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Merge branch 'usbhost17-for-mfd' of git://github.com/rogerq/linux into for-next

Browse source 
Signed-off-by: Samuel Ortiz <sameo@linux.intel.com>
This commit is contained in:
Samuel Ortiz 2013-02-14 00:27:29 +01:00
commit 3ec3090cf1
4 changed files with 472 additions and 340 deletions
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558
drivers/mfd/omap-usb-host.c
View file

@ -23,7 +23,6 @@
#include <linux/delay.h>
#include <linux/clk.h>
#include <linux/dma-mapping.h>
#include <linux/spinlock.h>
#include <linux/gpio.h>
#include <linux/platform_device.h>
#include <linux/platform_data/usb-omap.h>
@ -91,21 +90,23 @@
struct usbhs_hcd_omap {
int nports;
struct clk **utmi_clk;
struct clk **hsic60m_clk;
struct clk **hsic480m_clk;
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 *utmi_p1_gfclk;
struct clk *utmi_p2_gfclk;
struct clk *init_60m_fclk;
struct clk *ehci_logic_fck;
void __iomem *uhh_base;
struct usbhs_omap_platform_data platdata;
struct usbhs_omap_platform_data *pdata;
u32 usbhs_rev;
spinlock_t lock;
};
/*-------------------------------------------------------------------------*/
@ -184,19 +185,13 @@ static struct platform_device *omap_usbhs_alloc_child(const char *name,
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 usbhs_omap_platform_data *pdata = dev->platform_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");
@ -213,8 +208,8 @@ static int omap_usbhs_alloc_children(struct platform_device *pdev)
}
resources[1] = *res;
ehci = omap_usbhs_alloc_child(OMAP_EHCI_DEVICE, resources, 2, ehci_data,
sizeof(*ehci_data), dev);
ehci = omap_usbhs_alloc_child(OMAP_EHCI_DEVICE, resources, 2, pdata,
sizeof(*pdata), dev);
if (!ehci) {
dev_err(dev, "omap_usbhs_alloc_child failed\n");
@ -238,8 +233,8 @@ static int omap_usbhs_alloc_children(struct platform_device *pdev)
}
resources[1] = *res;
ohci = omap_usbhs_alloc_child(OMAP_OHCI_DEVICE, resources, 2, ohci_data,
sizeof(*ohci_data), dev);
ohci = omap_usbhs_alloc_child(OMAP_OHCI_DEVICE, resources, 2, pdata,
sizeof(*pdata), dev);
if (!ohci) {
dev_err(dev, "omap_usbhs_alloc_child failed\n");
ret = -ENOMEM;
@ -278,31 +273,52 @@ static bool is_ohci_port(enum usbhs_omap_port_mode pmode)
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;
struct usbhs_omap_platform_data *pdata = omap->pdata;
int i, r;
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))
if (!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);
for (i = 0; i < omap->nports; i++) {
switch (pdata->port_mode[i]) {
case OMAP_EHCI_PORT_MODE_HSIC:
if (!IS_ERR(omap->hsic60m_clk[i])) {
r = clk_enable(omap->hsic60m_clk[i]);
if (r) {
dev_err(dev,
"Can't enable port %d hsic60m clk:%d\n",
i, r);
}
}
clk_enable(omap->utmi_p1_fck);
clk_enable(omap->utmi_p2_fck);
if (!IS_ERR(omap->hsic480m_clk[i])) {
r = clk_enable(omap->hsic480m_clk[i]);
if (r) {
dev_err(dev,
"Can't enable port %d hsic480m clk:%d\n",
i, r);
}
}
/* Fall through as HSIC mode needs utmi_clk */
spin_unlock_irqrestore(&omap->lock, flags);
case OMAP_EHCI_PORT_MODE_TLL:
if (!IS_ERR(omap->utmi_clk[i])) {
r = clk_enable(omap->utmi_clk[i]);
if (r) {
