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ARM: mxs/mx28evk: add flexcan devices 

Signed-off-by: Shawn Guo <shawn.guo@freescale.com>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
This commit is contained in:
Shawn Guo 2011-03-03 22:13:38 +08:00 committed by Sascha Hauer
parent 208277f74e
commit acc9cdca62
2 changed files with 56 additions and 0 deletions
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1
arch/arm/mach-mxs/Kconfig
View File

@ -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

55
arch/arm/mach-mxs/mach-mx28evk.c
View File

@ -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)