/*-------------------------------------------------------------------------
*
*/
static int setup_tll(struct ehci_hcd_omap *omap)
{
unsigned long timeout = jiffies + msecs_to_jiffies(1000);
int ret = 0;
u8 tll_ch_mask = 0;
/* perform TLL soft reset, and wait until reset is complete */
ehci_omap_writel(omap->tll_base, OMAP_USBTLL_SYSCONFIG,
OMAP_USBTLL_SYSCONFIG_SOFTRESET);
/* Wait for TLL reset to complete */
while (!(ehci_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;
return ret;
}
}
dev_dbg(omap->dev, "TLL RESET DONE\n");
/* (1<<3) = no idle mode only for initial debugging */
ehci_omap_writel(omap->tll_base, OMAP_USBTLL_SYSCONFIG,
OMAP_USBTLL_SYSCONFIG_ENAWAKEUP |
OMAP_USBTLL_SYSCONFIG_SIDLEMODE |
OMAP_USBTLL_SYSCONFIG_CACTIVITY);
if (omap->port_mode[0] == EHCI_HCD_OMAP_MODE_TLL)
tll_ch_mask |= OMAP_TLL_CHANNEL_1_EN_MASK;
if (omap->port_mode[1] == EHCI_HCD_OMAP_MODE_TLL)
tll_ch_mask |= OMAP_TLL_CHANNEL_2_EN_MASK;
if (!cpu_is_omap44xx()) {
if (omap->port_mode[2] == EHCI_HCD_OMAP_MODE_TLL)
tll_ch_mask |= OMAP_TLL_CHANNEL_3_EN_MASK;
if (tll_ch_mask != 0)
omap_usb_utmi_init(omap, tll_ch_mask,OMAP_TLL_CHANNEL_COUNT);
} else {
if (tll_ch_mask != 0)
omap_usb_utmi_init(omap, tll_ch_mask, OMAP4_TLL_CHANNEL_COUNT);
}
return ret;
}
/* omap_start_ehc
* - Start the TI USBHOST controller
*/
static int omap_start_ehc(struct ehci_hcd_omap *omap, struct usb_hcd *hcd)
{
unsigned long timeout = jiffies + msecs_to_jiffies(1000);
u8 tll_ch_mask = 0;
unsigned reg = 0;
int ret = 0;
dev_dbg(omap->dev, "starting TI EHCI USB Controller\n");
/* Enable Clocks for USBHOST */
omap->usbhost_ick = clk_get(omap->dev, "usbhost_ick");
if (IS_ERR(omap->usbhost_ick)) {
ret = PTR_ERR(omap->usbhost_ick);
goto err_host_ick;
}
clk_enable(omap->usbhost_ick);
omap->usbhost2_120m_fck = clk_get(omap->dev, "usbhost_120m_fck");
if (IS_ERR(omap->usbhost2_120m_fck)) {
ret = PTR_ERR(omap->usbhost2_120m_fck);
goto err_host_120m_fck;
}
clk_enable(omap->usbhost2_120m_fck);
omap->usbhost1_48m_fck = clk_get(omap->dev, "usbhost_48m_fck");
if (IS_ERR(omap->usbhost1_48m_fck)) {
ret = PTR_ERR(omap->usbhost1_48m_fck);
goto err_host_48m_fck;
}
clk_enable(omap->usbhost1_48m_fck);
if (omap->phy_reset) {
/* Refer: ISSUE1 */
if (gpio_is_valid(omap->reset_gpio_port[0])) {
gpio_request(omap->reset_gpio_port[0],
"USB1 PHY reset");
gpio_direction_output(omap->reset_gpio_port[0], 0);
}
if (gpio_is_valid(omap->reset_gpio_port[1])) {
gpio_request(omap->reset_gpio_port[1],
"USB2 PHY reset");
gpio_direction_output(omap->reset_gpio_port[1], 0);
}
/* Hold the PHY in RESET for enough time till DIR is high */
udelay(10);
}
/* Configure TLL for 60Mhz clk for ULPI */
omap->usbtll_fck = clk_get(omap->dev, "usbtll_fck");
if (IS_ERR(omap->usbtll_fck)) {
ret = PTR_ERR(omap->usbtll_fck);
goto err_tll_fck;
}
clk_enable(omap->usbtll_fck);
omap->usbtll_ick = clk_get(omap->dev, "usbtll_ick");
if (IS_ERR(omap->usbtll_ick)) {
ret = PTR_ERR(omap->usbtll_ick);
goto err_tll_ick;
}
clk_enable(omap->usbtll_ick);
/* perform TLL soft reset, and wait until reset is complete */
ehci_omap_writel(omap->tll_base, OMAP_USBTLL_SYSCONFIG,
OMAP_USBTLL_SYSCONFIG_SOFTRESET);
/* Wait for TLL reset to complete */
while (!(ehci_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 */
ehci_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 = ehci_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;
ehci_omap_writel(omap->uhh_base, OMAP_UHH_SYSCONFIG, reg);
reg = ehci_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;
if (omap->port_mode[0] == EHCI_HCD_OMAP_MODE_UNKNOWN)
reg &= ~OMAP_UHH_HOSTCONFIG_P1_CONNECT_STATUS;
if (omap->port_mode[1] == EHCI_HCD_OMAP_MODE_UNKNOWN)
reg &= ~OMAP_UHH_HOSTCONFIG_P2_CONNECT_STATUS;
if (omap->port_mode[2] == EHCI_HCD_OMAP_MODE_UNKNOWN)
reg &= ~OMAP_UHH_HOSTCONFIG_P3_CONNECT_STATUS;
/* Bypass the TLL module for PHY mode operation */
if (omap_rev() <= OMAP3430_REV_ES2_1) {
dev_dbg(omap->dev, "OMAP3 ES version <= ES2.1 \n");
if ((omap->port_mode[0] == EHCI_HCD_OMAP_MODE_PHY) ||
(omap->port_mode[1] == EHCI_HCD_OMAP_MODE_PHY) ||
(omap->port_mode[2] == EHCI_HCD_OMAP_MODE_PHY))
reg &= ~OMAP_UHH_HOSTCONFIG_ULPI_BYPASS;
else
reg |= OMAP_UHH_HOSTCONFIG_ULPI_BYPASS;
} else {
dev_dbg(omap->dev, "OMAP3 ES version > ES2.1\n");
if (omap->port_mode[0] == EHCI_HCD_OMAP_MODE_PHY)
reg &= ~OMAP_UHH_HOSTCONFIG_ULPI_P1_BYPASS;
else if (omap->port_mode[0] == EHCI_HCD_OMAP_MODE_TLL)
reg |= OMAP_UHH_HOSTCONFIG_ULPI_P1_BYPASS;
if (omap->port_mode[1] == EHCI_HCD_OMAP_MODE_PHY)
reg &= ~OMAP_UHH_HOSTCONFIG_ULPI_P2_BYPASS;
else if (omap->port_mode[1] == EHCI_HCD_OMAP_MODE_TLL)
reg |= OMAP_UHH_HOSTCONFIG_ULPI_P2_BYPASS;
if (omap->port_mode[2] == EHCI_HCD_OMAP_MODE_PHY)
reg &= ~OMAP_UHH_HOSTCONFIG_ULPI_P3_BYPASS;
else if (omap->port_mode[2] == EHCI_HCD_OMAP_MODE_TLL)
reg |= OMAP_UHH_HOSTCONFIG_ULPI_P3_BYPASS;
}
ehci_omap_writel(omap->uhh_base, OMAP_UHH_HOSTCONFIG, reg);
dev_dbg(omap->dev, "UHH setup done, uhh_hostconfig=%x\n", reg);
if ((omap->port_mode[0] == EHCI_HCD_OMAP_MODE_TLL) ||
(omap->port_mode[1] == EHCI_HCD_OMAP_MODE_TLL) ||
(omap->port_mode[2] == EHCI_HCD_OMAP_MODE_TLL)) {
if (omap->port_mode[0] == EHCI_HCD_OMAP_MODE_TLL)
tll_ch_mask |= OMAP_TLL_CHANNEL_1_EN_MASK;
