sound/soc/sdca/sdca_device.c

   1 // SPDX-License-Identifier: (GPL-2.0 OR BSD-3-Clause)
   2 // Copyright(c) 2024 Intel Corporation
   3
   4 /*
   5  * The MIPI SDCA specification is available for public downloads at
   6  * https://www.mipi.org/mipi-sdca-v1-0-download
   7  */
   8
   9 #include <linux/acpi.h>
  10 #include <linux/soundwire/sdw.h>
  11 #include <sound/sdca.h>
  12 #include <sound/sdca_function.h>
  13
  14 void sdca_lookup_interface_revision(struct sdw_slave *slave)
  15 {
  16         struct fwnode_handle *fwnode = slave->dev.fwnode;
  17
  18         /*
  19          * if this property is not present, then the sdca_interface_revision will
  20          * remain zero, which will be considered as 'not defined' or 'invalid'.
  21          */
  22         fwnode_property_read_u32(fwnode, "mipi-sdw-sdca-interface-revision",
  23                                  &slave->sdca_data.interface_revision);
  24 }
  25 EXPORT_SYMBOL_NS(sdca_lookup_interface_revision, "SND_SOC_SDCA");
  26
  27 static bool sdca_device_quirk_rt712_vb(struct sdw_slave *slave)
  28 {
  29         struct sdw_slave_id *id = &slave->id;
  30         int i;
  31
  32         /*
  33          * The RT712_VA relies on the v06r04 draft, and the
  34          * RT712_VB on a more recent v08r01 draft.
  35          */
  36         if (slave->sdca_data.interface_revision < 0x0801)
  37                 return false;
  38
  39         if (id->mfg_id != 0x025d)
  40                 return false;
  41
  42         if (id->part_id != 0x712 &&
  43             id->part_id != 0x713 &&
  44             id->part_id != 0x716 &&
  45             id->part_id != 0x717)
  46                 return false;
  47
  48         for (i = 0; i < slave->sdca_data.num_functions; i++) {
  49                 if (slave->sdca_data.sdca_func[i].type ==
  50                     SDCA_FUNCTION_TYPE_SMART_MIC)
  51                         return true;
  52         }
  53
  54         return false;
  55 }
  56
  57 bool sdca_device_quirk_match(struct sdw_slave *slave, enum sdca_quirk quirk)
  58 {
  59         switch (quirk) {
  60         case SDCA_QUIRKS_RT712_VB:
  61                 return sdca_device_quirk_rt712_vb(slave);
  62         default:
  63                 break;
  64         }
  65         return false;
  66 }
  67 EXPORT_SYMBOL_NS(sdca_device_quirk_match, "SND_SOC_SDCA");