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-rw-r--r--target/linux/cns21xx/patches-3.7/203-cns21xx-add-spi-master-device.patch117
1 files changed, 117 insertions, 0 deletions
diff --git a/target/linux/cns21xx/patches-3.7/203-cns21xx-add-spi-master-device.patch b/target/linux/cns21xx/patches-3.7/203-cns21xx-add-spi-master-device.patch
new file mode 100644
index 0000000000..31d210b4fc
--- /dev/null
+++ b/target/linux/cns21xx/patches-3.7/203-cns21xx-add-spi-master-device.patch
@@ -0,0 +1,117 @@
+--- /dev/null
++++ b/arch/arm/mach-cns21xx/dev-spi-master.c
+@@ -0,0 +1,83 @@
++/*
++ * Copyright (c) 2010-2012 Gabor Juhos <juhosg@openwrt.org>
++ *
++ * This file is free software; you can redistribute it and/or modify
++ * it under the terms of the GNU General Public License, Version 2, as
++ * published by the Free Software Foundation.
++ */
++
++#include <linux/kernel.h>
++#include <linux/init.h>
++#include <linux/spi/spi.h>
++#include <linux/dma-mapping.h>
++#include <linux/platform_device.h>
++
++#include <mach/hardware.h>
++#include <mach/cns21xx.h>
++#include <mach/cns21xx_misc.h>
++#include <mach/cns21xx_powermgmt.h>
++#include <mach/irqs.h>
++
++#include "common.h"
++
++static u64 spi_dmamask = DMA_BIT_MASK(32);
++static struct resource cns21xx_spi_resources[] = {
++ [0] = {
++ .start = CNS21XX_SPI_BASE,
++ .end = CNS21XX_SPI_BASE + SZ_4K - 1,
++ .flags = IORESOURCE_MEM,
++ },
++ [1] = {
++ .start = CNS21XX_IRQ_SPI,
++ .end = CNS21XX_IRQ_SPI,
++ .flags = IORESOURCE_IRQ,
++ },
++};
++
++static struct platform_device cns21xx_spi_master_device = {
++ .name = "cns21xx-spi",
++ .id = -1,
++ .dev = {
++ .dma_mask = &spi_dmamask,
++ .coherent_dma_mask = DMA_BIT_MASK(32),
++ },
++ .resource = cns21xx_spi_resources,
++ .num_resources = ARRAY_SIZE(cns21xx_spi_resources),
++};
++
++void __init cns21xx_register_spi_master(int id, struct spi_board_info *info,
++ unsigned int n)
++{
++ unsigned int i;
++
++ /* Enable SPI pins */
++ HAL_MISC_ENABLE_SPIDR_PINS();
++ HAL_MISC_ENABLE_SPICLK_PINS();
++ for (i = 0; i < n; i++) {
++ switch (info[i].chip_select) {
++ case 0:
++ HAL_MISC_ENABLE_SPICSN0_PINS();
++ break;
++ case 1:
++ HAL_MISC_ENABLE_SPICSN1_PINS();
++ break;
++ case 2:
++ HAL_MISC_ENABLE_SPICSN2_PINS();
++ break;
++ case 3:
++ HAL_MISC_ENABLE_SPICSN3_PINS();
++ break;
++ }
++ }
++
++ /* Disable SPI serial flash access through 0x30000000 region */
++ HAL_MISC_DISABLE_SPI_SERIAL_FLASH_BANK_ACCESS();
++
++ /* Enable SPI clock */
++ HAL_PWRMGT_ENABLE_SPI_CLOCK();
++
++ cns21xx_spi_master_device.id = id;
++
++ spi_register_board_info(info, n);
++ platform_device_register(&cns21xx_spi_master_device);
++}
+--- a/arch/arm/mach-cns21xx/Kconfig
++++ b/arch/arm/mach-cns21xx/Kconfig
+@@ -6,4 +6,7 @@ endmenu
+ config CNS21XX_DEV_USB
+ def_bool n
+
++config CNS21XX_DEV_SPI_MASTER
++ def_bool n
++
+ endif
+--- a/arch/arm/mach-cns21xx/Makefile
++++ b/arch/arm/mach-cns21xx/Makefile
+@@ -8,6 +8,7 @@ obj-y := core.o devices.o gpio.o irq.o
+
+ # devices
+ obj-$(CONFIG_CNS21XX_DEV_USB) += dev-usb.o
++obj-$(CONFIG_CNS21XX_DEV_SPI_MASTER) += dev-spi-master.o
+
+ # machine specific files
+
+--- a/arch/arm/mach-cns21xx/common.h
++++ b/arch/arm/mach-cns21xx/common.h
+@@ -22,4 +22,8 @@ int cns21xx_register_uart1(void);
+ int cns21xx_register_usb(void);
+ int cns21xx_register_wdt(void);
+
++struct spi_board_info;
++void __init cns21xx_register_spi_master(int id, struct spi_board_info *info,
++ unsigned int n);
++
+ #endif /* _MACH_CNS21XX_COMMON_H */