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authorAmaury Pouly <amaury.pouly@gmail.com>2013-11-19 20:39:10 +0000
committerAmaury Pouly <amaury.pouly@gmail.com>2013-11-19 20:39:10 +0000
commit446f352abda2dbc9de90c35a02100ed5e9aad77c (patch)
tree7ee2b4dae98376e0380b0b8bc44e1e688d10ede2 /firmware/target/arm/imx233/fmradio-imx233.c
parentc2c2274e0adacc1a0c5bdb57fa1367badb7b047f (diff)
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imx233: factor fmradio i2c and tuner power code
Choices are limited for those: i2c is either generic software or imx233 hardware and power is either none or with a gpio. So factor ever possible combination in a single common file and use fmradio-target.h to supply the required parameters. This will remove a bunch of duplicate code. Change-Id: If12faeb2e371631cd39cc18a4c1d859812007934
Diffstat (limited to 'firmware/target/arm/imx233/fmradio-imx233.c')
-rw-r--r--firmware/target/arm/imx233/fmradio-imx233.c162
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;
+}