3_probe(struct platform_device *pdev)
+{
+ struct ohci_hcd_omap_platform_data *pdata = pdev->dev.platform_data;
+ struct ohci_hcd_omap3 *omap;
+ struct resource *res;
+ struct usb_hcd *hcd;
+ int ret = -ENODEV;
+ int irq;
+
+ if (usb_disabled())
+ goto err_disabled;
+
+ if (!pdata) {
+ dev_dbg(&pdev->dev, "missing platform_data\n");
+ goto err_pdata;
+ }
+
+ irq = platform_get_irq(pdev, 0);
+
+ omap = kzalloc(sizeof(*omap), GFP_KERNEL);
+ if (!omap) {
+ ret = -ENOMEM;
+ goto err_disabled;
+ }
+
+ hcd = usb_create_hcd(&ohci_omap3_hc_driver, &pdev->dev,
+ dev_name(&pdev->dev));
+ if (!hcd) {
+ ret = -ENOMEM;
+ goto err_create_hcd;
+ }
+
+ platform_set_drvdata(pdev, omap);
+ omap->dev = &pdev->dev;
+ omap->port_mode[0] = pdata->port_mode[0];
+ omap->port_mode[1] = pdata->port_mode[1];
+ omap->port_mode[2] = pdata->port_mode[2];
+ omap->es2_compatibility = pdata->es2_compatibility;
+ omap->ohci = hcd_to_ohci(hcd);
+
+ res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
+
+ hcd->rsrc_start = res->start;
+ hcd->rsrc_len = resource_size(res);
+
+ hcd->regs = ioremap(hcd->rsrc_start, hcd->rsrc_len);
+ if (!hcd->regs) {
+ dev_err(&pdev->dev, "OHCI ioremap failed\n");
+ ret = -ENOMEM;
+ goto err_ioremap;
+ }
+
+ res = platform_get_resource(pdev, IORESOURCE_MEM, 1);
+ omap->uhh_base = ioremap(res->start, resource_size(res));
+ if (!omap->uhh_base) {
+ dev_err(&pdev->dev, "UHH ioremap failed\n");
+ ret = -ENOMEM;
+ goto err_uhh_ioremap;
+ }
+
+ res = platform_get_resource(pdev, IORESOURCE_MEM, 2);
+ omap->tll_base = ioremap(res->start, resource_size(res));
+ if (!omap->tll_base) {
+ dev_err(&pdev->dev, "TLL ioremap failed\n");
+ ret = -ENOMEM;
+ goto err_tll_ioremap;
+ }
+
+ ret = omap3_start_ohci(omap, hcd);
+ if (ret) {
+ dev_dbg(&pdev->dev, "failed to start ehci\n");
+ goto err_start;
+ }
+
+ ohci_hcd_init(omap->ohci);
+
+ ret = usb_add_hcd(hcd, irq, IRQF_DISABLED);
+ if (ret) {
+ dev_dbg(&pdev->dev, "failed to add hcd with err %d\n", ret);
+ goto err_add_hcd;
+ }
+
+ return 0;
+
+err_add_hcd:
+ omap3_stop_ohci(omap, hcd);
+
+err_start:
+ iounmap(omap->tll_base);
+
+err_tll_ioremap:
+ iounmap(omap->uhh_base);
+
+err_uhh_ioremap:
+ iounmap(hcd->regs);
+
+err_ioremap:
+ usb_put_hcd(hcd);
+
+err_create_hcd:
+ kfree(omap);
+err_pdata:
+err_disabled:
+ return ret;
+}
+
+/*
+ * may be called without controller electrically present
+ * may be called with controller, bus, and devices active
+ */
+
+/**
+ * ohci_hcd_omap3_remove - shutdown processing for OHCI HCDs
+ * @pdev: USB Host Controller being removed
+ *
+ * Reverses the effect of ohci_hcd_omap3_probe(), first invoking
+ * the HCD's stop() method. It is always called from a thread
+ * context, normally "rmmod", "apmd", or something similar.
+ */
+static int __devexit ohci_hcd_omap3_remove(struct platform_device *pdev)
+{
+ struct ohci_hcd_omap3 *omap = platform_get_drvdata(pdev);
+ struct usb_hcd *hcd = ohci_to_hcd(omap->ohci);
+
+ usb_remove_hcd(hcd);
+ omap3_stop_ohci(omap, hcd);
+ iounmap(hcd->regs);
+ iounmap(omap->tll_base);
+ iounmap(omap->uhh_base);
+ usb_put_hcd(hcd);
+ kfree(omap);
+
+ return 0;
+}
+
+static void ohci_hcd_omap3_shutdown(struct platform_device *pdev)
+{
+ struct ohci_hcd_omap3 *omap = platform_get_drvdata(pdev);
+ struct usb_hcd *hcd = ohci_to_hcd(omap->ohci);
+
+ if (hcd->driver->shutdown)
+ hcd->driver->shutdown(hcd);
+}
+
+static struct platform_driver ohci_hcd_omap3_driver = {
+ .probe = ohci_hcd_omap3_probe,
+ .remove = __devexit_p(ohci_hcd_omap3_remove),
+ .shutdown = ohci_hcd_omap3_shutdown,
+ .driver = {
+ .name = "ohci-omap3",
+ },
+};
+
+MODULE_ALIAS("platform:ohci-omap3");
+MODULE_AUTHOR("Anand Gadiyar <gadiyar@ti.com>");
generated by cgit v0.10.2 at 2024-11-15 16:47:47 (GMT)