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Date: Thu, 4 Oct 2012 00:04:19 +0200
From: const@...eLinux.com
To: nsekhar@...com
Cc: davinci-linux-open-source@...ux.davincidsp.com,
linux-usb@...r.kernel.org, linux-kernel@...r.kernel.org,
linux-arm-kernel@...ts.infradead.org, khilman@...com, balbi@...com,
gregkh@...uxfoundation.org, miguel.aguilar@...gerun.com,
kernel-mentors@...enic.com,
Constantine Shulyupin <const@...eLinux.com>
Subject: [PATCH v3] Enable USB peripheral on dm365 EVM
From: Constantine Shulyupin <const@...eLinux.com>
From: Miguel Aguilar <miguel.aguilar@...gerun.com>
Signed-off-by: Constantine Shulyupin <const@...eLinux.com>
---
Tested with usb gadget g_zero.
This patch is based on code from Arago, Angstom, and RidgeRun projects.
Original patch is three years ago:
http://www.mail-archive.com/davinci-linux-open-source@linux.davincidsp.com/msg14741.html
---
arch/arm/mach-davinci/board-dm365-evm.c | 8 ++++++++
arch/arm/mach-davinci/usb.c | 2 ++
drivers/usb/musb/davinci.h | 1 +
drivers/usb/musb/musb_core.c | 20 ++++++++++++--------
4 files changed, 23 insertions(+), 8 deletions(-)
diff --git a/arch/arm/mach-davinci/board-dm365-evm.c b/arch/arm/mach-davinci/board-dm365-evm.c
index 3a4743b..dfcb67f 100644
--- a/arch/arm/mach-davinci/board-dm365-evm.c
+++ b/arch/arm/mach-davinci/board-dm365-evm.c
@@ -38,6 +38,8 @@
#include <mach/mmc.h>
#include <mach/nand.h>
#include <mach/keyscan.h>
+#include <mach/usb.h>
+#include <mach/hardware.h>
#include <media/tvp514x.h>
@@ -92,6 +94,9 @@ static inline int have_tvp7002(void)
#define CPLD_CCD_DIR3 CPLD_OFFSET(0x3f,0)
#define CPLD_CCD_IO3 CPLD_OFFSET(0x3f,1)
+#define USBPHY_CTL_PADDR 0x01c40034
+#define USBPHY_CLKFREQ_24MHZ BIT(13)
+
static void __iomem *cpld;
@@ -613,6 +618,9 @@ static __init void dm365_evm_init(void)
dm365_init_spi0(BIT(0), dm365_evm_spi_info,
ARRAY_SIZE(dm365_evm_spi_info));
+ writel(readl(IO_ADDRESS(USBPHY_CTL_PADDR)) | USBPHY_CLKFREQ_24MHZ,
+ IO_ADDRESS(USBPHY_CTL_PADDR));
+ davinci_setup_usb(500, 8);
}
MACHINE_START(DAVINCI_DM365_EVM, "DaVinci DM365 EVM")
diff --git a/arch/arm/mach-davinci/usb.c b/arch/arm/mach-davinci/usb.c
index 23d2b6d..664c689 100644
--- a/arch/arm/mach-davinci/usb.c
+++ b/arch/arm/mach-davinci/usb.c
@@ -49,6 +49,8 @@ static struct musb_hdrc_platform_data usb_data = {
.mode = MUSB_PERIPHERAL,
#elif defined(CONFIG_USB_MUSB_HOST)
.mode = MUSB_HOST,
+#else
+ .mode = MUSB_OTG,
#endif
.clock = "usb",
.config = &musb_config,
diff --git a/drivers/usb/musb/davinci.h b/drivers/usb/musb/davinci.h
index 371baa0..e737d97 100644
--- a/drivers/usb/musb/davinci.h
+++ b/drivers/usb/musb/davinci.h
@@ -16,6 +16,7 @@
/* Integrated highspeed/otg PHY */
#define USBPHY_CTL_PADDR 0x01c40034
+#define USBPHY_CLKFREQ_24MHZ BIT(13)
#define USBPHY_DATAPOL BIT(11) /* (dm355) switch D+/D- */
#define USBPHY_PHYCLKGD BIT(8)
#define USBPHY_SESNDEN BIT(7) /* v(sess_end) comparator */
diff --git a/drivers/usb/musb/musb_core.c b/drivers/usb/musb/musb_core.c
index 26f1bef..277fe65 100644
--- a/drivers/usb/musb/musb_core.c
+++ b/drivers/usb/musb/musb_core.c
@@ -2051,9 +2051,17 @@ musb_init_controller(struct device *dev, int nIrq, void __iomem *ctrl)
dev_info(dev, "USB %s mode controller at %p using %s, IRQ %d\n",
({char *s;
switch (musb->board_mode) {
- case MUSB_HOST: s = "Host"; break;
- case MUSB_PERIPHERAL: s = "Peripheral"; break;
- default: s = "OTG"; break;
+ case MUSB_HOST:
+ s = "Host";
+ break;
+ case MUSB_PERIPHERAL:
+ s = "Peripheral";
+ break;
+ case MUSB_OTG:
+ s = "OTG";
+ break;
+ default:
+ s = "Undefined";
}; s; }),
ctrl,
(is_dma_capable() && musb->dma_controller)
@@ -2402,11 +2410,7 @@ static int __init musb_init(void)
if (usb_disabled())
return 0;
- pr_info("%s: version " MUSB_VERSION ", "
- "?dma?"
- ", "
- "otg (peripheral+host)",
- musb_driver_name);
+ pr_info("%s: version %s\n", MUSB_VERSION, musb_driver_name);
return platform_driver_register(&musb_driver);
}
module_init(musb_init);
--
1.7.9.5
--
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