if (omap->port_mode[1] == EHCI_HCD_OMAP_MODE_TLL)
tll_ch_mask |= OMAP_TLL_CHANNEL_2_EN_MASK;
if (omap->port_mode[2] == EHCI_HCD_OMAP_MODE_TLL)
tll_ch_mask |= OMAP_TLL_CHANNEL_3_EN_MASK;
/* Enable UTMI mode for required TLL channels */
omap_usb_utmi_init(omap, tll_ch_mask);
}
if (omap->phy_reset) {
/* Refer ISSUE1:
* Hold the PHY in RESET for enough time till
* PHY is settled and ready
*/
udelay(10);
if (gpio_is_valid(omap->reset_gpio_port[0]))
gpio_set_value(omap->reset_gpio_port[0], 1);
if (gpio_is_valid(omap->reset_gpio_port[1]))
gpio_set_value(omap->reset_gpio_port[1], 1);
}
return 0;
err_sys_status:
clk_disable(omap->usbtll_ick);
clk_put(omap->usbtll_ick);
err_tll_ick:
clk_disable(omap->usbtll_fck);
clk_put(omap->usbtll_fck);
err_tll_fck:
clk_disable(omap->usbhost1_48m_fck);
clk_put(omap->usbhost1_48m_fck);
if (omap->phy_reset) {
if (gpio_is_valid(omap->reset_gpio_port[0]))
gpio_free(omap->reset_gpio_port[0]);
if (gpio_is_valid(omap->reset_gpio_port[1]))
gpio_free(omap->reset_gpio_port[1]);
}
err_host_48m_fck:
clk_disable(omap->usbhost2_120m_fck);
clk_put(omap->usbhost2_120m_fck);
err_host_120m_fck:
clk_disable(omap->usbhost_ick);
clk_put(omap->usbhost_ick);
err_host_ick:
return ret;
}
/* omap_start_ehc
* - Start the TI USBHOST controller
*/
static int omap_start_ehc(struct ehci_hcd_omap *omap, struct usb_hcd *hcd)
{
unsigned long timeout = jiffies + msecs_to_jiffies(1000);
unsigned reg = 0;
int ret = 0;
int reset_delay;
int i;
dev_dbg(&omap->dev->dev, "starting TI EHCI USB Controller\n");
/* Enable Clocks for USBHOST */
omap->usbhost_ick = clk_get(&omap->dev->dev, "usbhost_ick");
if (IS_ERR(omap->usbhost_ick)) {
ret = PTR_ERR(omap->usbhost_ick);
goto err_host_ick;
}
clk_enable(omap->usbhost_ick);
omap->usbhost2_120m_fck = clk_get(&omap->dev->dev, "usbhost_120m_fck");
if (IS_ERR(omap->usbhost2_120m_fck)) {
ret = PTR_ERR(omap->usbhost2_120m_fck);
goto err_host_120m_fck;
}
clk_enable(omap->usbhost2_120m_fck);
omap->usbhost1_48m_fck = clk_get(&omap->dev->dev, "usbhost_48m_fck");
if (IS_ERR(omap->usbhost1_48m_fck)) {
ret = PTR_ERR(omap->usbhost1_48m_fck);
goto err_host_48m_fck;
}
clk_enable(omap->usbhost1_48m_fck);
reset_delay = 0;
for (i = 0; i < OMAP_TLL_CHANNEL_COUNT; i++) {
reset_delay = reset_delay > omap->port_data[i].reset_delay ?
reset_delay : omap->port_data[i].reset_delay;
if (omap->port_data[i].startup) {
ret = omap->port_data[i].startup(omap->dev, i);
if (ret < 0)
return ret;
}
if (omap->port_data[i].reset)
omap->port_data[i].reset(omap->dev, i, 0);
}
if (reset_delay)
udelay(reset_delay);
/* Configure TLL for 60Mhz clk for ULPI */
omap->usbtll_fck = clk_get(&omap->dev->dev, "usbtll_fck");
if (IS_ERR(omap->usbtll_fck)) {
ret = PTR_ERR(omap->usbtll_fck);
goto err_tll_fck;
}
clk_enable(omap->usbtll_fck);
omap->usbtll_ick = clk_get(&omap->dev->dev, "usbtll_ick");
if (IS_ERR(omap->usbtll_ick)) {
ret = PTR_ERR(omap->usbtll_ick);
goto err_tll_ick;
}
clk_enable(omap->usbtll_ick);
/* perform TLL soft reset, and wait until reset is complete */
ehci_omap_writel(omap->tll_base, OMAP_USBTLL_SYSCONFIG,
OMAP_USBTLL_SYSCONFIG_SOFTRESET);
/* Wait for TLL reset to complete */
while (!(ehci_omap_readl(omap->tll_base, OMAP_USBTLL_SYSSTATUS)
& OMAP_USBTLL_SYSSTATUS_RESETDONE)) {
cpu_relax();
if (time_after(jiffies, timeout)) {
dev_dbg(&omap->dev->dev, "operation timed out\n");
ret = -EINVAL;
goto err_sys_status;
}
}
dev_dbg(&omap->dev->dev, "TLL RESET DONE\n");
/* (1<<3) = no idle mode only for initial debugging */
ehci_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 */
ehci_omap_writel(omap->uhh_base, OMAP_UHH_SYSCONFIG,
OMAP_UHH_SYSCONFIG_ENAWAKEUP
| OMAP_UHH_SYSCONFIG_SIDLEMODE
| OMAP_UHH_SYSCONFIG_MIDLEMODE
| OMAP_UHH_SYSCONFIG_AUTOIDLE);
reg = ehci_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;
if (omap->port_data[0].flags != EHCI_HCD_OMAP_FLAG_ENABLED)
reg &= ~OMAP_UHH_HOSTCONFIG_P1_CONNECT_STATUS;
if (omap->port_data[1].flags != EHCI_HCD_OMAP_FLAG_ENABLED)
reg &= ~OMAP_UHH_HOSTCONFIG_P2_CONNECT_STATUS;
if (omap->port_data[2].flags != EHCI_HCD_OMAP_FLAG_ENABLED)
reg &= ~OMAP_UHH_HOSTCONFIG_P3_CONNECT_STATUS;
/* Bypass the TLL module for PHY mode operation */
if (omap_rev() <= OMAP3430_REV_ES2_1) {
dev_dbg(&omap->dev->dev, "OMAP3 ES version <= ES2.1 \n");
if (omap_usb_port_ulpi_bypass(omap->port_data[0].mode))
reg |= OMAP_UHH_HOSTCONFIG_ULPI_BYPASS;
else
reg &= ~OMAP_UHH_HOSTCONFIG_ULPI_BYPASS;
} else {
dev_dbg(&omap->dev->dev, "OMAP3 ES version > ES2.1\n");
if (omap_usb_port_ulpi_bypass(omap->port_data[0].mode))
reg |= OMAP_UHH_HOSTCONFIG_ULPI_P1_BYPASS;
else
reg &= ~OMAP_UHH_HOSTCONFIG_ULPI_P1_BYPASS;
if (omap_usb_port_ulpi_bypass(omap->port_data[1].mode))
reg |= OMAP_UHH_HOSTCONFIG_ULPI_P2_BYPASS;
else
reg &= ~OMAP_UHH_HOSTCONFIG_ULPI_P2_BYPASS;
if (omap_usb_port_ulpi_bypass(omap->port_data[2].mode))
reg |= OMAP_UHH_HOSTCONFIG_ULPI_P3_BYPASS;
else
reg &= ~OMAP_UHH_HOSTCONFIG_ULPI_P3_BYPASS;
}
ehci_omap_writel(omap->uhh_base, OMAP_UHH_HOSTCONFIG, reg);
dev_dbg(&omap->dev->dev, "UHH setup done, uhh_hostconfig=%x\n", reg);
/* Enable UTMI mode for required TLL channels */
omap_usb_utmi_init(omap);
reset_delay = 0;
for (i = 0; i < OMAP3_HS_USB_PORTS; i++) {
reset_delay = reset_delay > omap->port_data[i].reset_delay ?
