linux-kernel - [PATCH 18/25] MIPS: Octeon: use OHCI platform driver

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Date:	Wed,  3 Oct 2012 17:03:14 +0200
From:	Florian Fainelli <florian@...nwrt.org>
To:	stern@...land.harvard.edu
Cc:	linux-usb@...r.kernel.org, Florian Fainelli <florian@...nwrt.org>,
	Ralf Baechle <ralf@...ux-mips.org>,
	David Daney <david.daney@...ium.com>,
	"David S. Miller" <davem@...emloft.net>,
	Wolfram Sang <w.sang@...gutronix.de>,
	linux-mips@...ux-mips.org, linux-kernel@...r.kernel.org
Subject: [PATCH 18/25] MIPS: Octeon: use OHCI platform driver

Signed-off-by: Florian Fainelli <florian@...nwrt.org>
---
 arch/mips/cavium-octeon/octeon-platform.c |   37 ++++++++++++++++++++++++++++-
 1 file changed, 36 insertions(+), 1 deletion(-)

diff --git a/arch/mips/cavium-octeon/octeon-platform.c b/arch/mips/cavium-octeon/octeon-platform.c
index 539e1bc..07b0a3b 100644
--- a/arch/mips/cavium-octeon/octeon-platform.c
+++ b/arch/mips/cavium-octeon/octeon-platform.c
@@ -19,6 +19,7 @@
 #include <linux/of_fdt.h>
 #include <linux/libfdt.h>
 #include <linux/usb/ehci_pdriver.h>
+#include <linux/usb/ohci_pdriver.h>
 
 #include <asm/octeon/octeon.h>
 #include <asm/octeon/cvmx-rnm-defs.h>
@@ -260,6 +261,36 @@ out:
 }
 device_initcall(octeon_ehci_device_init);
 
+static int octeon_ohci_power_on(struct platform_device *pdev)
+{
+	union cvmx_uctlx_ohci_ctl ohci_ctl;
+
+	octeon2_usb_clocks_start();
+
+	ohci_ctl.u64 = cvmx_read_csr(CVMX_UCTLX_OHCI_CTL(0));
+	ohci_ctl.s.l2c_addr_msb = 0;
+	ohci_ctl.s.l2c_buff_emod = 1; /* Byte swapped. */
+	ohci_ctl.s.l2c_desc_emod = 1; /* Byte swapped. */
+	cvmx_write_csr(CVMX_UCTLX_OHCI_CTL(0), ohci_ctl.u64);
+
+	return 0;
+}
+
+static octeon_ohci_power_off(struct platform_device *pdev)
+{
+	octeon2_usb_clocks_stop();
+}
+
+static struct usb_ohci_pdata octeon_ohci_pdata = {
+#ifdef __BIG_ENDIAN
+	.big_endian_mmio = 1,
+#endif
+	.power_on	= octeon_ohci_power_on,
+	.power_off	= octeon_ohci_power_off,
+};
+
+static u32 octeon_ohci_dma_mask = DMA_BIT_MASK(32);
+
 static int __init octeon_ohci_device_init(void)
 {
 	struct platform_device *pd;
@@ -280,7 +311,7 @@ static int __init octeon_ohci_device_init(void)
 	if (octeon_is_simulation() || usb_disabled())
 		return 0; /* No USB in the simulator. */
 
-	pd = platform_device_alloc("octeon-ohci", 0);
+	pd = platform_device_alloc("ohci-platform", 0);
 	if (!pd) {
 		ret = -ENOMEM;
 		goto out;
@@ -297,6 +328,10 @@ static int __init octeon_ohci_device_init(void)
 	if (ret)
 		goto fail;
 
+	pd.dev.platform_data = &octeon_ohci_pdata;
+	pd.dev.coherent_dma_mask = DMA_BIT_MASK(32);
+	pd.dev.dma_mask = &octeon_ohci_dma_mask;
+
 	ret = platform_device_add(pd);
 	if (ret)
 		goto fail;
-- 
1.7.9.5

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