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linux/drivers/mfd/omap-usb-host.c
Keshava Munegowda 760189b362 mfd: omap-usb-host: Remove TLL specific code from USB HS core driver 
The TLL specific code such as channels clocks enable/disable,
initialization functions are removed from the USBHS core
driver. The hwmod of the usb tll is retrieved and omap device
build is performed to created the platform device for the
usb tll component.

Signed-off-by: Keshava Munegowda <keshava_mgowda@ti.com>
Reviewed-by: Partha Basak <parthab@india.ti.com>
Acked-by: Felipe Balbi <balbi@ti.com>
Signed-off-by: Samuel Ortiz <sameo@linux.intel.com>
2012-09-21 23:40:33 +02:00

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/**
* 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/module.h>
#include <linux/types.h>
#include <linux/slab.h>
#include <linux/delay.h>
#include <linux/clk.h>
#include <linux/dma-mapping.h>
#include <linux/spinlock.h>
#include <linux/gpio.h>
#include <plat/cpu.h>
#include <plat/usb.h>
#include <linux/pm_runtime.h>
#define USBHS_DRIVER_NAME "usbhs_omap"
#define OMAP_EHCI_DEVICE "ehci-omap"
#define OMAP_OHCI_DEVICE "ohci-omap3"
/* OMAP USBHOST Register addresses */
/* 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_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 *xclk60mhsp1_ck;
struct clk *xclk60mhsp2_ck;
struct clk *utmi_p1_fck;
struct clk *usbhost_p1_fck;
struct clk *utmi_p2_fck;
struct clk *usbhost_p2_fck;
struct clk *init_60m_fclk;
struct clk *ehci_logic_fck;
void __iomem *uhh_base;
struct usbhs_omap_platform_data platdata;
u32 usbhs_rev;
spinlock_t lock;
};
/*-------------------------------------------------------------------------*/
const char usbhs_driver_name[] = USBHS_DRIVER_NAME;
static u64 usbhs_dmamask = DMA_BIT_MASK(32);
/*-------------------------------------------------------------------------*/
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;
dma_set_coherent_mask(&child->dev, DMA_BIT_MASK(32));
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");
ret = -ENOMEM;
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");
ret = -ENOMEM;
goto err_ehci;
}
return 0;
err_ehci:
platform_device_unregister(ehci);
err_end:
return ret;
}
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;
}
}
static int usbhs_runtime_resume(struct device *dev)
{
struct usbhs_hcd_omap *omap = dev_get_drvdata(dev);
struct usbhs_omap_platform_data *pdata = &omap->platdata;
unsigned long flags;
dev_dbg(dev, "usbhs_runtime_resume\n");
if (!pdata) {
dev_dbg(dev, "missing platform_data\n");
return -ENODEV;
}
omap_tll_enable();
spin_lock_irqsave(&omap->lock, flags);
if (omap->ehci_logic_fck && !IS_ERR(omap->ehci_logic_fck))
clk_enable(omap->ehci_logic_fck);
if (is_ehci_tll_mode(pdata->port_mode[0]))
clk_enable(omap->usbhost_p1_fck);
if (is_ehci_tll_mode(pdata->port_mode[1]))
clk_enable(omap->usbhost_p2_fck);
clk_enable(omap->utmi_p1_fck);
clk_enable(omap->utmi_p2_fck);
spin_unlock_irqrestore(&omap->lock, flags);
return 0;
}
static int usbhs_runtime_suspend(struct device *dev)
{
struct usbhs_hcd_omap *omap = dev_get_drvdata(dev);
struct usbhs_omap_platform_data *pdata = &omap->platdata;
unsigned long flags;
dev_dbg(dev, "usbhs_runtime_suspend\n");
if (!pdata) {
dev_dbg(dev, "missing platform_data\n");
return -ENODEV;
}
spin_lock_irqsave(&omap->lock, flags);
if (is_ehci_tll_mode(pdata->port_mode[0]))
clk_disable(omap->usbhost_p1_fck);
if (is_ehci_tll_mode(pdata->port_mode[1]))
clk_disable(omap->usbhost_p2_fck);
clk_disable(omap->utmi_p2_fck);
clk_disable(omap->utmi_p1_fck);
if (omap->ehci_logic_fck && !IS_ERR(omap->ehci_logic_fck))
clk_disable(omap->ehci_logic_fck);
spin_unlock_irqrestore(&omap->lock, flags);
omap_tll_disable();
return 0;
}
static void omap_usbhs_init(struct device *dev)
{
struct usbhs_hcd_omap *omap = dev_get_drvdata(dev);