reset_delay : omap->port_data[i].reset_delay;
}
if (reset_delay)
udelay(reset_delay);
for (i = 0; i < OMAP3_HS_USB_PORTS; i++) {
if (omap->port_data[i].reset)
omap->port_data[i].reset(omap->dev, i, 1);
}
return 0;
err_sys_status:
clk_disable(omap->usbtll_ick);
clk_put(omap->usbtll_ick);
err_tll_ick:
clk_disable(omap->usbtll_fck);
clk_put(omap->usbtll_fck);
err_tll_fck:
clk_disable(omap->usbhost1_48m_fck);
clk_put(omap->usbhost1_48m_fck);
err_host_48m_fck:
clk_disable(omap->usbhost2_120m_fck);
clk_put(omap->usbhost2_120m_fck);
err_host_120m_fck:
clk_disable(omap->usbhost_ick);
clk_put(omap->usbhost_ick);
err_host_ick:
return ret;
}
static int omap_init_uhh_registers(struct ehci_hcd_omap *omap, struct usb_hcd *hcd)
{
unsigned long timeout = jiffies + msecs_to_jiffies(1000);
u8 tll_ch_mask = 0;
unsigned reg = 0;
/* perform TLL soft reset, and wait until reset is complete */
ehci_omap_writel(omap->tll_base, OMAP_USBTLL_SYSCONFIG,
OMAP_USBTLL_SYSCONFIG_SOFTRESET);
/* Wait for TLL reset to complete */
while (!(ehci_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");
return -EINVAL;
}
}
dev_dbg(omap->dev, "TLL RESET DONE\n");
/* Enable smart-idle, wakeup */
reg = OMAP_USBTLL_SYSCONFIG_CACTIVITY
| OMAP_USBTLL_SYSCONFIG_AUTOIDLE
| OMAP_USBTLL_SYSCONFIG_ENAWAKEUP
| OMAP_USBTLL_SYSCONFIG_SMARTIDLE;
ehci_omap_writel(omap->tll_base, OMAP_USBTLL_SYSCONFIG, reg);
/* Put UHH in NoIdle/NoStandby mode */
reg = ehci_omap_readl(omap->uhh_base, OMAP_UHH_SYSCONFIG);
reg |= OMAP_UHH_SYSCONFIG_CACTIVITY
| OMAP_UHH_SYSCONFIG_AUTOIDLE
| OMAP_UHH_SYSCONFIG_ENAWAKEUP;
reg &= ~(OMAP_UHH_SYSCONFIG_SIDLEMASK | OMAP_UHH_SYSCONFIG_MIDLEMASK);
reg |= OMAP_UHH_SYSCONFIG_NOIDLE
| OMAP_UHH_SYSCONFIG_NOSTDBY;
ehci_omap_writel(omap->uhh_base, OMAP_UHH_SYSCONFIG, reg);
reg = ehci_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;
if (omap->port_mode[0] == EHCI_HCD_OMAP_MODE_UNKNOWN)
reg &= ~OMAP_UHH_HOSTCONFIG_P1_CONNECT_STATUS;
if (omap->port_mode[1] == EHCI_HCD_OMAP_MODE_UNKNOWN)
reg &= ~OMAP_UHH_HOSTCONFIG_P2_CONNECT_STATUS;
if (omap->port_mode[2] == EHCI_HCD_OMAP_MODE_UNKNOWN)
reg &= ~OMAP_UHH_HOSTCONFIG_P3_CONNECT_STATUS;
/* Bypass the TLL module for PHY mode operation */
if (!cpu_is_omap3517() && !cpu_is_omap3505() &&
(omap_rev() <= OMAP3430_REV_ES2_1)) {
dev_dbg(omap->dev, "OMAP3 ES version <= ES2.1 \n");
if ((omap->port_mode[0] == EHCI_HCD_OMAP_MODE_PHY) ||
(omap->port_mode[1] == EHCI_HCD_OMAP_MODE_PHY) ||
(omap->port_mode[2] == EHCI_HCD_OMAP_MODE_PHY))
reg &= ~OMAP_UHH_HOSTCONFIG_ULPI_BYPASS;
else
reg |= OMAP_UHH_HOSTCONFIG_ULPI_BYPASS;
} else {
dev_dbg(omap->dev, "OMAP3 ES version > ES2.1\n");
if (omap->port_mode[0] == EHCI_HCD_OMAP_MODE_PHY)
reg &= ~OMAP_UHH_HOSTCONFIG_ULPI_P1_BYPASS;
else if (omap->port_mode[0] == EHCI_HCD_OMAP_MODE_TLL)
reg |= OMAP_UHH_HOSTCONFIG_ULPI_P1_BYPASS;
if (omap->port_mode[1] == EHCI_HCD_OMAP_MODE_PHY)
reg &= ~OMAP_UHH_HOSTCONFIG_ULPI_P2_BYPASS;
else if (omap->port_mode[1] == EHCI_HCD_OMAP_MODE_TLL)
reg |= OMAP_UHH_HOSTCONFIG_ULPI_P2_BYPASS;
if (omap->port_mode[2] == EHCI_HCD_OMAP_MODE_PHY)
reg &= ~OMAP_UHH_HOSTCONFIG_ULPI_P3_BYPASS;
else if (omap->port_mode[2] == EHCI_HCD_OMAP_MODE_TLL)
reg |= OMAP_UHH_HOSTCONFIG_ULPI_P3_BYPASS;
}
ehci_omap_writel(omap->uhh_base, OMAP_UHH_HOSTCONFIG, reg);
dev_dbg(omap->dev, "UHH setup done, uhh_hostconfig=%x\n", reg);
/*
* An undocumented "feature" in the OMAP3 EHCI controller,
* causes suspended ports to be taken out of suspend when
* the USBCMD.Run/Stop bit is cleared (for example when
* we do ehci_bus_suspend).
