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ar71xx: rb91x: add SPI device for the serial shift register

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The RB91x boards are using a serial shift register
connected to the SPI bus to drive some of the LEDs.

Rework the board setup code to register a SPI device
for that. This makes it possible to use the 'spi-74x164'
driver to control the device.

Signed-off-by: Gabor Juhos <juhosg@openwrt.org>

SVN-Revision: 39703
This commit is contained in:
Gabor Juhos 2014-02-23 08:11:52 +00:00
parent 7b89005f0d
commit 14d95026b2
2 changed files with 63 additions and 3 deletions
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64
target/linux/ar71xx/files/arch/mips/ath79/mach-rb91x.c
View file

@ -33,9 +33,9 @@
#include "common.h"
#include "dev-eth.h"
#include "dev-leds-gpio.h"
#include "dev-m25p80.h"
#include "dev-nfc.h"
#include "dev-usb.h"
#include "dev-spi.h"
#include "dev-wmac.h"
#include "machtypes.h"
#include "pci.h"
@ -55,6 +55,19 @@
#define RB91X_LATCH_GPIO_BASE AR934X_GPIO_COUNT
#define RB91X_LATCH_GPIO(_x) (RB91X_LATCH_GPIO_BASE + (_x))
#define RB91X_SSR_GPIO_BASE (RB91X_LATCH_GPIO_BASE + AR934X_GPIO_COUNT)
#define RB91X_SSR_GPIO(_x) (RB91X_SSR_GPIO_BASE + (_x))
#define RB91X_SSR_BIT_LED1 0
#define RB91X_SSR_BIT_LED2 1
#define RB91X_SSR_BIT_LED3 2
#define RB91X_SSR_BIT_LED4 3
#define RB91X_SSR_BIT_LED5 4
#define RB91X_SSR_BIT_5 5
#define RB91X_SSR_BIT_USB_POWER 6
#define RB91X_SSR_BIT_PCIE_POWER 7
#define RB91X_GPIO_SSR_STROBE RB91X_LATCH_GPIO(0)
#define RB91X_GPIO_NAND_READ RB91X_LATCH_GPIO(3)
#define RB91X_GPIO_NAND_RDY RB91X_LATCH_GPIO(4)
#define RB91X_GPIO_NLE RB91X_LATCH_GPIO(11)
@ -116,6 +129,52 @@ static struct rb91x_nand_platform_data rb711gr100_nand_data __initdata = {
.gpio_nle = RB91X_GPIO_NLE,
};
static u8 rb711gr100_ssr_initdata[] __initdata = {
BIT(RB91X_SSR_BIT_PCIE_POWER) |
BIT(RB91X_SSR_BIT_USB_POWER) |
BIT(RB91X_SSR_BIT_5)
};
static struct gen_74x164_chip_platform_data rb711gr100_ssr_data = {
.base = RB91X_SSR_GPIO_BASE,
.num_registers = ARRAY_SIZE(rb711gr100_ssr_initdata),
.init_data = rb711gr100_ssr_initdata,
};
static struct ath79_spi_controller_data rb711gr100_spi0_cdata = {
.cs_type = ATH79_SPI_CS_TYPE_INTERNAL,
.cs_line = 0,
.is_flash = true,
};
static struct ath79_spi_controller_data rb711gr100_spi1_cdata = {
.cs_type = ATH79_SPI_CS_TYPE_GPIO,
.cs_line = RB91X_GPIO_SSR_STROBE,
};
static struct spi_board_info rb711gr100_spi_info[] = {
{
.bus_num = 0,
.chip_select = 0,
.max_speed_hz = 25000000,
.modalias = "m25p80",
.platform_data = &rb711gr100_spi_flash_data,
.controller_data = &rb711gr100_spi0_cdata
}, {
.bus_num = 0,
.chip_select = 1,
.max_speed_hz = 10000000,
.modalias = "74x164",
.platform_data = &rb711gr100_ssr_data,
.controller_data = &rb711gr100_spi1_cdata
}
};
static struct ath79_spi_platform_data rb711gr100_spi_data __initdata = {
.bus_num = 0,
.num_chipselect = 2,
};
static void __init rb711gr100_init_partitions(const struct rb_info *info)
{
rb711gr100_spi_partitions[0].size = info->hard_cfg_offs;
@ -182,7 +241,8 @@ static void __init rb711gr100_setup(void)
mips_set_machine_name(buf);
rb711gr100_init_partitions(info);
ath79_register_m25p80(&rb711gr100_spi_flash_data);
ath79_register_spi(&rb711gr100_spi_data, rb711gr100_spi_info,
ARRAY_SIZE(rb711gr100_spi_info));
ath79_setup_ar934x_eth_cfg(AR934X_ETH_CFG_RGMII_GMAC0 |
AR934X_ETH_CFG_SW_ONLY_MODE);

2
target/linux/ar71xx/patches-3.10/703-MIPS-ath79-add-RB91x-support.patch
View file

@ -18,7 +18,7 @@
+ bool "MikroTik RouterBOARD 91X support"
+ select SOC_AR934X
+ select ATH79_DEV_ETH
+ select ATH79_DEV_M25P80
+ select ATH79_DEV_SPI
+ select ATH79_DEV_WMAC
+ select ATH79_DEV_USB
+ select ATH79_ROUTERBOOT