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Commit 59064c5c authored by Patrick Lai's avatar Patrick Lai Committed by Gerrit - the friendly Code Review server
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ASoC: msm: Add debug Kconfig for LPASS audio driver 



Introduce new Kconfig for purpose of enabling LPASS
audio driver debugging utilities. Initial utility is
to induce kernel panic upon encountering error from
audio components in ADSP.

CRs-fixed: 968775
Change-Id: I9f802f32892d55be83d4b8a6e861ab09f6336093
Signed-off-by: default avatarPatrick Lai <plai@codeaurora.org>
parent 2247e3be

sound/soc/msm/Kconfig

+8 −0
Original line number Diff line number Diff line
@@ -21,6 +21,14 @@ config SND_SOC_QDSP6V2 
	 audio drivers. This includes q6asm, q6adm,

	 q6afe interfaces to DSP using apr.



config SND_SOC_QDSP_DEBUG

	bool "QDSP Audio Driver Debug Feature"

	help

	 Configuration to enable debugging utilities for

	 QDSP6 based audio drivers. One debugging utility

	 is inducing kernel panic upon encountering critical

	 errors from DSP audio modules



config DOLBY_DAP

	bool "Enable Dolby DAP"

	depends on SND_SOC_MSM_QDSP6V2_INTF

sound/soc/msm/qdsp6v2/adsp_err.c

+56 −0
Original line number Diff line number Diff line
@@ -12,6 +12,8 @@ 
 */



#include <linux/errno.h>

#include <linux/uaccess.h>

#include <linux/debugfs.h>

#include <sound/apr_audio-v2.h>
@@ -61,6 +63,33 @@ 
/* Unexpected error code. */

#define ADSP_ERR_MAX_STR      "ADSP_ERR_MAX"



#ifdef CONFIG_SND_SOC_QDSP_DEBUG

static bool adsp_err_panic;



#ifdef CONFIG_DEBUG_FS

static struct dentry *debugfs_adsp_err;



static ssize_t adsp_err_debug_write(struct file *filp,

	const char __user *ubuf, size_t cnt, loff_t *ppos)

{

	char cmd;



	if (copy_from_user(&cmd, ubuf, 1))

		return -EFAULT;



	if (cmd == '0')

		adsp_err_panic = false;

	else

		adsp_err_panic = true;



	return cnt;

}



static const struct file_operations adsp_err_debug_ops = {

	.write = adsp_err_debug_write,

};

#endif

#endif



struct adsp_err_code {

	int		lnx_err_code;
@@ -94,8 +123,20 @@ static struct adsp_err_code adsp_err_code_info[ADSP_ERR_MAX+1] = { 
	{ -EADV, ADSP_ERR_MAX_STR},

};



#ifdef CONFIG_SND_SOC_QDSP_DEBUG

static inline void adsp_err_check_panic(u32 adsp_error)

{

	if (adsp_err_panic && adsp_error != ADSP_EALREADY)

		panic("%s: encounter adsp_err=0x%x\n", __func__, adsp_error);

}

#else

static inline void adsp_err_check_panic(u32 adsp_error) {}

#endif



int adsp_err_get_lnx_err_code(u32 adsp_error)

{

	adsp_err_check_panic(adsp_error);



	if (adsp_error > ADSP_ERR_MAX)

		return adsp_err_code_info[ADSP_ERR_MAX].lnx_err_code;

	else
@@ -109,3 +150,18 @@ char *adsp_err_get_err_str(u32 adsp_error) 
	else

		return adsp_err_code_info[adsp_error].adsp_err_str;

}



#if defined(CONFIG_SND_SOC_QDSP_DEBUG) && defined(CONFIG_DEBUG_FS)

static int __init adsp_err_init(void)

{





	debugfs_adsp_err = debugfs_create_file("msm_adsp_audio_debug",

					       S_IFREG | S_IRUGO, NULL, NULL,

					       &adsp_err_debug_ops);



	return 0;

}



device_initcall(adsp_err_init);

#endif