* This breaks suspend-resume if the root-hub is allowed
* to suspend. Writing 1 to this undocumented register bit
* disables this feature and restores normal behavior.
*/
ehci_omap_writel(omap->ehci_base, EHCI_INSNREG04,
EHCI_INSNREG04_DISABLE_UNSUSPEND);
if ((omap->port_mode[0] == EHCI_HCD_OMAP_MODE_TLL) ||
(omap->port_mode[1] == EHCI_HCD_OMAP_MODE_TLL) ||
(omap->port_mode[2] == EHCI_HCD_OMAP_MODE_TLL)) {
if (omap->port_mode[0] == EHCI_HCD_OMAP_MODE_TLL)
tll_ch_mask |= OMAP_TLL_CHANNEL_1_EN_MASK;
if (omap->port_mode[1] == EHCI_HCD_OMAP_MODE_TLL)
tll_ch_mask |= OMAP_TLL_CHANNEL_2_EN_MASK;
if (omap->port_mode[2] == EHCI_HCD_OMAP_MODE_TLL)
tll_ch_mask |= OMAP_TLL_CHANNEL_3_EN_MASK;
/* Enable UTMI mode for required TLL channels */
omap_usb_utmi_init(omap, tll_ch_mask);
}
if (omap->phy_reset) {
/* Refer ISSUE1:
* Hold the PHY in RESET for enough time till
* PHY is settled and ready
*/
udelay(10);
if (gpio_is_valid(omap->reset_gpio_port[0]))
gpio_set_value(omap->reset_gpio_port[0], 1);
if (gpio_is_valid(omap->reset_gpio_port[1]))
gpio_set_value(omap->reset_gpio_port[1], 1);
}
return 0;
}
/* omap_start_ehc
* - Start the TI USBHOST controller
*/
static int omap_start_ehc(struct ehci_hcd_omap *omap, struct usb_hcd *hcd)
{
unsigned long timeout = jiffies + msecs_to_jiffies(1000);
unsigned reg = 0;
int ret = 0;
int reset_delay;
int i;
dev_dbg(&omap->dev->dev, "starting TI EHCI USB Controller\n");
/* Enable Clocks for USBHOST */
omap->usbhost_ick = clk_get(&omap->dev->dev, "usbhost_ick");
if (IS_ERR(omap->usbhost_ick)) {
ret = PTR_ERR(omap->usbhost_ick);
goto err_host_ick;
}
clk_enable(omap->usbhost_ick);
omap->usbhost2_120m_fck = clk_get(&omap->dev->dev, "usbhost_120m_fck");
if (IS_ERR(omap->usbhost2_120m_fck)) {
ret = PTR_ERR(omap->usbhost2_120m_fck);
goto err_host_120m_fck;
}
clk_enable(omap->usbhost2_120m_fck);
omap->usbhost1_48m_fck = clk_get(&omap->dev->dev, "usbhost_48m_fck");
if (IS_ERR(omap->usbhost1_48m_fck)) {
ret = PTR_ERR(omap->usbhost1_48m_fck);
goto err_host_48m_fck;
}
clk_enable(omap->usbhost1_48m_fck);
reset_delay = 0;
for (i = 0; i < OMAP_TLL_CHANNEL_COUNT; i++) {
reset_delay = reset_delay > omap->port_data[i].reset_delay ?
reset_delay : omap->port_data[i].reset_delay;
if (omap->port_data[i].startup) {
ret = omap->port_data[i].startup(omap->dev, i);
if (ret < 0)
return ret;
}
if (omap->port_data[i].reset)
omap->port_data[i].reset(omap->dev, i, 0);
}
if (reset_delay)
udelay(reset_delay);
/* Configure TLL for 60Mhz clk for ULPI */
omap->usbtll_fck = clk_get(&omap->dev->dev, "usbtll_fck");
if (IS_ERR(omap->usbtll_fck)) {
ret = PTR_ERR(omap->usbtll_fck);
goto err_tll_fck;
}
clk_enable(omap->usbtll_fck);
omap->usbtll_ick = clk_get(&omap->dev->dev, "usbtll_ick");
if (IS_ERR(omap->usbtll_ick)) {
ret = PTR_ERR(omap->usbtll_ick);
goto err_tll_ick;
}
clk_enable(omap->usbtll_ick);
set_bit(HCD_FLAG_HW_ACCESSIBLE, &hcd->flags);
#ifndef CONFIG_MAPPHONE_2NDBOOT
/* perform TLL soft reset, and wait until reset is complete */
ehci_omap_writel(omap->tll_base, OMAP_USBTLL_SYSCONFIG,
OMAP_USBTLL_SYSCONFIG_SOFTRESET);
/* Wait for TLL reset to complete */
while (!(ehci_omap_readl(omap->tll_base, OMAP_USBTLL_SYSSTATUS)
& OMAP_USBTLL_SYSSTATUS_RESETDONE)) {
cpu_relax();
if (time_after(jiffies, timeout)) {
dev_dbg(&omap->dev->dev, "operation timed out\n");
ret = -EINVAL;
goto err_sys_status;
}
}
#endif
dev_dbg(&omap->dev->dev, "TLL RESET DONE\n");
/* SmartIdle mode */
ehci_omap_writel(omap->tll_base, OMAP_USBTLL_SYSCONFIG,
OMAP_USBTLL_SYSCONFIG_ENAWAKEUP |
OMAP_USBTLL_SYSCONFIG_SIDLEMODE |
OMAP_USBTLL_SYSCONFIG_AUTOIDLE);
/* Put UHH in NoIdle/NoStandby mode */
ehci_omap_writel(omap->uhh_base, OMAP_UHH_SYSCONFIG,
OMAP_UHH_SYSCONFIG_ENAWAKEUP |
OMAP_UHH_SYSCONFIG_NOIDLEMODE |
OMAP_UHH_SYSCONFIG_NOSTBYMODE |
OMAP_UHH_SYSCONFIG_AUTOIDLE);
#ifdef CONFIG_MACH_MAPPHONE
/* We need to suspend OHCI in order for the usbhost
* domain to go standby.
