Subject: [PATCH V3 7/7] MIPS: BCM63XX: Create platform_device for USBD

From: Kevin Cernekee <[email-masked]>
Date: Sat, 14 Jul 2012 12:01:09 -0700

Signed-off-by: Kevin Cernekee <[email-masked]>
---
 arch/mips/bcm63xx/Makefile                         |  2 +-
 arch/mips/bcm63xx/boards/board_bcm963xx.c          | 10 ++++
 arch/mips/bcm63xx/dev-usb-usbd.c                   | 65 ++++++++++++++++++++++
 .../asm/mach-bcm63xx/bcm63xx_dev_usb_usbd.h        | 17 ++++++
 .../mips/include/asm/mach-bcm63xx/board_bcm963xx.h |  5 ++
 5 files changed, 98 insertions(+), 1 deletion(-)
 create mode 100644 arch/mips/bcm63xx/dev-usb-usbd.c
 create mode 100644 arch/mips/include/asm/mach-bcm63xx/bcm63xx_dev_usb_usbd.h

V3:

Jonas pointed out that one of the newer platforms does not use
consecutive IRQ numbers for the IUDMA interrupts.  So we will have to
eventually pass in individual IRQ resources, instead of a range.  Might
as well do this up front to avoid hassles later.

I will roll this into a new bundle:

http://patchwork.linux-mips.org/bundle/cernekee/bcm63xx-udc-prereq-v3/

diff --git a/arch/mips/bcm63xx/Makefile b/arch/mips/bcm63xx/Makefile
index 833af72..9bbb30a 100644
--- a/arch/mips/bcm63xx/Makefile
+++ b/arch/mips/bcm63xx/Makefile
@@ -1,6 +1,6 @@
 obj-y		+= clk.o cpu.o cs.o gpio.o irq.o prom.o setup.o timer.o \
 		   dev-dsp.o dev-enet.o dev-flash.o dev-pcmcia.o dev-rng.o \
-		   dev-spi.o dev-uart.o dev-wdt.o
+		   dev-spi.o dev-uart.o dev-wdt.o dev-usb-usbd.o
 obj-$(CONFIG_EARLY_PRINTK)	+= early_printk.o
 
 obj-y		+= boards/
diff --git a/arch/mips/bcm63xx/boards/board_bcm963xx.c b/arch/mips/bcm63xx/boards/board_bcm963xx.c
index feb0525..ea4ea77 100644
--- a/arch/mips/bcm63xx/boards/board_bcm963xx.c
+++ b/arch/mips/bcm63xx/boards/board_bcm963xx.c
@@ -24,6 +24,7 @@
 #include <bcm63xx_dev_flash.h>
 #include <bcm63xx_dev_pcmcia.h>
 #include <bcm63xx_dev_spi.h>
+#include <bcm63xx_dev_usb_usbd.h>
 #include <board_bcm963xx.h>
 
 #define PFX	"board_bcm963xx: "
@@ -42,6 +43,12 @@ static struct board_info __initdata board_96328avng = {
 
 	.has_uart0			= 1,
 	.has_pci			= 1,
+	.has_usbd			= 0,
+
+	.usbd = {
+		.use_fullspeed		= 0,
+		.port_no		= 0,
+	},
 
 	.leds = {
 		{
@@ -888,6 +895,9 @@ int __init board_register_devices(void)
 	    !board_get_mac_address(board.enet1.mac_addr))
 		bcm63xx_enet_register(1, &board.enet1);
 
+	if (board.has_usbd)
+		bcm63xx_usbd_register(&board.usbd);
+
 	if (board.has_dsp)
 		bcm63xx_dsp_register(&board.dsp);
 
