cns3xxx: fix USB ehci/ohci platform driver

Update ehci/ohci driver registration to conform to the new platform
drivers.

This fixes missing USB host support in 3.8.x

Signed-off-by: Tim Harvey <tharvey@gateworks.com>

git-svn-id: svn://svn.openwrt.org/openwrt/trunk@36309 3c298f89-4303-0410-b956-a3cf2f4a3e73

1 files changed, 51 insertions, 3 deletions

diff --git a/target/linux/cns3xxx/files/arch/arm/mach-cns3xxx/laguna.c b/target/linux/cns3xxx/files/arch/arm/mach-cns3xxx/laguna.c
index cd1aa716dc..9c835f3010 100644
--- a/target/linux/cns3xxx/files/arch/arm/mach-cns3xxx/laguna.c
+++ b/target/linux/cns3xxx/files/arch/arm/mach-cns3xxx/laguna.c
@@ -9,7 +9,7 @@
  *		  Anton Vorontsov <avorontsov@mvista.com>
  * Copyright 2011 Gateworks Corporation
  *		  Chris Lang <clang@gateworks.com>
- * Copyright 2012 Gateworks Corporation
+ * Copyright 2012-2013 Gateworks Corporation
  *		  Tim Harvey <tharvey@gateworks.com>
  *
  * This file is free software; you can redistribute it and/or modify
@@ -37,6 +37,8 @@
 #include <linux/spi/flash.h>
 #include <linux/if_ether.h>
 #include <linux/pps-gpio.h>
+#include <linux/usb/ehci_pdriver.h>
+#include <linux/usb/ohci_pdriver.h>
 #include <asm/setup.h>
 #include <asm/mach-types.h>
 #include <asm/mach/arch.h>
@@ -414,13 +416,52 @@ static struct resource cns3xxx_usb_ehci_resources[] = {
 
 static u64 cns3xxx_usb_ehci_dma_mask = DMA_BIT_MASK(32);
 
+static int csn3xxx_usb_power_on(struct platform_device *pdev)
+{
+	/*
+	 * EHCI and OHCI share the same clock and power,
+	 * resetting twice would cause the 1st controller been reset.
+	 * Therefore only do power up  at the first up device, and
+	 * power down at the last down device.
+	 *
+	 * Set USB AHB INCR length to 16
+	 */
+	if (atomic_inc_return(&usb_pwr_ref) == 1) {
+		cns3xxx_pwr_power_up(1 << PM_PLL_HM_PD_CTRL_REG_OFFSET_PLL_USB);
+		cns3xxx_pwr_clk_en(1 << PM_CLK_GATE_REG_OFFSET_USB_HOST);
+		cns3xxx_pwr_soft_rst(1 << PM_SOFT_RST_REG_OFFST_USB_HOST);
+		__raw_writel((__raw_readl(MISC_CHIP_CONFIG_REG) | (0X2 << 24)),
+			MISC_CHIP_CONFIG_REG);
+	}
+
+	return 0;
+}
+
+static void csn3xxx_usb_power_off(struct platform_device *pdev)
+{
+	/*
+	 * EHCI and OHCI share the same clock and power,
+	 * resetting twice would cause the 1st controller been reset.
+	 * Therefore only do power up  at the first up device, and
+	 * power down at the last down device.
+	 */
+	if (atomic_dec_return(&usb_pwr_ref) == 0)
+		cns3xxx_pwr_clk_dis(1 << PM_CLK_GATE_REG_OFFSET_USB_HOST);
+}
+
+static struct usb_ehci_pdata cns3xxx_usb_ehci_pdata = {
+	.power_on	= csn3xxx_usb_power_on,
+	.power_off	= csn3xxx_usb_power_off,
+};
+
 static struct platform_device cns3xxx_usb_ehci_device = {
-	.name          = "cns3xxx-ehci",
+	.name          = "ehci-platform",
 	.num_resources = ARRAY_SIZE(cns3xxx_usb_ehci_resources),
 	.resource      = cns3xxx_usb_ehci_resources,
 	.dev           = {
 		.dma_mask          = &cns3xxx_usb_ehci_dma_mask,
 		.coherent_dma_mask = DMA_BIT_MASK(32),
+		.platform_data     = &cns3xxx_usb_ehci_pdata,
 	},
 };
 
@@ -438,13 +479,20 @@ static struct resource cns3xxx_usb_ohci_resources[] = {
 
 static u64 cns3xxx_usb_ohci_dma_mask = DMA_BIT_MASK(32);
 
+static struct usb_ohci_pdata cns3xxx_usb_ohci_pdata = {
+	.num_ports	= 1,
+	.power_on	= csn3xxx_usb_power_on,
+	.power_off	= csn3xxx_usb_power_off,
+};
+
 static struct platform_device cns3xxx_usb_ohci_device = {
-	.name          = "cns3xxx-ohci",
+	.name          = "ohci-platform",
 	.num_resources = ARRAY_SIZE(cns3xxx_usb_ohci_resources),
 	.resource      = cns3xxx_usb_ohci_resources,
 	.dev           = {
 		.dma_mask          = &cns3xxx_usb_ohci_dma_mask,
 		.coherent_dma_mask = DMA_BIT_MASK(32),
+		.platform_data	   = &cns3xxx_usb_ohci_pdata,
 	},
 };