From: Roger Quadros <rogerq@ti.com>
To: <sameo@linux.intel.com>, <balbi@ti.com>, <tony@atomide.com>,
<linux@arm.linux.org.uk>
Cc: <kishon@ti.com>, <sshtylyov@mvista.com>, <bjorn@mork.no>,
<linux-usb@vger.kernel.org>, <linux-kernel@vger.kernel.org>,
<linux-arm-kernel@lists.infradead.org>, <rogerq@ti.com>
Subject: [PATCH v9 15/22] mfd: omap-usb-host: cleanup clock management code
Date: Mon, 21 Jan 2013 13:10:29 +0200 [thread overview]
Message-ID: <1358766629-5656-1-git-send-email-rogerq@ti.com> (raw)
In-Reply-To: <1358511445-26656-16-git-send-email-rogerq@ti.com>
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.
Dynamically allocate and get clocks based on number of ports
available on the platform
Signed-off-by: Roger Quadros <rogerq@ti.com>
Reviewed-by: Felipe Balbi <balbi@ti.com>
---
drivers/mfd/omap-usb-host.c | 186 ++++++++++++++++++++++++------------------
1 files changed, 106 insertions(+), 80 deletions(-)
diff --git a/drivers/mfd/omap-usb-host.c b/drivers/mfd/omap-usb-host.c
index 779588b..9fa0215 100644
--- a/drivers/mfd/omap-usb-host.c
+++ b/drivers/mfd/omap-usb-host.c
@@ -92,13 +92,12 @@
struct usbhs_hcd_omap {
int nports;
+ struct clk **utmi_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;
@@ -276,22 +275,25 @@ static int usbhs_runtime_resume(struct device *dev)
struct usbhs_hcd_omap *omap = dev_get_drvdata(dev);
struct usbhs_omap_platform_data *pdata = omap->pdata;
unsigned long flags;
+ int i, r;
dev_dbg(dev, "usbhs_runtime_resume\n");
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++) {
+ if (!is_ehci_tll_mode(pdata->port_mode[i]) ||
+ IS_ERR(omap->utmi_clk[i]))
+ continue;
- clk_enable(omap->utmi_p1_fck);
- clk_enable(omap->utmi_p2_fck);
+ r = clk_enable(omap->utmi_clk[i]);
+ if (r)
+ dev_err(dev, "Can't enable port %d clk : %d\n", i, r);
+ }
spin_unlock_irqrestore(&omap->lock, flags);
@@ -303,20 +305,19 @@ static int usbhs_runtime_suspend(struct device *dev)
struct usbhs_hcd_omap *omap = dev_get_drvdata(dev);
struct usbhs_omap_platform_data *pdata = omap->pdata;
unsigned long flags;
+ int i;
dev_dbg(dev, "usbhs_runtime_suspend\n");
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 < omap->nports; i++) {
+ if (is_ehci_tll_mode(pdata->port_mode[i]) &&
+ !IS_ERR(omap->utmi_clk[i]))
+ clk_disable(omap->utmi_clk[i]);
+ }
- 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);
@@ -458,6 +459,7 @@ 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");
@@ -516,76 +518,91 @@ static int usbhs_omap_probe(struct platform_device *pdev)
}
}
- for (i = 0; i < omap->nports; i++)
+ i = sizeof(struct clk *) * omap->nports;
+ omap->utmi_clk = devm_kzalloc(dev, i, GFP_KERNEL);
+ if (!omap->utmi_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)) {
- 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;
+ 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_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->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[] = "usb_host_hs_utmi_px_clk";
+
+ /* 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]));
}
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->utmi_p1_gfclk,
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->utmi_p1_gfclk,
omap->init_60m_fclk);
if (ret != 0)
dev_err(dev, "init_60m_fclk set parent"
@@ -593,13 +610,13 @@ static int 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->utmi_p2_gfclk,
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->utmi_p2_gfclk,
omap->init_60m_fclk);
if (ret != 0)
dev_err(dev, "init_60m_fclk set parent"
@@ -617,28 +634,30 @@ static int usbhs_omap_probe(struct platform_device *pdev)
err_alloc:
omap_usbhs_deinit(&pdev->dev);
- clk_put(omap->init_60m_fclk);
-err_usbhost_p2_fck:
- clk_put(omap->usbhost_p2_fck);
+ for (i = 0; i < omap->nports; i++)