dev_err(dev,
"Can't enable port %d clk : %d\n",
i, r);
}
}
break;
default:
break;
}
}
return 0;
}
@ -310,51 +326,122 @@ static int usbhs_runtime_resume(struct device *dev)
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;
struct usbhs_omap_platform_data *pdata = omap->pdata;
int i;
dev_dbg(dev, "usbhs_runtime_suspend\n");
if (!pdata) {
dev_dbg(dev, "missing platform_data\n");
return -ENODEV;
for (i = 0; i < omap->nports; i++) {
switch (pdata->port_mode[i]) {
case OMAP_EHCI_PORT_MODE_HSIC:
if (!IS_ERR(omap->hsic60m_clk[i]))
clk_disable(omap->hsic60m_clk[i]);
if (!IS_ERR(omap->hsic480m_clk[i]))
clk_disable(omap->hsic480m_clk[i]);
/* Fall through as utmi_clks were used in HSIC mode */
case OMAP_EHCI_PORT_MODE_TLL:
if (!IS_ERR(omap->utmi_clk[i]))
clk_disable(omap->utmi_clk[i]);
break;
default:
break;
}
}
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))
if (!IS_ERR(omap->ehci_logic_fck))
clk_disable(omap->ehci_logic_fck);
spin_unlock_irqrestore(&omap->lock, flags);
omap_tll_disable();
return 0;
}
static unsigned omap_usbhs_rev1_hostconfig(struct usbhs_hcd_omap *omap,
unsigned reg)
{
struct usbhs_omap_platform_data *pdata = omap->pdata;
int i;
for (i = 0; i < omap->nports; i++) {
switch (pdata->port_mode[i]) {
case OMAP_USBHS_PORT_MODE_UNUSED:
reg &= ~(OMAP_UHH_HOSTCONFIG_P1_CONNECT_STATUS << i);
break;
case OMAP_EHCI_PORT_MODE_PHY:
if (pdata->single_ulpi_bypass)
break;
if (i == 0)
reg &= ~OMAP_UHH_HOSTCONFIG_ULPI_P1_BYPASS;
else
reg &= ~(OMAP_UHH_HOSTCONFIG_ULPI_P2_BYPASS
<< (i-1));
break;
default:
if (pdata->single_ulpi_bypass)
break;
if (i == 0)
reg |= OMAP_UHH_HOSTCONFIG_ULPI_P1_BYPASS;
else
reg |= OMAP_UHH_HOSTCONFIG_ULPI_P2_BYPASS
<< (i-1);
break;
}
}
if (pdata->single_ulpi_bypass) {
/* bypass ULPI only if none of the ports use PHY mode */
reg |= OMAP_UHH_HOSTCONFIG_ULPI_BYPASS;
for (i = 0; i < omap->nports; i++) {
if (is_ehci_phy_mode(pdata->port_mode[i])) {
reg &= OMAP_UHH_HOSTCONFIG_ULPI_BYPASS;
break;
}
}
}
return reg;
}
static unsigned omap_usbhs_rev2_hostconfig(struct usbhs_hcd_omap *omap,
unsigned reg)
{
struct usbhs_omap_platform_data *pdata = omap->pdata;
int i;
for (i = 0; i < omap->nports; i++) {
/* Clear port mode fields for PHY mode */
reg &= ~(OMAP4_P1_MODE_CLEAR << 2 * i);
if (is_ehci_tll_mode(pdata->port_mode[i]) ||
(is_ohci_port(pdata->port_mode[i])))
reg |= OMAP4_P1_MODE_TLL << 2 * i;
else if (is_ehci_hsic_mode(pdata->port_mode[i]))
reg |= OMAP4_P1_MODE_HSIC << 2 * i;
}
return reg;
}
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;
struct usbhs_omap_platform_data *pdata = omap->pdata;
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],
if (pdata->phy_reset) {
if (gpio_is_valid(pdata->reset_gpio_port[0]))
gpio_request_one(pdata->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],
if (gpio_is_valid(pdata->reset_gpio_port[1]))
gpio_request_one(pdata->reset_gpio_port[1],
GPIOF_OUT_INIT_LOW, "USB2 PHY reset");
/* Hold the PHY in RESET for enough time till DIR is high */
@ -362,9 +449,6 @@ static void omap_usbhs_init(struct device *dev)
}
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 */
