From 1ba5ef716d37a9fe7f0863caed2fab8570b2c7c4 Mon Sep 17 00:00:00 2001
From: Cástor Muñoz <cmvidal@gmail.com>
Date: Fri, 3 Mar 2017 22:46:57 +0100
Subject: ipod6g: rename some target files

As preparation to add new targets to the s5l8702 directory,
rename files as:

s5l8702/ipod6g/*-ipod6g.c -> s5l8702/ipod6g/*-6g.c

Change-Id: I0cd03d6bcf39b2aa198235f9014cb6948bbafcd5
---
 firmware/target/arm/s5l8702/ipod6g/adc-6g.c | 117 ++++++++++++++++++++++++++++
 1 file changed, 117 insertions(+)
 create mode 100644 firmware/target/arm/s5l8702/ipod6g/adc-6g.c

(limited to 'firmware/target/arm/s5l8702/ipod6g/adc-6g.c')

diff --git a/firmware/target/arm/s5l8702/ipod6g/adc-6g.c b/firmware/target/arm/s5l8702/ipod6g/adc-6g.c
new file mode 100644
index 0000000000..fbe5ef805e
--- /dev/null
+++ b/firmware/target/arm/s5l8702/ipod6g/adc-6g.c
@@ -0,0 +1,117 @@
+/***************************************************************************
+ *             __________               __   ___.
+ *   Open      \______   \ ____   ____ |  | _\_ |__   _______  ___
+ *   Source     |       _//  _ \_/ ___\|  |/ /| __ \ /  _ \  \/  /
+ *   Jukebox    |    |   (  <_> )  \___|    < | \_\ (  <_> > <  <
+ *   Firmware   |____|_  /\____/ \___  >__|_ \|___  /\____/__/\_ \
+ *                     \/            \/     \/    \/            \/
+ * $Id: adc-s5l8700.c 21775 2009-07-11 14:12:02Z bertrik $
+ *
+ * Copyright (C) 2009 by Bertrik Sikken
+ *
+ * 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 "inttypes.h"
+#include "s5l8702.h"
+#include "adc.h"
+#include "adc-target.h"
+#include "pmu-target.h"
+#include "kernel.h"
+
+
+/* MS_TO_TICKS converts a milisecond time period into the
+ * corresponding amount of ticks. If the time period cannot
+ * be accurately measured in ticks it will round up.
+ */
+#define MS_PER_HZ (1000/HZ)
+#define MS_TO_TICKS(x) (((x)+MS_PER_HZ-1)/MS_PER_HZ)
+
+static const struct pmu_adc_channel adc_channels[] =
+{
+    [ADC_BATTERY] =
+    {
+        .name = "Battery",
+        .adcc1 = PCF5063X_ADCC1_MUX_BATSNS_SUBTR
+               | PCF5063X_ADCC1_AVERAGE_4
+               | PCF5063X_ADCC1_RES_10BIT,
+    },
+
+    [ADC_USBDATA] =
+    {
+        .name = "USB D+/D-",
+        .adcc1 = PCF5063X_ADCC1_MUX_ADCIN2_RES
+               | PCF5063X_ADCC1_AVERAGE_16
+               | PCF5063X_ADCC1_RES_10BIT,
+        .adcc3 = PCF5063X_ADCC3_RES_DIV_THREE,
+    },
+
+    [ADC_ACCESSORY] =
+    {
+        .name = "Accessory",
+        .adcc1 = PCF5063X_ADCC1_MUX_ADCIN1
+               | PCF5063X_ADCC1_AVERAGE_16
+               | PCF5063X_ADCC1_RES_10BIT,
+        .adcc2 = PCF5063X_ADCC2_RATIO_ADCIN1
+               | PCF5063X_ADCC2_RATIOSETTL_10US,
+        .adcc3 = PCF5063X_ADCC3_ACCSW_EN,
+        .bias_dly = MS_TO_TICKS(50),
+    },
+};
+
+const char *adc_name(int channel)
+{
+    return adc_channels[channel].name;
+}
+
+unsigned short adc_read_millivolts(int channel)
+{
+    const struct pmu_adc_channel *ch = &adc_channels[channel];
+    return pmu_adc_raw2mv(ch, pmu_read_adc(ch));
+}
+
+/* Returns battery voltage [millivolts] */
+unsigned int adc_read_battery_voltage(void)
+{
+    return adc_read_millivolts(ADC_BATTERY);
+}
+
+/* Returns USB D+/D- voltage from ADC [millivolts] */
+unsigned int adc_read_usbdata_voltage(bool dp)
+{
+    unsigned int mvolts;
+    int gpio = dp ? 0xb0300 : 0xb0200; /* select D+/D- */
+    GPIOCMD = gpio | 0xf; /* route to ADCIN2 */
+    mvolts = adc_read_millivolts(ADC_USBDATA);
+    GPIOCMD = gpio | 0xe; /* unroute */
+    return mvolts;
+}
+
+/* Returns resistor connected to "Accessory identify" pin [ohms] */
+#define IAP_DEVICE_RESISTOR 100000  /* ohms */
+int adc_read_accessory_resistor(void)
+{
+    int raw = pmu_read_adc(&adc_channels[ADC_ACCESSORY]);
+    return (1023-raw) ? raw * IAP_DEVICE_RESISTOR / (1023-raw)
+                      : -1 /* open circuit */;
+}
+
+
+/* API functions */
+unsigned short adc_read(int channel)
+{
+    return pmu_read_adc(&adc_channels[channel]);
+}
+
+void adc_init(void)
+{
+}
-- 
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