* OHCI would never be resumed for UMTS modem */
if (!is_cdma_phone())
omap_writel(OHCI_HC_CTRL_SUSPEND, OHCI_HC_CONTROL);
#endif
reg = ehci_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;
if (!(omap->port_data[0].flags & EHCI_HCD_OMAP_FLAG_ENABLED))
reg &= ~OMAP_UHH_HOSTCONFIG_P1_CONNECT_STATUS;
if (!(omap->port_data[1].flags & EHCI_HCD_OMAP_FLAG_ENABLED))
reg &= ~OMAP_UHH_HOSTCONFIG_P2_CONNECT_STATUS;
if (!(omap->port_data[2].flags & EHCI_HCD_OMAP_FLAG_ENABLED))
reg &= ~OMAP_UHH_HOSTCONFIG_P3_CONNECT_STATUS;
/* Bypass the TLL module for PHY mode operation */
if (omap_rev() <= OMAP3430_REV_ES2_1) {
dev_dbg(&omap->dev->dev, "OMAP3 ES version <= ES2.1 \n");
if (omap_usb_port_ulpi_bypass(omap->port_data[0].mode))
reg |= OMAP_UHH_HOSTCONFIG_ULPI_BYPASS;
else
reg &= ~OMAP_UHH_HOSTCONFIG_ULPI_BYPASS;
} else {
dev_dbg(&omap->dev->dev, "OMAP3 ES version > ES2.1\n");
if (omap_usb_port_ulpi_bypass(omap->port_data[0].mode))
reg |= OMAP_UHH_HOSTCONFIG_ULPI_P1_BYPASS;
else
reg &= ~OMAP_UHH_HOSTCONFIG_ULPI_P1_BYPASS;
if (omap_usb_port_ulpi_bypass(omap->port_data[1].mode))
reg |= OMAP_UHH_HOSTCONFIG_ULPI_P2_BYPASS;
else
reg &= ~OMAP_UHH_HOSTCONFIG_ULPI_P2_BYPASS;
if (omap_usb_port_ulpi_bypass(omap->port_data[2].mode))
reg |= OMAP_UHH_HOSTCONFIG_ULPI_P3_BYPASS;
else
reg &= ~OMAP_UHH_HOSTCONFIG_ULPI_P3_BYPASS;
}
ehci_omap_writel(omap->uhh_base, OMAP_UHH_HOSTCONFIG, reg);
dev_dbg(&omap->dev->dev, "UHH setup done, uhh_hostconfig=%x\n", reg);
/* Enable UTMI mode for required TLL channels */
omap_usb_utmi_init(omap);
reset_delay = 0;
for (i = 0; i < OMAP3_HS_USB_PORTS; i++) {
reset_delay = reset_delay > omap->port_data[i].reset_delay ?
reset_delay : omap->port_data[i].reset_delay;
}
if (reset_delay)
udelay(reset_delay);
for (i = 0; i < OMAP3_HS_USB_PORTS; i++) {
if (omap->port_data[i].reset)
omap->port_data[i].reset(omap->dev, i, 1);
}
#if defined(CONFIG_MACH_MAPPHONE)
/* Refer ISSUE2: LINK assumes external charge pump */
/* use Port1 VBUS to charge externally Port2:
* So for PHY mode operation use Port2 only */
ehci_omap_writel(omap->ehci_base, EHCI_INSNREG05_ULPI,
(0xA << EHCI_INSNREG05_ULPI_REGADD_SHIFT) |/* OTG ctrl reg*/
(2 << EHCI_INSNREG05_ULPI_OPSEL_SHIFT) |/* Write */
(2 << EHCI_INSNREG05_ULPI_PORTSEL_SHIFT) |/* Port1 */
(1 << EHCI_INSNREG05_ULPI_CONTROL_SHIFT) |/* Start */
(0x26));
while (!(ehci_omap_readl(omap->ehci_base, EHCI_INSNREG05_ULPI) &
(1<<EHCI_INSNREG05_ULPI_CONTROL_SHIFT))) {
cpu_relax();
}
#endif
return 0;
err_sys_status:
clk_disable(omap->usbtll_ick);
clk_put(omap->usbtll_ick);
err_tll_ick:
clk_disable(omap->usbtll_fck);
clk_put(omap->usbtll_fck);
err_tll_fck:
clk_disable(omap->usbhost1_48m_fck);
clk_put(omap->usbhost1_48m_fck);
err_host_48m_fck:
clk_disable(omap->usbhost2_120m_fck);
clk_put(omap->usbhost2_120m_fck);
err_host_120m_fck:
clk_disable(omap->usbhost_ick);
clk_put(omap->usbhost_ick);
err_host_ick:
return ret;
}
/* omap_start_ehc
* - Start the TI USBHOST controller
*/
static int omap_start_ehc(struct ehci_hcd_omap *omap, struct usb_hcd *hcd)
{
unsigned long timeout = jiffies + msecs_to_jiffies(1000);
u8 tll_ch_mask = 0;
unsigned reg = 0;
int ret = 0;
dev_dbg(omap->dev, "starting TI EHCI USB Controller\n");
/* Enable Clocks for USBHOST */
omap->usbhost_ick = clk_get(omap->dev, "usbhost_ick");
if (IS_ERR(omap->usbhost_ick)) {
ret = PTR_ERR(omap->usbhost_ick);
goto err_host_ick;
}
clk_enable(omap->usbhost_ick);
omap->usbhost_hs_fck = clk_get(omap->dev, "hs_fck");
if (IS_ERR(omap->usbhost_hs_fck)) {
ret = PTR_ERR(omap->usbhost_hs_fck);
goto err_host_120m_fck;
}
clk_enable(omap->usbhost_hs_fck);
omap->usbhost_fs_fck = clk_get(omap->dev, "fs_fck");
if (IS_ERR(omap->usbhost_fs_fck)) {
ret = PTR_ERR(omap->usbhost_fs_fck);
goto err_host_48m_fck;
}
clk_enable(omap->usbhost_fs_fck);
if (omap->phy_reset) {
/* Refer: ISSUE1 */
if (gpio_is_valid(omap->reset_gpio_port[0])) {
gpio_request(omap->reset_gpio_port[0],
"USB1 PHY reset");
gpio_direction_output(omap->reset_gpio_port[0], 0);
}
if (gpio_is_valid(omap->reset_gpio_port[1])) {
gpio_request(omap->reset_gpio_port[1],
"USB2 PHY reset");
gpio_direction_output(omap->reset_gpio_port[1], 0);
}
/* Hold the PHY in RESET for enough time till DIR is high */
udelay(10);
}
/* Configure TLL for 60Mhz clk for ULPI */
omap->usbtll_fck = clk_get(omap->dev, "usbtll_fck");
if (IS_ERR(omap->usbtll_fck)) {
ret = PTR_ERR(omap->usbtll_fck);
goto err_tll_fck;
}
clk_enable(omap->usbtll_fck);
omap->usbtll_ick = clk_get(omap->dev, "usbtll_ick");
if (IS_ERR(omap->usbtll_ick)) {
ret = PTR_ERR(omap->usbtll_ick);
goto err_tll_ick;
}
clk_enable(omap->usbtll_ick);
omap->omap_ehci_rev = ehci_omap_readl(omap->uhh_base,
OMAP_UHH_REVISION);
dev_dbg(omap->dev, "OMAP UHH_REVISION 0x%x\n",
omap->omap_ehci_rev);
/*
* Enable per-port clocks as needed (newer controllers only).