@ -374,89 +458,51 @@ static void omap_usbhs_init(struct device *dev)
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;
switch (omap->usbhs_rev) {
case OMAP_USBHS_REV1:
omap_usbhs_rev1_hostconfig(omap, reg);
break;
/* Bypass the TLL module for PHY mode operation */
if (pdata->single_ulpi_bypass) {
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;
case OMAP_USBHS_REV2:
omap_usbhs_rev2_hostconfig(omap, reg);
break;
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;
default: /* newer revisions */
omap_usbhs_rev2_hostconfig(omap, reg);
break;
}
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) {
if (pdata->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]))
if (gpio_is_valid(pdata->reset_gpio_port[0]))
gpio_set_value_cansleep
(pdata->ehci_data->reset_gpio_port[0], 1);
(pdata->reset_gpio_port[0], 1);
if (gpio_is_valid(pdata->ehci_data->reset_gpio_port[1]))
if (gpio_is_valid(pdata->reset_gpio_port[1]))
gpio_set_value_cansleep
(pdata->ehci_data->reset_gpio_port[1], 1);
(pdata->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;
struct usbhs_omap_platform_data *pdata = omap->pdata;
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 (pdata->phy_reset) {
if (gpio_is_valid(pdata->reset_gpio_port[0]))
gpio_free(pdata->reset_gpio_port[0]);
if (gpio_is_valid(pdata->ehci_data->reset_gpio_port[1]))
gpio_free(pdata->ehci_data->reset_gpio_port[1]);
if (gpio_is_valid(pdata->reset_gpio_port[1]))
gpio_free(pdata->reset_gpio_port[1]);
}
}
@ -474,137 +520,185 @@ static int usbhs_omap_probe(struct platform_device *pdev)
struct resource *res;
int ret = 0;
int i;
bool need_logic_fck;
if (!pdata) {
dev_err(dev, "Missing platform data\n");
ret = -ENOMEM;
goto end_probe;
return -ENODEV;
}
omap = kzalloc(sizeof(*omap), GFP_KERNEL);
omap = devm_kzalloc(dev, sizeof(*omap), GFP_KERNEL);
if (!omap) {
dev_err(dev, "Memory allocation failed\n");
ret = -ENOMEM;
goto end_probe;
return -ENOMEM;
}
spin_lock_init(&omap->lock);
res = platform_get_resource_byname(pdev, IORESOURCE_MEM, "uhh");
omap->uhh_base = devm_request_and_ioremap(dev, res);
if (!omap->uhh_base) {
dev_err(dev, "Resource request/ioremap failed\n");
return -EADDRNOTAVAIL;
}
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->pdata = pdata;
pm_runtime_enable(dev);
platform_set_drvdata(pdev, omap);
pm_runtime_get_sync(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);
}
omap->usbhs_rev = usbhs_read(omap->uhh_base, OMAP_UHH_REVISION);
/* we need to call runtime suspend before we update omap->nports
* to prevent unbalanced clk_disable()
*/
pm_runtime_put_sync(dev);
/*
* If platform data contains nports then use that
* else make out number of ports from USBHS revision
*/
if (pdata->nports) {
omap->nports = pdata->nports;
} else {
switch (omap->usbhs_rev) {
case OMAP_USBHS_REV1:
omap->nports = 3;
break;
case OMAP_USBHS_REV2:
omap->nports = 2;
break;
default:
omap->nports = OMAP3_HS_USB_PORTS;
dev_dbg(dev,
"USB HOST Rev:0x%d not recognized, assuming %d ports\n",
omap->usbhs_rev, omap->nports);
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;
i = sizeof(struct clk *) * omap->nports;
omap->utmi_clk = devm_kzalloc(dev, i, GFP_KERNEL);
