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    Subject[PATCH 2/2] ALSA: ASoc: putting together AT91SAM9260 and TLV320AIC3X
    Hi,
    this patch is for example how to put together AT91SAM9260 and TLV320AIC3106 controlled via SPI.
    It tooks me a lot of time to make it working, so I think it could be helpfull for other people.

    In original source "snd-soc-afeb9260.c" which I use as example is BIG ERROR:
    In function "afeb9260_soc_init" is missing call of "atmel_ssc_set_audio(0);". It cause bug "PROBLEM: Asoc driver in
    2.6.37.3 for AT91SAM9260 / TLV320AIC3X is broken" which I post some time ago.

    Depend on: [PATCH 1/2] ALSA: ASoc: TLV320AIC3X: ad SPI and clock on GPIO2 or BCLK
    Kernel version: 2.6.38
    Signed-off-by: Jiri Prchal <jiri.prchal@aksignal.cz>
    ---

    diff -uprN -X linux-2.6.38-vanilla/Documentation/dontdiff linux-2.6.38-vanilla/arch/arm/mach-at91/board-cdu.c
    /home/prchal/arm/fw-cdu/linux/linux-2.6.38/arch/arm/mach-at91/board-cdu.c
    --- linux-2.6.38-vanilla/arch/arm/mach-at91/board-cdu.c 1970-01-01 01:00:00.000000000 +0100
    +++ /home/prchal/arm/fw-cdu/linux/linux-2.6.38/arch/arm/mach-at91/board-cdu.c 2011-03-24 09:15:23.852370981 +0100
    @@ -0,0 +1,345 @@
    +/*
    + * linux/arch/arm/mach-at91/board-cdu.c
    + *
    + * Copyright (C) 2005 SAN People
    + * Copyright (C) 2006 Atmel
    + * Copyright (C) 2011 AKsignal Brno
    + * jiri.prchal@aksignal.cz
    + *
    + * 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 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., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
    + */
    +
    +#include <linux/types.h>
    +#include <linux/init.h>
    +#include <linux/mm.h>
    +#include <linux/module.h>
    +#include <linux/platform_device.h>
    +#include <linux/spi/spi.h>
    +#include <linux/clk.h>
    +#include <linux/spi/mcp23s08.h>
    +#include <linux/dma-mapping.h>
    +
    +#include <mach/hardware.h>
    +#include <asm/setup.h>
    +#include <asm/mach-types.h>
    +#include <asm/irq.h>
    +
    +#include <asm/mach/arch.h>
    +#include <asm/mach/map.h>
    +#include <asm/mach/irq.h>
    +
    +#include <mach/board.h>
    +#include <mach/gpio.h>
    +#include <mach/at91sam9_smc.h>
    +
    +#include "sam9_smc.h"
    +#include "generic.h"
    +
    +static void __init cdu_map_io(void)
    +{
    + /* Initialize processor: 6 MHz crystal */
    + at91sam9260_initialize(6000000);
    +
    + /* DBGU on ttyS0. (Rx & Tx only) */
    + at91_register_uart(0, 0, 0);
    +
    + /* USART0 on ttyS1. (Rx, Tx, CTS, RTS, DTR, DSR, DCD, RI) */
    + at91_register_uart(AT91SAM9260_ID_US0, 1, ATMEL_UART_CTS | ATMEL_UART_RTS
    + | ATMEL_UART_DTR | ATMEL_UART_DSR | ATMEL_UART_DCD
    + | ATMEL_UART_RI);
    +
    + /* USART1 on ttyS2. (Rx, Tx, RTS) */
    + at91_register_uart(AT91SAM9260_ID_US1, 2, ATMEL_UART_RTS);
    +
    + /* USART2 on ttyS3. (Rx, Tx, RTS) */
    + at91_register_uart(AT91SAM9260_ID_US2, 3, ATMEL_UART_RTS);
    +
    + /* USART3 on ttyS4. (Rx, Tx, RTS) */
    + at91_register_uart(AT91SAM9260_ID_US3, 4, ATMEL_UART_RTS);
    +
    + /* USART4 on ttyS5. (Tx) */
    + /* EBUS - transmit audio, no rx */
    + /*at91_register_uart(AT91SAM9260_ID_US4, 5, 0);*/
    +
    + /* set serial console to ttyS0 (ie, DBGU) */
    + at91_set_serial_console(0);
    +}
    +
    +static void __init cdu_init_irq(void)
    +{
    + at91sam9260_init_interrupts(NULL);
    +}
    +
    +/*
    + * USB Host port
    + */
    +static struct at91_usbh_data __initdata cdu_usbh_data = {
    + .ports = 2,
    +};
    +
    +/*
    + * USB Device port
    + */
    +static struct at91_udc_data __initdata cdu_udc_data = {
    + .vbus_pin = AT91_PIN_PC15,
    + .pullup_pin = 0, /* pull-up driven by UDC */
    +};
    +
    +/*
    + * SPI devices.
