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authorjuhosg <juhosg@3c298f89-4303-0410-b956-a3cf2f4a3e73>2010-08-31 20:13:47 +0000
committerjuhosg <juhosg@3c298f89-4303-0410-b956-a3cf2f4a3e73>2010-08-31 20:13:47 +0000
commitd1f333874d4c4ff3f4a27ec3eb08d3f7ca6d8e43 (patch)
treec66acc497fee281492a4775a34cf0c3c7434a70b /target/linux/ar71xx/files/arch
parentc433567bd3abf153f116b01fec22538a3c9d7fe7 (diff)
ar71xx: rewrite SPI drivers for the RB4xx boards
* add a new SPI controller driver * add SPI driver for the CPLD chip * convert the NAND driver * enable the mikroSD slot * enable more LEDs git-svn-id: svn://svn.openwrt.org/openwrt/trunk@22863 3c298f89-4303-0410-b956-a3cf2f4a3e73
Diffstat (limited to 'target/linux/ar71xx/files/arch')
-rw-r--r--target/linux/ar71xx/files/arch/mips/ar71xx/mach-rb4xx.c157
-rw-r--r--target/linux/ar71xx/files/arch/mips/include/asm/mach-ar71xx/rb4xx_cpld.h48
2 files changed, 146 insertions, 59 deletions
diff --git a/target/linux/ar71xx/files/arch/mips/ar71xx/mach-rb4xx.c b/target/linux/ar71xx/files/arch/mips/ar71xx/mach-rb4xx.c
index a477cd3ad..8694211d9 100644
--- a/target/linux/ar71xx/files/arch/mips/ar71xx/mach-rb4xx.c
+++ b/target/linux/ar71xx/files/arch/mips/ar71xx/mach-rb4xx.c
@@ -1,7 +1,7 @@
/*
* MikroTik RouterBOARD 4xx series support
*
- * Copyright (C) 2008 Gabor Juhos <juhosg@openwrt.org>
+ * Copyright (C) 2008-2010 Gabor Juhos <juhosg@openwrt.org>
* Copyright (C) 2008 Imre Kaloz <kaloz@openwrt.org>
*
* This program is free software; you can redistribute it and/or modify it
@@ -15,9 +15,12 @@
#include <linux/spi/spi.h>
#include <linux/spi/flash.h>
#include <linux/spi/mmc_spi.h>
+#include <linux/mtd/mtd.h>
+#include <linux/mtd/partitions.h>
#include <asm/mach-ar71xx/ar71xx.h>
#include <asm/mach-ar71xx/pci.h>
+#include <asm/mach-ar71xx/rb4xx_cpld.h>
#include "machtype.h"
#include "devices.h"
@@ -28,6 +31,13 @@
#define RB4XX_GPIO_USER_LED 4
#define RB4XX_GPIO_RESET_SWITCH 7
+#define RB4XX_GPIO_CPLD_BASE 32
+#define RB4XX_GPIO_CPLD_LED1 (RB4XX_GPIO_CPLD_BASE + CPLD_GPIO_nLED1)
+#define RB4XX_GPIO_CPLD_LED2 (RB4XX_GPIO_CPLD_BASE + CPLD_GPIO_nLED2)
+#define RB4XX_GPIO_CPLD_LED3 (RB4XX_GPIO_CPLD_BASE + CPLD_GPIO_nLED3)
+#define RB4XX_GPIO_CPLD_LED4 (RB4XX_GPIO_CPLD_BASE + CPLD_GPIO_nLED4)
+#define RB4XX_GPIO_CPLD_LED5 (RB4XX_GPIO_CPLD_BASE + CPLD_GPIO_nLED5)
+
#define RB4XX_BUTTONS_POLL_INTERVAL 20
static struct gpio_led rb4xx_leds_gpio[] __initdata = {
@@ -35,6 +45,26 @@ static struct gpio_led rb4xx_leds_gpio[] __initdata = {
.name = "rb4xx:yellow:user",
.gpio = RB4XX_GPIO_USER_LED,
.active_low = 0,
+ }, {
+ .name = "rb4xx:green:led1",
+ .gpio = RB4XX_GPIO_CPLD_LED1,
+ .active_low = 1,
+ }, {
+ .name = "rb4xx:green:led2",
+ .gpio = RB4XX_GPIO_CPLD_LED2,
+ .active_low = 1,
+ }, {
+ .name = "rb4xx:green:led3",
+ .gpio = RB4XX_GPIO_CPLD_LED3,
+ .active_low = 1,
+ }, {
+ .name = "rb4xx:green:led4",
+ .gpio = RB4XX_GPIO_CPLD_LED4,
+ .active_low = 1,
+ }, {
+ .name = "rb4xx:green:led5",
+ .gpio = RB4XX_GPIO_CPLD_LED5,
+ .active_low = 0,
},
};
@@ -78,84 +108,90 @@ static struct ar71xx_pci_irq rb4xx_pci_irqs[] __initdata = {
}
};
-#if 0
-/*
- * SPI device support is experimental
- */
+#ifdef CONFIG_MTD_PARTITIONS
+static struct mtd_partition rb4xx_partitions[] = {
