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authorKees Cook <kees+treewide@kernel.org>2026-09-02 15:31:14 -0700
committerKees Cook <kees@kernel.org>2026-09-04 21:37:00 -0700
commit3a2c4d55e32ad65efebdb6de44eef3bfa08bb49d (patch)
treec65086f9bdcd48c6360fb7cb4598bca084da1f32 /include/sound/hda_chmap.h
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treewide: refresh kmalloc_obj() conversionsgrafted
This is another run of the Coccinelle script for converting kmalloc() family of allocations to kmalloc_obj() via the existing rules in scripts/coccinelle/api/kmalloc_objs.cocci This catches both the set of kmalloc() uses added since the first kmalloc_obj() conversions in v7.0 and adds a large group missed in the first pass due to Coccinelle not interacting well with the cleanup.h scoped_...() family of macros[1]. I worked around this with spatch's "--macro-file" argument to a file with all the scoped_...() macros mapped to Coccinelle's YACFE_ITERATOR[2] as that was the closest viable control flow indicator I could find. Build tested allmodconfig on x86, arm64, arm, loongarch, mips, powerpc, riscv, and s390 with no new warnings. Link: https://lore.kernel.org/lkml/202609021314.8A9C0B8@keescook/ [1] Link: https://github.com/coccinelle/coccinelle/blob/master/standard.h [2] Signed-off-by: Kees Cook <kees+treewide@kernel.org>
Diffstat (limited to 'include/sound/hda_chmap.h')
-rw-r--r--include/sound/hda_chmap.h79
1 files changed, 79 insertions, 0 deletions
diff --git a/include/sound/hda_chmap.h b/include/sound/hda_chmap.h
new file mode 100644
index 000000000..e508f3192
--- /dev/null
+++ b/include/sound/hda_chmap.h
@@ -0,0 +1,79 @@
+/* SPDX-License-Identifier: GPL-2.0 */
+/*
+ * For multichannel support
+ */
+
+#ifndef __SOUND_HDA_CHMAP_H
+#define __SOUND_HDA_CHMAP_H
+
+#include <sound/pcm.h>
+#include <sound/hdaudio.h>
+
+
+#define SND_PRINT_CHANNEL_ALLOCATION_ADVISED_BUFSIZE 80
+
+struct hdac_cea_channel_speaker_allocation {
+ int ca_index;
+ int speakers[8];
+
+ /* derived values, just for convenience */
+ int channels;
+ int spk_mask;
+};
+struct hdac_chmap;
+
+struct hdac_chmap_ops {
+ /*
+ * Helpers for producing the channel map TLVs. These can be overridden
+ * for devices that have non-standard mapping requirements.
+ */
+ int (*chmap_cea_alloc_validate_get_type)(struct hdac_chmap *chmap,
+ struct hdac_cea_channel_speaker_allocation *cap, int channels);
+ void (*cea_alloc_to_tlv_chmap)(struct hdac_chmap *hchmap,
+ struct hdac_cea_channel_speaker_allocation *cap,
+ unsigned int *chmap, int channels);
+
+ /* check that the user-given chmap is supported */
+ int (*chmap_validate)(struct hdac_chmap *hchmap, int ca,
+ int channels, unsigned char *chmap);
+
+ int (*get_spk_alloc)(struct hdac_device *hdac, int pcm_idx);
+
+ void (*get_chmap)(struct hdac_device *hdac, int pcm_idx,
+ unsigned char *chmap);
+ void (*set_chmap)(struct hdac_device *hdac, int pcm_idx,
+ unsigned char *chmap, int prepared);
+ bool (*is_pcm_attached)(struct hdac_device *hdac, int pcm_idx);
+
+ /* get and set channel assigned to each HDMI ASP (audio sample packet) slot */
+ int (*pin_get_slot_channel)(struct hdac_device *codec,
+ hda_nid_t pin_nid, int asp_slot);
+ int (*pin_set_slot_channel)(struct hdac_device *codec,
+ hda_nid_t pin_nid, int asp_slot, int channel);
+ void (*set_channel_count)(struct hdac_device *codec,
+ hda_nid_t cvt_nid, int chs);
+};
+
+struct hdac_chmap {
+ unsigned int channels_max; /* max over all cvts */
+ struct hdac_chmap_ops ops;
+ struct hdac_device *hdac;
+};
+
+void snd_hdac_register_chmap_ops(struct hdac_device *hdac,
+ struct hdac_chmap *chmap);
+int snd_hdac_channel_allocation(struct hdac_device *hdac, int spk_alloc,
+ int channels, bool chmap_set,
+ bool non_pcm, unsigned char *map);
+int snd_hdac_get_active_channels(int ca);
+void snd_hdac_setup_channel_mapping(struct hdac_chmap *chmap,
+ hda_nid_t pin_nid, bool non_pcm, int ca,
+ int channels, unsigned char *map,
+ bool chmap_set);
+void snd_hdac_print_channel_allocation(int spk_alloc, char *buf, int buflen);
+struct hdac_cea_channel_speaker_allocation *snd_hdac_get_ch_alloc_from_ca(int ca);
+int snd_hdac_chmap_to_spk_mask(unsigned char c);
+int snd_hdac_spk_to_chmap(int spk);
+int snd_hdac_add_chmap_ctls(struct snd_pcm *pcm, int pcm_idx,
+ struct hdac_chmap *chmap);
+#endif /* __SOUND_HDA_CHMAP_H */