This patch prepares SKL platform driver to make reuse of legacy HDA codec drivers. It does following things.
use hda_bus instead of hdac_bus in the SKL platform driver to align with the legacy controller driver.
modify snd_hdac_ext_bus_device_init definition to align with snd_hdac_bus_device_init, used by legacy drivers. Memory for hdac_device is allocated by the caller
Signed-off-by: Rakesh Ughreja rakesh.a.ughreja@intel.com --- include/sound/hdaudio_ext.h | 3 ++- sound/hda/ext/hdac_ext_bus.c | 9 ++------- sound/soc/intel/skylake/skl.c | 27 ++++++++++++++++++++++++++- sound/soc/intel/skylake/skl.h | 10 +++++++--- 4 files changed, 37 insertions(+), 12 deletions(-)
diff --git a/include/sound/hdaudio_ext.h b/include/sound/hdaudio_ext.h index 3c30247..c188b80 100644 --- a/include/sound/hdaudio_ext.h +++ b/include/sound/hdaudio_ext.h @@ -9,7 +9,8 @@ int snd_hdac_ext_bus_init(struct hdac_bus *bus, struct device *dev, const struct hdac_io_ops *io_ops);
void snd_hdac_ext_bus_exit(struct hdac_bus *bus); -int snd_hdac_ext_bus_device_init(struct hdac_bus *bus, int addr); +int snd_hdac_ext_bus_device_init(struct hdac_bus *bus, int addr, + struct hdac_device *hdev); void snd_hdac_ext_bus_device_exit(struct hdac_device *hdev); void snd_hdac_ext_bus_device_remove(struct hdac_bus *bus);
diff --git a/sound/hda/ext/hdac_ext_bus.c b/sound/hda/ext/hdac_ext_bus.c index 52f0776..e4bcb76 100644 --- a/sound/hda/ext/hdac_ext_bus.c +++ b/sound/hda/ext/hdac_ext_bus.c @@ -135,16 +135,12 @@ static void default_release(struct device *dev) * * Returns zero for success or a negative error code. */ -int snd_hdac_ext_bus_device_init(struct hdac_bus *bus, int addr) +int snd_hdac_ext_bus_device_init(struct hdac_bus *bus, int addr, + struct hdac_device *hdev) { - struct hdac_device *hdev = NULL; char name[15]; int ret;
- hdev = kzalloc(sizeof(*hdev), GFP_KERNEL); - if (!hdev) - return -ENOMEM; - hdev->bus = bus;
snprintf(name, sizeof(name), "ehdaudio%dD%d", bus->idx, addr); @@ -175,7 +171,6 @@ EXPORT_SYMBOL_GPL(snd_hdac_ext_bus_device_init); void snd_hdac_ext_bus_device_exit(struct hdac_device *hdev) { snd_hdac_device_exit(hdev); - kfree(hdev); } EXPORT_SYMBOL_GPL(snd_hdac_ext_bus_device_exit);
diff --git a/sound/soc/intel/skylake/skl.c b/sound/soc/intel/skylake/skl.c index b99c1d8..c2e9c19 100644 --- a/sound/soc/intel/skylake/skl.c +++ b/sound/soc/intel/skylake/skl.c @@ -35,6 +35,7 @@ #include "skl.h" #include "skl-sst-dsp.h" #include "skl-sst-ipc.h" +#include "../../../pci/hda/hda_codec.h"
static struct skl_machine_pdata skl_dmic_data;
@@ -617,6 +618,8 @@ static int probe_codec(struct hdac_bus *bus, int addr) unsigned int cmd = (addr << 28) | (AC_NODE_ROOT << 20) | (AC_VERB_PARAMETERS << 8) | AC_PAR_VENDOR_ID; unsigned int res = -1; + struct skl *skl = bus_to_skl(bus); + struct hdac_device *hdev;
mutex_lock(&bus->cmd_mutex); snd_hdac_bus_send_cmd(bus, cmd); @@ -626,7 +629,19 @@ static int probe_codec(struct hdac_bus *bus, int addr) return -EIO; dev_dbg(bus->dev, "codec #%d probed OK\n", addr);
- return snd_hdac_ext_bus_device_init(bus, addr); + /* + * FIXME: + * The legacy HDA controller driver allocates data structure + * for hda_codec. Ideally it should allocate only hdac_device + * so that it has no dependency on the data structure of the + * codec driver. If legacy controller driver can be changed this + * code change can be avoided. + */ + hdev = devm_kzalloc(&skl->pci->dev, sizeof(*hdev), GFP_KERNEL); + if (!hdev) + return -ENOMEM; + + return snd_hdac_ext_bus_device_init(bus, addr, hdev); }
/* Codec initialization */ @@ -751,6 +766,7 @@ static int skl_create(struct pci_dev *pci, { struct skl *skl; struct hdac_bus *bus; + struct hda_bus *hbus;
int err;
@@ -766,6 +782,7 @@ static int skl_create(struct pci_dev *pci, return -ENOMEM; }
+ hbus = skl_to_hbus(skl); bus = skl_to_bus(skl); snd_hdac_ext_bus_init(bus, &pci->dev, &bus_core_ops, io_ops); bus->use_posbuf = 1; @@ -773,6 +790,14 @@ static int skl_create(struct pci_dev *pci, INIT_WORK(&skl->probe_work, skl_probe_work); bus->bdl_pos_adj = 0;
+ /* + * TODO: other parameters can be taken the way it is taken by + * legacy HDA driver + */ + mutex_init(&hbus->prepare_mutex); + hbus->pci = pci; + hbus->mixer_assigned = -1; + *rskl = skl;
return 0; diff --git a/sound/soc/intel/skylake/skl.h b/sound/soc/intel/skylake/skl.h index f3a48a4..777508f 100644 --- a/sound/soc/intel/skylake/skl.h +++ b/sound/soc/intel/skylake/skl.h @@ -26,6 +26,7 @@ #include <sound/soc.h> #include "skl-nhlt.h" #include "skl-ssp-clk.h" +#include "../../../pci/hda/hda_codec.h"
#define SKL_SUSPEND_DELAY 2000
@@ -63,7 +64,7 @@ struct skl_fw_config { };
struct skl { - struct hdac_bus hbus; + struct hda_bus hbus; struct pci_dev *pci;
unsigned int init_done:1; /* delayed init status */ @@ -96,8 +97,11 @@ struct skl { struct skl_fw_config cfg; };
-#define skl_to_bus(s) (&(s)->hbus) -#define bus_to_skl(bus) container_of(bus, struct skl, hbus) +#define skl_to_bus(s) (&(s)->hbus.core) +#define bus_to_skl(bus) container_of(bus, struct skl, hbus.core) + +#define skl_to_hbus(s) (&(s)->hbus) +#define hbus_to_skl(hbus) container_of(hbus, struct skl, hbus)
/* to pass dai dma data */ struct skl_dma_params {