omap->hsic480m_clk = devm_kzalloc(dev, i, GFP_KERNEL);
omap->hsic60m_clk = devm_kzalloc(dev, i, GFP_KERNEL);
if (!omap->utmi_clk || !omap->hsic480m_clk || !omap->hsic60m_clk) {
dev_err(dev, "Memory allocation failed\n");
ret = -ENOMEM;
goto err_mem;
}
need_logic_fck = false;
for (i = 0; i < omap->nports; i++) {
if (is_ehci_phy_mode(i) || is_ehci_tll_mode(i) ||
is_ehci_hsic_mode(i))
need_logic_fck |= true;
}
omap->ehci_logic_fck = ERR_PTR(-EINVAL);
if (need_logic_fck) {
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_dbg(dev, "ehci_logic_fck failed:%d\n", ret);
}
}
omap->utmi_p1_gfclk = clk_get(dev, "utmi_p1_gfclk");
if (IS_ERR(omap->utmi_p1_gfclk)) {
ret = PTR_ERR(omap->utmi_p1_gfclk);
dev_err(dev, "utmi_p1_gfclk failed error:%d\n", ret);
goto err_p1_gfclk;
}
omap->utmi_p2_gfclk = clk_get(dev, "utmi_p2_gfclk");
if (IS_ERR(omap->utmi_p2_gfclk)) {
ret = PTR_ERR(omap->utmi_p2_gfclk);
dev_err(dev, "utmi_p2_gfclk failed error:%d\n", ret);
goto err_p2_gfclk;
}
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;
goto err_xclk60mhsp1;
}
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;
goto err_xclk60mhsp2;
}
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;
goto err_init60m;
}
for (i = 0; i < omap->nports; i++) {
char clkname[30];
/* clock names are indexed from 1*/
snprintf(clkname, sizeof(clkname),
"usb_host_hs_utmi_p%d_clk", i + 1);
/* If a clock is not found we won't bail out as not all
* platforms have all clocks and we can function without
* them
*/
omap->utmi_clk[i] = clk_get(dev, clkname);
if (IS_ERR(omap->utmi_clk[i]))
dev_dbg(dev, "Failed to get clock : %s : %ld\n",
clkname, PTR_ERR(omap->utmi_clk[i]));
snprintf(clkname, sizeof(clkname),
"usb_host_hs_hsic480m_p%d_clk", i + 1);
omap->hsic480m_clk[i] = clk_get(dev, clkname);
if (IS_ERR(omap->hsic480m_clk[i]))
dev_dbg(dev, "Failed to get clock : %s : %ld\n",
clkname, PTR_ERR(omap->hsic480m_clk[i]));
snprintf(clkname, sizeof(clkname),
"usb_host_hs_hsic60m_p%d_clk", i + 1);
omap->hsic60m_clk[i] = clk_get(dev, clkname);
if (IS_ERR(omap->hsic60m_clk[i]))
dev_dbg(dev, "Failed to get clock : %s : %ld\n",
clkname, PTR_ERR(omap->hsic60m_clk[i]));
}
if (is_ehci_phy_mode(pdata->port_mode[0])) {
/* for OMAP3 , the clk set paretn fails */
ret = clk_set_parent(omap->utmi_p1_fck,
/* for OMAP3, clk_set_parent fails */
ret = clk_set_parent(omap->utmi_p1_gfclk,
omap->xclk60mhsp1_ck);
if (ret != 0)
dev_err(dev, "xclk60mhsp1_ck set parent"
"failed error:%d\n", ret);
dev_dbg(dev, "xclk60mhsp1_ck set parent failed: %d\n",
ret);
} else if (is_ehci_tll_mode(pdata->port_mode[0])) {
ret = clk_set_parent(omap->utmi_p1_fck,
ret = clk_set_parent(omap->utmi_p1_gfclk,
omap->init_60m_fclk);
if (ret != 0)
dev_err(dev, "init_60m_fclk set parent"
"failed error:%d\n", ret);
dev_dbg(dev, "P0 init_60m_fclk set parent failed: %d\n",
ret);
}
if (is_ehci_phy_mode(pdata->port_mode[1])) {
ret = clk_set_parent(omap->utmi_p2_fck,
ret = clk_set_parent(omap->utmi_p2_gfclk,
omap->xclk60mhsp2_ck);
if (ret != 0)
dev_err(dev, "xclk60mhsp2_ck set parent"
"failed error:%d\n", ret);
dev_dbg(dev, "xclk60mhsp2_ck set parent failed: %d\n",
ret);