struct usbhs_omap_platform_data *pdata = &omap->platdata;
unsigned long flags;
unsigned reg;
dev_dbg(dev, "starting TI HSUSB Controller\n");
if (pdata->ehci_data->phy_reset) {
if (gpio_is_valid(pdata->ehci_data->reset_gpio_port[0]))
gpio_request_one(pdata->ehci_data->reset_gpio_port[0],
GPIOF_OUT_INIT_LOW, "USB1 PHY reset");
if (gpio_is_valid(pdata->ehci_data->reset_gpio_port[1]))
gpio_request_one(pdata->ehci_data->reset_gpio_port[1],
GPIOF_OUT_INIT_LOW, "USB2 PHY reset");
/* Hold the PHY in RESET for enough time till DIR is high */
udelay(10);
}
pm_runtime_get_sync(dev);
spin_lock_irqsave(&omap->lock, flags);
omap->usbhs_rev = usbhs_read(omap->uhh_base, OMAP_UHH_REVISION);
dev_dbg(dev, "OMAP UHH_REVISION 0x%x\n", omap->usbhs_rev);
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_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);
spin_unlock_irqrestore(&omap->lock, flags);
pm_runtime_put_sync(dev);
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_cansleep
(pdata->ehci_data->reset_gpio_port[0], 1);
if (gpio_is_valid(pdata->ehci_data->reset_gpio_port[1]))
gpio_set_value_cansleep
(pdata->ehci_data->reset_gpio_port[1], 1);
}
}
static void omap_usbhs_deinit(struct device *dev)
{
struct usbhs_hcd_omap *omap = dev_get_drvdata(dev);
struct usbhs_omap_platform_data *pdata = &omap->platdata;
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]);
}
}
/**
* 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 platform 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;
pm_runtime_enable(dev);
for (i = 0; i < OMAP3_HS_USB_PORTS; i++)
if (is_ehci_phy_mode(i) || is_ehci_tll_mode(i) ||
is_ehci_hsic_mode(i)) {
omap->ehci_logic_fck = clk_get(dev, "ehci_logic_fck");
if (IS_ERR(omap->ehci_logic_fck)) {
ret = PTR_ERR(omap->ehci_logic_fck);
dev_warn(dev, "ehci_logic_fck failed:%d\n",
ret);
}
break;
}
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_end;
}
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->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_usbhost_p1_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_usbhost_p2_fck;
}
if (is_ehci_phy_mode(pdata->port_mode[0])) {
/* for OMAP3 , the clk set paretn fails */
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);
} 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);
}
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, "xclk60mhsp2_ck set parent"
"failed error:%d\n", ret);
} 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);
}
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;
}
platform_set_drvdata(pdev, omap);
omap_usbhs_init(dev);
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:
omap_usbhs_deinit(&pdev->dev);
iounmap(omap->uhh_base);
err_init_60m_fclk:
clk_put(omap->init_60m_fclk);
err_usbhost_p2_fck:
clk_put(omap->usbhost_p2_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_end:
clk_put(omap->ehci_logic_fck);
pm_runtime_disable(dev);
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);
omap_usbhs_deinit(&pdev->dev);
iounmap(omap->uhh_base);
clk_put(omap->init_60m_fclk);
clk_put(omap->usbhost_p2_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->ehci_logic_fck);
pm_runtime_disable(&pdev->dev);
kfree(omap);
return 0;
}
static const struct dev_pm_ops usbhsomap_dev_pm_ops = {
.runtime_suspend = usbhs_runtime_suspend,
.runtime_resume = usbhs_runtime_resume,
};
static struct platform_driver usbhs_omap_driver = {
.driver = {
.name = (char *)usbhs_driver_name,
.owner = THIS_MODULE,
.pm = &usbhsomap_dev_pm_ops,
},
.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.
* This usbhs core driver should be initialized after
* usb tll driver
*/
fs_initcall_sync(omap_usbhs_drvinit);
static void __exit omap_usbhs_drvexit(void)
{
platform_driver_unregister(&usbhs_omap_driver);
}
module_exit(omap_usbhs_drvexit);
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