    + */
    +#define MCP23S08_GPIO_BASE 128
    +
    +static const struct mcp23s08_platform_data mcp23s08_gpio_info = {
    + .chip[0].is_present = true,
    + .chip[0].pullups = 0,
    + .base = MCP23S08_GPIO_BASE,
    +};
    +
    +static struct spi_board_info cdu_spi_devices[] = {
    + { /* ADC LTC2488 */
    + .modalias = "spidev",
    + .chip_select = 0,
    + .max_speed_hz = 1 * 1000 * 1000,
    + .bus_num = 1,
    + },
    + { /* GPIO expander MCP23S08 */
    + .modalias = "mcp23s08",
    + .chip_select = 1,
    + .max_speed_hz = 1000000,
    + .bus_num = 1,
    + .platform_data = &mcp23s08_gpio_info,
    + .mode = SPI_MODE_3,
    + },
    + { /* non volatile memory (F-RAM) FM25VN10 */
    + .modalias = "spidev",
    + .chip_select = 2,
    + .max_speed_hz = 1 * 1000 * 1000,
    + .bus_num = 1,
    + },
    + { /* audiocodec TLV320AIC3106 */
    + .modalias = "tlv320aic3x-codec",
    + .chip_select = 3,
    + .max_speed_hz = 1000000,
    + .bus_num = 1,
    + .mode = SPI_MODE_1,
    + },
    +};
    +
    +/*
    + * MACB Ethernet device
    + */
    +static struct at91_eth_data __initdata cdu_macb_data = {
    + .phy_irq_pin = 0, //nc,
    + .is_rmii = 1,
    +};
    +
    +/*
    + * NAND flash
    + */
    +static struct mtd_partition __initdata cdu_nand_partition[] = {
    + {
    + .name = "bootstrap",
    + .offset = 0,
    + .size = 0x40000,
    + },
    + {
    + .name = "uboot",
    + .offset = 0x40000,
    + .size = (0xc0000 - 0x40000),
    + },
    + {
    + .name = "ubootenv",
    + .offset = 0xc0000,
    + .size = (0x100000 - 0xc0000),
    + },
    + {
    + .name = "kernel",
    + .offset = 0x100000,
    + .size = (0x400000 - 0x100000),
    + },
    + {
    + .name = "rootfs",
    + .offset = 0x400000,
    + .size = (0x8000000 - 0x400000),
    + },
    +};
    +
    +static struct mtd_partition * __init nand_partitions(int size, int *num_partitions)
    +{
    + *num_partitions = ARRAY_SIZE(cdu_nand_partition);
    + return cdu_nand_partition;
    +}
    +
    +static struct atmel_nand_data __initdata cdu_nand_data = {
    + .ale = 21,
    + .cle = 22,
    +// .det_pin = ... not connected
    + .rdy_pin = AT91_PIN_PC13,
    + .enable_pin = AT91_PIN_PC14,
    + .partition_info = nand_partitions,
    + .bus_width_16 = 0,
    +};
    +
    +static struct sam9_smc_config __initdata cdu_nand_smc_config = {
    + .ncs_read_setup = 0,
    + .nrd_setup = 1,
    + .ncs_write_setup = 0,
    + .nwe_setup = 1,
    +
    + .ncs_read_pulse = 3,
    + .nrd_pulse = 3,
    + .ncs_write_pulse = 3,
    + .nwe_pulse = 3,
    +
    + .read_cycle = 5,
    + .write_cycle = 5,
    +
    + .mode = AT91_SMC_READMODE | AT91_SMC_WRITEMODE | AT91_SMC_EXNWMODE_DISABLE,
    + .tdf_cycles = 2,
    +};
    +
    +static void __init cdu_add_device_nand(void)
    +{
    + /* setup bus-width (8 or 16) */
    + if (cdu_nand_data.bus_width_16)
