diff options
author | David S. Miller <davem@davemloft.net> | 2009-06-15 03:02:23 -0700 |
---|---|---|
committer | David S. Miller <davem@davemloft.net> | 2009-06-15 03:02:23 -0700 |
commit | 9cbc1cb8cd46ce1f7645b9de249b2ce8460129bb (patch) | |
tree | 8d104ec2a459346b99413b0b77421ca7b9936c1a /arch/arm/mach-orion5x/ts78xx-setup.c | |
parent | ca44d6e60f9de26281fda203f58b570e1748c015 (diff) | |
parent | 45e3e1935e2857c54783291107d33323b3ef33c8 (diff) |
Merge branch 'master' of master.kernel.org:/pub/scm/linux/kernel/git/torvalds/linux-2.6
Conflicts:
Documentation/feature-removal-schedule.txt
drivers/scsi/fcoe/fcoe.c
net/core/drop_monitor.c
net/core/net-traces.c
Diffstat (limited to 'arch/arm/mach-orion5x/ts78xx-setup.c')
-rw-r--r-- | arch/arm/mach-orion5x/ts78xx-setup.c | 58 |
1 files changed, 58 insertions, 0 deletions
diff --git a/arch/arm/mach-orion5x/ts78xx-setup.c b/arch/arm/mach-orion5x/ts78xx-setup.c index 9a6b397f972d..5041d1bc26b1 100644 --- a/arch/arm/mach-orion5x/ts78xx-setup.c +++ b/arch/arm/mach-orion5x/ts78xx-setup.c @@ -17,6 +17,7 @@ #include <linux/m48t86.h> #include <linux/mtd/nand.h> #include <linux/mtd/partitions.h> +#include <linux/timeriomem-rng.h> #include <asm/mach-types.h> #include <asm/mach/arch.h> #include <asm/mach/map.h> @@ -270,12 +271,57 @@ static void ts78xx_ts_nand_unload(void) } /***************************************************************************** + * HW RNG + ****************************************************************************/ +#define TS_RNG_DATA (TS78XX_FPGA_REGS_PHYS_BASE | 0x044) + +static struct resource ts78xx_ts_rng_resource = { + .flags = IORESOURCE_MEM, + .start = TS_RNG_DATA, + .end = TS_RNG_DATA + 4 - 1, +}; + +static struct timeriomem_rng_data ts78xx_ts_rng_data = { + .period = 1000000, /* one second */ +}; + +static struct platform_device ts78xx_ts_rng_device = { + .name = "timeriomem_rng", + .id = -1, + .dev = { + .platform_data = &ts78xx_ts_rng_data, + }, + .resource = &ts78xx_ts_rng_resource, + .num_resources = 1, +}; + +static int ts78xx_ts_rng_load(void) +{ + int rc; + + if (ts78xx_fpga.supports.ts_rng.init == 0) { + rc = platform_device_register(&ts78xx_ts_rng_device); + if (!rc) + ts78xx_fpga.supports.ts_rng.init = 1; + } else + rc = platform_device_add(&ts78xx_ts_rng_device); + + return rc; +}; + +static void ts78xx_ts_rng_unload(void) +{ + platform_device_del(&ts78xx_ts_rng_device); +} + +/***************************************************************************** * FPGA 'hotplug' support code ****************************************************************************/ static void ts78xx_fpga_devices_zero_init(void) { ts78xx_fpga.supports.ts_rtc.init = 0; ts78xx_fpga.supports.ts_nand.init = 0; + ts78xx_fpga.supports.ts_rng.init = 0; } static void ts78xx_fpga_supports(void) @@ -289,10 +335,12 @@ static void ts78xx_fpga_supports(void) case TS7800_REV_5: ts78xx_fpga.supports.ts_rtc.present = 1; ts78xx_fpga.supports.ts_nand.present = 1; + ts78xx_fpga.supports.ts_rng.present = 1; break; default: ts78xx_fpga.supports.ts_rtc.present = 0; ts78xx_fpga.supports.ts_nand.present = 0; + ts78xx_fpga.supports.ts_rng.present = 0; } } @@ -316,6 +364,14 @@ static int ts78xx_fpga_load_devices(void) } ret |= tmp; } + if (ts78xx_fpga.supports.ts_rng.present == 1) { + tmp = ts78xx_ts_rng_load(); + if (tmp) { + printk(KERN_INFO "TS-78xx: RNG not registered\n"); + ts78xx_fpga.supports.ts_rng.present = 0; + } + ret |= tmp; + } return ret; } @@ -328,6 +384,8 @@ static int ts78xx_fpga_unload_devices(void) ts78xx_ts_rtc_unload(); if (ts78xx_fpga.supports.ts_nand.present == 1) ts78xx_ts_nand_unload(); + if (ts78xx_fpga.supports.ts_rng.present == 1) + ts78xx_ts_rng_unload(); return ret; } |