* - External ULPI clock for PHY mode
* - Internal clocks for TLL and HSIC modes (TODO)
*/
if (is_omap_ehci_rev2(omap)) {
switch (omap->port_mode[0]) {
case EHCI_HCD_OMAP_MODE_PHY:
omap->xclk60mhsp1_ck = clk_get(omap->dev,
"xclk60mhsp1_ck");
if (IS_ERR(omap->xclk60mhsp1_ck)) {
ret = PTR_ERR(omap->xclk60mhsp1_ck);
dev_err(omap->dev,
"Unable to get Port1 ULPI clock\n");
}
omap->utmi_p1_fck = clk_get(omap->dev,
"utmi_p1_gfclk");
if (IS_ERR(omap->utmi_p1_fck)) {
ret = PTR_ERR(omap->utmi_p1_fck);
dev_err(omap->dev,
"Unable to get utmi_p1_fck\n");
}
ret = clk_set_parent(omap->utmi_p1_fck,
omap->xclk60mhsp1_ck);
if (ret != 0) {
dev_err(omap->dev,
"Unable to set P1 f-clock\n");
}
break;
case EHCI_HCD_OMAP_MODE_TLL:
/* TODO */
default:
break;
}
switch (omap->port_mode[1]) {
case EHCI_HCD_OMAP_MODE_PHY:
omap->xclk60mhsp2_ck = clk_get(omap->dev,
"xclk60mhsp2_ck");
if (IS_ERR(omap->xclk60mhsp2_ck)) {
ret = PTR_ERR(omap->xclk60mhsp2_ck);
dev_err(omap->dev,
"Unable to get Port2 ULPI clock\n");
}
omap->utmi_p2_fck = clk_get(omap->dev,
"utmi_p2_gfclk");
if (IS_ERR(omap->utmi_p2_fck)) {
ret = PTR_ERR(omap->utmi_p2_fck);
dev_err(omap->dev,
"Unable to get utmi_p2_fck\n");
}
ret = clk_set_parent(omap->utmi_p2_fck,
omap->xclk60mhsp2_ck);
if (ret != 0) {
dev_err(omap->dev,
"Unable to set P2 f-clock\n");
}
break;
case EHCI_HCD_OMAP_MODE_TLL:
/* TODO */
default:
break;
}
}
/* perform TLL soft reset, and wait until reset is complete */
ehci_omap_writel(omap->tll_base, OMAP_USBTLL_SYSCONFIG,
OMAP_USBTLL_SYSCONFIG_SOFTRESET);
/* Wait for TLL reset to complete */
while (!(ehci_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 */
ehci_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 = ehci_omap_readl(omap->uhh_base, OMAP_UHH_SYSCONFIG);
if (is_omap_ehci_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_ehci_rev2(omap)) {
reg &= ~OMAP4_UHH_SYSCONFIG_IDLEMODE_CLEAR;
reg |= OMAP4_UHH_SYSCONFIG_NOIDLE;
reg &= ~OMAP4_UHH_SYSCONFIG_STDBYMODE_CLEAR;
reg |= OMAP4_UHH_SYSCONFIG_NOSTDBY;
}
ehci_omap_writel(omap->uhh_base, OMAP_UHH_SYSCONFIG, reg);
reg = ehci_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;
if (is_omap_ehci_rev1(omap)) {
if (omap->port_mode[0] == EHCI_HCD_OMAP_MODE_UNKNOWN)
reg &= ~OMAP_UHH_HOSTCONFIG_P1_CONNECT_STATUS;
if (omap->port_mode[1] == EHCI_HCD_OMAP_MODE_UNKNOWN)
reg &= ~OMAP_UHH_HOSTCONFIG_P2_CONNECT_STATUS;
if (omap->port_mode[2] == EHCI_HCD_OMAP_MODE_UNKNOWN)
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(omap->dev, "OMAP3 ES version <= ES2.1\n");
if (is_ehci_phy_mode(omap->port_mode[0]) ||
is_ehci_phy_mode(omap->port_mode[1]) ||
is_ehci_phy_mode(omap->port_mode[2]))
reg &= ~OMAP_UHH_HOSTCONFIG_ULPI_BYPASS;
else
reg |= OMAP_UHH_HOSTCONFIG_ULPI_BYPASS;
} else {
dev_dbg(omap->dev, "OMAP3 ES version > ES2.1\n");
if (is_ehci_phy_mode(omap->port_mode[0]))
reg &= ~OMAP_UHH_HOSTCONFIG_ULPI_P1_BYPASS;
else if (is_ehci_tll_mode(omap->port_mode[0]))
reg |= OMAP_UHH_HOSTCONFIG_ULPI_P1_BYPASS;
if (is_ehci_phy_mode(omap->port_mode[1]))
reg &= ~OMAP_UHH_HOSTCONFIG_ULPI_P2_BYPASS;
else if (is_ehci_tll_mode(omap->port_mode[1]))
reg |= OMAP_UHH_HOSTCONFIG_ULPI_P2_BYPASS;
if (is_ehci_phy_mode(omap->port_mode[2]))
reg &= ~OMAP_UHH_HOSTCONFIG_ULPI_P3_BYPASS;
else if (is_ehci_tll_mode(omap->port_mode[2]))
reg |= OMAP_UHH_HOSTCONFIG_ULPI_P3_BYPASS;
}
} else if (is_omap_ehci_rev2(omap)) {
/* Clear port mode fields for PHY mode*/
reg &= ~OMAP4_P1_MODE_CLEAR;
reg &= ~OMAP4_P2_MODE_CLEAR;
if (is_ehci_tll_mode(omap->port_mode[0]))
reg |= OMAP4_P1_MODE_TLL;
else if (is_ehci_hsic_mode(omap->port_mode[0]))
reg |= OMAP4_P1_MODE_HSIC;
if (is_ehci_tll_mode(omap->port_mode[1]))
reg |= OMAP4_P2_MODE_TLL;
else if (is_ehci_hsic_mode(omap->port_mode[1]))
reg |= OMAP4_P2_MODE_HSIC;
}
ehci_omap_writel(omap->uhh_base, OMAP_UHH_HOSTCONFIG, reg);
dev_dbg(omap->dev, "UHH setup done, uhh_hostconfig=%x\n", reg);
/*
* An undocumented "feature" in the OMAP3 EHCI controller,
* causes suspended ports to be taken out of suspend when
* the USBCMD.Run/Stop bit is cleared (for example when
* we do ehci_bus_suspend).
* This breaks suspend-resume if the root-hub is allowed
* to suspend. Writing 1 to this undocumented register bit
* disables this feature and restores normal behavior.