    + cdu_nand_smc_config.mode |= AT91_SMC_DBW_16;
    + else
    + cdu_nand_smc_config.mode |= AT91_SMC_DBW_8;
    +
    + /* configure chip-select 3 (NAND) */
    + sam9_smc_configure(3, &cdu_nand_smc_config);
    +
    + at91_add_device_nand(&cdu_nand_data);
    +}
    +
    +/*
    +* MCI (SD/MMC)
    +*/
    +static struct at91_mmc_data __initdata ek_mmc_data = {
    + .slot_b = 0,
    + .wire4 = 1,
    + // .det_pin = ... not connected
    + // .wp_pin = ... not connected
    + // .vcc_pin = ... not connected
    +};
    +
    +/*
    + * LEDs
    + */
    +static struct gpio_led cdu_leds[] = {
    + {
    + .name = "red",
    + .gpio = AT91_PIN_PC10,
    + .default_trigger = "timer",
    + },
    + {
    + .name = "green",
    + .gpio = AT91_PIN_PA5,
    + .default_trigger = "heartbeat",
    + },
    + {
    + .name = "yellow",
    + .gpio = AT91_PIN_PB20,
    + .active_low = 1,
    + .default_trigger = "mmc0",
    + },
    + {
    + .name = "blue",
    + .gpio = AT91_PIN_PB21,
    + .active_low = 1,
    + .default_trigger = "nand-disk",
    + },
    +};
    +
    +/*
    + * GPIOs
    + */
    +static struct gpio gpios[] = {
    + { AT91_PIN_PA0, GPIOF_OUT_INIT_LOW, "ebus_dir"},
    + { AT91_PIN_PA1, GPIOF_OUT_INIT_LOW, "time_dir"},
    + { AT91_PIN_PB12, GPIOF_OUT_INIT_LOW, "gsm_rst"},
    + { AT91_PIN_PB13, GPIOF_OUT_INIT_LOW, "gsm_on"},
    + { AT91_PIN_PC2, GPIOF_IN, "por"},
    + { AT91_PIN_PC7, GPIOF_OUT_INIT_HIGH, "spk_shdn"},
    +
    + { AT91_PIN_PC0, GPIOF_IN, "in13"},
    + { AT91_PIN_PC1, GPIOF_IN, "in14"},
    + { AT91_PIN_PA22, GPIOF_IN, "in17"},
    + { AT91_PIN_PA23, GPIOF_IN, "in18"},
    + { AT91_PIN_PA24, GPIOF_IN, "in19"},
    + { AT91_PIN_PA25, GPIOF_IN, "in20"},
    +
    + { AT91_PIN_PA26, GPIOF_OUT_INIT_LOW, "out15"},
    + { AT91_PIN_PA27, GPIOF_OUT_INIT_LOW, "out16"},
    + { AT91_PIN_PA28, GPIOF_OUT_INIT_LOW, "out17"},
    + { AT91_PIN_PA29, GPIOF_OUT_INIT_LOW, "out18"},
    + { AT91_PIN_PA30, GPIOF_OUT_INIT_LOW, "out19"},
    + { AT91_PIN_PB29, GPIOF_OUT_INIT_LOW, "out20"},
    +
    + { MCP23S08_GPIO_BASE + 0, GPIOF_IN, "busadrp"},
    + { MCP23S08_GPIO_BASE + 2, GPIOF_IN, "busadr5"},
    + { MCP23S08_GPIO_BASE + 3, GPIOF_IN, "busadr4"},
    + { MCP23S08_GPIO_BASE + 4, GPIOF_IN, "busadr3"},
    + { MCP23S08_GPIO_BASE + 5, GPIOF_IN, "busadr2"},
    + { MCP23S08_GPIO_BASE + 6, GPIOF_IN, "busadr1"},
    + { MCP23S08_GPIO_BASE + 7, GPIOF_IN, "busadr0"},
    +};
    +
    +static void __init cdu_add_gpio (void)
    +{
    + int i;
    +
    + for (i = 0; i < ARRAY_SIZE (gpios); i++) {
    + gpio_request_one (gpios[i].gpio, gpios[i].flags, gpios[i].label);
    + }
    +}
    +
    +/*
    + * init
    + */
    +static void __init cdu_board_init(void)
    +{
    + /* Serial */
    + at91_add_device_serial();
    + /* USB Host */
    + at91_add_device_usbh(&cdu_usbh_data);
    + /* USB Device */
    + at91_add_device_udc(&cdu_udc_data);
