diff options
Diffstat (limited to 'target/linux/cns21xx/patches-3.3/203-cns21xx-add-spi-master-device.patch')
| -rw-r--r-- | target/linux/cns21xx/patches-3.3/203-cns21xx-add-spi-master-device.patch | 117 |
1 files changed, 117 insertions, 0 deletions
diff --git a/target/linux/cns21xx/patches-3.3/203-cns21xx-add-spi-master-device.patch b/target/linux/cns21xx/patches-3.3/203-cns21xx-add-spi-master-device.patch new file mode 100644 index 0000000..31d210b --- /dev/null +++ b/target/linux/cns21xx/patches-3.3/203-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 */ |