R-Car Gen4 has channel specific interface mode bit for setting CAN-FD or
Classical CAN mode whereas on R-Car Gen3 it is global. Add a
ch_interface_mode variable to struct rcar_canfd_hw_info to handle this
difference.
Reviewed-by: Geert Uytterhoeven <geert+renesas@xxxxxxxxx>
Reviewed-by: Vincent Mailhol <mailhol.vincent@xxxxxxxxxx>
Signed-off-by: Biju Das <biju.das.jz@xxxxxxxxxxxxxx>
---
v8->v9:
* No change.
v7->v8:
* Updated {rzg2l,car_gen3_hw_info} with ch_interface_mode = 0.
* Collected tag.
v6->v7:
* No change.
v5->v6:
* No change.
v4->v5:
* Collected tag.
v3->v4:
* No change.
v3:
* New patch.
---
drivers/net/can/rcar/rcar_canfd.c | 6 +++++-
1 file changed, 5 insertions(+), 1 deletion(-)
diff --git a/drivers/net/can/rcar/rcar_canfd.c b/drivers/net/can/rcar/rcar_canfd.c
index d8380f38cdde..25c00abee9cc 100644
--- a/drivers/net/can/rcar/rcar_canfd.c
+++ b/drivers/net/can/rcar/rcar_canfd.c
@@ -516,6 +516,7 @@ struct rcar_canfd_hw_info {
/* hardware features */
unsigned shared_global_irqs:1; /* Has shared global irqs */
unsigned multi_channel_irqs:1; /* Has multiple channel irqs */
+ unsigned ch_interface_mode:1; /* Has channel interface mode */
};
/* Channel priv data */
@@ -619,6 +620,7 @@ static const struct rcar_canfd_hw_info rcar_gen3_hw_info = {
.max_channels = 2,
.postdiv = 2,
.shared_global_irqs = 1,
+ .ch_interface_mode = 0,
};
static const struct rcar_canfd_hw_info rcar_gen4_hw_info = {
@@ -630,6 +632,7 @@ static const struct rcar_canfd_hw_info rcar_gen4_hw_info = {
.max_channels = 8,
.postdiv = 2,
.shared_global_irqs = 1,
+ .ch_interface_mode = 1,
};
static const struct rcar_canfd_hw_info rzg2l_hw_info = {
@@ -641,6 +644,7 @@ static const struct rcar_canfd_hw_info rzg2l_hw_info = {
.max_channels = 2,
.postdiv = 1,
.multi_channel_irqs = 1,
+ .ch_interface_mode = 0,
};
/* Helper functions */
@@ -733,7 +737,7 @@ static void rcar_canfd_setrnc(struct rcar_canfd_global *gpriv, unsigned int ch,
static void rcar_canfd_set_mode(struct rcar_canfd_global *gpriv)
{
- if (is_gen4(gpriv)) {
+ if (gpriv->info->ch_interface_mode) {
u32 ch, val = gpriv->fdmode ? RCANFD_GEN4_FDCFG_FDOE
: RCANFD_GEN4_FDCFG_CLOE;
--
2.43.0