    + /* SPI */
    + at91_add_device_spi(cdu_spi_devices, ARRAY_SIZE(cdu_spi_devices));
    + /* NAND */
    + cdu_add_device_nand();
    + /* Ethernet */
    + at91_add_device_eth(&cdu_macb_data);
    + /* MMC */
    + at91_add_device_mmc(0, &ek_mmc_data);
    + /* SSC */
    + at91_add_device_ssc(AT91SAM9260_ID_SSC, (ATMEL_SSC_TF | ATMEL_SSC_TK | ATMEL_SSC_TD | ATMEL_SSC_RD));
    + /* LEDs */
    + at91_gpio_leds(cdu_leds, ARRAY_SIZE(cdu_leds));
    + // GPIO
    + cdu_add_gpio ();
    +}
    +
    +MACHINE_START(AT91SAM9260EK, "CDU")
    + /* Maintainer: Atmel */
    + .boot_params = AT91_SDRAM_BASE + 0x100,
    + .timer = &at91sam926x_timer,
    + .map_io = cdu_map_io,
    + .init_irq = cdu_init_irq,
    + .init_machine = cdu_board_init,
    +MACHINE_END
    diff -uprN -X linux-2.6.38-vanilla/Documentation/dontdiff linux-2.6.38-vanilla/arch/arm/mach-at91/Kconfig
    /home/prchal/arm/fw-cdu/linux/linux-2.6.38/arch/arm/mach-at91/Kconfig
    --- linux-2.6.38-vanilla/arch/arm/mach-at91/Kconfig 2011-03-15 02:20:32.000000000 +0100
    +++ /home/prchal/arm/fw-cdu/linux/linux-2.6.38/arch/arm/mach-at91/Kconfig 2011-03-16 09:19:40.000000000 +0100
    @@ -213,6 +213,12 @@ config MACH_AT91SAM9260EK
    Select this if you are using Atmel's AT91SAM9260-EK or AT91SAM9XE Evaluation Kit
    <http://www.atmel.com/dyn/products/tools_card.asp?tool_id=3933>

    +config MACH_CDU
    + bool "CDU AKsignal board"
    + help
    + Select this if you are using AKsignal CDU board
    + <http://www.aksignal.cz>
    +
    config MACH_CAM60
    bool "KwikByte KB9260 (CAM60) board"
    help
    diff -uprN -X linux-2.6.38-vanilla/Documentation/dontdiff linux-2.6.38-vanilla/arch/arm/mach-at91/Makefile
    /home/prchal/arm/fw-cdu/linux/linux-2.6.38/arch/arm/mach-at91/Makefile
    --- linux-2.6.38-vanilla/arch/arm/mach-at91/Makefile 2011-03-15 02:20:32.000000000 +0100
    +++ /home/prchal/arm/fw-cdu/linux/linux-2.6.38/arch/arm/mach-at91/Makefile 2011-03-16 09:19:40.000000000 +0100
    @@ -40,6 +40,7 @@ obj-$(CONFIG_MACH_ECO920) += board-eco92

    # AT91SAM9260 board-specific support
    obj-$(CONFIG_MACH_AT91SAM9260EK) += board-sam9260ek.o
    +obj-$(CONFIG_MACH_CDU) += board-cdu.o
    obj-$(CONFIG_MACH_CAM60) += board-cam60.o
    obj-$(CONFIG_MACH_SAM9_L9260) += board-sam9-l9260.o
    obj-$(CONFIG_MACH_USB_A9260) += board-usb-a9260.o
    diff -uprN -X linux-2.6.38-vanilla/Documentation/dontdiff linux-2.6.38-vanilla/sound/soc/atmel/Kconfig
    /home/prchal/arm/fw-cdu/linux/linux-2.6.38/sound/soc/atmel/Kconfig
    --- linux-2.6.38-vanilla/sound/soc/atmel/Kconfig 2011-03-15 02:20:32.000000000 +0100
    +++ /home/prchal/arm/fw-cdu/linux/linux-2.6.38/sound/soc/atmel/Kconfig 2011-03-22 09:46:46.751566158 +0100
    @@ -50,3 +50,11 @@ config SND_AT91_SOC_AFEB9260
    select SND_SOC_TLV320AIC23
    help
    Say Y here to support sound on AFEB9260 board.
