[PATCH 35/41] usb: host: ohci-omap: Make it CCF clk API compatible

Arnd Bergmann
2022-04-19T13:53:30Z

From: Janusz Krzysztofik <jmkrzyszt@gmail.com>

The driver, OMAP1 specific, now omits clk_prepare/unprepare() steps, not
supported by OMAP1 custom implementation of clock API. However, non-CCF
stubs of those functions exist for use on such platforms until converted
to CCF.

Update the driver to be compatible with CCF implementation of clock API.

Signed-off-by: Janusz Krzysztofik <jmkrzyszt@gmail.com>
Acked-by: Alan Stern <stern@rowland.harvard.edu>
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
---
drivers/usb/host/ohci-omap.c | 18 ++++++++++++++++--
1 file changed, 16 insertions(+), 2 deletions(-)

diff --git a/drivers/usb/host/ohci-omap.c b/drivers/usb/host/ohci-omap.c
index 069791d25abb..f5bc9c8bdc9a 100644
--- a/drivers/usb/host/ohci-omap.c
+++ b/drivers/usb/host/ohci-omap.c
@@ -259,6 +259,10 @@ static int ohci_hcd_omap_probe(struct platform_device *pdev)
goto err_put_hcd;
}

+ retval = clk_prepare(priv->usb_host_ck);
+ if (retval)
+ goto err_put_host_ck;
+
if (!cpu_is_omap15xx())
priv->usb_dc_ck = clk_get(&pdev->dev, "usb_dc_ck");
else
@@ -266,13 +270,17 @@ static int ohci_hcd_omap_probe(struct platform_device *pdev)

if (IS_ERR(priv->usb_dc_ck)) {
retval = PTR_ERR(priv->usb_dc_ck);
- goto err_put_host_ck;
+ goto err_unprepare_host_ck;
}

+ retval = clk_prepare(priv->usb_dc_ck);
+ if (retval)
+ goto err_put_dc_ck;
+
if (!request_mem_region(hcd->rsrc_start, hcd->rsrc_len, hcd_name)) {
dev_dbg(&pdev->dev, "request_mem_region failed\n");
retval = -EBUSY;
- goto err_put_dc_ck;
+ goto err_unprepare_dc_ck;
}

hcd->regs = ioremap(hcd->rsrc_start, hcd->rsrc_len);
@@ -297,8 +305,12 @@ static int ohci_hcd_omap_probe(struct platform_device *pdev)
iounmap(hcd->regs);
err2:
release_mem_region(hcd->rsrc_start, hcd->rsrc_len);
+err_unprepare_dc_ck:
+ clk_unprepare(priv->usb_dc_ck);
err_put_dc_ck:
clk_put(priv->usb_dc_ck);
+err_unprepare_host_ck:
+ clk_unprepare(priv->usb_host_ck);
err_put_host_ck:
clk_put(priv->usb_host_ck);
err_put_hcd:
@@ -333,7 +345,9 @@ static int ohci_hcd_omap_remove(struct platform_device *pdev)
}
iounmap(hcd->regs);
release_mem_region(hcd->rsrc_start, hcd->rsrc_len);
+ clk_unprepare(priv->usb_dc_ck);
clk_put(priv->usb_dc_ck);
+ clk_unprepare(priv->usb_host_ck);
clk_put(priv->usb_host_ck);
usb_put_hcd(hcd);
return 0;
--
2.29.2