Signed-off-by: Igor Grinberg <grinberg@xxxxxxxxxxxxxx>
Signed-off-by: Mike Rapoport <mike@xxxxxxxxxxxxxx>
---
arch/arm/mach-pxa/Kconfig | 4 +
arch/arm/mach-pxa/Makefile | 1 +
arch/arm/mach-pxa/include/mach/pxa310-ulpi.h | 19 +++++
arch/arm/mach-pxa/pxa310-ulpi.c | 110 ++++++++++++++++++++++++++
4 files changed, 134 insertions(+), 0 deletions(-)
create mode 100644 arch/arm/mach-pxa/include/mach/pxa310-ulpi.h
create mode 100644 arch/arm/mach-pxa/pxa310-ulpi.c
diff --git a/arch/arm/mach-pxa/Kconfig b/arch/arm/mach-pxa/Kconfig
index 5b6ee46..3c54cf0 100644
--- a/arch/arm/mach-pxa/Kconfig
+++ b/arch/arm/mach-pxa/Kconfig
@@ -616,6 +616,7 @@ config CPU_PXA300
config CPU_PXA310
bool
select CPU_PXA300
+ select PXA310_ULPI if USB_ULPI
help
PXA310 (codename Monahans-LV)
@@ -681,4 +682,7 @@ config PXA_HAVE_BOARD_IRQS
config PXA_HAVE_ISA_IRQS
bool
+config PXA310_ULPI
+ bool
+
endif
diff --git a/arch/arm/mach-pxa/Makefile b/arch/arm/mach-pxa/Makefile
index 86bc87b..4ab51dd 100644
--- a/arch/arm/mach-pxa/Makefile
+++ b/arch/arm/mach-pxa/Makefile
@@ -21,6 +21,7 @@ obj-$(CONFIG_PXA25x) += mfp-pxa2xx.o pxa2xx.o pxa25x.o
obj-$(CONFIG_PXA27x) += mfp-pxa2xx.o pxa2xx.o pxa27x.o
obj-$(CONFIG_PXA3xx) += mfp-pxa3xx.o pxa3xx.o smemc.o
obj-$(CONFIG_CPU_PXA300) += pxa300.o
+obj-$(CONFIG_PXA310_ULPI) += pxa310-ulpi.o
obj-$(CONFIG_CPU_PXA320) += pxa320.o
obj-$(CONFIG_CPU_PXA930) += pxa930.o
diff --git a/arch/arm/mach-pxa/include/mach/pxa310-ulpi.h b/arch/arm/mach-pxa/include/mach/pxa310-ulpi.h
new file mode 100644
index 0000000..b0f2062
--- /dev/null
+++ b/arch/arm/mach-pxa/include/mach/pxa310-ulpi.h
@@ -0,0 +1,19 @@
+/*
+ * PXA310 ULPI USB host header file.
+ *
+ * Copyright (C) 2010 CompuLab Ltd.
+ *
+ * Igor Grinberg <grinberg@xxxxxxxxxxxxxx>
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License version 2 as
+ * published by the Free Software Foundation.
+ */
+#ifndef __PXA310_ULPI__
+#define __PXA310_ULPI__
+
+#include <linux/usb/ulpi.h>
+
+extern struct otg_io_access_ops pxa310_ulpi_access_ops;
+
+#endif /* __PXA310_ULPI__ */
diff --git a/arch/arm/mach-pxa/pxa310-ulpi.c b/arch/arm/mach-pxa/pxa310-ulpi.c
new file mode 100644
index 0000000..14b6a2e
--- /dev/null
+++ b/arch/arm/mach-pxa/pxa310-ulpi.c
@@ -0,0 +1,110 @@
+/*
+ * linux/arch/arm/mach-pxa/pxa310-ulpi.c
+ *
+ * PXA310 ULPI implementation.
+ *
+ * Copyright (C) 2010 CompuLab Ltd.
+ *
+ * Igor Grinberg <grinberg@xxxxxxxxxxxxxx>
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License version 2 as
+ * published by the Free Software Foundation.
+ */
+
+#include <linux/module.h>
+#include <linux/kernel.h>
+#include <linux/err.h>
+#include <linux/io.h>
+#include <linux/delay.h>
+#include <linux/clk.h>
+#include <linux/usb/otg.h>
+
+#include <mach/regs-u2d.h>
+#include <mach/pxa310-ulpi.h>
+
+#define U2DOTGUCR_ADDR_S (16)
+#define U2DOTGUCR_WDATA_S (8)
+
+enum u2d_phy_mode {
+ SYNCH = 0,
+ CARKIT = (1 << 0),
+ SER_3PIN = (1 << 1),
+ SER_6PIN = (1 << 2),
+ LOWPOWER = (1 << 3),
+};
+
+static inline u32 u2d_readl(struct otg_transceiver *otg, u32 off)
+{
+ void __iomem *u2d_mmio_base = otg->io_priv;
+
+ return __raw_readl(u2d_mmio_base + off);
+}
+
+static inline void u2d_writel(struct otg_transceiver *otg, u32 off, u32 val)
+{
+ void __iomem *u2d_mmio_base = otg->io_priv;
+
+ __raw_writel(val, u2d_mmio_base + off);
+}
+
+static inline enum u2d_phy_mode ulpi_get_phymode(struct otg_transceiver *otg)
+{
+ return (u2d_readl(otg, U2DOTGUSR) & 0xF0000000) >> 28;
+}
+
+static int ulpi_poll(struct otg_transceiver *otg)
+{
+ int timeout = 50000;
+
+ while (timeout--) {
+ if (!(u2d_readl(otg, U2DOTGUCR) & U2DOTGUCR_RUN))
+ return 0;
+
+ cpu_relax();
+ }
+
+ pr_warning("%s: ULPI access timed out!\n", __func__);
+
+ return -ETIMEDOUT;
+}
+
+static int ulpi_read(struct otg_transceiver *otg, u32 reg)
+{
+ int err;
+
+ if (ulpi_get_phymode(otg)) {
+ pr_warning("%s: PHY is not in SYNCH mode!\n", __func__);
+ return -EBUSY;
+ }
+
+ u2d_writel(otg, U2DOTGUCR,
+ U2DOTGUCR_RUN | U2DOTGUCR_RNW | (reg << U2DOTGUCR_ADDR_S));
+ msleep(5);
+
+ err = ulpi_poll(otg);
+ if (err)
+ return err;
+
+ return u2d_readl(otg, U2DOTGUCR) & U2DOTGUCR_RDATA;
+}
+
+static int ulpi_write(struct otg_transceiver *otg, u32 val, u32 reg)
+{
+ if (ulpi_get_phymode(otg)) {
+ pr_warning("%s: PHY is not in SYNCH mode!\n", __func__);
+ return -EBUSY;
+ }
+
+ u2d_writel(otg, U2DOTGUCR, U2DOTGUCR_RUN | (reg << U2DOTGUCR_ADDR_S) |
+ (val << U2DOTGUCR_WDATA_S));
+ msleep(5);
+
+ return ulpi_poll(otg);
+}
+
+struct otg_io_access_ops pxa310_ulpi_access_ops = {
+ .read = ulpi_read,
+ .write = ulpi_write,
+};
+EXPORT_SYMBOL_GPL(pxa310_ulpi_access_ops);
--
1.6.4.4
--
To unsubscribe from this list: send the line "unsubscribe linux-usb" in
the body of a message to majordomo@xxxxxxxxxxxxxxx
More majordomo info at http://vger.kernel.org/majordomo-info.html
