iPod Classic: use PMU interrupts to detect accessories

- Speed auto detection is launched when an accessory is inserted,
  so the user doesn't need to modify settings to use accessories
  that operates at different speeds (or when the same accessory is
  unplugged and plugged again).

- UART controller is disabled when no accessory is inserted, not
  much powersave but everything counts.

Change-Id: If20c3617c2a87b6277fd7e0270031030c44fa953

1 files changed, 21 insertions, 17 deletions

diff --git a/firmware/target/arm/s5l8702/debug-s5l8702.c b/firmware/target/arm/s5l8702/debug-s5l8702.c
index 48a20a97c2..b274b5fc0a 100644
--- a/firmware/target/arm/s5l8702/debug-s5l8702.c
+++ b/firmware/target/arm/s5l8702/debug-s5l8702.c
@@ -138,22 +138,26 @@ bool dbg_hw_info(void)
         else if(state==2)
         {
             extern struct uartc_port ser_port;
-            int tx_stat, rx_stat, tx_speed, rx_speed;
-            char line_cfg[4];
-            int abr_stat;
-            uint32_t abr_cnt;
-            char *abrstatus[] = {"Idle", "Launched", "Counting", "Abnormal"};
-
-            uartc_port_get_line_info(&ser_port,
-                        &tx_stat, &rx_stat, &tx_speed, &rx_speed, line_cfg);
-            abr_stat = uartc_port_get_abr_info(&ser_port, &abr_cnt);
-
-            _DEBUG_PRINTF("UART %d:", ser_port.id);
-            line++;
-            _DEBUG_PRINTF("line: %s", line_cfg);
-            _DEBUG_PRINTF("Tx: %s, speed: %d", tx_stat ? "On":"Off", tx_speed);
-            _DEBUG_PRINTF("Rx: %s, speed: %d", rx_stat ? "On":"Off", rx_speed);
-            _DEBUG_PRINTF("ABR: %s, cnt: %u", abrstatus[abr_stat], abr_cnt);
+            bool opened = !!ser_port.uartc->port_l[ser_port.id];
+            _DEBUG_PRINTF("UART %d: %s", ser_port.id, opened ? "opened":"closed");
+            if (opened)
+            {
+                int tx_stat, rx_stat, tx_speed, rx_speed;
+                char line_cfg[4];
+                int abr_stat;
+                uint32_t abr_cnt;
+                char *abrstatus[] = {"Idle", "Launched", "Counting", "Abnormal"};
+
+                uartc_port_get_line_info(&ser_port,
+                            &tx_stat, &rx_stat, &tx_speed, &rx_speed, line_cfg);
+                abr_stat = uartc_port_get_abr_info(&ser_port, &abr_cnt);
+
+                line++;
+                _DEBUG_PRINTF("line: %s", line_cfg);
+                _DEBUG_PRINTF("Tx: %s, speed: %d", tx_stat ? "On":"Off", tx_speed);
+                _DEBUG_PRINTF("Rx: %s, speed: %d", rx_stat ? "On":"Off", rx_speed);
+                _DEBUG_PRINTF("ABR: %s, cnt: %u", abrstatus[abr_stat], abr_cnt);
+            }
             line++;
             _DEBUG_PRINTF("n_tx_bytes: %u", ser_port.n_tx_bytes);
             _DEBUG_PRINTF("n_rx_bytes: %u", ser_port.n_rx_bytes);
@@ -162,7 +166,7 @@ bool dbg_hw_info(void)
             _DEBUG_PRINTF("n_frame_err: %u", ser_port.n_frame_err);
             _DEBUG_PRINTF("n_break_detect: %u", ser_port.n_break_detect);
             _DEBUG_PRINTF("ABR n_abnormal: %u %u",
-                        ser_port.n_abnormal0, ser_port.n_abnormal1);
+                            ser_port.n_abnormal0, ser_port.n_abnormal1);
         }
 #endif
         else