[PATCH 7/9] usb: chipidea: udc: add force-full-speed option
From: Michael Grzeschik <hidden>
Date: 2012-11-14 16:19:08
Also in:
linux-arm-kernel
Subsystem:
chipidea usb high speed dual role controller, the rest, usb subsystem · Maintainers:
Peter Chen, Linus Torvalds, Greg Kroah-Hartman
Possibly related (same subject, not in this thread)
- 2012-11-16 · Re: [PATCH 7/9] usb: chipidea: udc: add force-full-speed option · Matthieu CASTET <hidden>
- 2012-11-16 · Re: [PATCH 7/9] usb: chipidea: udc: add force-full-speed option · Alexander Shishkin <hidden>
This patch makes it possible to set the chipidea udc into full-speed only mode. It can be set by the oftree property "force-full-speed". Signed-off-by: Michael Grzeschik <redacted> Signed-off-by: Marc Kleine-Budde <redacted> --- drivers/usb/chipidea/bits.h | 1 + drivers/usb/chipidea/core.c | 5 +++++ include/linux/usb/chipidea.h | 1 + 3 files changed, 7 insertions(+)
diff --git a/drivers/usb/chipidea/bits.h b/drivers/usb/chipidea/bits.h
index 3cded5f..85b6b09 100644
--- a/drivers/usb/chipidea/bits.h
+++ b/drivers/usb/chipidea/bits.h@@ -51,6 +51,7 @@ #define PORTSC_PTS (BIT(31) | BIT(30)) #define PORTSC_PTW BIT(28) #define PORTSC_STS BIT(29) +#define PORTSC_PFSC BIT(24) /* DEVLC */ #define DEVLC_PSPD (0x03UL << 25)
diff --git a/drivers/usb/chipidea/core.c b/drivers/usb/chipidea/core.c
index 7e80f1b..bc99cea 100644
--- a/drivers/usb/chipidea/core.c
+++ b/drivers/usb/chipidea/core.c@@ -230,6 +230,9 @@ void hw_portsc_configure(struct ci13xxx *ci) hw_write(ci, OP_PORTSC, PORTSC_PTS, 0x3 << ffs_nr(PORTSC_PTS)); hw_write(ci, OP_PORTSC, PORTSC_STS, 0x1 << ffs_nr(PORTSC_STS)); } + + if (ci->platdata->flags & CI13XXX_PORTSC_PFSC) + hw_write(ci, OP_PORTSC, PORTSC_PFSC, 0x1 << ffs_nr(PORTSC_PFSC)); } /**
@@ -566,6 +569,8 @@ void ci13xxx_get_dr_flags(struct device_node *of_node, struct ci13xxx_platform_d pr_err("no phy interface defined\n"); } + if (of_find_property(of_node, "force-full-speed", NULL)) + pdata->flags |= CI13XXX_PORTSC_PFSC; } EXPORT_SYMBOL_GPL(ci13xxx_get_dr_flags);
diff --git a/include/linux/usb/chipidea.h b/include/linux/usb/chipidea.h
index cafca23..9ffe105 100644
--- a/include/linux/usb/chipidea.h
+++ b/include/linux/usb/chipidea.h@@ -26,6 +26,7 @@ struct ci13xxx_platform_data { #define CI13XXX_PORTSC_PTS_UTMI BIT(8) #define CI13XXX_PORTSC_PTS_ULPI BIT(9) #define CI13XXX_PORTSC_PTS_FSLS BIT(10) +#define CI13XXX_PORTSC_PFSC BIT(11) #define CI13XXX_DR_MODE_MASK \ (CI13XXX_DR_MODE_HOST | CI13XXX_DR_MODE_PERIPHERAL)
--
1.7.10.4
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