sven
/
can-utils
mirror of https://github.com/linux-can/can-utils.git
1
0
Fork 0
Code Issues Packages Projects Releases Wiki Activity

can-calc-bit-timing: add support for rcar_can 

Signed-off-by: Ramesh Shanmugasundaram <ramesh.shanmugasundaram@bp.renesas.com>
Signed-off-by: Marc Kleine-Budde <mkl@pengutronix.de>
pull/16/head
Ramesh Shanmugasundaram 2016-02-29 10:18:45 +00:00 committed by Marc Kleine-Budde
parent cda61171f1
commit c689803204
1 changed files with 36 additions and 1 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

37
can-calc-bit-timing.c
View File

@ -219,6 +219,27 @@ static void printf_btr_ti_hecc(struct can_bittiming *bt, int hdr)
}
}
#define RCAR_CAN_BCR_TSEG1(x) (((x) & 0x0f) << 20)
#define RCAR_CAN_BCR_BPR(x) (((x) & 0x3ff) << 8)
#define RCAR_CAN_BCR_SJW(x) (((x) & 0x3) << 4)
#define RCAR_CAN_BCR_TSEG2(x) ((x) & 0x07)
static void printf_btr_rcar_can(struct can_bittiming *bt, int hdr)
{
if (hdr) {
printf("%10s", "CiBCR");
} else {
uint32_t bcr;
bcr = RCAR_CAN_BCR_TSEG1(bt->phase_seg1 + bt->prop_seg - 1) |
RCAR_CAN_BCR_BPR(bt->brp - 1) |
RCAR_CAN_BCR_SJW(bt->sjw - 1) |
RCAR_CAN_BCR_TSEG2(bt->phase_seg2 - 1);
printf("0x%08x", bcr << 8);
}
}
static struct can_bittiming_const can_calc_consts[] = {
{
.name = "sja1000",
@ -472,7 +493,21 @@ static struct can_bittiming_const can_calc_consts[] = {
.ref_clk = 13000000,
.printf_btr = printf_btr_ti_hecc,
}
},
{
.name = "rcar_can",
.tseg1_min = 4,
.tseg1_max = 16,
.tseg2_min = 2,
.tseg2_max = 8,
.sjw_max = 4,
.brp_min = 1,
.brp_max = 1024,
.brp_inc = 1,
.ref_clk = 65000000,
.printf_btr = printf_btr_rcar_can,
},
};
static long common_bitrates[] = {