On Tue, Oct 8, 2019 at 8:06 PM Greg Kroah-Hartman gregkh@linuxfoundation.org wrote:
On Tue, Oct 08, 2019 at 06:11:44PM +0800, Cheng-Yi Chiang wrote:
Add an interface for other driver to query VPD value. This will be used for ASoC machine driver to query calibration data stored in VPD for smart amplifier speaker resistor calibration.
The example usage in ASoC machine driver is like:
#define DSM_CALIB_KEY "dsm_calib" static int load_calibration_data(struct cml_card_private *ctx) { char *data = NULL; int ret; u32 value_len;
/* Read calibration data from VPD. */ ret = vpd_attribute_read(1, DSM_CALIB_KEY, (u8 **)&data, &value_len); /* Parsing of this string...*/}
Signed-off-by: Cheng-Yi Chiang cychiang@chromium.org
I can't take this patch without a real user of this function in the kernel tree at the same time. Please submit it as part of a patch series with that change as well.
Hi Greg, I see. There is an ongoing discussion with Mark in
https://patchwork.kernel.org/patch/11179237/
I will resend this after machine driver is merged, and after codec driver change get sorted out there. Thanks!
thanks,
greg k-h