} else if (is_ehci_tll_mode(pdata->port_mode[1])) {
ret = clk_set_parent(omap->utmi_p2_fck,
ret = clk_set_parent(omap->utmi_p2_gfclk,
omap->init_60m_fclk);
if (ret != 0)
dev_err(dev, "init_60m_fclk set parent"
"failed error:%d\n", ret);
dev_dbg(dev, "P1 init_60m_fclk set parent failed: %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) {
@ -612,39 +706,41 @@ static int usbhs_omap_probe(struct platform_device *pdev)
goto err_alloc;
}
goto end_probe;
return 0;
err_alloc:
omap_usbhs_deinit(&pdev->dev);
iounmap(omap->uhh_base);
err_init_60m_fclk:
for (i = 0; i < omap->nports; i++) {
if (!IS_ERR(omap->utmi_clk[i]))
clk_put(omap->utmi_clk[i]);
if (!IS_ERR(omap->hsic60m_clk[i]))
clk_put(omap->hsic60m_clk[i]);
if (!IS_ERR(omap->hsic480m_clk[i]))
clk_put(omap->hsic480m_clk[i]);
}
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:
err_init60m:
clk_put(omap->xclk60mhsp2_ck);
err_utmi_p2_fck:
clk_put(omap->utmi_p2_fck);
err_xclk60mhsp1_ck:
err_xclk60mhsp2:
clk_put(omap->xclk60mhsp1_ck);
err_utmi_p1_fck:
clk_put(omap->utmi_p1_fck);
err_xclk60mhsp1:
clk_put(omap->utmi_p2_gfclk);
err_end:
clk_put(omap->ehci_logic_fck);
err_p2_gfclk:
clk_put(omap->utmi_p1_gfclk);
err_p1_gfclk:
if (!IS_ERR(omap->ehci_logic_fck))
clk_put(omap->ehci_logic_fck);
err_mem:
pm_runtime_disable(dev);
kfree(omap);
end_probe:
return ret;
}
@ -657,19 +753,29 @@ static int usbhs_omap_probe(struct platform_device *pdev)
static int usbhs_omap_remove(struct platform_device *pdev)
{
struct usbhs_hcd_omap *omap = platform_get_drvdata(pdev);
int i;
omap_usbhs_deinit(&pdev->dev);
iounmap(omap->uhh_base);
for (i = 0; i < omap->nports; i++) {
if (!IS_ERR(omap->utmi_clk[i]))
clk_put(omap->utmi_clk[i]);
if (!IS_ERR(omap->hsic60m_clk[i]))
clk_put(omap->hsic60m_clk[i]);
if (!IS_ERR(omap->hsic480m_clk[i]))
clk_put(omap->hsic480m_clk[i]);
}
clk_put(omap->init_60m_fclk);
clk_put(omap->usbhost_p2_fck);
clk_put(omap->usbhost_p1_fck);
clk_put(omap->utmi_p1_gfclk);
clk_put(omap->utmi_p2_gfclk);
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);
if (!IS_ERR(omap->ehci_logic_fck))
clk_put(omap->ehci_logic_fck);
pm_runtime_disable(&pdev->dev);
kfree(omap);
return 0;
}
@ -685,7 +791,7 @@ static struct platform_driver usbhs_omap_driver = {
.owner = THIS_MODULE,
.pm = &usbhsomap_dev_pm_ops,
},
.remove = __exit_p(usbhs_omap_remove),
.remove = usbhs_omap_remove,
};
MODULE_AUTHOR("Keshava Munegowda <keshava_mgowda@ti.com>");

247
drivers/mfd/omap-usb-tll.c
View file

@ -54,10 +54,13 @@
#define OMAP_TLL_CHANNEL_CONF(num) (0x040 + 0x004 * num)
#define OMAP_TLL_CHANNEL_CONF_FSLSMODE_SHIFT 24
#define OMAP_TLL_CHANNEL_CONF_DRVVBUS (1 << 16)
#define OMAP_TLL_CHANNEL_CONF_CHRGVBUS (1 << 15)
#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_MODE_TRANSPARENT_UTMI (2 << 1)
#define OMAP_TLL_CHANNEL_CONF_CHANMODE_FSLS (1 << 1)
#define OMAP_TLL_CHANNEL_CONF_CHANEN (1 << 0)
@ -92,21 +95,25 @@
#define OMAP_USBTLL_REV1 0x00000015 /* OMAP3 */
#define OMAP_USBTLL_REV2 0x00000018 /* OMAP 3630 */
#define OMAP_USBTLL_REV3 0x00000004 /* OMAP4 */
#define OMAP_USBTLL_REV4 0x00000006 /* OMAP5 */
#define is_ehci_tll_mode(x) (x == OMAP_EHCI_PORT_MODE_TLL)