*/
ehci_omap_writel(omap->ehci_base, EHCI_INSNREG04,
EHCI_INSNREG04_DISABLE_UNSUSPEND);
if ((omap->port_mode[0] == EHCI_HCD_OMAP_MODE_TLL) ||
(omap->port_mode[1] == EHCI_HCD_OMAP_MODE_TLL) ||
(omap->port_mode[2] == EHCI_HCD_OMAP_MODE_TLL)) {
if (omap->port_mode[0] == EHCI_HCD_OMAP_MODE_TLL)
tll_ch_mask |= OMAP_TLL_CHANNEL_1_EN_MASK;
if (omap->port_mode[1] == EHCI_HCD_OMAP_MODE_TLL)
tll_ch_mask |= OMAP_TLL_CHANNEL_2_EN_MASK;
if (omap->port_mode[2] == EHCI_HCD_OMAP_MODE_TLL)
tll_ch_mask |= OMAP_TLL_CHANNEL_3_EN_MASK;
/* Enable UTMI mode for required TLL channels */
omap_usb_utmi_init(omap, tll_ch_mask, OMAP_TLL_CHANNEL_COUNT);
}
if (omap->phy_reset) {
/* Refer ISSUE1:
* Hold the PHY in RESET for enough time till
* PHY is settled and ready
*/
udelay(10);
if (gpio_is_valid(omap->reset_gpio_port[0]))
gpio_set_value(omap->reset_gpio_port[0], 1);
if (gpio_is_valid(omap->reset_gpio_port[1]))
gpio_set_value(omap->reset_gpio_port[1], 1);
}
/* Soft reset the PHY using PHY reset command over ULPI */
if (omap->port_mode[0] == EHCI_HCD_OMAP_MODE_PHY)
omap_ehci_soft_phy_reset(omap, 0);
if (omap->port_mode[1] == EHCI_HCD_OMAP_MODE_PHY)
omap_ehci_soft_phy_reset(omap, 1);
return 0;
err_sys_status:
clk_disable(omap->utmi_p2_fck);
clk_put(omap->utmi_p2_fck);
clk_disable(omap->xclk60mhsp2_ck);
clk_put(omap->xclk60mhsp2_ck);
clk_disable(omap->utmi_p1_fck);
clk_put(omap->utmi_p1_fck);
clk_disable(omap->xclk60mhsp1_ck);
clk_put(omap->xclk60mhsp1_ck);
clk_disable(omap->usbtll_ick);
clk_put(omap->usbtll_ick);
err_tll_ick:
clk_disable(omap->usbtll_fck);
clk_put(omap->usbtll_fck);
err_tll_fck:
clk_disable(omap->usbhost_fs_fck);
clk_put(omap->usbhost_fs_fck);
if (omap->phy_reset) {
if (gpio_is_valid(omap->reset_gpio_port[0]))
gpio_free(omap->reset_gpio_port[0]);
if (gpio_is_valid(omap->reset_gpio_port[1]))
gpio_free(omap->reset_gpio_port[1]);
}
err_host_48m_fck:
clk_disable(omap->usbhost_hs_fck);
clk_put(omap->usbhost_hs_fck);
err_host_120m_fck:
clk_disable(omap->usbhost_ick);
clk_put(omap->usbhost_ick);
err_host_ick:
return ret;
}
/* omap_start_ehc
* - Start the TI USBHOST controller
*/
static int omap_start_ehc(struct platform_device *dev, struct usb_hcd *hcd)
{
u32 uhh_hostconfig_value = 0;
struct ehci_omap_clock_defs *ehci_clocks;
dev_dbg(hcd->self.controller, "starting TI EHCI USB Controller\n");
ehci_clocks = (struct ehci_omap_clock_defs *)(
((char *)hcd_to_ehci(hcd)) +
sizeof(struct ehci_hcd));
/* Start DPLL5 Programming:
* Clock Framework is not doing this now:
* This will be done in clock framework later
*/
/* Enable DPLL 5 : Based on Input of 13Mhz*/
cm_write_mod_reg((12 << OMAP3430ES2_PERIPH2_DPLL_DIV_SHIFT)|
(120 << OMAP3430ES2_PERIPH2_DPLL_MULT_SHIFT),
PLL_MOD, OMAP3430ES2_CM_CLKSEL4);
cm_write_mod_reg(1 << OMAP3430ES2_DIV_120M_SHIFT,
PLL_MOD, OMAP3430ES2_CM_CLKSEL5);
cm_write_mod_reg((7 << OMAP3430ES2_PERIPH2_DPLL_FREQSEL_SHIFT) |
(7 << OMAP3430ES2_EN_PERIPH2_DPLL_SHIFT),
PLL_MOD, OMAP3430ES2_CM_CLKEN2);
#if 0 /* initialization stucks here when EHCI built as module */
while (!(cm_read_mod_reg(PLL_MOD, CM_IDLEST2) &
OMAP3430ES2_ST_PERIPH2_CLK_MASK))
dev_dbg(hcd->self.controller,
"idlest2 = 0x%x\n",
cm_read_mod_reg(PLL_MOD, CM_IDLEST2));
#endif
/* End DPLL5 programming */
/* PRCM settings for USBHOST:
* Interface clk un-related to domain transition
*/
cm_write_mod_reg(0 << OMAP3430ES2_AUTO_USBHOST_SHIFT,
OMAP3430ES2_USBHOST_MOD, CM_AUTOIDLE);
/* Disable sleep dependency with MPU and IVA */
cm_write_mod_reg((0 << OMAP3430ES2_EN_MPU_SHIFT) |
(0 << OMAP3430ES2_EN_IVA2_SHIFT),
OMAP3430ES2_USBHOST_MOD, OMAP3430_CM_SLEEPDEP);
/* Disable Automatic transition of clock */
cm_write_mod_reg(0 << OMAP3430ES2_CLKTRCTRL_USBHOST_SHIFT,
OMAP3430ES2_USBHOST_MOD, CM_CLKSTCTRL);
/* Enable Clocks for USBHOST */
ehci_clocks->usbhost_ick_clk = clk_get(&dev->dev,
USBHOST_ICKL);
if (IS_ERR(ehci_clocks->usbhost_ick_clk))
return PTR_ERR(ehci_clocks->usbhost_ick_clk);
clk_enable(ehci_clocks->usbhost_ick_clk);
ehci_clocks->usbhost2_120m_fck_clk = clk_get(&dev->dev,
USBHOST_120M_FCLK);
if (IS_ERR(ehci_clocks->usbhost2_120m_fck_clk))
return PTR_ERR(ehci_clocks->usbhost2_120m_fck_clk);
clk_enable(ehci_clocks->usbhost2_120m_fck_clk);
ehci_clocks->usbhost1_48m_fck_clk = clk_get(&dev->dev,
USBHOST_48M_FCLK);
if (IS_ERR(ehci_clocks->usbhost1_48m_fck_clk))
return PTR_ERR(ehci_clocks->usbhost1_48m_fck_clk);
clk_enable(ehci_clocks->usbhost1_48m_fck_clk);
/* get phy reset gpio number */
EXT_PHY_RESET_GPIO_PORT2 = omap3_ehci_phy_reset_gpio;
#ifdef EXTERNAL_PHY_RESET
/* Refer: ISSUE1 */
#ifdef CONFIG_OMAP3430SDP_750_2083_001
gpio_request(EXT_PHY_RESET_GPIO_PORT1, "USB1 PHY reset");
gpio_direction_output(EXT_PHY_RESET_GPIO_PORT1, 0);