+ {
+ .name = "routerboot",
+ .offset = 0,
+ .size = 0x0b000,
+ .mask_flags = MTD_WRITEABLE,
+ }, {
+ .name = "hard_config",
+ .offset = 0x0b000,
+ .size = 0x01000,
+ .mask_flags = MTD_WRITEABLE,
+ }, {
+ .name = "bios",
+ .offset = 0x0d000,
+ .size = 0x02000,
+ .mask_flags = MTD_WRITEABLE,
+ }, {
+ .name = "soft_config",
+ .offset = 0x0f000,
+ .size = 0x01000,
+ }
+};
+#define rb4xx_num_partitions ARRAY_SIZE(rb4xx_partitions)
+#else /* CONFIG_MTD_PARTITIONS */
+#define rb4xx_partitions NULL
+#define rb4xx_num_partitions 0
+#endif /* CONFIG_MTD_PARTITIONS */
+
static struct flash_platform_data rb4xx_flash_data = {
.type = "pm25lv512",
+ .parts = rb4xx_partitions,
+ .nr_parts = rb4xx_num_partitions,
};
-static struct spi_board_info rb4xx_spi_info[] = {
- {
- .bus_num = 0,
- .chip_select = 0,
- .max_speed_hz = 25000000,
- .modalias = "m25p80",
- .platform_data = &rb4xx_flash_data,
- }
+static struct rb4xx_cpld_platform_data rb4xx_cpld_data = {
+ .gpio_base = RB4XX_GPIO_CPLD_BASE,
};
-static struct mmc_spi_platform_data rb433_mmc_data = {
+static struct mmc_spi_platform_data rb4xx_mmc_data = {
.ocr_mask = MMC_VDD_32_33 | MMC_VDD_33_34,
};
-static struct spi_board_info rb433_spi_info[] = {
+static struct spi_board_info rb4xx_spi_info[] = {
{
.bus_num = 0,
.chip_select = 0,
.max_speed_hz = 25000000,
.modalias = "m25p80",
- .platform_data = &rb433_flash_data,
+ .platform_data = &rb4xx_flash_data,
}, {
.bus_num = 0,
- .chip_select = 2,
+ .chip_select = 1,
.max_speed_hz = 25000000,
- .modalias = "mmc_spi",
- .platform_data = &rb433_mmc_data,
+ .modalias = "spi-rb4xx-cpld",
+ .platform_data = &rb4xx_cpld_data,
}
};
-static u32 rb433_spi_get_ioc_base(u8 chip_select, int cs_high, int is_on)
-{
- u32 ret;
-
- if (is_on == AR71XX_SPI_CS_INACTIVE) {
- ret = SPI_IOC_CS0 | SPI_IOC_CS1;
- } else {
- if (cs_high) {
- ret = SPI_IOC_CS0 | SPI_IOC_CS1;
- } else {
- if ((chip_select ^ 2) == 0)
- ret = SPI_IOC_CS1 ^ (SPI_IOC_CS0 | SPI_IOC_CS1);
- else
- ret = SPI_IOC_CS0 ^ (SPI_IOC_CS0 | SPI_IOC_CS1);
- }
+static struct spi_board_info rb4xx_microsd_info[] = {
+ {
+ .bus_num = 0,
+ .chip_select = 2,
+ .max_speed_hz = 25000000,
+ .modalias = "mmc_spi",
+ .platform_data = &rb4xx_mmc_data,
}
+};
- return ret;
-}
-struct ar71xx_spi_platform_data rb433_spi_data = {
- .bus_num = 0,
- .num_chipselect = 3,
- .get_ioc_base = rb433_spi_get_ioc_base,
+static struct resource rb4xx_spi_resources[] = {
+ {
+ .start = AR71XX_SPI_BASE,
+ .end = AR71XX_SPI_BASE + AR71XX_SPI_SIZE - 1,
+ .flags = IORESOURCE_MEM,
+ },
};
-static void rb4xx_add_device_spi(void)
-{
- ar71xx_add_device_spi(NULL, rb4xx_spi_info, ARRAY_SIZE(rb4xx_spi_info));
-}
-
-static void rb433_add_device_spi(void)
-{
- ar71xx_add_device_spi(&rb433_spi_data, rb433_spi_info,
- ARRAY_SIZE(rb433_spi_info));
-}
-#else
-static inline void rb4xx_add_device_spi(void) {}
-static inline void rb433_add_device_spi(void) {}
-#endif
+static struct platform_device rb4xx_spi_device = {
+ .name = "rb4xx-spi",
+ .id = -1,
+ .resource = rb4xx_spi_resources,
+ .num_resources = ARRAY_SIZE(rb4xx_spi_resources),
+};
static void __init rb4xx_generic_setup(void)
{
@@ -169,13 +205,16 @@ static void __init rb4xx_generic_setup(void)
ARRAY_SIZE(rb4xx_gpio_buttons),
rb4xx_gpio_buttons);
