at86rf230: rework reset to trx_off state change

Signed-off-by: Alexander Aring <alex.aring@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

1 files changed, 15 insertions, 1 deletions

diff --git a/drivers/net/ieee802154/at86rf230.c b/drivers/net/ieee802154/at86rf230.c
index 265fea8a6030..a64914a39866 100644
--- a/drivers/net/ieee802154/at86rf230.c
+++ b/drivers/net/ieee802154/at86rf230.c
@@ -42,6 +42,7 @@ struct at86rf230_local;
  * All timings are in us.
  */
 struct at86rf2xx_chip_data {
+        u16 t_reset_to_off;
         u16 t_off_to_aack;
         u16 t_off_to_tx_on;
         u16 t_frame;
@@ -582,6 +583,16 @@ at86rf230_async_state_delay(void *context)
                         break;
                 }
                 break;
+        /* Default value, means RESET state */
+        case STATE_P_ON:
+                switch (ctx->to_state) {
+                case STATE_TRX_OFF:
+                        usleep_range(c->t_reset_to_off, c->t_reset_to_off + 10);
+                        goto change;
+                default:
+                        break;
+                }
+                break;
         default:
                 break;
         }
@@ -1236,6 +1247,7 @@ static struct ieee802154_ops at86rf230_ops = {
 };
 
 static struct at86rf2xx_chip_data at86rf233_data = {
+        .t_reset_to_off = 26,
         .t_off_to_aack = 80,
         .t_off_to_tx_on = 80,
         .t_frame = 4096,
@@ -1249,6 +1261,7 @@ static struct at86rf2xx_chip_data at86rf233_data = {
 };
 
 static struct at86rf2xx_chip_data at86rf231_data = {
+        .t_reset_to_off = 37,
         .t_off_to_aack = 110,
         .t_off_to_tx_on = 110,
         .t_frame = 4096,
@@ -1262,6 +1275,7 @@ static struct at86rf2xx_chip_data at86rf231_data = {
 };
 
 static struct at86rf2xx_chip_data at86rf212_data = {
+        .t_reset_to_off = 26,
         .t_off_to_aack = 200,
         .t_off_to_tx_on = 200,
         .t_frame = 4096,
@@ -1280,7 +1294,7 @@ static int at86rf230_hw_init(struct at86rf230_local *lp)
         unsigned int dvdd;
         u8 csma_seed[2];
 
-        rc = at86rf230_write_subreg(lp, SR_TRX_CMD, STATE_FORCE_TRX_OFF);
+        rc = at86rf230_sync_state_change(lp, STATE_FORCE_TRX_OFF);
         if (rc)
                 return rc;