gpio_set_value(EXT_PHY_RESET_GPIO_PORT1, 0);
#endif
gpio_request(EXT_PHY_RESET_GPIO_PORT2, "USB2 PHY reset");
gpio_direction_output(EXT_PHY_RESET_GPIO_PORT2, 0);
gpio_set_value(EXT_PHY_RESET_GPIO_PORT2, 0);
/* Hold the PHY in RESET for enough time till DIR is high */
udelay(EXT_PHY_RESET_DELAY);
#endif
/* Configure TLL for 60Mhz clk for ULPI */
ehci_clocks->usbtll_fck_clk = clk_get(&dev->dev, USBHOST_TLL_FCLK);
if (IS_ERR(ehci_clocks->usbtll_fck_clk))
return PTR_ERR(ehci_clocks->usbtll_fck_clk);
clk_enable(ehci_clocks->usbtll_fck_clk);
ehci_clocks->usbtll_ick_clk = clk_get(&dev->dev, USBHOST_TLL_ICKL);
if (IS_ERR(ehci_clocks->usbtll_ick_clk))
return PTR_ERR(ehci_clocks->usbtll_ick_clk);
clk_enable(ehci_clocks->usbtll_ick_clk);
/* Disable Auto Idle of USBTLL */
cm_write_mod_reg((0 << OMAP3430ES2_AUTO_USBTLL_SHIFT),
CORE_MOD, CM_AUTOIDLE3);
/* Wait for TLL to be Active */
while ((cm_read_mod_reg(CORE_MOD, OMAP2430_CM_IDLEST3)
& (1 << OMAP3430ES2_ST_USBTLL_SHIFT)))
cpu_relax();
/* perform TLL soft reset, and wait until reset is complete */
omap_writel(1 << OMAP_USBTLL_SYSCONFIG_SOFTRESET_SHIFT,
OMAP_USBTLL_SYSCONFIG);
/* Wait for TLL reset to complete */
while (!(omap_readl(OMAP_USBTLL_SYSSTATUS)
& (1 << OMAP_USBTLL_SYSSTATUS_RESETDONE_SHIFT)))
cpu_relax();
dev_dbg(hcd->self.controller, "TLL RESET DONE\n");
/* (1<<3) = no idle mode only for initial debugging */
omap_writel((1 << OMAP_USBTLL_SYSCONFIG_ENAWAKEUP_SHIFT) |
(1 << OMAP_USBTLL_SYSCONFIG_SIDLEMODE_SHIFT) |
(1 << OMAP_USBTLL_SYSCONFIG_CACTIVITY_SHIFT),
OMAP_USBTLL_SYSCONFIG);
/* Put UHH in NoIdle/NoStandby mode */
omap_writel((0 << OMAP_UHH_SYSCONFIG_AUTOIDLE_SHIFT) |
(1 << OMAP_UHH_SYSCONFIG_ENAWAKEUP_SHIFT) |
(1 << OMAP_UHH_SYSCONFIG_SIDLEMODE_SHIFT) |
(1 << OMAP_UHH_SYSCONFIG_CACTIVITY_SHIFT) |
(1 << OMAP_UHH_SYSCONFIG_MIDLEMODE_SHIFT),
OMAP_UHH_SYSCONFIG);
/* Bypass the TLL module for PHY mode operation */
uhh_hostconfig_value = (1 << OMAP_UHH_HOSTCONFIG_INCR4_BURST_EN_SHIFT) |
(1 << OMAP_UHH_HOSTCONFIG_INCR8_BURST_EN_SHIFT) |
(1 << OMAP_UHH_HOSTCONFIG_INCR16_BURST_EN_SHIFT) |
(0 << OMAP_UHH_HOSTCONFIG_INCRX_ALIGN_EN_SHIFT);
/* For ES 3, we have per-port control for the ULPI Bypass
* The ULPI Bypass needs to be set to 0 only if the EHCI PHY Mode
* is selected for that port.
* ES 2 does not have per-port control. Hence it is not possible to have
* EHCI in PHY Mode and OHCI both working at the same time
*/
if (omap_rev_ge30()) {
#ifndef CONFIG_OMAP_EHCI_PHY_MODE_PORT1
uhh_hostconfig_value |=
(1 << OMAP_UHH_HOSTCONFIG_P1_ULPI_BYPASS_SHIFT);
#endif
#ifndef CONFIG_OMAP_EHCI_PHY_MODE_PORT2
uhh_hostconfig_value |=
(1 << OMAP_UHH_HOSTCONFIG_P2_ULPI_BYPASS_SHIFT);
#endif
#ifndef CONFIG_OMAP_EHCI_PHY_MODE_PORT3
uhh_hostconfig_value |=
(1 << OMAP_UHH_HOSTCONFIG_P3_ULPI_BYPASS_SHIFT);
#endif
} else {
#if defined(CONFIG_OMAP_EHCI_PHY_MODE_PORT1) || \
defined(CONFIG_OMAP_EHCI_PHY_MODE_PORT2) || \
defined(CONFIG_OMAP_EHCI_PHY_MODE_PORT3)
uhh_hostconfig_value |=
(0 << OMAP_UHH_HOSTCONFIG_P1_ULPI_BYPASS_SHIFT);
#else
uhh_hostconfig_value |=
(1 << OMAP_UHH_HOSTCONFIG_P1_ULPI_BYPASS_SHIFT);
#endif
}
omap_writel(uhh_hostconfig_value, OMAP_UHH_HOSTCONFIG);
if (omap_rev_le21()) {
/* Ensure that BYPASS is set */
while (omap_readl(OMAP_UHH_HOSTCONFIG)
& (1 << OMAP_UHH_HOSTCONFIG_ULPI_BYPASS_SHIFT))
cpu_relax();
}
dev_dbg(hcd->self.controller, "Entered ULPI PHY MODE: success\n");
#if defined(CONFIG_OMAP_EHCI_TLL_MODE_PORT1) || \
defined(CONFIG_OMAP_EHCI_TLL_MODE_PORT2) || \
defined(CONFIG_OMAP_EHCI_TLL_MODE_PORT3)
/* Enable UTMI mode for all selected TLL channels */
omap_usb_utmi_init(hcd, 0
#ifdef CONFIG_OMAP_EHCI_TLL_MODE_PORT1
| OMAP_TLL_CHANNEL_1_EN_MASK
#endif
#ifdef CONFIG_OMAP_EHCI_TLL_MODE_PORT2
| OMAP_TLL_CHANNEL_2_EN_MASK
#endif
#ifdef CONFIG_OMAP_EHCI_TLL_MODE_PORT3
| OMAP_TLL_CHANNEL_3_EN_MASK
#endif
);
#endif
#ifdef EXTERNAL_PHY_RESET
/* Refer ISSUE1:
* Hold the PHY in RESET for enough time till PHY is settled and ready
*/
udelay(EXT_PHY_RESET_DELAY);
#ifdef CONFIG_OMAP3430SDP_750_2083_001
gpio_set_value(EXT_PHY_RESET_GPIO_PORT1, 1);
#endif
gpio_set_value(EXT_PHY_RESET_GPIO_PORT2, 1);
#endif
#ifdef VBUS_INTERNAL_CHARGEPUMP_HACK
/* Refer ISSUE2: LINK assumes external charge pump */
/* use Port1 VBUS to charge externally Port2:
* So for PHY mode operation use Port2 only
*/
omap_writel((0xA << EHCI_INSNREG05_ULPI_REGADD_SHIFT) |/* OTG ctrl reg*/
(2 << EHCI_INSNREG05_ULPI_OPSEL_SHIFT) |/* Write */
(1 << EHCI_INSNREG05_ULPI_PORTSEL_SHIFT) |/* Port1 */
(1 << EHCI_INSNREG05_ULPI_CONTROL_SHIFT) |/* Start */
(0x26),
EHCI_INSNREG05_ULPI);
while (!(omap_readl(EHCI_INSNREG05_ULPI)
& (1<<EHCI_INSNREG05_ULPI_CONTROL_SHIFT)))
cpu_relax();
#endif
return 0;
}