iPod Nano2G: add HAVE_SERIAL

Change-Id: I46dca69c6708d3e6189f66e70badf0a594bac00b

firmware/SOURCES

@@ -1582,6 +1582,11 @@ target/arm/s5l8700/ipodnano2g/nand-nano2g.c
 target/arm/s5l8700/ipodnano2g/pmu-nano2g.c
 target/arm/s5l8700/ipodnano2g/rtc-nano2g.c
 target/arm/s5l8700/usb-nano2g-6g.c
+#ifdef HAVE_SERIAL
+target/arm/uc870x.c
+target/arm/s5l8700/uart-s5l8701.c
+target/arm/s5l8700/ipodnano2g/serial-nano2g.c
+#endif
 #ifndef BOOTLOADER
 target/arm/s5l8700/ipodnano2g/audio-nano2g.c
 target/arm/s5l8700/ipodnano2g/piezo-nano2g.c

firmware/export/config/ipodnano2g.h

@@ -232,7 +232,9 @@
 /* Define this if you can switch on/off the accessory power supply */
 #define HAVE_ACCESSORY_SUPPLY
 //#define IPOD_ACCESSORY_PROTOCOL
-//#define HAVE_SERIAL
+#ifdef LOGF_SERIAL
+#define HAVE_SERIAL
+#endif
 
 /* Define this, if you can switch on/off the lineout */
 #define HAVE_LINEOUT_POWEROFF

firmware/target/arm/s5l8700/debug-s5l8700.c

@@ -32,6 +32,10 @@
 #include "pmu-target.h"
 #include "nand-target.h"
 #endif
+#ifdef HAVE_SERIAL
+#include "uart-target.h"
+#include "uc870x.h"
+#endif
 
 #define DEBUG_CANCEL BUTTON_MENU
 
@@ -49,7 +53,11 @@ bool dbg_hw_info(void)
     int i;
 #ifdef IPOD_NANO2G
     unsigned int state = 0;
+#ifdef UC870X_DEBUG
+    const unsigned int max_states=3;
+#else
     const unsigned int max_states=2;
+#endif
     int nand_bank_count;
     struct storage_info info;
     const struct nand_device_info_type *nand_devicetype[4];
@@ -123,6 +131,37 @@ bool dbg_hw_info(void)
             _DEBUG_PRINTF("backlight: %s", pmu_read(0x29) ? "on" : "off");
             _DEBUG_PRINTF("brightness value: %d", pmu_read(0x28));
         }
+#ifdef UC870X_DEBUG
+        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);
+            line++;
+            _DEBUG_PRINTF("n_tx_bytes: %u", ser_port.n_tx_bytes);
+            _DEBUG_PRINTF("n_rx_bytes: %u", ser_port.n_rx_bytes);
+            _DEBUG_PRINTF("n_ovr_err: %u", ser_port.n_ovr_err);
+            _DEBUG_PRINTF("n_parity_err: %u", ser_port.n_parity_err);
+            _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);
+        }
+#endif
         else
         {
             state=0;

firmware/target/arm/s5l8700/ipodnano2g/serial-nano2g.c

@@ -0,0 +1,96 @@
+/***************************************************************************
+ *             __________               __   ___.
+ *   Open      \______   \ ____   ____ |  | _\_ |__   _______  ___
+ *   Source     |       _//  _ \_/ ___\|  |/ /| __ \ /  _ \  \/  /
+ *   Jukebox    |    |   (  <_> )  \___|    < | \_\ (  <_> > <  <
+ *   Firmware   |____|_  /\____/ \___  >__|_ \|___  /\____/__/\_ \
+ *                     \/            \/     \/    \/            \/
+ * $Id$
+ *
+ * Copyright (C) 2014 by Cástor Muñoz
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License
+ * as published by the Free Software Foundation; either version 2
+ * of the License, or (at your option) any later version.
+ *
+ * This software is distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY
+ * KIND, either express or implied.
+ *
+ ****************************************************************************/
+#include <stdint.h>
+#include <stdbool.h>
+
+#include "config.h"
+#include "cpu.h"
+#include "system.h"
+#include "serial.h"
+
+#include "s5l8700.h"
+#include "uc870x.h"
+
+/* Define LOGF_ENABLE to enable logf output in this file */
+#define LOGF_ENABLE
+#include "logf.h"
+
+
+/* shall include serial HW configuracion for specific target */
+#define NANO2G_UART_CLK_HZ      24000000  /* external OSC0 ??? */
+
+/* This values below are valid with a UCLK of 24MHz */
+#define BRDATA_9600         (155)  /* 9615   */
+#define BRDATA_19200        (77)   /* 19231  */
+#define BRDATA_28800        (51)   /* 28846  */
+#define BRDATA_38400        (38)   /* 38462  */
+#define BRDATA_57600        (25)   /* 57692  */
+#define BRDATA_115200       (12)   /* 115385 */
+
+
+extern const struct uartc s5l8701_uartc0;
+
+struct uartc_port ser_port IDATA_ATTR =
+{
+    /* location */
+    .uartc = &s5l8701_uartc0,
+    .id = 0,
+
+    /* configuration */
+    .rx_trg = UFCON_RX_FIFO_TRG_4,
+    .tx_trg = UFCON_TX_FIFO_TRG_EMPTY,
+    .clksel = UCON_CLKSEL_ECLK,
+    .clkhz = NANO2G_UART_CLK_HZ,
+
+    /* interrupt callbacks */
+    .rx_cb = NULL,
+    .tx_cb = NULL,  /* polling */
+};
+
+/*
+ * serial driver API
+ */
+void serial_setup(void)
+{
+    uartc_port_open(&ser_port);
+
+    /* set a default configuration, Tx and Rx modes are
+       disabled when the port is initialized */
+    uartc_port_config(&ser_port, ULCON_DATA_BITS_8,
+                        ULCON_PARITY_NONE, ULCON_STOP_BITS_1);
+    uartc_port_set_bitrate_raw(&ser_port, BRDATA_115200);
+
+    /* enable Tx interrupt request or POLLING mode */
+    uartc_port_set_tx_mode(&ser_port, UCON_MODE_INTREQ);
+
+    logf("[%lu] "MODEL_NAME" port %d ready!",
+                (uint32_t)USEC_TIMER, ser_port.id);
+}
+
+int tx_rdy(void)
+{
+    return uartc_port_tx_ready(&ser_port) ? 1 : 0;
+}
+
+void tx_writec(unsigned char c)
+{
+    uartc_port_tx_byte(&ser_port, c);
+}