bcm63xx: add support for the HSSPI controller

Add support for the HSSPI controller found on bcm6328 and SPI attached
flash.

git-svn-id: svn://svn.openwrt.org/openwrt/trunk@31879 3c298f89-4303-0410-b956-a3cf2f4a3e73

1 files changed, 136 insertions, 0 deletions

diff --git a/target/linux/brcm63xx/patches-3.3/418-MIPS-BCM63XX-add-HS-SPI-platform-device-and-register.patch b/target/linux/brcm63xx/patches-3.3/418-MIPS-BCM63XX-add-HS-SPI-platform-device-and-register.patch
new file mode 100644
index 0000000000..a5b5320363
--- /dev/null
+++ b/target/linux/brcm63xx/patches-3.3/418-MIPS-BCM63XX-add-HS-SPI-platform-device-and-register.patch
@@ -0,0 +1,136 @@
+From a2b75f344cdc0f9e12c7909511d95b27be72c6b9 Mon Sep 17 00:00:00 2001
+From: Jonas Gorski <jonas.gorski@gmail.com>
+Date: Sat, 12 Nov 2011 12:18:26 +0100
+Subject: [PATCH 52/79] MIPS: BCM63XX: add HS SPI platform device and register
+ it
+
+Signed-off-by: Jonas Gorski <jonas.gorski@gmail.com>
+---
+ arch/mips/bcm63xx/Makefile                         |    5 +-
+ arch/mips/bcm63xx/boards/board_bcm963xx.c          |    2 +
+ arch/mips/bcm63xx/dev-hsspi.c                      |   58 ++++++++++++++++++++
+ .../include/asm/mach-bcm63xx/bcm63xx_dev_hsspi.h   |   26 +++++++++
+ 4 files changed, 89 insertions(+), 2 deletions(-)
+ create mode 100644 arch/mips/bcm63xx/dev-hsspi.c
+ create mode 100644 arch/mips/include/asm/mach-bcm63xx/bcm63xx_dev_hsspi.h
+
+--- a/arch/mips/bcm63xx/Makefile
++++ b/arch/mips/bcm63xx/Makefile
+@@ -1,6 +1,7 @@
+ 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-spi.o \
+-		   dev-trng.o dev-uart.o dev-usb-ehci.o dev-usb-ohci.o dev-wdt.o
++		   dev-dsp.o dev-enet.o dev-flash.o dev-hsspi.o dev-pcmcia.o \
++		   dev-spi.o dev-trng.o dev-uart.o dev-usb-ehci.o \
++		   dev-usb-ohci.o dev-wdt.o
+ obj-$(CONFIG_EARLY_PRINTK)	+= early_printk.o
+ 
+ obj-y		+= boards/
+--- a/arch/mips/bcm63xx/boards/board_bcm963xx.c
++++ b/arch/mips/bcm63xx/boards/board_bcm963xx.c
+@@ -24,6 +24,7 @@
+ #include <bcm63xx_dev_enet.h>
+ #include <bcm63xx_dev_dsp.h>
+ #include <bcm63xx_dev_flash.h>
++#include <bcm63xx_dev_hsspi.h>
+ #include <bcm63xx_dev_pcmcia.h>
+ #include <bcm63xx_dev_spi.h>
+ #include <bcm63xx_dev_usb_ohci.h>
+@@ -940,6 +941,7 @@ int __init board_register_devices(void)
+ 			pr_err(PFX "failed to register fallback SPROM\n");
+ 	}
+ #endif
++	bcm63xx_hsspi_register();
+ 
+ 	bcm63xx_spi_register();
+ 
+--- /dev/null
++++ b/arch/mips/bcm63xx/dev-hsspi.c
+@@ -0,0 +1,58 @@
++/*
++ * 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) 2009 Florian Fainelli <florian@openwrt.org>
++ * Copyright (C) 2010 Tanguy Bouzeloc <tanguy.bouzeloc@efixo.com>
++ */
++
++#include <linux/init.h>
++#include <linux/kernel.h>
++#include <linux/platform_device.h>
++
++#include <bcm63xx_cpu.h>
++#include <bcm63xx_dev_hsspi.h>
++#include <bcm63xx_regs.h>
++
++static struct resource spi_resources[] = {
++	{
++		.start		= -1, /* filled at runtime */
++		.end		= -1, /* filled at runtime */
++		.flags		= IORESOURCE_MEM,
++	},
++	{
++		.start		= -1, /* filled at runtime */
++		.flags		= IORESOURCE_IRQ,
++	},
++};
++
++static struct bcm63xx_hsspi_pdata spi_pdata = {
++	.bus_num	= 0,
++};
++
++static struct platform_device bcm63xx_hsspi_device = {
++	.name		= "bcm63xx-hsspi",
++	.id		= 0,
++	.num_resources	= ARRAY_SIZE(spi_resources),
++	.resource	= spi_resources,
++	.dev		= {
++		.platform_data = &spi_pdata,
++	},
++};
++
++int __init bcm63xx_hsspi_register(void)
++{
++
++	if (!BCMCPU_IS_6328())
++		return -ENODEV;
++
++	spi_resources[0].start = bcm63xx_regset_address(RSET_HSSPI);
++	spi_resources[0].end = spi_resources[0].start;
++	spi_resources[0].end += RSET_HSSPI_SIZE - 1;
++	spi_resources[1].start = bcm63xx_get_irq_number(IRQ_HSSPI);
++
++	spi_pdata.speed_hz = HSSPI_PLL_HZ_6328;
++
++	return platform_device_register(&bcm63xx_hsspi_device);
++}
+--- /dev/null
++++ b/arch/mips/include/asm/mach-bcm63xx/bcm63xx_dev_hsspi.h
+@@ -0,0 +1,26 @@
++#ifndef BCM63XX_DEV_HSSPI_H
++#define BCM63XX_DEV_HSSPI_H
++
++#include <linux/types.h>
++#include <bcm63xx_io.h>
++#include <bcm63xx_regs.h>
++
++int __init bcm63xx_hsspi_register(void);
++
++struct bcm63xx_hsspi_pdata {
++	int		bus_num;
++	u32		speed_hz;
++};
++
++#define bcm_hsspi_readl(o)	bcm_rset_readl(RSET_HSSPI, (o))
++#define bcm_hsspi_writel(v, o)	bcm_rset_writel(RSET_HSSPI, (v), (o))
++
++#define HSSPI_PLL_HZ_6328	133333333
++
++#define HSSPI_OP_CODE_SHIFT	13
++#define HSSPI_OP_SLEEP		(0 << HSSPI_OP_CODE_SHIFT)
++#define HSSPI_OP_READ_WRITE	(1 << HSSPI_OP_CODE_SHIFT)
++#define HSSPI_OP_WRITE		(2 << HSSPI_OP_CODE_SHIFT)
++#define HSSPI_OP_READ		(3 << HSSPI_OP_CODE_SHIFT)
++
++#endif /* BCM63XX_DEV_HSSPI_H */