--- /dev/null
+/**
+ * \file
+ * <!--
+ * This file is part of BeRTOS.
+ *
+ * Bertos 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 program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
+ *
+ * As a special exception, you may use this file as part of a free software
+ * library without restriction. Specifically, if other files instantiate
+ * templates or use macros or inline functions from this file, or you compile
+ * this file and link it with other files to produce an executable, this
+ * file does not by itself cause the resulting executable to be covered by
+ * the GNU General Public License. This exception does not however
+ * invalidate any other reasons why the executable file might be covered by
+ * the GNU General Public License.
+ *
+ * Copyright 2011 Develer S.r.l. (http://www.develer.com/)
+ *
+ * -->
+ *
+ * \brief Configuration file for the WM8731 module.
+ *
+ * \author Daniele Basile <asterix@develer.com>
+ */
+
+#ifndef CFG_WM8731_H
+#define CFG_WM8731_H
+
+
+
+#endif /* CFG_WM8731_H */
--- /dev/null
+/**
+ * \file
+ * <!--
+ * This file is part of BeRTOS.
+ *
+ * Bertos 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 program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
+ *
+ * As a special exception, you may use this file as part of a free software
+ * library without restriction. Specifically, if other files instantiate
+ * templates or use macros or inline functions from this file, or you compile
+ * this file and link it with other files to produce an executable, this
+ * file does not by itself cause the resulting executable to be covered by
+ * the GNU General Public License. This exception does not however
+ * invalidate any other reasons why the executable file might be covered by
+ * the GNU General Public License.
+ *
+ * Copyright 2011 Develer S.r.l. (http://www.develer.com/)
+ *
+ * -->
+ *
+ * \author Daniele Basile <asterix@develer.com>
+ *
+ * \brief WM8731 Audio codec 2 wire driver.
+ *
+ */
+
+#include "hw/hw_wm8731.h"
+#include "cfg/cfg_wm8731.h"
+
+#include <cpu/irq.h>
+
+#include <drv/i2c.h>
+
+/* Reset register*/
+#define WM8731_REG_RESET 0x0F
+
+/* Left Line in register */
+#define WM8731_REG_LEFT_LINEIN 0x0
+#define WM8731_LINVOL_BITS_MASK 0xF // Left line input volume control
+#define WM8731_LINMUTE_BIT 7 // Left line input mute to ADC
+#define WM8731_LRINBOTH_BIT 8 // Left to right channel line input volume and mute data load control
+
+/* Right Line in register */
+#define WM8731_REG_RIGHT_LINEIN 0x1
+#define WM8731_RINVOL_BITS_MASK 0xF // Right line input volume control
+#define WM8731_RINMUTE_BIT 7 // Right line input mute to ADC
+#define WM8731_RLINBOTH_BIT 8 // Right to right channel line input volume and mute data load control
+
+/* Left Headphone out register*/
+#define WM8731_REG_LEFT_HPOUT 0x2
+#define WM8731_LHPVOL_BITS_MASK 0x7 // Left chnnel headphone output volume control
+#define WM8731_LZCEN_BIT 7 // Left channel zero cross detect enable
+#define WM8731_LRHPBOTH_BIT 8 // Left to right channel headphone volume, mute and zero cross data load control
+
+/* Right Headphone out register*/
+#define WM8731_REG_RIGHT_HPOUT 0x3
+#define WM8731_RHPVOL_BITS_MASK 0x7 // Right chnnel headphone output volume control
+#define WM8731_RZCEN_BIT 7 // Right channel zero cross detect enable
+#define WM8731_RLHPBOTH_BIT 8 // Right to right channel headphone volume, mute and zero cross data load control
+
+/* Analogue audio path control register*/
+#define WM8731_REG_ANALOGUE_PATH_CTRL 0x4
+#define WM8731_MICBOOST 0 // Microphone Input Level Boost
+#define WM8731_MUTEMIC 1 // Line input Mute to ADC
+#define WM8731_INSEL 2 // Microphone/Line Select to ADC
+#define WM8731_BYPASS 3 // Bypass switch
+#define WM8731_DACSEL 4 // DAC select
+#define WM8731_SIDETONE 5 // Side tone switch
+#define WM8731_SIDEATT_MASK 0xC0 // Side tone attenuation
+#define WM8731_SIDEATT_15dB 0xC0 // -15dB
+#define WM8731_SIDEATT_12dB 0x80 // -12dB
+#define WM8731_SIDEATT_9dB 0x40 // -9dB
+#define WM8731_SIDEATT_6dB 0x00 // -6dB
+
+
+/* Digital audio path control register*/
+#define WM8731_REG_DIGITAL_PATH_CTRL 0x5
+#define WM8731_ADCHPD 0 // ADC high pass filter enable
+#define WM8731_DEEMP_MASK 0x6 // De-emphasis controll
+#define WM8731_DEEMP_48kHz 0x6 // 48kHz
+#define WM8731_DEEMP_44k1Hz 0x4 // 44.1kHz
+#define WM8731_DEEMP_32kHz 0x2 // 32kHz
+#define WM8731_DEEMP_DISABLE 0x0 // Disable
+#define WM8731_DACMU 3 // DAC Soft Mute control
+
+/* Power down control register*/
+#define WM8731_REG_PWDOWN_CTRL 0x6
+#define WM8731_LINEINPD_BIT 0 // LineIn power down
+#define WM8731_MICPD_BIT 1 // Mic power down
+#define WM8731_ADCPD_BIT 2 // ADC power down
+#define WM8731_DACPD_BIT 3 // DAC power down
