diff options
| -rw-r--r-- | arch/arm/configs/orion5x_defconfig | 2 | ||||
| -rw-r--r-- | arch/arm/mach-orion5x/Kconfig | 1 | ||||
| -rw-r--r-- | arch/arm/mach-orion5x/ts78xx-fpga.h | 27 | ||||
| -rw-r--r-- | arch/arm/mach-orion5x/ts78xx-setup.c | 310 |
4 files changed, 231 insertions, 109 deletions
diff --git a/arch/arm/configs/orion5x_defconfig b/arch/arm/configs/orion5x_defconfig index a8ee6984a09e..a34ea6b2cc51 100644 --- a/arch/arm/configs/orion5x_defconfig +++ b/arch/arm/configs/orion5x_defconfig @@ -1177,7 +1177,7 @@ CONFIG_RTC_DRV_S35390A=y # CONFIG_RTC_DRV_DS1553 is not set # CONFIG_RTC_DRV_DS1742 is not set # CONFIG_RTC_DRV_STK17TA8 is not set -# CONFIG_RTC_DRV_M48T86 is not set +CONFIG_RTC_DRV_M48T86=y # CONFIG_RTC_DRV_M48T59 is not set # CONFIG_RTC_DRV_V3020 is not set diff --git a/arch/arm/mach-orion5x/Kconfig b/arch/arm/mach-orion5x/Kconfig index f59a8d0e0824..2c7035d8dcbf 100644 --- a/arch/arm/mach-orion5x/Kconfig +++ b/arch/arm/mach-orion5x/Kconfig @@ -71,6 +71,7 @@ config MACH_WRT350N_V2 config MACH_TS78XX bool "Technologic Systems TS-78xx" + select PM help Say 'Y' here if you want your kernel to support the Technologic Systems TS-78xx platform. diff --git a/arch/arm/mach-orion5x/ts78xx-fpga.h b/arch/arm/mach-orion5x/ts78xx-fpga.h new file mode 100644 index 000000000000..0b8e30faff14 --- /dev/null +++ b/arch/arm/mach-orion5x/ts78xx-fpga.h @@ -0,0 +1,27 @@ +#define FPGAID(_magic, _rev) ((_magic << 8) + _rev) + +/* + * get yer id's from http://ts78xx.digriz.org.uk/ + * do *not* make up your own or 'borrow' any! + */ +enum fpga_ids { + /* Technologic Systems */ + TS7800_REV_B = FPGAID(0x00b480, 0x03), +}; + +struct fpga_device { + unsigned present:1; + unsigned init:1; +}; + +struct fpga_devices { + /* Technologic Systems */ + struct fpga_device ts_rtc; +}; + +struct ts78xx_fpga_data { + unsigned int id; + int state; + + struct fpga_devices supports; +}; diff --git a/arch/arm/mach-orion5x/ts78xx-setup.c b/arch/arm/mach-orion5x/ts78xx-setup.c index 1368e9fd1a06..baa25d0fd5c9 100644 --- a/arch/arm/mach-orion5x/ts78xx-setup.c +++ b/arch/arm/mach-orion5x/ts78xx-setup.c @@ -10,8 +10,8 @@ #include <linux/kernel.h> #include <linux/init.h> +#include <linux/sysfs.h> #include <linux/platform_device.h> -#include <linux/mtd/physmap.h> #include <linux/mv643xx_eth.h> #include <linux/ata_platform.h> #include <linux/m48t86.h> @@ -21,6 +21,7 @@ #include <mach/orion5x.h> #include "common.h" #include "mpp.h" +#include "ts78xx-fpga.h" /***************************************************************************** * TS-78xx Info @@ -33,18 +34,11 @@ #define TS78XX_FPGA_REGS_VIRT_BASE 0xff900000 #define TS78XX_FPGA_REGS_SIZE SZ_1M -#define TS78XX_FPGA_REGS_SYSCON_ID (TS78XX_FPGA_REGS_VIRT_BASE | 0x000) -#define TS78XX_FPGA_REGS_SYSCON_LCDI (TS78XX_FPGA_REGS_VIRT_BASE | 0x004) -#define TS78XX_FPGA_REGS_SYSCON_LCDO (TS78XX_FPGA_REGS_VIRT_BASE | 0x008) - -#define TS78XX_FPGA_REGS_RTC_CTRL (TS78XX_FPGA_REGS_VIRT_BASE | 0x808) -#define TS78XX_FPGA_REGS_RTC_DATA (TS78XX_FPGA_REGS_VIRT_BASE | 0x80c) - -/* - * 512kB NOR flash Device - */ -#define TS78XX_NOR_BOOT_BASE 0xff800000 -#define TS78XX_NOR_BOOT_SIZE SZ_512K +static struct ts78xx_fpga_data ts78xx_fpga = { + .id = 0, + .state = 1, +/* .supports = ... - populated by ts78xx_fpga_supports() */ +}; /***************************************************************************** * I/O