diff options
| author | Shawn Guo <shawn.guo@freescale.com> | 2011-03-03 22:13:38 +0800 |
|---|---|---|
| committer | Sascha Hauer <s.hauer@pengutronix.de> | 2011-03-08 13:24:11 +0100 |
| commit | acc9cdca62e596ca77e41e24a9d2c020a461bd99 (patch) | |
| tree | 6a2006664fba2c8e3f4fd9cb7caae17db4f62a57 /arch | |
| parent | 208277f74e449fca082c1895086bd44c159efba5 (diff) | |
ARM: mxs/mx28evk: add flexcan devices
Signed-off-by: Shawn Guo <shawn.guo@freescale.com>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
Diffstat (limited to 'arch')
| -rw-r--r-- | arch/arm/mach-mxs/Kconfig | 1 | ||||
| -rw-r--r-- | arch/arm/mach-mxs/mach-mx28evk.c | 55 |
2 files changed, 56 insertions, 0 deletions
diff --git a/arch/arm/mach-mxs/Kconfig b/arch/arm/mach-mxs/Kconfig index 989c08c6dd93..5ea676af8608 100644 --- a/arch/arm/mach-mxs/Kconfig +++ b/arch/arm/mach-mxs/Kconfig @@ -34,6 +34,7 @@ config MACH_MX28EVK select MXS_HAVE_AMBA_DUART select MXS_HAVE_PLATFORM_AUART select MXS_HAVE_PLATFORM_FEC + select MXS_HAVE_PLATFORM_FLEXCAN select MXS_OCOTP default y help diff --git a/arch/arm/mach-mxs/mach-mx28evk.c b/arch/arm/mach-mxs/mach-mx28evk.c index 987e3d54280c..8bb221754e4e 100644 --- a/arch/arm/mach-mxs/mach-mx28evk.c +++ b/arch/arm/mach-mxs/mach-mx28evk.c @@ -28,6 +28,7 @@ #include "devices-mx28.h" #include "gpio.h" +#define MX28EVK_FLEXCAN_SWITCH MXS_GPIO_NR(2, 13) #define MX28EVK_FEC_PHY_POWER MXS_GPIO_NR(2, 15) #define MX28EVK_FEC_PHY_RESET MXS_GPIO_NR(4, 13) @@ -69,6 +70,15 @@ static const iomux_cfg_t mx28evk_pads[] __initconst = { MX28_PAD_SSP1_DATA3__GPIO_2_15 | MXS_PAD_CTRL, /* phy reset line */ MX28_PAD_ENET0_RX_CLK__GPIO_4_13 | MXS_PAD_CTRL, + + /* flexcan0 */ + MX28_PAD_GPMI_RDY2__CAN0_TX, + MX28_PAD_GPMI_RDY3__CAN0_RX, + /* flexcan1 */ + MX28_PAD_GPMI_CE2N__CAN1_TX, + MX28_PAD_GPMI_CE3N__CAN1_RX, + /* transceiver power control */ + MX28_PAD_SSP1_CMD__GPIO_2_13, }; /* fec */ @@ -152,8 +162,44 @@ error: return -ETIMEDOUT; } +/* + * MX28EVK_FLEXCAN_SWITCH is shared between both flexcan controllers + */ +static int flexcan0_en, flexcan1_en; + +static void mx28evk_flexcan_switch(void) +{ + if (flexcan0_en || flexcan1_en) + gpio_set_value(MX28EVK_FLEXCAN_SWITCH, 1); + else + gpio_set_value(MX28EVK_FLEXCAN_SWITCH, 0); +} + +static void mx28evk_flexcan0_switch(int enable) +{ + flexcan0_en = enable; + mx28evk_flexcan_switch(); +} + +static void mx28evk_flexcan1_switch(int enable) +{ + flexcan1_en = enable; + mx28evk_flexcan_switch(); +} + +static const struct flexcan_platform_data + mx28evk_flexcan_pdata[] __initconst = { + { + .transceiver_switch = mx28evk_flexcan0_switch, + }, { + .transceiver_switch = mx28evk_flexcan1_switch, + } +}; + static void __init mx28evk_init(void) { + int ret; + mxs_iomux_setup_multiple_pads(mx28evk_pads, ARRAY_SIZE(mx28evk_pads)); mx28_add_duart(); @@ -166,6 +212,15 @@ static void __init mx28evk_init(void) mx28evk_fec_reset(); mx28_add_fec(0, &mx28_fec_pdata[0]); mx28_add_fec(1, &mx28_fec_pdata[1]); + + ret = gpio_request_one(MX28EVK_FLEXCAN_SWITCH, GPIOF_DIR_OUT, + "flexcan-switch"); + if (ret) { + pr_err("failed to request gpio flexcan-switch: %d\n", ret); + } else { + mx28_add_flexcan(0, &mx28evk_flexcan_pdata[0]); + mx28_add_flexcan(1, &mx28evk_flexcan_pdata[1]); + } } static void __init mx28evk_timer_init(void) |