diff mbox series

[v1,2/2] ASoC: cs35l41: Read System Name from ACPI _SUB to identify firmware

Message ID 20220622130730.1573747-3-sbinding@opensource.cirrus.com (mailing list archive)
State Superseded
Headers show
Series Read _SUB from ACPI to be able to identify firmware | expand

Commit Message

Stefan Binding June 22, 2022, 1:07 p.m. UTC
When loading firmware, wm_adsp uses a number of parameters to
determine the path of the firmware and tuning files to load.
One of these parameters is system_name.
Add support in cs35l41 to read this system name from the ACPI
_SUB ID in order to uniquely identify the firmware and tuning
mapped to a particular system.

Signed-off-by: Stefan Binding <sbinding@opensource.cirrus.com>
---
 sound/soc/codecs/cs35l41.c | 27 +++++++++++++++++++++++++++
 1 file changed, 27 insertions(+)

Comments

kernel test robot June 23, 2022, 4:01 a.m. UTC | #1
Hi Stefan,

Thank you for the patch! Yet something to improve:

[auto build test ERROR on rafael-pm/linux-next]
[also build test ERROR on broonie-sound/for-next linus/master v5.19-rc3 next-20220622]
[If your patch is applied to the wrong git tree, kindly drop us a note.
And when submitting patch, we suggest to use '--base' as documented in
https://git-scm.com/docs/git-format-patch]

url:    https://github.com/intel-lab-lkp/linux/commits/Stefan-Binding/Read-_SUB-from-ACPI-to-be-able-to-identify-firmware/20220622-211004
base:   https://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm.git linux-next
config: sparc64-randconfig-r002-20220622 (https://download.01.org/0day-ci/archive/20220623/202206231108.xPflWTbR-lkp@intel.com/config)
compiler: sparc64-linux-gcc (GCC) 11.3.0
reproduce (this is a W=1 build):
        wget https://raw.githubusercontent.com/intel/lkp-tests/master/sbin/make.cross -O ~/bin/make.cross
        chmod +x ~/bin/make.cross
        # https://github.com/intel-lab-lkp/linux/commit/338eadc59e88d60759ea445011a6537222b233e3
        git remote add linux-review https://github.com/intel-lab-lkp/linux
        git fetch --no-tags linux-review Stefan-Binding/Read-_SUB-from-ACPI-to-be-able-to-identify-firmware/20220622-211004
        git checkout 338eadc59e88d60759ea445011a6537222b233e3
        # save the config file
        mkdir build_dir && cp config build_dir/.config
        COMPILER_INSTALL_PATH=$HOME/0day COMPILER=gcc-11.3.0 make.cross W=1 O=build_dir ARCH=sparc64 SHELL=/bin/bash sound/soc/codecs/

If you fix the issue, kindly add following tag where applicable
Reported-by: kernel test robot <lkp@intel.com>

All errors (new ones prefixed by >>):

   sound/soc/codecs/cs35l41.c: In function 'cs35l41_probe_acpi':
>> sound/soc/codecs/cs35l41.c:1157:32: error: invalid use of undefined type 'struct acpi_device'
    1157 |         ret = acpi_get_sub(adev->handle, sub, sizeof(sub));
         |                                ^~


vim +1157 sound/soc/codecs/cs35l41.c

  1145	
  1146	static int cs35l41_probe_acpi(struct cs35l41_private *cs35l41)
  1147	{
  1148		struct acpi_device *adev;
  1149		int ret;
  1150		char sub[ACPI_MAX_SUB_BUF_SIZE];
  1151	
  1152		adev = ACPI_COMPANION(cs35l41->dev);
  1153		/* If there is no ACPI_COMPANION, there is no ACPI for this system, return 0 */
  1154		if (!adev)
  1155			return 0;
  1156	
> 1157		ret = acpi_get_sub(adev->handle, sub, sizeof(sub));
  1158		if (ret < 0)
  1159			return ret;
  1160	
  1161		cs35l41->dsp.system_name = devm_kstrdup(cs35l41->dev, sub, GFP_KERNEL);
  1162		if (!cs35l41->dsp.system_name)
  1163			return -ENOMEM;
  1164	
  1165		return 0;
  1166	}
  1167
diff mbox series

Patch

diff --git a/sound/soc/codecs/cs35l41.c b/sound/soc/codecs/cs35l41.c
index 8766e19d85f1..5df04a2ab5a3 100644
--- a/sound/soc/codecs/cs35l41.c
+++ b/sound/soc/codecs/cs35l41.c
@@ -6,6 +6,7 @@ 
 //
 // Author: David Rhodes <david.rhodes@cirrus.com>
 
+#include <linux/acpi.h>
 #include <linux/delay.h>
 #include <linux/err.h>
 #include <linux/init.h>
@@ -1142,6 +1143,28 @@  static int cs35l41_dsp_init(struct cs35l41_private *cs35l41)
 	return ret;
 }
 
+static int cs35l41_probe_acpi(struct cs35l41_private *cs35l41)
+{
+	struct acpi_device *adev;
+	int ret;
+	char sub[ACPI_MAX_SUB_BUF_SIZE];
+
+	adev = ACPI_COMPANION(cs35l41->dev);
+	/* If there is no ACPI_COMPANION, there is no ACPI for this system, return 0 */
+	if (!adev)
+		return 0;
+
+	ret = acpi_get_sub(adev->handle, sub, sizeof(sub));
+	if (ret < 0)
+		return ret;
+
+	cs35l41->dsp.system_name = devm_kstrdup(cs35l41->dev, sub, GFP_KERNEL);
+	if (!cs35l41->dsp.system_name)
+		return -ENOMEM;
+
+	return 0;
+}
+
 int cs35l41_probe(struct cs35l41_private *cs35l41, const struct cs35l41_hw_cfg *hw_cfg)
 {
 	u32 regid, reg_revid, i, mtl_revid, int_status, chipid_match;
@@ -1270,6 +1293,10 @@  int cs35l41_probe(struct cs35l41_private *cs35l41, const struct cs35l41_hw_cfg *
 		goto err;
 	}
 
+	ret = cs35l41_probe_acpi(cs35l41);
+	if (ret < 0)
+		goto err;
+
 	ret = cs35l41_dsp_init(cs35l41);
 	if (ret < 0)
 		goto err;