mirror of
git://git.openwrt.org/openwrt/openwrt.git
synced 2025-11-03 22:44:27 -05:00
6999c7e28e
Refreshed all patches. Remove upstreamed: - 0032-usb-host-fotg2-restart-hcd-after-port-reset.patch Compile-tested on: cns3xxx Runtime-tested on: cns3xxx Signed-off-by: Koen Vandeputte <koen.vandeputte@ncentric.com>
100 lines
2.7 KiB
Diff
100 lines
2.7 KiB
Diff
From acd19633751f14607ccd76f9dfde5bde7935766c Mon Sep 17 00:00:00 2001
|
|
From: Linus Walleij <linus.walleij@linaro.org>
|
|
Date: Fri, 21 Apr 2017 20:46:12 +0200
|
|
Subject: [PATCH 29/31] usb: host: fotg2: add silicon clock handling
|
|
|
|
When used in a system with software-controller silicon clocks,
|
|
the FOTG210 needs to grab, prepare and enable the clock.
|
|
This is needed on for example the Cortina Gemini, where the
|
|
platform will by default gate off the clock unless the
|
|
peripheral (in this case the USB driver) grabs and enables
|
|
the clock.
|
|
|
|
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
|
|
---
|
|
drivers/usb/host/fotg210-hcd.c | 26 ++++++++++++++++++++++----
|
|
drivers/usb/host/fotg210.h | 3 +++
|
|
2 files changed, 25 insertions(+), 4 deletions(-)
|
|
|
|
--- a/drivers/usb/host/fotg210-hcd.c
|
|
+++ b/drivers/usb/host/fotg210-hcd.c
|
|
@@ -45,6 +45,7 @@
|
|
#include <linux/uaccess.h>
|
|
#include <linux/platform_device.h>
|
|
#include <linux/io.h>
|
|
+#include <linux/clk.h>
|
|
|
|
#include <asm/byteorder.h>
|
|
#include <asm/irq.h>
|
|
@@ -5639,7 +5640,7 @@ static int fotg210_hcd_probe(struct plat
|
|
hcd->regs = devm_ioremap_resource(&pdev->dev, res);
|
|
if (IS_ERR(hcd->regs)) {
|
|
retval = PTR_ERR(hcd->regs);
|
|
- goto failed;
|
|
+ goto failed_put_hcd;
|
|
}
|
|
|
|
hcd->rsrc_start = res->start;
|
|
@@ -5649,22 +5650,35 @@ static int fotg210_hcd_probe(struct plat
|
|
|
|
fotg210->caps = hcd->regs;
|
|
|
|
+ /* It's OK not to supply this clock */
|
|
+ fotg210->pclk = clk_get(dev, "PCLK");
|
|
+ if (!IS_ERR(fotg210->pclk)) {
|
|
+ retval = clk_prepare_enable(fotg210->pclk);
|
|
+ if (retval) {
|
|
+ dev_err(dev, "failed to enable PCLK\n");
|
|
+ goto failed_dis_clk;
|
|
+ }
|
|
+ }
|
|
+
|
|
retval = fotg210_setup(hcd);
|
|
if (retval)
|
|
- goto failed;
|
|
+ goto failed_dis_clk;
|
|
|
|
fotg210_init(fotg210);
|
|
|
|
retval = usb_add_hcd(hcd, irq, IRQF_SHARED);
|
|
if (retval) {
|
|
dev_err(dev, "failed to add hcd with err %d\n", retval);
|
|
- goto failed;
|
|
+ goto failed_dis_clk;
|
|
}
|
|
device_wakeup_enable(hcd->self.controller);
|
|
|
|
return retval;
|
|
|
|
-failed:
|
|
+failed_dis_clk:
|
|
+ if (!IS_ERR(fotg210->pclk))
|
|
+ clk_disable_unprepare(fotg210->pclk);
|
|
+failed_put_hcd:
|
|
usb_put_hcd(hcd);
|
|
fail_create_hcd:
|
|
dev_err(dev, "init %s fail, %d\n", dev_name(dev), retval);
|
|
@@ -5680,6 +5694,10 @@ static int fotg210_hcd_remove(struct pla
|
|
{
|
|
struct device *dev = &pdev->dev;
|
|
struct usb_hcd *hcd = dev_get_drvdata(dev);
|
|
+ struct fotg210_hcd *fotg210 = hcd_to_fotg210(hcd);
|
|
+
|
|
+ if (!IS_ERR(fotg210->pclk))
|
|
+ clk_disable_unprepare(fotg210->pclk);
|
|
|
|
if (!hcd)
|
|
return 0;
|
|
--- a/drivers/usb/host/fotg210.h
|
|
+++ b/drivers/usb/host/fotg210.h
|
|
@@ -182,6 +182,9 @@ struct fotg210_hcd { /* one per contro
|
|
# define COUNT(x)
|
|
#endif
|
|
|
|
+ /* silicon clock */
|
|
+ struct clk *pclk;
|
|
+
|
|
/* debug files */
|
|
struct dentry *debug_dir;
|
|
};
|