Hi
On 07/19/2013 03:33 PM, Michael Trimarchi wrote:
> Hi
>
> I'm trying to understand what is wrong here with this small
> driver.
>
> /* McBSP1 */
> OMAP4_MUX(ABE_MCBSP1_CLKX, OMAP_MUX_MODE0 | OMAP_PIN_INPUT),
> OMAP4_MUX(ABE_MCBSP1_DR, OMAP_MUX_MODE0 | OMAP_PIN_INPUT_PULLDOWN),
> OMAP4_MUX(ABE_MCBSP1_DX, OMAP_MUX_MODE0 | OMAP_PIN_OUTPUT |
> OMAP_PULL_ENA),
> OMAP4_MUX(ABE_MCBSP1_FSX, OMAP_MUX_MODE0 | OMAP_PIN_INPUT),
>
> kernel 3.8.0
>
I have fixed my problem ;). I will send a description about it
Michael
> [ 107.276702] omap-mcbsp omap-mcbsp.1: Configuring McBSP1 phys_base: 0x40122000
> [ 107.283691] omap-mcbsp omap-mcbsp.1: **** McBSP1 regs ****
> [ 107.283721] omap-mcbsp omap-mcbsp.1: DRR2: 0x88260a09
> [ 107.283721] omap-mcbsp omap-mcbsp.1: DRR1: 0x0000
> [ 107.283752] omap-mcbsp omap-mcbsp.1: DXR2: 0x0000
> [ 107.283752] omap-mcbsp omap-mcbsp.1: DXR1: 0x0000
> [ 107.283752] omap-mcbsp omap-mcbsp.1: SPCR2: 0x0233
> [ 107.283782] omap-mcbsp omap-mcbsp.1: SPCR1: 0x0030
> [ 107.283782] omap-mcbsp omap-mcbsp.1: RCR2: 0x80a1
> [ 107.283813] omap-mcbsp omap-mcbsp.1: RCR1: 0x00a0
> [ 107.283813] omap-mcbsp omap-mcbsp.1: XCR2: 0x80a1
> [ 107.283813] omap-mcbsp omap-mcbsp.1: XCR1: 0x00a0
> [ 107.283843] omap-mcbsp omap-mcbsp.1: SRGR2: 0x203f
> [ 107.283843] omap-mcbsp omap-mcbsp.1: SRGR1: 0x1f00
> [ 107.283843] omap-mcbsp omap-mcbsp.1: PCR0: 0x008f
> [ 107.283874] omap-mcbsp omap-mcbsp.1: ***********************
> [ 119.926177] omap-dma-engine omap-dma-engine: freeing channel for 33
>
> Well basically it doesn't start the transfer. The clock is provided
> using the clkx pin. clkx is rate * channel * bitsxword and come from
> the codec.
>
> What is wrong? (I know that how I register the card is deprecated)
>
> Regards Michael
>
> /*
> * dacmax.c -- SoC audio for pandaboard demokit
> *
> * Author: Michael Trimarchi <michael@xxxxxxxxxxxxxxxxxxxx>
> *
> * Based on:
> * Author: Misael Lopez Cruz <x0052729@xxxxxx>
> *
> * This program is free software; you can redistribute it and/or
> * modify it under the terms of the GNU General Public License
> * version 2 as published by the Free Software Foundation.
> *
> * 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
> *
> */
>
> #include <linux/clk.h>
> #include <linux/platform_device.h>
> #include <sound/core.h>
> #include <sound/pcm.h>
> #include <sound/pcm_params.h>
> #include <sound/soc.h>
>
> #include <asm/mach-types.h>
> #include <linux/gpio.h>
> #include <linux/platform_data/asoc-ti-mcbsp.h>
>
> #include <linux/module.h>
> #include "omap-mcbsp.h"
>
> static struct snd_soc_card snd_soc_dacmax;
>
> static int dacmax_hw_params(struct snd_pcm_substream *substream,
> struct snd_pcm_hw_params *params)
> {
> int ret;
> struct snd_soc_pcm_runtime *rtd = substream->private_data;
> struct snd_soc_dai *cpu_dai = rtd->cpu_dai;
>
> pr_info("%s: setting the params\n", __func__);
>
> ret = snd_soc_dai_set_sysclk(cpu_dai, OMAP_MCBSP_SYSCLK_CLKX_EXT, 0,
> SND_SOC_CLOCK_IN);
> if (ret < 0) {
> printk(KERN_ERR "can't set CPU system clock " \
> "OMAP_MCBSP_CLKR_SRC_CLKX\n");
> }
>
> return 0;
> }
>
> static struct snd_soc_ops dacmax_ops = {
> .hw_params = dacmax_hw_params,
> };
>
> static int dacmax_init(struct snd_soc_pcm_runtime *rtd)
> {
> pr_info("%s: INIT\n", __func__);
> return 0;
> }
>
> /* Digital audio interface glue - connects codec <--> CPU */
> static struct snd_soc_dai_link dacmax_dai = {
> .name = "DACMAX-I2S",
> .stream_name = "DACMAX-Audio",
> .cpu_dai_name = "omap-mcbsp.1",
> .codec_dai_name = "pcm1792a-hifi",
> .platform_name = "omap-pcm-audio",
> .codec_name = "pcm1792a",
> .dai_fmt = SND_SOC_DAIFMT_I2S | SND_SOC_DAIFMT_NB_NF |
> SND_SOC_DAIFMT_CBM_CFM,
> .init = dacmax_init,
> .ops = &dacmax_ops,
> };
>
> /* Audio machine driver */
> static struct snd_soc_card snd_soc_dacmax = {
> .name = "DACMAX",
> .driver_name = "OMAP4",
> .long_name = "TI OMAP4 Board",
> .dai_link = &dacmax_dai,
> .num_links = 1,
> };
>
> static struct platform_device *dacmax_snd_device;
>
> static int __init dacmax_soc_init(void)
> {
> int ret;
>
> printk(KERN_INFO "DACMAX SoC init\n");
>
> dacmax_snd_device = platform_device_alloc("soc-audio", -1);
> if (!dacmax_snd_device) {
> printk(KERN_ERR "Platform device allocation failed\n");
> return -ENOMEM;
> }
>
> platform_set_drvdata(dacmax_snd_device, &snd_soc_dacmax);
>
> ret = platform_device_add(dacmax_snd_device);
> if (ret)
> goto err1;
>
> return 0;
>
> err1:
> printk(KERN_ERR "Unable to add platform device\n");
> platform_device_put(dacmax_snd_device);
>
> return ret;
> }
> module_init(dacmax_soc_init);
>
> static void __exit dacmax_soc_exit(void)
> {
> platform_device_unregister(dacmax_snd_device);
> }
> module_exit(dacmax_soc_exit);
>
> MODULE_AUTHOR("Michael Trimarchi <michael@xxxxxxxxxxxxxxxxxxxx>");
> MODULE_DESCRIPTION("ALSA SoC DACMAX");
> MODULE_LICENSE("GPL");
>
--
| Michael Nazzareno Trimarchi Amarula Solutions BV |
| COO - Founder Cruquiuskade 47 |
| +31(0)851119172 Amsterdam 1018 AM NL |
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