1 files changed, 162 insertions, 0 deletions

diff --git a/firmware/target/arm/imx233/fmradio-imx233.c b/firmware/target/arm/imx233/fmradio-imx233.c
new file mode 100644
index 0000000000..28ac4a4893
--- /dev/null
+++ b/firmware/target/arm/imx233/fmradio-imx233.c
@@ -0,0 +1,162 @@
+/***************************************************************************
+ *             __________               __   ___.
+ *   Open      \______   \ ____   ____ |  | _\_ |__   _______  ___
+ *   Source     |       _//  _ \_/ ___\|  |/ /| __ \ /  _ \  \/  /
+ *   Jukebox    |    |   (  <_> )  \___|    < | \_\ (  <_> > <  <
+ *   Firmware   |____|_  /\____/ \___  >__|_ \|___  /\____/__/\_ \
+ *                     \/            \/     \/    \/            \/
+ * $Id$
+ *
+ * Copyright (C) 2013 by Amaury Pouly
+ *
+ * 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 "fmradio-imx233.h"
+#include "fmradio-target.h"
+#include "pinctrl-imx233.h"
+#include "i2c.h"
+#include "generic_i2c.h"
+
+#ifndef IMX233_FMRADIO_I2C
+#error You must define IMX233_FMRADIO_I2C in fmradio-target.h
+#endif
+
+#ifndef IMX233_FMRADIO_POWER
+#error You must define IMX233_FMRADIO_POWER in fmradio-target.h
+#endif
+
+/** Hardware I2C */
+#if IMX233_FMRADIO_I2C == FMI_HW
+void fmradio_i2c_init(void)
+{
+}
+
+int fmradio_i2c_write(unsigned char address, const unsigned char* buf, int count)
+{
+    return i2c_write(address, buf, count);
+}
+
+int fmradio_i2c_read(unsigned char address, unsigned char* buf, int count)
+{
+    return i2c_read(address, buf, count);
+}
+/** Software I2C */
+#elif IMX233_FMRADIO_I2C == FMI_SW
+#if !defined(FMI_SW_SDA_BANK) || !defined(FMI_SW_SDA_PIN) || \
+    !defined(FMI_SW_SCL_BANK) || !defined(FMI_SW_SCL_PIN)
+#error You must define FMI_SW_SDA_BANK, FMI_SW_SDA_PIN, FMI_SW_SCL_BANK and FMI_SW_SCL_PIN
+#endif
+static int fmradio_i2c_bus = -1;
+
+static void i2c_scl_dir(bool out)
+{
+    imx233_pinctrl_enable_gpio(FMI_SW_SCL_BANK, FMI_SW_SCL_PIN, out);
+}
+
+static void i2c_sda_dir(bool out)
+{
+    imx233_pinctrl_enable_gpio(FMI_SW_SDA_BANK, FMI_SW_SDA_PIN, out);
+}
+
+static void i2c_scl_out(bool high)
+{
+    imx233_pinctrl_set_gpio(FMI_SW_SCL_BANK, FMI_SW_SCL_PIN, high);
+}
+
+static void i2c_sda_out(bool high)
+{
+    imx233_pinctrl_set_gpio(FMI_SW_SDA_BANK, FMI_SW_SDA_PIN, high);
+}
+
+static bool i2c_scl_in(void)
+{
+    return imx233_pinctrl_get_gpio(FMI_SW_SCL_BANK, FMI_SW_SCL_PIN);
+}
+
+static bool i2c_sda_in(void)
+{
+    return imx233_pinctrl_get_gpio(FMI_SW_SDA_BANK, FMI_SW_SDA_PIN);
+}
+
+static void i2c_delay(int d)
+{
+    udelay(d);
+}
+
+struct i2c_interface fmradio_i2c =
+{
+    .scl_dir = i2c_scl_dir,
+    .sda_dir = i2c_sda_dir,
+    .scl_out = i2c_scl_out,
+    .sda_out = i2c_sda_out,
+    .scl_in = i2c_scl_in,
+    .sda_in = i2c_sda_in,
+    .delay = i2c_delay,
+    .delay_hd_sta = 4,
+    .delay_hd_dat = 5,
+    .delay_su_dat = 1,
+    .delay_su_sto = 4,
+    .delay_su_sta = 5,
+    .delay_thigh = 4
+};
+
+void fmradio_i2c_init(void)
+{
+    imx233_pinctrl_acquire(FMI_SW_SDA_BANK, FMI_SW_SDA_PIN, "fmradio_i2c_sda");
+    imx233_pinctrl_acquire(FMI_SW_SCL_BANK, FMI_SW_SCL_BANK, "fmradio_i2c_scl");
+    imx233_pinctrl_set_function(FMI_SW_SDA_BANK, FMI_SW_SDA_PIN, PINCTRL_FUNCTION_GPIO);
+    imx233_pinctrl_set_function(FMI_SW_SCL_BANK, FMI_SW_SCL_BANK, PINCTRL_FUNCTION_GPIO);
+    fmradio_i2c_bus = i2c_add_node(&fmradio_i2c);
+}
+
+int fmradio_i2c_write(unsigned char address, const unsigned char* buf, int count)
+{
+    return i2c_write_data(fmradio_i2c_bus, address, -1, buf, count);
+}
+
+int fmradio_i2c_read(unsigned char address, unsigned char* buf, int count)
+{
+    return i2c_read_data(fmradio_i2c_bus, address, -1, buf, count);
+}
+#else
+#error Invalid value for IMX233_FMRADIO_I2C
+#endif
+
+static bool tuner_enable = false;
+
+bool tuner_power(bool enable)
+{
+    if(enable != tuner_enable)
+    {
+        tuner_enable = enable;
+#if IMX233_FMRADIO_POWER == FMP_GPIO
+        static bool init = false;
+        if(!init)
+        {
+            /* CE is B0P29 (active high) */
+            imx233_pinctrl_acquire(FMP_GPIO_BANK, FMP_GPIO_PIN, "tuner_power");
+            imx233_pinctrl_set_function(FMP_GPIO_BANK, FMP_GPIO_PIN, PINCTRL_FUNCTION_GPIO);
+            imx233_pinctrl_enable_gpio(FMP_GPIO_BANK, FMP_GPIO_PIN, true);
+        }
+        imx233_pinctrl_set_gpio(FMP_GPIO_BANK, FMP_GPIO_PIN, enable);
+        /* power up delay */
+        sleep(FMP_GPIO_DELAY);
+#elif IMX233_FMRADIO_POWER == FMP_NONE
+#else
+#error Invalid value for IMX233_FMRADIO_POWER
+#endif
+    }
+    return tuner_enable;
+}
+
+bool tuner_powered(void)
+{
+    return tuner_enable;
+}