    +
    +config SND_AT91_SOC_CDU
    + tristate "SoC Audio support for CDU board"
    + depends on ARCH_AT91 && MACH_CDU && SND_ATMEL_SOC
    + select SND_ATMEL_SOC_SSC
    + select SND_SOC_TLV320AIC3X
    + help
    + Say Y here to support sound on CDU board.
    diff -uprN -X linux-2.6.38-vanilla/Documentation/dontdiff linux-2.6.38-vanilla/sound/soc/atmel/Makefile
    /home/prchal/arm/fw-cdu/linux/linux-2.6.38/sound/soc/atmel/Makefile
    --- linux-2.6.38-vanilla/sound/soc/atmel/Makefile 2011-03-15 02:20:32.000000000 +0100
    +++ /home/prchal/arm/fw-cdu/linux/linux-2.6.38/sound/soc/atmel/Makefile 2011-03-16 09:26:17.000000000 +0100
    @@ -14,3 +14,4 @@ snd-soc-playpaq-objs := playpaq_wm8510.o
    obj-$(CONFIG_SND_AT91_SOC_SAM9G20_WM8731) += snd-soc-sam9g20-wm8731.o
    obj-$(CONFIG_SND_AT32_SOC_PLAYPAQ) += snd-soc-playpaq.o
    obj-$(CONFIG_SND_AT91_SOC_AFEB9260) += snd-soc-afeb9260.o
    +obj-$(CONFIG_SND_AT91_SOC_CDU) += snd-soc-cdu.o
    diff -uprN -X linux-2.6.38-vanilla/Documentation/dontdiff linux-2.6.38-vanilla/sound/soc/atmel/snd-soc-cdu.c
    /home/prchal/arm/fw-cdu/linux/linux-2.6.38/sound/soc/atmel/snd-soc-cdu.c
    --- linux-2.6.38-vanilla/sound/soc/atmel/snd-soc-cdu.c 1970-01-01 01:00:00.000000000 +0100
    +++ /home/prchal/arm/fw-cdu/linux/linux-2.6.38/sound/soc/atmel/snd-soc-cdu.c 2011-03-24 09:27:55.404367652 +0100
    @@ -0,0 +1,264 @@
    +/*
    + * snd-soc-cdu -- SoC audio for AT91SAM9260-based
    + * AKsignal CDU board.
    + *
    + * Copyright (C) 2005 SAN People
    + * Copyright (C) 2008 Atmel
    + * Copyright (C) 2011 AK signal Brno
    + *
    + * Authors: Sedji Gaouaou <sedji.gaouaou@atmel.com>
    + * Jiri Prchal <jiri.prchal@aksignal.cz>
    + *
    + * Based on ati_b1_wm8731.c by:
    + * Frank Mandarino <fmandarino@endrelia.com>
    + * Copyright 2006 Endrelia Technologies Inc.
    + * Based on corgi.c by:
    + * Copyright 2005 Wolfson Microelectronics PLC.
    + * Copyright 2005 Openedhand Ltd.
    + *
    + * 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 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., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
    + */
    +
    +#include <linux/module.h>
    +#include <linux/moduleparam.h>
    +#include <linux/kernel.h>
    +#include <linux/clk.h>
    +#include <linux/timer.h>
    +#include <linux/interrupt.h>
    +#include <linux/platform_device.h>
    +#include <linux/i2c.h>
    +
    +#include <linux/atmel-ssc.h>
    +#include <sound/core.h>
    +#include <sound/pcm.h>
    +#include <sound/pcm_params.h>
    +#include <sound/soc.h>
    +
    +#include <asm/mach-types.h>
    +#include <mach/hardware.h>
    +#include <mach/gpio.h>
    +
    +#include "../codecs/tlv320aic3x.h"
    +#include "atmel-pcm.h"
    +#include "atmel_ssc_dai.h"
    +
    +struct {
    + unsigned int channels;
    + snd_pcm_format_t format;
    + unsigned int rate;
    + unsigned int codecclk;
    + unsigned int cmrdiv;
    + unsigned int period;
    +} cdu_audio[] = {
    + /* 16 bit stereo modes */
    + {2, SNDRV_PCM_FORMAT_S16_LE, 8000, 2096000, 25, 130,},
    + {2, SNDRV_PCM_FORMAT_S16_LE, 16000, 2496000, 21, 77,},
    + {2, SNDRV_PCM_FORMAT_S16_LE, 32000, 2496000, 21, 38,},
    + {2, SNDRV_PCM_FORMAT_S16_LE, 48000, 2016000, 26, 20,},
    + {2, SNDRV_PCM_FORMAT_S16_LE, 96000, 4032000, 13, 20,},
    +
    + {2, SNDRV_PCM_FORMAT_S16_LE, 11025, 2381400, 22, 107,},