+ if (!IS_ERR(omap->utmi_clk[i]))
+ clk_put(omap->utmi_clk[i]);
-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_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);
return ret;
@@ -653,16 +672,23 @@ err_end:
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);
+
+ for (i = 0; i < omap->nports; i++)
+ if (!IS_ERR(omap->utmi_clk[i]))
+ clk_put(omap->utmi_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);
return 0;
--
1.7.4.1
next prev parent reply other threads:[~2013-01-21 11:10 UTC|newest]
Thread overview: 40+ messages / expand[flat|nested] mbox.gz Atom feed top
2013-01-18 12:17 [PATCH v8 00/22] OMAP USB Host cleanup Roger Quadros
2013-01-18 12:17 ` [PATCH v8 01/22] USB: ehci-omap: Don't free gpios that we didn't request Roger Quadros
2013-01-18 12:36 ` Roger Quadros
2013-01-18 12:17 ` [PATCH v8 02/22] mfd: omap-usb-host: Consolidate OMAP USB-HS platform data Roger Quadros
2013-01-18 12:17 ` [PATCH v8 03/22] mfd: omap-usb-tll: Fix channel count detection Roger Quadros
2013-01-18 12:17 ` [PATCH v8 04/22] mfd: omap-usb-tll: Use devm_kzalloc/ioremap and clean up error path Roger Quadros
2013-01-18 12:17 ` [PATCH v8 05/22] mfd: omap-usb-tll: Clean up clock handling Roger Quadros
2013-01-18 14:59 ` Russell King - ARM Linux
2013-01-18 15:04 ` Roger Quadros
2013-01-21 11:04 ` [PATCH v9 " Roger Quadros
2013-01-21 16:01 ` Russell King - ARM Linux
2013-01-18 12:17 ` [PATCH v8 06/22] mfd: omap-usb-tll: introduce and use mode_needs_tll() Roger Quadros
2013-01-18 15:02 ` Russell King - ARM Linux
2013-01-18 15:08 ` Roger Quadros
2013-01-21 11:06 ` [PATCH v9 " Roger Quadros
2013-01-18 12:17 ` [PATCH v8 07/22] mfd: omap-usb-tll: Check for missing platform data in probe Roger Quadros
2013-01-18 12:17 ` [PATCH v8 08/22] mfd: omap-usb-tll: Fix error message Roger Quadros
2013-01-18 12:17 ` [PATCH v8 09/22] mfd: omap-usb-tll: serialize access to TLL device Roger Quadros
2013-01-18 12:17 ` [PATCH v8 10/22] mfd: omap-usb-tll: Add OMAP5 revision and HSIC support Roger Quadros
2013-01-18 12:17 ` [PATCH v8 11/22] mfd: omap_usb_host: Avoid missing platform data checks in suspend/resume Roger Quadros
2013-01-18 12:17 ` [PATCH v8 12/22] mfd: omap-usb-host: Use devm_kzalloc() and devm_request_and_ioremap() Roger Quadros
2013-01-18 12:17 ` [PATCH v8 13/22] mfd: omap-usb-host: know about number of ports from revision register Roger Quadros
2013-01-18 12:17 ` [PATCH v8 14/22] mfd: omap-usb-host: override number of ports from platform data Roger Quadros
2013-01-18 12:17 ` [PATCH v8 15/22] mfd: omap-usb-host: cleanup clock management code Roger Quadros
2013-01-21 11:10 ` Roger Quadros [this message]
2013-01-18 12:17 ` [PATCH v8 16/22] mfd: omap-usb-host: Manage HSIC clocks for HSIC mode Roger Quadros
2013-01-18 12:17 ` [PATCH v8 17/22] mfd: omap-usb-host: Get rid of unnecessary spinlock Roger Quadros
2013-01-21 11:11 ` [PATCH v9 16/22] mfd: omap-usb-host: Manage HSIC clocks for HSIC mode Roger Quadros
2013-01-18 12:17 ` [PATCH v8 18/22] mfd: omap-usb-host: clean up omap_usbhs_init() Roger Quadros
2013-01-18 12:17 ` [PATCH v8 19/22] ARM: OMAP3: clock data: get rid of unused USB host clock aliases and dummies Roger Quadros
2013-01-18 20:27 ` Paul Walmsley
2013-01-21 9:35 ` Roger Quadros
2013-01-21 15:03 ` Paul Walmsley
2013-01-22 9:28 ` Roger Quadros
2013-02-05 11:22 ` Roger Quadros
2013-02-11 19:49 ` Paul Walmsley
2013-06-09 7:15 ` Paul Walmsley
2013-01-18 12:17 ` [PATCH v8 20/22] ARM: OMAP4: clock data: get rid of unused USB host clock aliases Roger Quadros
2013-01-18 12:17 ` [PATCH v8 21/22] mfd: omap-usb-host: Don't spam console on clk_set_parent failure Roger Quadros
2013-01-18 12:17 ` [PATCH v8 22/22] mdf: omap-usb-host: get rid of build warning Roger Quadros
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