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cns3xxx: add PPS support for laguna

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Many Laguna products have on-board GPS with Pulse-per-second (PPS)
support.  This patch adds kernel support (statically) and adds
the platform data in laguna board support.

Signed-off-by: Tim Harvey <tharvey@gateworks.com>

SVN-Revision: 34115
This commit is contained in:
Imre Kaloz
2012-11-08 05:42:31 +00:00
parent efcdc21824
commit 0da0dc0f2b
2 changed files with 27 additions and 0 deletions
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7
target/linux/cns3xxx/config-3.3
View File

@@ -131,6 +131,7 @@ CONFIG_NEED_DMA_MAP_STATE=y
CONFIG_NET_VENDOR_CAVIUM=y CONFIG_NET_VENDOR_CAVIUM=y
CONFIG_NLS=y CONFIG_NLS=y
CONFIG_NR_CPUS=2 CONFIG_NR_CPUS=2
CONFIG_NTP_PPS=y
CONFIG_OUTER_CACHE=y CONFIG_OUTER_CACHE=y
CONFIG_OUTER_CACHE_SYNC=y CONFIG_OUTER_CACHE_SYNC=y
CONFIG_PAGEFLAGS_EXTENDED=y CONFIG_PAGEFLAGS_EXTENDED=y
@@ -143,7 +144,13 @@ CONFIG_PHYLIB=y
CONFIG_PL310_ERRATA_588369=y CONFIG_PL310_ERRATA_588369=y
CONFIG_PL310_ERRATA_727915=y CONFIG_PL310_ERRATA_727915=y
CONFIG_PL310_ERRATA_769419=y CONFIG_PL310_ERRATA_769419=y
CONFIG_PPS=y
CONFIG_PPS_CLIENT_GPIO=y
# CONFIG_PPS_CLIENT_KTIMER is not set
# CONFIG_PPS_CLIENT_LDISC is not set
# CONFIG_PPS_DEBUG is not set
# CONFIG_PREEMPT_RCU is not set # CONFIG_PREEMPT_RCU is not set
# CONFIG_PTP_1588_CLOCK is not set
CONFIG_RAID_ATTRS=y CONFIG_RAID_ATTRS=y
CONFIG_RFS_ACCEL=y CONFIG_RFS_ACCEL=y
CONFIG_RPS=y CONFIG_RPS=y

20
target/linux/cns3xxx/files/arch/arm/mach-cns3xxx/laguna.c
View File

@@ -36,6 +36,7 @@
#include <linux/spi/spi.h> #include <linux/spi/spi.h>
#include <linux/spi/flash.h> #include <linux/spi/flash.h>
#include <linux/if_ether.h> #include <linux/if_ether.h>
#include <linux/pps-gpio.h>
#include <asm/setup.h> #include <asm/setup.h>
#include <asm/mach-types.h> #include <asm/mach-types.h>
#include <asm/mach/arch.h> #include <asm/mach/arch.h>
@@ -580,6 +581,22 @@ static struct platform_device laguna_watchdog = {
.resource = laguna_watchdog_resources, .resource = laguna_watchdog_resources,
}; };
/*
* GPS PPS
*/
static struct pps_gpio_platform_data laguna_pps_data = {
.gpio_pin = 0,
.gpio_label = "GPS_PPS",
.assert_falling_edge = 0,
.capture_clear = 0,
};
static struct platform_device laguna_pps_device = {
.name = "pps-gpio",
.id = -1,
.dev.platform_data = &laguna_pps_data,
};
/* /*
* GPIO * GPIO
*/ */
@@ -869,6 +886,9 @@ static int __init laguna_model_setup(void)
(laguna_info.config_bitmap & SPI1_LOAD)) (laguna_info.config_bitmap & SPI1_LOAD))
platform_device_register(&laguna_spi_controller); platform_device_register(&laguna_spi_controller);
if (laguna_info.config2_bitmap & GPS_LOAD)
platform_device_register(&laguna_pps_device);
/* /*
* Do any model specific setup not known by the bitmap by matching * Do any model specific setup not known by the bitmap by matching
* the first 6 characters of the model name * the first 6 characters of the model name