    + {2, SNDRV_PCM_FORMAT_S16_LE, 22050, 2381400, 22, 53,},
    + {2, SNDRV_PCM_FORMAT_S16_LE, 44100, 2381400, 22, 26,},
    + {2, SNDRV_PCM_FORMAT_S16_LE, 88200, 4762800, 11, 26,},
    +
    + {2, SNDRV_PCM_FORMAT_S16_LE, 11520, 2626560, 20, 113,},
    + {2, SNDRV_PCM_FORMAT_S16_LE, 23040, 2626560, 20, 56,},
    +
    +};
    +
    +static int cdu_hw_params(struct snd_pcm_substream *substream, struct snd_pcm_hw_params *params)
    +{
    + struct snd_soc_pcm_runtime *rtd = substream->private_data;
    + struct snd_soc_dai *codec_dai = rtd->codec_dai;
    + struct snd_soc_dai *cpu_dai = rtd->cpu_dai;
    + int ret;
    + int i, found = 0;
    + snd_pcm_format_t format = params_format(params);
    + unsigned int rate = params_rate(params);
    + unsigned int channels = params_channels(params);
    +
    + /* set codec DAI configuration */
    + ret = snd_soc_dai_set_fmt(codec_dai, SND_SOC_DAIFMT_I2S | SND_SOC_DAIFMT_NB_NF | SND_SOC_DAIFMT_CBS_CFS);
    + if (ret < 0)
    + return ret;
    +
    + /* set cpu DAI configuration */
    + ret = snd_soc_dai_set_fmt(cpu_dai, SND_SOC_DAIFMT_I2S | SND_SOC_DAIFMT_NB_NF | SND_SOC_DAIFMT_CBS_CFS);
    + if (ret < 0)
    + return ret;
    +
    + /* find the correct audio parameters */
    + for (i = 0; i < ARRAY_SIZE(cdu_audio); i++) {
    + if (rate == cdu_audio[i].rate &&
    + format == cdu_audio[i].format &&
    + channels == cdu_audio[i].channels) {
    + found = 1;
    + break;
    + }
    + }
    + if (!found)
    + return -EINVAL;
    +
    + /* Set the codec system clock for DAC and ADC */
    + ret = snd_soc_dai_set_sysclk(codec_dai, CLKIN_BCLK, cdu_audio[i].codecclk, SND_SOC_CLOCK_IN);
    + if (ret < 0) {
    + printk(KERN_ERR "can't set codec system clock\n");
    + return ret;
    + }
    +
    + /* Set the cpu clock dividers to BCLK */
    + ret = snd_soc_dai_set_clkdiv(cpu_dai, ATMEL_SSC_CMR_DIV, cdu_audio[i].cmrdiv);
    + ret |= snd_soc_dai_set_clkdiv(cpu_dai, ATMEL_SSC_TCMR_PERIOD, cdu_audio[i].period);
    + ret |= snd_soc_dai_set_clkdiv(cpu_dai, ATMEL_SSC_RCMR_PERIOD, cdu_audio[i].period);
    + if (ret < 0) {
    + printk(KERN_ERR "can't set cpu system clock\n");
    + return ret;
    + }
    +
    + return 0;
    +}
    +
    +static struct snd_soc_ops cdu_ops = {
    + .hw_params = cdu_hw_params,
    +};
    +
    +static const struct snd_soc_dapm_widget cdu_dapm_widgets[] = {
    + SND_SOC_DAPM_HP("Headphone Jack", NULL),
    + SND_SOC_DAPM_LINE("Line Out", NULL),
    + SND_SOC_DAPM_MIC("Mic Jack", NULL),
    + SND_SOC_DAPM_LINE("Line In", NULL),
    +};
    +
    +static const struct snd_soc_dapm_route intercon[] = {
    + /* Headphone connected to HPLOUT, HPROUT */
    + {"Headphone Jack", NULL, "HPLOUT"},
    + {"Headphone Jack", NULL, "HPROUT"},
    +
    + /* Line Out connected to LLOUT, RLOUT */
    + {"Line Out", NULL, "LLOUT"},
    + {"Line Out", NULL, "RLOUT"},
    +
    + /* Mic connected to (MIC3L | MIC3R) */
    + {"MIC3L", NULL, "Mic Bias 2V"},
    + {"MIC3R", NULL, "Mic Bias 2V"},
    + {"Mic Bias 2V", NULL, "Mic Jack"},
    +
    + /* Line In connected to (LINE1L | LINE2L), (LINE1R | LINE2R) */
    + {"LINE1L", NULL, "Line In"},
    + {"LINE2L", NULL, "Line In"},
    + {"LINE1R", NULL, "Line In"},
    + {"LINE2R", NULL, "Line In"},
    +};
    +
    +/*
    + * Logic for a aic3x as connected on a cdu board.
