From: Sascha Hauer <s.hauer@pengutronix.de>
To: barebox@lists.infradead.org
Subject: [PATCH 1/2] USB ULPI: Add missing ulpi_write function
Date: Mon, 17 Dec 2012 08:44:15 +0100 [thread overview]
Message-ID: <1355730256-13520-2-git-send-email-s.hauer@pengutronix.de> (raw)
In-Reply-To: <1355730256-13520-1-git-send-email-s.hauer@pengutronix.de>
We currently only have functions to read/modify registers. Add a
function to write registers.
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
---
drivers/usb/otg/ulpi.c | 17 +++++++++++++++++
include/usb/ulpi.h | 1 +
2 files changed, 18 insertions(+)
diff --git a/drivers/usb/otg/ulpi.c b/drivers/usb/otg/ulpi.c
index 61cbada..badb05b 100644
--- a/drivers/usb/otg/ulpi.c
+++ b/drivers/usb/otg/ulpi.c
@@ -111,6 +111,23 @@ int ulpi_clear(u8 bits, int reg, void __iomem *view)
}
EXPORT_SYMBOL(ulpi_clear);
+int ulpi_write(u8 bits, int reg, void __iomem *view)
+{
+ int ret;
+
+ writel((ULPIVW_RUN | ULPIVW_WRITE |
+ (reg << ULPIVW_ADDR_SHIFT) |
+ ((bits & ULPIVW_WDATA_MASK) << ULPIVW_WDATA_SHIFT)),
+ view);
+
+ /* wait for completion */
+ ret = ulpi_poll(view, ULPIVW_RUN);
+ if (ret < 0)
+ return ret;
+ return 0;
+}
+EXPORT_SYMBOL(ulpi_write);
+
struct ulpi_info {
uint32_t id;
char *name;
diff --git a/include/usb/ulpi.h b/include/usb/ulpi.h
index 542993c..7c868a5 100644
--- a/include/usb/ulpi.h
+++ b/include/usb/ulpi.h
@@ -1,6 +1,7 @@
#ifndef __MACH_ULPI_H
#define __MACH_ULPI_H
+int ulpi_write(u8 bits, int reg, void __iomem *view);
int ulpi_set(u8 bits, int reg, void __iomem *view);
int ulpi_clear(u8 bits, int reg, void __iomem *view);
int ulpi_read(int reg, void __iomem *view);
--
1.7.10.4
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next prev parent reply other threads:[~2012-12-17 7:44 UTC|newest]
Thread overview: 3+ messages / expand[flat|nested] mbox.gz Atom feed top
2012-12-17 7:44 [PATCH] USB ULPI updates Sascha Hauer
2012-12-17 7:44 ` Sascha Hauer [this message]
2012-12-17 7:44 ` [PATCH 2/2] USB ULPI: Add more register/bit defines Sascha Hauer
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