All ports have similarly named port clocks so we can
bunch them into a port data structure and use for loop
to enable/disable the clocks.
Signed-off-by: Roger Quadros <rogerq@xxxxxx>
---
drivers/mfd/omap-usb-host.c | 208 +++++++++++++++++++++----------------------
1 files changed, 101 insertions(+), 107 deletions(-)
diff --git a/drivers/mfd/omap-usb-host.c b/drivers/mfd/omap-usb-host.c
index 23cec57..7303c41 100644
--- a/drivers/mfd/omap-usb-host.c
+++ b/drivers/mfd/omap-usb-host.c
@@ -76,6 +76,8 @@
#define OMAP_UHH_DEBUG_CSR (0x44)
+#define MAX_HS_USB_PORTS 3 /* Increase this if any chip has more */
+
/* Values of UHH_REVISION - Note: these are not given in the TRM */
#define OMAP_USBHS_REV1 0x00000010 /* OMAP3 */
#define OMAP_USBHS_REV2 0x50700100 /* OMAP4 */
@@ -87,14 +89,15 @@
#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_port {
+ struct clk *utmi_clk;
+};
struct usbhs_hcd_omap {
+ struct usbhs_port port[MAX_HS_USB_PORTS];
+
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;
@@ -278,6 +281,7 @@ 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;
+ int i, r;
dev_dbg(dev, "usbhs_runtime_resume\n");
@@ -292,13 +296,18 @@ static int usbhs_runtime_resume(struct device *dev)
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);
+ for (i = 0; i < MAX_HS_USB_PORTS; i++) {
+ if (is_ehci_tll_mode(pdata->port_mode[i])) {
+ if (omap->port[i].utmi_clk) {
+ r = clk_enable(omap->port[i].utmi_clk);
+ if (r) {
+ dev_err(dev,
+ "%s: Can't enable port %d clk : %d\n",
+ __func__, i, r);
+ }
+ }
+ }
+ }
spin_unlock_irqrestore(&omap->lock, flags);
@@ -310,6 +319,7 @@ 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;
+ int i;
dev_dbg(dev, "usbhs_runtime_suspend\n");
@@ -320,13 +330,12 @@ static int usbhs_runtime_suspend(struct device *dev)
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);
+ for (i = 0; i < MAX_HS_USB_PORTS; i++) {
+ if (is_ehci_tll_mode(pdata->port_mode[i])) {
+ if (omap->port[i].utmi_clk)
+ clk_disable(omap->port[i].utmi_clk);
+ }
+ }
if (omap->ehci_logic_fck && !IS_ERR(omap->ehci_logic_fck))
clk_disable(omap->ehci_logic_fck);
@@ -472,101 +481,105 @@ static int __devinit 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;
+ }
+
+ res = platform_get_resource_byname(pdev, IORESOURCE_MEM, "uhh");
+ if (!res) {
+ dev_err(dev, "UHH EHCI get resource failed\n");
+ return -ENODEV;
}
omap = kzalloc(sizeof(*omap), GFP_KERNEL);
if (!omap) {
dev_err(dev, "Memory allocation failed\n");
+ return -ENOMEM;
+ }
+
+ omap->uhh_base = ioremap(res->start, resource_size(res));
+ if (!omap->uhh_base) {
+ dev_err(dev, "UHH ioremap failed\n");
ret = -ENOMEM;
- goto end_probe;
+ goto err_remap;
}
spin_lock_init(&omap->lock);
- for (i = 0; i < OMAP3_HS_USB_PORTS; i++)
+ need_logic_fck = false;
+ for (i = 0; i < MAX_HS_USB_PORTS; i++) {
omap->platdata.port_mode[i] = pdata->port_mode[i];
+ if (is_ehci_phy_mode(i) || is_ehci_tll_mode(i) ||
+ is_ehci_hsic_mode(i))
+ need_logic_fck |= true;
+ }
+
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;
+ 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_warn(dev, "ehci_logic_fck failed:%d\n", ret);
}
-
- 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;
+ 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 < MAX_HS_USB_PORTS; i++) {
+ struct clk *pclk;
+ char utmi_clk[] = "usb_host_hs_utmi_px_clk";
+
+ /* clock names are indexed from 1*/
+ sprintf(utmi_clk, "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
+ */
+ pclk = clk_get(dev, utmi_clk);
+ if (IS_ERR(pclk))
+ dev_err(dev, "Failed to get clock : %s : %ld\n",
+ utmi_clk, PTR_ERR(pclk));
+ else
+ omap->port[i].utmi_clk = pclk;
+
}
if (is_ehci_phy_mode(pdata->port_mode[0])) {
/* for OMAP3 , the clk set paretn fails */
- ret = clk_set_parent(omap->utmi_p1_fck,
+ ret = clk_set_parent(omap->port[0].utmi_clk,
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,
+ ret = clk_set_parent(omap->port[0].utmi_clk,
omap->init_60m_fclk);
if (ret != 0)
dev_err(dev, "init_60m_fclk set parent"
@@ -574,35 +587,23 @@ static int __devinit usbhs_omap_probe(struct platform_device *pdev)
}
if (is_ehci_phy_mode(pdata->port_mode[1])) {
- ret = clk_set_parent(omap->utmi_p2_fck,
+ ret = clk_set_parent(omap->port[1].utmi_clk,
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,
+ ret = clk_set_parent(omap->port[1].utmi_clk,
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);
+ pm_runtime_enable(dev);
+
omap_usbhs_init(dev);
ret = omap_usbhs_alloc_children(pdev);
if (ret) {
@@ -610,39 +611,30 @@ static int __devinit 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:
- clk_put(omap->init_60m_fclk);
+ pm_runtime_disable(dev);
+ iounmap(omap->uhh_base);
-err_usbhost_p2_fck:
- clk_put(omap->usbhost_p2_fck);
+ for (i = 0; i < MAX_HS_USB_PORTS; i++)
+ clk_put(omap->port[i].utmi_clk);
-err_usbhost_p1_fck:
- clk_put(omap->usbhost_p1_fck);
+ clk_put(omap->init_60m_fclk);
-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_end:
+err_xclk60mhsp1:
clk_put(omap->ehci_logic_fck);
- pm_runtime_disable(dev);
- kfree(omap);
-end_probe:
+err_remap:
+ kfree(omap);
return ret;
}
@@ -655,18 +647,20 @@ end_probe:
static int __devexit usbhs_omap_remove(struct platform_device *pdev)
{
struct usbhs_hcd_omap *omap = platform_get_drvdata(pdev);
+ int i;
omap_usbhs_deinit(&pdev->dev);
+ pm_runtime_disable(&pdev->dev);
iounmap(omap->uhh_base);
+
+ for (i = 0; i < MAX_HS_USB_PORTS; i++)
+ clk_put(omap->port[i].utmi_clk);
+
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;
--
1.7.4.1
--
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