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ASoC: wm_adsp: add support for DSP region lock

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Newer ADSP2V2 codecs include a memory protection unit that can
be set to trap illegal accesses. When enabling an ADSPV2 core we
must configure the memory region traps so that the firmware can
access its own memory.

Signed-off-by: Mayuresh Kulkarni <mkulkarni@opensource.wolfsonmicro.com>
Signed-off-by: Nikesh Oswal <Nikesh.Oswal@wolfsonmicro.com>
Signed-off-by: Charles Keepax <ckeepax@opensource.wolfsonmicro.com>
Signed-off-by: Richard Fitzgerald <rf@opensource.wolfsonmicro.com>
Signed-off-by: Mark Brown <broonie@kernel.org>
This commit is contained in:
Mayuresh Kulkarni
2017-04-05 11:08:00 +01:00
committed by Mark Brown
parent e1ea1879f2
commit 51a2c944ea
2 changed files with 160 additions and 0 deletions
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23
sound/soc/codecs/wm_adsp.h
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@@ -23,6 +23,23 @@
#define WM_ADSP_COMPR_OK 0
#define WM_ADSP_COMPR_VOICE_TRIGGER 1
#define WM_ADSP2_REGION_0 BIT(0)
#define WM_ADSP2_REGION_1 BIT(1)
#define WM_ADSP2_REGION_2 BIT(2)
#define WM_ADSP2_REGION_3 BIT(3)
#define WM_ADSP2_REGION_4 BIT(4)
#define WM_ADSP2_REGION_5 BIT(5)
#define WM_ADSP2_REGION_6 BIT(6)
#define WM_ADSP2_REGION_7 BIT(7)
#define WM_ADSP2_REGION_8 BIT(8)
#define WM_ADSP2_REGION_9 BIT(9)
#define WM_ADSP2_REGION_1_9 (WM_ADSP2_REGION_1 | \
WM_ADSP2_REGION_2 | WM_ADSP2_REGION_3 | \
WM_ADSP2_REGION_4 | WM_ADSP2_REGION_5 | \
WM_ADSP2_REGION_6 | WM_ADSP2_REGION_7 | \
WM_ADSP2_REGION_8 | WM_ADSP2_REGION_9)
#define WM_ADSP2_REGION_ALL (WM_ADSP2_REGION_0 | WM_ADSP2_REGION_1_9)
struct wm_adsp_region {
int type;
unsigned int base;
@@ -76,6 +93,8 @@ struct wm_adsp {
struct mutex pwr_lock;
unsigned int lock_regions;
#ifdef CONFIG_DEBUG_FS
struct dentry *debugfs_root;
char *wmfw_file_name;
@@ -114,6 +133,10 @@ int wm_adsp1_event(struct snd_soc_dapm_widget *w,
int wm_adsp2_early_event(struct snd_soc_dapm_widget *w,
struct snd_kcontrol *kcontrol, int event,
unsigned int freq);
int wm_adsp2_lock(struct wm_adsp *adsp, unsigned int regions);
irqreturn_t wm_adsp2_bus_error(struct wm_adsp *adsp);
int wm_adsp2_event(struct snd_soc_dapm_widget *w,
struct snd_kcontrol *kcontrol, int event);