From eacd76cb80db12adcce74980e69d116911a8cde7 Mon Sep 17 00:00:00 2001
From: Szymon Dziok <b0hoon@o2.pl>
Date: Tue, 17 Jun 2014 23:13:15 +0000
Subject: Radio and radio recording for Samsung YH-920.

There is no simple method to detect radio through the 3-wire interface, so it's
not implemented for the YH-925 for now. YH-920 always has a radio.

Change-Id: Iea484d752915fcd40dbbbd7dbbf13e81aaf548db
---
 firmware/target/arm/samsung/fmradio-yh92x.c     | 120 ++++++++++++++++++++++++
 firmware/target/arm/samsung/power-yh82x_yh92x.c |  19 +++-
 2 files changed, 138 insertions(+), 1 deletion(-)
 create mode 100644 firmware/target/arm/samsung/fmradio-yh92x.c

(limited to 'firmware/target/arm/samsung')

diff --git a/firmware/target/arm/samsung/fmradio-yh92x.c b/firmware/target/arm/samsung/fmradio-yh92x.c
new file mode 100644
index 0000000000..4637aca287
--- /dev/null
+++ b/firmware/target/arm/samsung/fmradio-yh92x.c
@@ -0,0 +1,120 @@
+/***************************************************************************
+ *             __________               __   ___.
+ *   Open      \______   \ ____   ____ |  | _\_ |__   _______  ___
+ *   Source     |       _//  _ \_/ ___\|  |/ /| __ \ /  _ \  \/  /
+ *   Jukebox    |    |   (  <_> )  \___|    < | \_\ (  <_> > <  <
+ *   Firmware   |____|_  /\____/ \___  >__|_ \|___  /\____/__/\_ \
+ *                     \/            \/     \/    \/            \/
+ * $Id$
+ * Physical interface of the Philips TEA5767 in Samsung YH-92x
+ *
+ * Copyright (C) 2014 by Szymon Dziok
+ *
+ * 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 "config.h"
+#include "system.h"
+#include "cpu.h"
+#include "fmradio_3wire.h"
+
+#define CLOCK_EN      GPIO_SET_BITWISE(GPIOL_ENABLE, 0x10)
+#define CLOCK_OUT     GPIO_SET_BITWISE(GPIOL_OUTPUT_EN, 0x10)
+#define CLOCK_LO      GPIO_CLEAR_BITWISE(GPIOL_OUTPUT_VAL, 0x10)
+#define CLOCK_HI      GPIO_SET_BITWISE(GPIOL_OUTPUT_VAL, 0x10)
+
+#define DATA          (GPIOL_INPUT_VAL & 0x08)
+#define DATA_EN       GPIO_SET_BITWISE(GPIOL_ENABLE, 0x08)
+#define DATA_IN       GPIO_CLEAR_BITWISE(GPIOL_OUTPUT_EN, 0x08)
+#define DATA_OUT      GPIO_SET_BITWISE(GPIOL_OUTPUT_EN, 0x08)
+#define DATA_LO       GPIO_CLEAR_BITWISE(GPIOL_OUTPUT_VAL, 0x08)
+#define DATA_HI       GPIO_SET_BITWISE(GPIOL_OUTPUT_VAL, 0x08)
+
+#define READWRITE_EN  GPIO_SET_BITWISE(GPIOL_ENABLE, 0x01)
+#define READWRITE_OUT GPIO_SET_BITWISE(GPIOL_OUTPUT_EN, 0x01)
+#define READWRITE_LO  GPIO_CLEAR_BITWISE(GPIOL_OUTPUT_VAL, 0x01)
+#define READWRITE_HI  GPIO_SET_BITWISE(GPIOL_OUTPUT_VAL, 0x01)
+
+#define DELAY1   udelay(1)
+#define DELAY2   udelay(2)
+
+void fmradio_3wire_init(void)
+{
+    READWRITE_EN;
+    READWRITE_OUT;
+
+    DATA_EN;
+    DATA_IN;
+
+    CLOCK_EN;
+    CLOCK_HI;
+    CLOCK_OUT;
+
+    DELAY2;
+}
+
+int fmradio_3wire_write(const unsigned char* buf)
+{
+    int i, j;
+
+    CLOCK_LO;
+    READWRITE_LO;
+    DELAY2;
+    READWRITE_HI;
+    DELAY1;
+    DATA_OUT;
+
+    /* 5 bytes to the tuner */
+    for (j = 0; j < 5; j++)
+    {
+        for (i = 7; i >= 0; i--)
+        {
+            if ((buf[j] >> i) & 0x1) DATA_HI;
+                else DATA_LO;
+            DELAY1;
+            CLOCK_HI;
+            DELAY2;
+            CLOCK_LO;
+            DELAY1;
+        }
+    }
+    READWRITE_LO;
+
+    return j;
+}
+
+int fmradio_3wire_read(unsigned char* buf)
+{
+    int i, j;
+
+    CLOCK_LO;
+    READWRITE_HI;
+    DELAY2;
+    READWRITE_LO;
+    DELAY2;
+    DATA_IN;
+
+    /* 5 bytes from the tuner */
+    for (j = 0; j < 5; j++)
+    {
+        buf[j] = 0;
+        for (i = 7; i >= 0; i--)
+        {
+            buf[j] |= ((DATA >> 3) << i);
+
+            CLOCK_HI;
+            DELAY2;
+            CLOCK_LO;
+            DELAY2;
+        }
+    }
+    READWRITE_HI;
+
+    return j;
+}
diff --git a/firmware/target/arm/samsung/power-yh82x_yh92x.c b/firmware/target/arm/samsung/power-yh82x_yh92x.c
index 021ddade4d..b6c18c5fd0 100644
--- a/firmware/target/arm/samsung/power-yh82x_yh92x.c
+++ b/firmware/target/arm/samsung/power-yh82x_yh92x.c
@@ -20,7 +20,7 @@
  ****************************************************************************/
 
 /* Created from power.c using some iPod code, and some custom stuff based on 
-   GPIO analysis 
+   GPIO analysis
 */
 
 #include "config.h"
@@ -32,9 +32,26 @@
 #include "power.h"
 #include "logf.h"
 #include "usb.h"
+#include "fmradio_3wire.h"
+
+#if CONFIG_TUNER
+bool tuner_power(bool status)
+{
+    GPIO_SET_BITWISE(GPIOL_ENABLE, 0x04);
+    GPIO_SET_BITWISE(GPIOL_OUTPUT_EN, 0x04);
+    if (status)
+        GPIO_CLEAR_BITWISE(GPIOL_OUTPUT_VAL, 0x04);
+    else
+        GPIO_SET_BITWISE(GPIOL_OUTPUT_VAL, 0x04);
+    return status;
+}
+#endif
 
 void power_init(void)
 {
+#if CONFIG_TUNER
+    fmradio_3wire_init();
+#endif
 }
 
 unsigned int power_input_status(void)
-- 
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