/* only PHY and UNUSED modes don't need TLL */
#define omap_usb_mode_needs_tll(x) ((x) != OMAP_USBHS_PORT_MODE_UNUSED &&\
(x) != OMAP_EHCI_PORT_MODE_PHY)
struct usbtll_omap {
struct clk *usbtll_p1_fck;
struct clk *usbtll_p2_fck;
struct usbtll_omap_platform_data platdata;
/* secure the register updates */
spinlock_t lock;
int nch; /* num. of channels */
struct usbhs_omap_platform_data *pdata;
struct clk **ch_clk;
};
/*-------------------------------------------------------------------------*/
const char usbtll_driver_name[] = USBTLL_DRIVER_NAME;
struct platform_device *tll_pdev;
static const char usbtll_driver_name[] = USBTLL_DRIVER_NAME;
static struct device *tll_dev;
static DEFINE_SPINLOCK(tll_lock); /* serialize access to tll_dev */
/*-------------------------------------------------------------------------*/
@ -203,84 +210,84 @@ static unsigned ohci_omap3_fslsmode(enum usbhs_omap_port_mode mode)
static int usbtll_omap_probe(struct platform_device *pdev)
{
struct device *dev = &pdev->dev;
struct usbtll_omap_platform_data *pdata = dev->platform_data;
struct usbhs_omap_platform_data *pdata = dev->platform_data;
void __iomem *base;
struct resource *res;
struct usbtll_omap *tll;
unsigned reg;
unsigned long flags;
int ret = 0;
int i, ver, count;
int i, ver;
bool needs_tll;
dev_dbg(dev, "starting TI HSUSB TLL Controller\n");
tll = kzalloc(sizeof(struct usbtll_omap), GFP_KERNEL);
tll = devm_kzalloc(dev, sizeof(struct usbtll_omap), GFP_KERNEL);
if (!tll) {
dev_err(dev, "Memory allocation failed\n");
ret = -ENOMEM;
goto end;
return -ENOMEM;
}
spin_lock_init(&tll->lock);
for (i = 0; i < OMAP3_HS_USB_PORTS; i++)
tll->platdata.port_mode[i] = pdata->port_mode[i];
tll->usbtll_p1_fck = clk_get(dev, "usb_tll_hs_usb_ch0_clk");
if (IS_ERR(tll->usbtll_p1_fck)) {
ret = PTR_ERR(tll->usbtll_p1_fck);
dev_err(dev, "usbtll_p1_fck failed error:%d\n", ret);
goto err_tll;
if (!pdata) {
dev_err(dev, "Platform data missing\n");
return -ENODEV;
}
tll->usbtll_p2_fck = clk_get(dev, "usb_tll_hs_usb_ch1_clk");
if (IS_ERR(tll->usbtll_p2_fck)) {
ret = PTR_ERR(tll->usbtll_p2_fck);
dev_err(dev, "usbtll_p2_fck failed error:%d\n", ret);
goto err_usbtll_p1_fck;
}
tll->pdata = pdata;
res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
if (!res) {
dev_err(dev, "usb tll get resource failed\n");
ret = -ENODEV;
goto err_usbtll_p2_fck;
}
base = ioremap(res->start, resource_size(res));
base = devm_request_and_ioremap(dev, res);
if (!base) {
dev_err(dev, "TLL ioremap failed\n");
ret = -ENOMEM;
goto err_usbtll_p2_fck;
ret = -EADDRNOTAVAIL;
dev_err(dev, "Resource request/ioremap failed:%d\n", ret);
return ret;
}
platform_set_drvdata(pdev, tll);
pm_runtime_enable(dev);
pm_runtime_get_sync(dev);
spin_lock_irqsave(&tll->lock, flags);
ver = usbtll_read(base, OMAP_USBTLL_REVISION);
switch (ver) {
case OMAP_USBTLL_REV1:
case OMAP_USBTLL_REV2:
count = OMAP_TLL_CHANNEL_COUNT;
case OMAP_USBTLL_REV4:
tll->nch = OMAP_TLL_CHANNEL_COUNT;
break;
case OMAP_USBTLL_REV2:
case OMAP_USBTLL_REV3:
count = OMAP_REV2_TLL_CHANNEL_COUNT;
tll->nch = OMAP_REV2_TLL_CHANNEL_COUNT;
break;
default:
dev_err(dev, "TLL version failed\n");
ret = -ENODEV;