diff --git a/arch/mips/bcm63xx/dev-usb-usbd.c b/arch/mips/bcm63xx/dev-usb-usbd.c
new file mode 100644
index 0000000..508bd9d
--- /dev/null
+++ b/arch/mips/bcm63xx/dev-usb-usbd.c
@@ -0,0 +1,65 @@
+/*
+ * This file is subject to the terms and conditions of the GNU General Public
+ * License.  See the file "COPYING" in the main directory of this archive
+ * for more details.
+ *
+ * Copyright (C) 2008 Maxime Bizon <[email-masked]>
+ * Copyright (C) 2012 Kevin Cernekee <[email-masked]>
+ * Copyright (C) 2012 Broadcom Corporation
+ */
+
+#include <linux/init.h>
+#include <linux/kernel.h>
+#include <linux/platform_device.h>
+#include <linux/dma-mapping.h>
+#include <bcm63xx_cpu.h>
+#include <bcm63xx_dev_usb_usbd.h>
+
+#define NUM_MMIO		2
+#define NUM_IRQ			7
+
+static struct resource usbd_resources[NUM_MMIO + NUM_IRQ];
+
+static u64 usbd_dmamask = DMA_BIT_MASK(32);
+
+static struct platform_device bcm63xx_usbd_device = {
+	.name		= "bcm63xx_udc",
+	.id		= -1,
+	.num_resources	= ARRAY_SIZE(usbd_resources),
+	.resource	= usbd_resources,
+	.dev		= {
+		.dma_mask		= &usbd_dmamask,
+		.coherent_dma_mask	= DMA_BIT_MASK(32),
+	},
+};
+
+int __init bcm63xx_usbd_register(const struct bcm63xx_usbd_platform_data *pd)
+{
+	const int irq_list[NUM_IRQ] = { IRQ_USBD,
+		IRQ_USBD_RXDMA0, IRQ_USBD_TXDMA0,
+		IRQ_USBD_RXDMA1, IRQ_USBD_TXDMA1,
+		IRQ_USBD_RXDMA2, IRQ_USBD_TXDMA2 };
+	int i;
+
+	if (!BCMCPU_IS_6328() && !BCMCPU_IS_6368())
+		return 0;
+
+	usbd_resources[0].start = bcm63xx_regset_address(RSET_USBD);
+	usbd_resources[0].end = usbd_resources[0].start + RSET_USBD_SIZE - 1;
+	usbd_resources[0].flags = IORESOURCE_MEM;
+
+	usbd_resources[1].start = bcm63xx_regset_address(RSET_USBDMA);
+	usbd_resources[1].end = usbd_resources[1].start + RSET_USBDMA_SIZE - 1;
+	usbd_resources[1].flags = IORESOURCE_MEM;
+
+	for (i = 0; i < NUM_IRQ; i++) {
+		struct resource *r = &usbd_resources[NUM_MMIO + i];
+
+		r->start = r->end = bcm63xx_get_irq_number(irq_list[i]);
+		r->flags = IORESOURCE_IRQ;
+	}
+
+	platform_device_add_data(&bcm63xx_usbd_device, pd, sizeof(*pd));
+
+	return platform_device_register(&bcm63xx_usbd_device);
+}
diff --git a/arch/mips/include/asm/mach-bcm63xx/bcm63xx_dev_usb_usbd.h b/arch/mips/include/asm/mach-bcm63xx/bcm63xx_dev_usb_usbd.h
new file mode 100644
index 0000000..5d6d698
--- /dev/null
+++ b/arch/mips/include/asm/mach-bcm63xx/bcm63xx_dev_usb_usbd.h
@@ -0,0 +1,17 @@
+#ifndef BCM63XX_DEV_USB_USBD_H_
+#define BCM63XX_DEV_USB_USBD_H_
+
+/*
+ * usb device platform data
+ */
+struct bcm63xx_usbd_platform_data {
+	/* board can only support full speed (USB 1.1) */
+	int use_fullspeed;
+
+	/* 0-based port index, for chips with >1 USB PHY */
+	int port_no;
+};
+
+int bcm63xx_usbd_register(const struct bcm63xx_usbd_platform_data *pd);
+
+#endif /* BCM63XX_DEV_USB_USBD_H_ */
diff --git a/arch/mips/include/asm/mach-bcm63xx/board_bcm963xx.h b/arch/mips/include/asm/mach-bcm63xx/board_bcm963xx.h
index 474daaa..b0dd4bb 100644
--- a/arch/mips/include/asm/mach-bcm63xx/board_bcm963xx.h
+++ b/arch/mips/include/asm/mach-bcm63xx/board_bcm963xx.h
@@ -5,6 +5,7 @@
 #include <linux/gpio.h>
 #include <linux/leds.h>
 #include <bcm63xx_dev_enet.h>
+#include <bcm63xx_dev_usb_usbd.h>
 #include <bcm63xx_dev_dsp.h>
 
 /*
@@ -44,6 +45,7 @@ struct board_info {
 	unsigned int	has_pccard:1;
 	unsigned int	has_ohci0:1;
 	unsigned int	has_ehci0:1;
+	unsigned int	has_usbd:1;
 	unsigned int	has_dsp:1;
 	unsigned int	has_uart0:1;
 	unsigned int	has_uart1:1;
@@ -52,6 +54,9 @@ struct board_info {
 	struct bcm63xx_enet_platform_data enet0;
 	struct bcm63xx_enet_platform_data enet1;
 
+	/* USB config */
+	struct bcm63xx_usbd_platform_data usbd;
+
 	/* DSP config */
 	struct bcm63xx_dsp_platform_data dsp;
 
-- 
1.7.11.1