+#define WM8731_OUTPD_BIT 4 // OUT power down
+#define WM8731_OSCBIT 5 // OSC power down
+#define WM8731_CLKOUTPD_BIT 6 // CLKOUT powerdown
+#define WM8731_POWEROFF_BIT 7 // Power off device
+
+/* Interface format register*/
+#define WM8731_REG_DA_INTERFACE_FORMAT 0x7
+#define WM8731_FORMAT_BITS_MASK 0x3 // Format
+#define WM8731_FORMAT_MSB_LEFT_JUSTIFIED 0x0 // MSB-First, left justified
+#define WM8731_FORMAT_MSB_RIGHT_JUSTIFIED 0x1 // MSB-First, right justified
+#define WM8731_FORMAT_I2S 0x2 //I2S Format, MSB-First left-1 justified
+#define WM8731_FORMAT_DSP 0x3 //DSP Mode, frame sync + 2 data packed words
+#define WM8731_IWL_BITS 0xC // Input audio data bit length select
+#define WM8731_IWL_16_BIT 0x0 // 16 bit
+#define WM8731_IWL_20_BIT 0x4 // 20 bit
+#define WM8731_IWL_24_BIT 0x8 // 24 bit
+#define WM8731_IWL_32_BIT 0xC // 32 bit
+#define WM8731_IRP_BITS 4 // DACLRC phase control
+#define WM8731_IRSWAP_BIT 5 // DAC Left right clock swap
+#define WM8731_MS_BIT 6 // Master slave mode control
+#define WM8731_BCLKINV_BIT 7 // Bit clock invert
+
+/* Sampling control*/
+#define WM8731_REG_SAMPLECTRL 0x8
+#define WM8731_USBNORMAL_BIT 0 // Mode select, usb mode, normal mode
+#define WM8731_BOSR_BIT 1 // Base over-sampling rate
+#define WM8731_SR_BITS_MASK 0x3C // Sample rate control
+#define WM8731_CLKIDIV2_BIT 6 // Core clock divider select
+#define WM8731_CLKODIV2_BIT 7 // CLKOUT divider select
+
+/* Active control register*/
+#define WM8731_REG_ACTIVE_CTRL 0x9
+#define WM8731_ACTIVE_BIT 0 // Activate interface
+
+/*
+ * Codec has 7-bit address, the eighth is the R/W bit, so we
+ * write the codec address with one bit shifted left
+ */
+#define CODEC_ADDR 0x36
+
+
+
+
+static void wm8731_write(uint8_t reg, uint16_t value)
+{
+
+ uint16_t tmp = ((reg & 0x7f) << 9) | (value & 0x1ff);
+ uint8_t msb = (tmp & 0xFF00) >> 8;
+ uint8_t lsb = tmp & 0xFF;
+
+ kprintf("msb: %0x lsb: %0x\n", msb, lsb);
+/*
+ i2c_start_w(&i2c, CODEC_ADDR, 2, I2C_STOP);
+ i2c_putc(&i2c, msb);
+ i2c_putc(&i2c, lsb);
+
+
+ if (i2c_error(&i2c))
+ kputs("Errore!\n");
+*/
+}
+
+void wm8731_init(void)
+{
+}
--- /dev/null
+/**
+ * \file
+ * <!--
+ * This file is part of BeRTOS.
+ *
+ * Bertos 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 program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
+ *
+ * As a special exception, you may use this file as part of a free software
+ * library without restriction. Specifically, if other files instantiate
+ * templates or use macros or inline functions from this file, or you compile
+ * this file and link it with other files to produce an executable, this
+ * file does not by itself cause the resulting executable to be covered by
+ * the GNU General Public License. This exception does not however
+ * invalidate any other reasons why the executable file might be covered by
+ * the GNU General Public License.
+ *
+ * Copyright 2011 Develer S.r.l. (http://www.develer.com/)
+ *
+ * -->
+ *
+ * \author Daniele Basile <asterix@develer.com>
+ *
+ * \brief WM8731 Audio codec 2 wire driver.
+ *
+ * $WIZ$ module_name = "wm8731"
+ * $WIZ$ module_configuration = "bertos/cfg/cfg_wm8731.h"
+ * $WIZ$ module_depends = "i2c"
+ * $WIZ$ module_hw = "bertos/hw/hw_wm8731.h"
+ */
+
+#ifndef DRV_WM8731_H
+#define DRV_WM8731_H
+
+void wm8731_init(void);
+
+#endif /* DRV_WM8731_H */
--- /dev/null
+/**
+ * \file
+ * <!--
+ * This file is part of BeRTOS.
+ *
+ * Bertos 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 program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
+ *
+ * As a special exception, you may use this file as part of a free software
+ * library without restriction. Specifically, if other files instantiate
+ * templates or use macros or inline functions from this file, or you compile
+ * this file and link it with other files to produce an executable, this
+ * file does not by itself cause the resulting executable to be covered by
+ * the GNU General Public License. This exception does not however
+ * invalidate any other reasons why the executable file might be covered by
+ * the GNU General Public License.
+ *
+ * Copyright 2011 Develer S.r.l. (http://www.develer.com/)
+ * All Rights Reserved.
+ * -->
+ *
+ * \brief HW pin handling for WM8731 audio codec.
+ *
+ *
+ * \author Daniele Basile <asterix@develer.com>
+ */
+
+#ifndef HW_WM8731_H
+#define HW_WM8731_H
+
+#include <cfg/macros.h>
+
+#warning FIXME: This is an example implementation, you must implement it
+
+
+#define WM8731_PIN_INIT() \
+ do { \
+ /* implement me */ \
+ } while (0)
+
+#define WM8731_MCLK_INIT() \
+ do { \
+ /* implement me */ \
+ } while(0)
+
+
+#endif /* HW_WM8731_H */
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