goto err_ioremap;
tll->nch = OMAP_TLL_CHANNEL_COUNT;
dev_dbg(dev,
"USB TLL Rev : 0x%x not recognized, assuming %d channels\n",
ver, tll->nch);
break;
}
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])) {
tll->ch_clk = devm_kzalloc(dev, sizeof(struct clk * [tll->nch]),
GFP_KERNEL);
if (!tll->ch_clk) {
ret = -ENOMEM;
dev_err(dev, "Couldn't allocate memory for channel clocks\n");
goto err_clk_alloc;
}
for (i = 0; i < tll->nch; i++) {
char clkname[] = "usb_tll_hs_usb_chx_clk";
snprintf(clkname, sizeof(clkname),
"usb_tll_hs_usb_ch%d_clk", i);
tll->ch_clk[i] = clk_get(dev, clkname);
if (IS_ERR(tll->ch_clk[i]))
dev_dbg(dev, "can't get clock : %s\n", clkname);
}
needs_tll = false;
for (i = 0; i < tll->nch; i++)
needs_tll |= omap_usb_mode_needs_tll(pdata->port_mode[i]);
if (needs_tll) {
/* Program Common TLL register */
reg = usbtll_read(base, OMAP_TLL_SHARED_CONF);
@ -292,7 +299,7 @@ static int usbtll_omap_probe(struct platform_device *pdev)
usbtll_write(base, OMAP_TLL_SHARED_CONF, reg);
/* Enable channels now */
for (i = 0; i < count; i++) {
for (i = 0; i < tll->nch; i++) {
reg = usbtll_read(base, OMAP_TLL_CHANNEL_CONF(i));
if (is_ohci_port(pdata->port_mode[i])) {
@ -308,6 +315,15 @@ static int usbtll_omap_probe(struct platform_device *pdev)
reg &= ~(OMAP_TLL_CHANNEL_CONF_UTMIAUTOIDLE
| OMAP_TLL_CHANNEL_CONF_ULPINOBITSTUFF
| OMAP_TLL_CHANNEL_CONF_ULPIDDRMODE);
} else if (pdata->port_mode[i] ==
OMAP_EHCI_PORT_MODE_HSIC) {
/*
* HSIC Mode requires UTMI port configurations
*/
reg |= OMAP_TLL_CHANNEL_CONF_DRVVBUS
| OMAP_TLL_CHANNEL_CONF_CHRGVBUS
| OMAP_TLL_CHANNEL_CONF_MODE_TRANSPARENT_UTMI
| OMAP_TLL_CHANNEL_CONF_ULPINOBITSTUFF;
} else {
continue;
}
@ -320,25 +336,18 @@ static int usbtll_omap_probe(struct platform_device *pdev)
}
}
err_ioremap:
spin_unlock_irqrestore(&tll->lock, flags);
iounmap(base);
pm_runtime_put_sync(dev);
tll_pdev = pdev;
if (!ret)
goto end;
/* only after this can omap_tll_enable/disable work */
spin_lock(&tll_lock);
tll_dev = dev;
spin_unlock(&tll_lock);
return 0;
err_clk_alloc:
pm_runtime_put_sync(dev);
pm_runtime_disable(dev);
err_usbtll_p2_fck:
clk_put(tll->usbtll_p2_fck);
err_usbtll_p1_fck:
clk_put(tll->usbtll_p1_fck);
err_tll:
kfree(tll);
end:
return ret;
}
@ -351,63 +360,61 @@ static int usbtll_omap_probe(struct platform_device *pdev)
static int usbtll_omap_remove(struct platform_device *pdev)
{
struct usbtll_omap *tll = platform_get_drvdata(pdev);
int i;
spin_lock(&tll_lock);
tll_dev = NULL;
spin_unlock(&tll_lock);
for (i = 0; i < tll->nch; i++)
if (!IS_ERR(tll->ch_clk[i]))
clk_put(tll->ch_clk[i]);
clk_put(tll->usbtll_p2_fck);
clk_put(tll->usbtll_p1_fck);
pm_runtime_disable(&pdev->dev);
kfree(tll);
return 0;
}
static int usbtll_runtime_resume(struct device *dev)
{
struct usbtll_omap *tll = dev_get_drvdata(dev);
struct usbtll_omap_platform_data *pdata = &tll->platdata;
unsigned long flags;
struct usbhs_omap_platform_data *pdata = tll->pdata;
int i;
dev_dbg(dev, "usbtll_runtime_resume\n");
if (!pdata) {
dev_dbg(dev, "missing platform_data\n");
return -ENODEV;
for (i = 0; i < tll->nch; i++) {
if (omap_usb_mode_needs_tll(pdata->port_mode[i])) {