    + */
    +static int cdu_aic3x_init(struct snd_soc_pcm_runtime *rtd)
    +{
    + struct snd_soc_codec *codec = rtd->codec;
    + struct snd_soc_dai *codec_dai = rtd->codec_dai;
    + struct snd_soc_dapm_context *dapm = &codec->dapm;
    + int ret;
    +
    + printk(KERN_DEBUG "cdu_aic3x: cdu_aic3x_init called\n");
    +
    + /* Add specific widgets */
    + snd_soc_dapm_new_controls(dapm, cdu_dapm_widgets,
    + ARRAY_SIZE(cdu_dapm_widgets));
    + /* Set up specific audio path interconnects */
    + snd_soc_dapm_add_routes(dapm, intercon, ARRAY_SIZE(intercon));
    +
    + /* always connected */
    + snd_soc_dapm_enable_pin(dapm, "Headphone Jack");
    + snd_soc_dapm_enable_pin(dapm, "Line Out");
    + snd_soc_dapm_enable_pin(dapm, "Mic Jack");
    + snd_soc_dapm_enable_pin(dapm, "Line In");
    +
    + snd_soc_dapm_sync(dapm);
    +
    + return 0;
    +}
    +
    +static struct snd_soc_dai_link cdu_dai = {
    + .name = "TLV320AIC3106",
    + .stream_name = "PCM",
    + .cpu_dai_name = "atmel-ssc-dai.0",
    + .codec_dai_name = "tlv320aic3x-hifi",
    + .init = cdu_aic3x_init,
    + .platform_name = "atmel-pcm-audio",
    +#if defined(CONFIG_I2C) || defined(CONFIG_I2C_MODULE)
    + .codec_name = "tlv320aic3x-codec.0-001b",
    +#endif
    +#if defined(CONFIG_SPI_MASTER)
    + .codec_name = "spi1.3",
    +#endif
    + .ops = &cdu_ops,
    +};
    +
    +static struct snd_soc_card snd_soc_cdu = {
    + .name = "TLV320AIC3106",
    + .dai_link = &cdu_dai,
    + .num_links = 1,
    +};
    +
    +static struct platform_device *cdu_snd_device;
    +
    +static int __init cdu_init(void)
    +{
    + struct clk *pllb;
    + int ret;
    +
    + ret = atmel_ssc_set_audio(0);
    + if (ret != 0) {
    + pr_err("Failed to set SSC 0 for audio: %d\n", ret);
    + return ret;
    + }
    +
    + cdu_snd_device = platform_device_alloc("soc-audio", -1);
    + if (!cdu_snd_device) {
    + printk(KERN_ERR "ASoC: Platform device allocation failed\n");
    + ret = -ENOMEM;
    + }
    +
    + platform_set_drvdata(cdu_snd_device, &snd_soc_cdu);
    +
    + ret = platform_device_add(cdu_snd_device);
    + if (ret) {
    + printk(KERN_ERR "ASoC: Platform device allocation failed\n");
    + goto err_device_add;
    + }
    +
    + return ret;
    +
    +err_device_add:
    + platform_device_put(cdu_snd_device);
    +err:
    + return ret;
    +}
    +
    +static void __exit cdu_exit(void)
    +{
    + platform_device_unregister(cdu_snd_device);
    + cdu_snd_device = NULL;
    +}
    +
    +module_init(cdu_init);
    +module_exit(cdu_exit);
    +
    +/* Module information */
    +MODULE_AUTHOR("Jiri Prchal <jiri.prchal@aksignal.cz>");
    +MODULE_DESCRIPTION("ALSA SoC CDU_AIC3X");
    +MODULE_LICENSE("GPL");

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      Last update: 2011-03-24 11:47    [W:0.066 / U:0.048 seconds]
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