+ spi_register_board_info(rb4xx_spi_info, ARRAY_SIZE(rb4xx_spi_info));
+ platform_device_register(&rb4xx_spi_device);
platform_device_register(&rb4xx_nand_device);
}
static void __init rb411_setup(void)
{
rb4xx_generic_setup();
- rb4xx_add_device_spi();
+ spi_register_board_info(rb4xx_microsd_info,
+ ARRAY_SIZE(rb4xx_microsd_info));
ar71xx_add_device_mdio(0xfffffffc);
@@ -207,7 +246,8 @@ MIPS_MACHINE(AR71XX_MACH_RB_411U, "411U", "MikroTik RouterBOARD 411U",
static void __init rb433_setup(void)
{
rb4xx_generic_setup();
- rb433_add_device_spi();
+ spi_register_board_info(rb4xx_microsd_info,
+ ARRAY_SIZE(rb4xx_microsd_info));
ar71xx_add_device_mdio(~RB433_MDIO_PHYMASK);
@@ -244,8 +284,6 @@ MIPS_MACHINE(AR71XX_MACH_RB_433U, "433U", "MikroTik RouterBOARD 433UAH",
static void __init rb450_generic_setup(int gige)
{
rb4xx_generic_setup();
- rb4xx_add_device_spi();
-
ar71xx_add_device_mdio(~RB450_MDIO_PHYMASK);
ar71xx_init_mac(ar71xx_eth0_data.mac_addr, ar71xx_mac_base, 1);
@@ -271,6 +309,8 @@ MIPS_MACHINE(AR71XX_MACH_RB_450, "450", "MikroTik RouterBOARD 450",
static void __init rb450g_setup(void)
{
rb450_generic_setup(1);
+ spi_register_board_info(rb4xx_microsd_info,
+ ARRAY_SIZE(rb4xx_microsd_info));
}
MIPS_MACHINE(AR71XX_MACH_RB_450G, "450G", "MikroTik RouterBOARD 450G",
@@ -279,7 +319,6 @@ MIPS_MACHINE(AR71XX_MACH_RB_450G, "450G", "MikroTik RouterBOARD 450G",
static void __init rb493_setup(void)
{
rb4xx_generic_setup();
- rb4xx_add_device_spi();
ar71xx_add_device_mdio(0x3fffff00);
diff --git a/target/linux/ar71xx/files/arch/mips/include/asm/mach-ar71xx/rb4xx_cpld.h b/target/linux/ar71xx/files/arch/mips/include/asm/mach-ar71xx/rb4xx_cpld.h
new file mode 100644
index 000000000..5b17e94b6
--- /dev/null
+++ b/target/linux/ar71xx/files/arch/mips/include/asm/mach-ar71xx/rb4xx_cpld.h
@@ -0,0 +1,48 @@
+/*
+ * SPI driver definitions for the CPLD chip on the Mikrotik RB4xx boards
+ *
+ * Copyright (C) 2010 Gabor Juhos <juhosg@openwrt.org>
+ *
+ * This file was based on the patches for Linux 2.6.27.39 published by
+ * MikroTik for their RouterBoard 4xx series devices.
+ *
+ * This program 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.
+ */
+
+#define CPLD_GPIO_nLED1 0
+#define CPLD_GPIO_nLED2 1
+#define CPLD_GPIO_nLED3 2
+#define CPLD_GPIO_nLED4 3
+#define CPLD_GPIO_FAN 4
+#define CPLD_GPIO_ALE 5
+#define CPLD_GPIO_CLE 6
+#define CPLD_GPIO_nCE 7
+#define CPLD_GPIO_nLED5 8
+
+#define CPLD_NUM_GPIOS 9
+
+#define CPLD_CFG_nLED1 BIT(CPLD_GPIO_nLED1)
+#define CPLD_CFG_nLED2 BIT(CPLD_GPIO_nLED2)
+#define CPLD_CFG_nLED3 BIT(CPLD_GPIO_nLED3)
+#define CPLD_CFG_nLED4 BIT(CPLD_GPIO_nLED4)
+#define CPLD_CFG_FAN BIT(CPLD_GPIO_FAN)
+#define CPLD_CFG_ALE BIT(CPLD_GPIO_ALE)
+#define CPLD_CFG_CLE BIT(CPLD_GPIO_CLE)
+#define CPLD_CFG_nCE BIT(CPLD_GPIO_nCE)
+#define CPLD_CFG_nLED5 BIT(CPLD_GPIO_nLED5)
+
+struct rb4xx_cpld_platform_data {
+ unsigned gpio_base;
+};
+
+extern int rb4xx_cpld_change_cfg(unsigned mask, unsigned value);
+extern int rb4xx_cpld_read(unsigned char *rx_buf,
+ const unsigned char *verify_buf,
+ unsigned cnt);
+extern int rb4xx_cpld_read_from(unsigned addr,
+ unsigned char *rx_buf,
+ const unsigned char *verify_buf,
+ unsigned cnt);
+extern int rb4xx_cpld_write(const unsigned char *buf, unsigned count);