int r;
if (IS_ERR(tll->ch_clk[i]))
continue;
r = clk_enable(tll->ch_clk[i]);
if (r) {
dev_err(dev,
"Error enabling ch %d clock: %d\n", i, r);
}
}
}
spin_lock_irqsave(&tll->lock, flags);
if (is_ehci_tll_mode(pdata->port_mode[0]))
clk_enable(tll->usbtll_p1_fck);
if (is_ehci_tll_mode(pdata->port_mode[1]))
clk_enable(tll->usbtll_p2_fck);
spin_unlock_irqrestore(&tll->lock, flags);
return 0;
}
static int usbtll_runtime_suspend(struct device *dev)
{
struct usbtll_omap *tll = dev_get_drvdata(dev);
struct usbtll_omap_platform_data *pdata = &tll->platdata;
unsigned long flags;
struct usbhs_omap_platform_data *pdata = tll->pdata;
int i;
dev_dbg(dev, "usbtll_runtime_suspend\n");
if (!pdata) {
dev_dbg(dev, "missing platform_data\n");
return -ENODEV;
for (i = 0; i < tll->nch; i++) {
if (omap_usb_mode_needs_tll(pdata->port_mode[i])) {
if (!IS_ERR(tll->ch_clk[i]))
clk_disable(tll->ch_clk[i]);
}
}
spin_lock_irqsave(&tll->lock, flags);
if (is_ehci_tll_mode(pdata->port_mode[0]))
clk_disable(tll->usbtll_p1_fck);
if (is_ehci_tll_mode(pdata->port_mode[1]))
clk_disable(tll->usbtll_p2_fck);
spin_unlock_irqrestore(&tll->lock, flags);
return 0;
}
@ -429,21 +436,39 @@ static struct platform_driver usbtll_omap_driver = {
int omap_tll_enable(void)
{
if (!tll_pdev) {
pr_err("missing omap usbhs tll platform_data\n");
return -ENODEV;
int ret;
spin_lock(&tll_lock);
if (!tll_dev) {
pr_err("%s: OMAP USB TLL not initialized\n", __func__);
ret = -ENODEV;
} else {
ret = pm_runtime_get_sync(tll_dev);
}
return pm_runtime_get_sync(&tll_pdev->dev);
spin_unlock(&tll_lock);
return ret;
}
EXPORT_SYMBOL_GPL(omap_tll_enable);
int omap_tll_disable(void)
{
if (!tll_pdev) {
pr_err("missing omap usbhs tll platform_data\n");
return -ENODEV;
int ret;
spin_lock(&tll_lock);
if (!tll_dev) {
pr_err("%s: OMAP USB TLL not initialized\n", __func__);
ret = -ENODEV;
} else {
ret = pm_runtime_put_sync(tll_dev);
}
return pm_runtime_put_sync(&tll_pdev->dev);
spin_unlock(&tll_lock);
return ret;
}
EXPORT_SYMBOL_GPL(omap_tll_disable);

6
drivers/usb/host/ehci-omap.c
View file

@ -107,7 +107,7 @@ static int omap_ehci_init(struct usb_hcd *hcd)
{
struct ehci_hcd *ehci = hcd_to_ehci(hcd);
int rc;
struct ehci_hcd_omap_platform_data *pdata;
struct usbhs_omap_platform_data *pdata;
pdata = hcd->self.controller->platform_data;
@ -151,7 +151,7 @@ static int omap_ehci_init(struct usb_hcd *hcd)
}
static void disable_put_regulator(
struct ehci_hcd_omap_platform_data *pdata)
struct usbhs_omap_platform_data *pdata)
{
int i;
@ -176,7 +176,7 @@ static void disable_put_regulator(
static int ehci_hcd_omap_probe(struct platform_device *pdev)
{
struct device *dev = &pdev->dev;
struct ehci_hcd_omap_platform_data *pdata = dev->platform_data;
struct usbhs_omap_platform_data *pdata = dev->platform_data;
struct resource *res;
struct usb_hcd *hcd;
void __iomem *regs;

1
include/linux/platform_data/usb-omap.h
View file

@ -55,6 +55,7 @@ struct ohci_hcd_omap_platform_data {
};
struct usbhs_omap_platform_data {
int nports;
enum usbhs_omap_port_mode port_mode[OMAP3_HS_USB_PORTS];
int reset_gpio_port[OMAP3_HS_USB_PORTS];
struct regulator *regulator[OMAP3_HS_USB_PORTS];