Address Mapping @@ -65,73 +59,48 @@ void __init ts78xx_map_io(void) } /***************************************************************************** - * 512kB NOR Boot Flash - the chip is a M25P40 + * Ethernet ****************************************************************************/ -static struct mtd_partition ts78xx_nor_boot_flash_resources[] = { - { - .name = "ts-bootrom", - .offset = 0, - /* only the first 256kB is used */ - .size = SZ_256K, - .mask_flags = MTD_WRITEABLE, - }, -}; - -static struct physmap_flash_data ts78xx_nor_boot_flash_data = { - .width = 1, - .parts = ts78xx_nor_boot_flash_resources, - .nr_parts = ARRAY_SIZE(ts78xx_nor_boot_flash_resources), -}; - -static struct resource ts78xx_nor_boot_flash_resource = { - .flags = IORESOURCE_MEM, - .start = TS78XX_NOR_BOOT_BASE, - .end = TS78XX_NOR_BOOT_BASE + TS78XX_NOR_BOOT_SIZE - 1, -}; - -static struct platform_device ts78xx_nor_boot_flash = { - .name = "physmap-flash", - .id = -1, - .dev = { - .platform_data = &ts78xx_nor_boot_flash_data, - }, - .num_resources = 1, - .resource = &ts78xx_nor_boot_flash_resource, +static struct mv643xx_eth_platform_data ts78xx_eth_data = { + .phy_addr = MV643XX_ETH_PHY_ADDR(0), }; /***************************************************************************** - * Ethernet + * SATA ****************************************************************************/ -static struct mv643xx_eth_platform_data ts78xx_eth_data = { - .phy_addr = MV643XX_ETH_PHY_ADDR(0), +static struct mv_sata_platform_data ts78xx_sata_data = { + .n_ports = 2, }; /***************************************************************************** * RTC M48T86 - nicked^Wborrowed from arch/arm/mach-ep93xx/ts72xx.c ****************************************************************************/ #ifdef CONFIG_RTC_DRV_M48T86 -static unsigned char ts78xx_rtc_readbyte(unsigned long addr) +#define TS_RTC_CTRL (TS78XX_FPGA_REGS_VIRT_BASE | 0x808) +#define TS_RTC_DATA (TS78XX_FPGA_REGS_VIRT_BASE | 0x80c) + +static unsigned char ts78xx_ts_rtc_readbyte(unsigned long addr) { - writeb(addr, TS78XX_FPGA_REGS_RTC_CTRL); - return readb(TS78XX_FPGA_REGS_RTC_DATA); + writeb(addr, TS_RTC_CTRL); + return readb(TS_RTC_DATA); } -static void ts78xx_rtc_writebyte(unsigned char value, unsigned long addr) +static void ts78xx_ts_rtc_writebyte(unsigned char value, unsigned long addr) { - writeb(addr, TS78XX_FPGA_REGS_RTC_CTRL); - writeb(value, TS78XX_FPGA_REGS_RTC_DATA); + writeb(addr, TS_RTC_CTRL); + writeb(value, TS_RTC_DATA); } -static struct m48t86_ops ts78xx_rtc_ops = { - .readbyte = ts78xx_rtc_readbyte, - .writebyte = ts78xx_rtc_writebyte, +static struct m48t86_ops ts78xx_ts_rtc_ops = { + .readbyte = ts78xx_ts_rtc_readbyte, + .writebyte = ts78xx_ts_rtc_writebyte, }; -static struct platform_device ts78xx_rtc_device = { +static struct platform_device ts78xx_ts_rtc_device = { .name = "rtc-m48t86", .id = -1, .dev = { - .platform_data = &ts78xx_rtc_ops, + .platform_data = &ts78xx_ts_rtc_ops, }, .num_resources = 0, }; @@ -146,59 +115,185 @@ static struct platform_device ts78xx_rtc_device = { * TODO: track down a guinea pig without an RTC to see if we can work out a * better RTC detection routine */ -static int __init ts78xx_rtc_init(void) +static int ts78xx_ts_rtc_load(void) { unsigned char tmp_rtc0, tmp_rtc1; - tmp_rtc0 = ts78xx_rtc_readbyte(126); - tmp_rtc1 = ts78xx_rtc_readbyte(127); - - ts78xx_rtc_writebyte(0x00, 126); - ts78xx_rtc_writebyte(0x55, 127); - if (ts78xx_rtc_readbyte(127) == 0x55) { - ts78xx_rtc_writebyte(0xaa, 127); - if (ts78xx_rtc_readbyte(127) == 0xaa - && ts78xx_rtc_readbyte(126) == 0x00) { - ts78xx_rtc_writebyte(tmp_rtc0, 126); - ts78xx_rtc_writebyte(tmp_rtc1, 127); - platform_device_register(&ts78xx_rtc_device); - return 1; + tmp_rtc0 = ts78xx_ts_rtc_readbyte(126); + tmp_rtc1 = ts78xx_ts_rtc_readbyte(127); + + ts78xx_ts_rtc_writebyte(0x00, 126); + ts78xx_ts_rtc_writebyte(0x55, 127); + if (ts78xx_ts_rtc_readbyte(127) == 0x55) { + ts78xx_ts_rtc_writebyte(0xaa, 127); + if (ts78xx_ts_rtc_readbyte(127) == 0xaa + && ts78xx_ts_rtc_readbyte(126) == 0x00) { + ts78xx_ts_rtc_writebyte(tmp_rtc0, 126); + ts78xx_ts_rtc_writebyte(tmp_rtc1, 127); + if (ts78xx_fpga.supports.ts_rtc.init == 0) { + ts78xx_fpga.supports.ts_rtc.init = 1; + platform_device_register(&ts78xx_ts_rtc_device); + } else + platform_device_add(&ts78xx_ts_rtc_device); + return 0; } } - return 0; + ts78xx_fpga.supports.ts_rtc.present = 0; + return -ENODEV; }; + +static void ts78xx_ts_rtc_unload(void) +{ + platform_device_del(&ts78xx_ts_rtc_device); +} #else -static int __init ts78xx_rtc_init(void) +static int ts78xx_ts_rtc_load(void) { return 0; } + +static void ts78xx_ts_rtc_unload(void) +{ +} #endif /***************************************************************************** - * SATA + * FPGA 'hotplug' support code ****************************************************************************/ -static struct mv_sata_platform_data ts78xx_sata_data = { - .n_ports = 2, +static void ts78xx_fpga_devices_zero_init(void) +{ + ts78xx_fpga.supports.ts_rtc.init = 0; +} + +static void ts78xx_fpga_supports(void) +{ + /* TODO: put this 'table' into ts78xx-fpga.h */ + switch (ts78xx_fpga.id) { + case TS7800_REV_B: + ts78xx_fpga.supports.ts_rtc.present = 1; + break; + default: + ts78xx_fpga.supports.ts_rtc.present = 0; + } +} + +static int ts78xx_fpga_load_devices(void) +{ + int tmp, ret = 0; + + if (ts78xx_fpga.supports.ts_rtc.present == 1) { + tmp = ts78xx_ts_rtc_load(); + if (tmp) + printk(KERN_INFO "TS-78xx RTC not detected or enabled\n"); + ret |= tmp; + } + + return ret; +} + +static int ts78xx_fpga_unload_devices(void) +{ + int ret = 0; + + if (ts78xx_fpga.supports.ts_rtc.present == 1) + ts78xx_ts_rtc_unload(); + + return ret; +} + +static int ts78xx_fpga_load(void) +{ + ts78xx_fpga.id = readl(TS78XX_FPGA_REGS_VIRT_BASE); + + printk(KERN_INFO "TS-78xx FPGA: magic=0x%.6x, rev=0x%.2x\n", + (ts78xx_fpga.id >> 8) & 0xffffff, + ts78xx_fpga.id & 0xff); + + ts78xx_fpga_supports(); + + if (ts78xx_fpga_load_devices()) { + ts78xx_fpga.state = -1; + return -EBUSY; + } + + return 0; }; -/***************************************************************************** - * print some information regarding the board - ****************************************************************************/ -static void __init ts78xx_print_board_id(void) +static int ts78xx_fpga_unload(void) { - unsigned int board_info; - - board_info = readl(TS78XX_FPGA_REGS_SYSCON_ID); - printk(KERN_INFO "TS-78xx Info: FPGA rev=%.2x, Board Magic=%.6x, ", - board_info & 0xff, - (board_info >> 8) & 0xffffff); - board_info = readl(TS78XX_FPGA_REGS_SYSCON_LCDI); - printk("JP1=%d, JP2=%d\n", - (board_info >> 30) & 0x1, - (board_info >> 31) & 0x1); + unsigned int fpga_id; + + fpga_id = readl(TS78XX_FPGA_REGS_VIRT_BASE); + + /* + * There does not seem to be a feasible way to block access to the GPIO + * pins from userspace (/dev/mem). This if clause should hopefully warn + * those foolish enough not to follow 'policy' :) + * + * UrJTAG SVN since r1381 can be used to reprogram the FPGA + */ + if (ts78xx_fpga.id != fpga_id) { + printk(KERN_ERR "TS-78xx FPGA: magic/rev mismatch\n" + "TS-78xx FPGA: was 0x%.6x/%.2x but now 0x%.6x/%.2x\n", + (ts78xx_fpga.id >> 8) & 0xffffff, ts78xx_fpga.id & 0xff, + (fpga_id >> 8) & 0xffffff, fpga_id & 0xff); + ts78xx_fpga.state = -1; + return -EBUSY; + } + + if (ts78xx_fpga_unload_devices()) { + ts78xx_fpga.state = -1; + return -EBUSY; + } + + return 0; }; +static ssize_t ts78xx_fpga_show(struct kobject *kobj, + struct kobj_attribute *attr, char *buf) +{ + if (ts78xx_fpga.state < 0) + return sprintf(buf, "borked\n"); + + return sprintf(buf, "%s\n", (ts78xx_fpga.state) ? "online" : "offline"); +} + +static ssize_t ts78xx_fpga_store(struct kobject *kobj, + struct kobj_attribute *attr, const char *buf, size_t n) +{ + int value, ret; + + if (ts78xx_fpga.state < 0) { + printk(KERN_ERR "TS-78xx FPGA: borked, you must powercycle asap\n"); + return -EBUSY; + } + + if (strncmp(buf, "online", sizeof("online") - 1) == 0) + value = 1; + else if (strncmp(buf, "offline", sizeof("offline") - 1) == 0) + value = 0; + else { + printk(KERN_ERR "ts78xx_fpga_store: Invalid value\n"); + return -EINVAL; + } + + if (ts78xx_fpga.state == value) + return n; + + ret = (ts78xx_fpga.state == 0) + ? ts78xx_fpga_load() + : ts78xx_fpga_unload(); + + if (!(ret < 0)) + ts78xx_fpga.state = value; + + return n; +} + +static struct kobj_attribute ts78xx_fpga_attr = + __ATTR(ts78xx_fpga, 0644, ts78xx_fpga_show, ts78xx_fpga_store); + /***************************************************************************** * General Setup ****************************************************************************/ @@ -223,30 +318,29 @@ static struct orion5x_mpp_mode ts78xx_mpp_modes[] __initdata = { { 17, MPP_UART }, { 18, MPP_UART }, { 19, MPP_UART }, + /* + * MPP[20] PCI Clock Out 1 + * MPP[21] PCI Clock Out 0 + * MPP[22] Unused + * MPP[23] Unused + * MPP[24] Unused + * MPP[25] Unused + */ { -1 }, }; static void __init ts78xx_init(void) { + int ret; + /* * Setup basic Orion functions. Need to be called early. */ orion5x_init(); - ts78xx_print_board_id(); - orion5x_mpp_conf(ts78xx_mpp_modes); /* - * MPP[20] PCI Clock Out 1 - * MPP[21] PCI Clock Out 0 - * MPP[22] Unused - * MPP[23] Unused - * MPP[24] Unused - * MPP[25] Unused - */ - - /* * Configure peripherals. */ orion5x_ehci0_init(); @@ -257,12 +351,12 @@ static void __init ts78xx_init(void) orion5x_uart1_init(); orion5x_xor_init(); - orion5x_setup_dev_boot_win(TS78XX_NOR_BOOT_BASE, - TS78XX_NOR_BOOT_SIZE); - platform_device_register(&ts78xx_nor_boot_flash); - - if (!ts78xx_rtc_init()) - printk(KERN_INFO "TS-78xx RTC not detected or enabled\n"); + /* FPGA init */ + ts78xx_fpga_devices_zero_init(); + ret = ts78xx_fpga_load(); + ret = sysfs_create_file(power_kobj, &ts78xx_fpga_attr.attr); + if (ret) + printk(KERN_ERR "sysfs_create_file failed: %d\n", ret); } MACHINE_START(TS78XX, "Technologic Systems TS-78xx SBC") |