linux-kernel - [PATCH 09/25] MIPS: Octeon: use ehci-platform driver

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Message-Id: <1349276601-8371-10-git-send-email-florian@openwrt.org>
Date:	Wed,  3 Oct 2012 17:03:04 +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 09/25] MIPS: Octeon: use ehci-platform driver

Signed-off-by: Florian Fainelli <florian@...nwrt.org>
---
 arch/mips/cavium-octeon/octeon-platform.c |   43 ++++++++++++++++++++++++++++-
 1 file changed, 42 insertions(+), 1 deletion(-)

diff --git a/arch/mips/cavium-octeon/octeon-platform.c b/arch/mips/cavium-octeon/octeon-platform.c
index 0938df1..539e1bc 100644
--- a/arch/mips/cavium-octeon/octeon-platform.c
+++ b/arch/mips/cavium-octeon/octeon-platform.c
@@ -18,9 +18,11 @@
 #include <linux/of_platform.h>
 #include <linux/of_fdt.h>
 #include <linux/libfdt.h>
+#include <linux/usb/ehci_pdriver.h>
 
 #include <asm/octeon/octeon.h>
 #include <asm/octeon/cvmx-rnm-defs.h>
+#include <asm/octeon/cvmx-uctlx-defs.h>
 #include <asm/octeon/cvmx-helper.h>
 #include <asm/octeon/cvmx-helper-board.h>
 
@@ -169,6 +171,41 @@ out:
 device_initcall(octeon_rng_device_init);
 
 #ifdef CONFIG_USB
+void octeon2_usb_clocks_start(void);
+void octeon2_usb_clocks_stop(void);
+
+static int octeon_ehci_power_on(struct platform_device *pdev)
+{
+	union cvmx_uctlx_ehci_ctl ehci_ctl;
+
+	octeon2_usb_clocks_start();
+
+	ehci_ctl.u64 = cvmx_read_csr(CVMX_UCTLX_EHCI_CTL(0));
+	/* Use 64-bit addressing. */
+	ehci_ctl.s.ehci_64b_addr_en = 1;
+	ehci_ctl.s.l2c_addr_msb = 0;
+	ehci_ctl.s.l2c_buff_emod = 1; /* Byte swapped. */
+	ehci_ctl.s.l2c_desc_emod = 1; /* Byte swapped. */
+	cvmx_write_csr(CVMX_UCTLX_EHCI_CTL(0), ehci_ctl.u64);
+
+	return 0;
+}
+
+static void octeon_ehci_power_off(struct platform_device *pdev)
+{
+	octeon2_usb_clocks_stop();
+}
+
+static struct usb_ehci_pdata octeon_ehci_pdata = {
+#ifdef __BIG_ENDIAN
+	.big_endian_mmio = 1,
+#endif
+	.port_power_on	= 1,
+	.power_on	= octeon_ehci_power_on,
+	.power_off	= octeon_ehci_power_off,
+};
+
+static u64 octeon_ehci_dma_mask = DMA_BIT_MASK(64);
 
 static int __init octeon_ehci_device_init(void)
 {
@@ -190,7 +227,7 @@ static int __init octeon_ehci_device_init(void)
 	if (octeon_is_simulation() || usb_disabled())
 		return 0; /* No USB in the simulator. */
 
-	pd = platform_device_alloc("octeon-ehci", 0);
+	pd = platform_device_alloc("ehci-platform", 0);
 	if (!pd) {
 		ret = -ENOMEM;
 		goto out;
@@ -207,6 +244,10 @@ static int __init octeon_ehci_device_init(void)
 	if (ret)
 		goto fail;
 
+	pd.dev.platform_data = &octeon_ehci_pdata;
+	pd.dev.coherent_dma_mask = DMA_BIT_MASK(32);
+	pd.dev.dma_mask = &octeon_ehci_dma_mask;
+
 	ret = platform_device_add(pd);
 	if (ret)
 		goto fail;
-- 
1.7.9.5

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