| lists.openwall.net | lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC | |
|
Open Source and information security mailing list archives
| ||
|
Message-ID: <20210730151844.7873-17-vitalyr@opensource.cirrus.com>
Date: Fri, 30 Jul 2021 16:18:33 +0100
From: Vitaly Rodionov <vitalyr@...nsource.cirrus.com>
To: Jaroslav Kysela <perex@...ex.cz>, Takashi Iwai <tiwai@...e.com>
CC: <alsa-devel@...a-project.org>, <patches@...nsource.cirrus.com>,
<linux-kernel@...r.kernel.org>,
Lucas Tanure <tanureal@...nsource.cirrus.com>
Subject: [PATCH v3 16/27] ALSA: hda/cs8409: Support i2c bulk read/write functions
From: Lucas Tanure <tanureal@...nsource.cirrus.com>
This allows mutex locks to be moved into i2c functions, as
the bulk read/write functions can lock/unlock themselves to
prevent interruption of sequence reads/writes.
Signed-off-by: Lucas Tanure <tanureal@...nsource.cirrus.com>
Signed-off-by: Vitaly Rodionov <vitalyr@...nsource.cirrus.com>
---
Changes in v2:
- No changes
Changes in v3:
- No changes
sound/pci/hda/patch_cs8409-tables.c | 3 +-
sound/pci/hda/patch_cs8409.c | 208 +++++++++++++++++-----------
sound/pci/hda/patch_cs8409.h | 8 +-
3 files changed, 136 insertions(+), 83 deletions(-)
diff --git a/sound/pci/hda/patch_cs8409-tables.c b/sound/pci/hda/patch_cs8409-tables.c
index b03ddef2a25f..0f2fd8bb92bf 100644
--- a/sound/pci/hda/patch_cs8409-tables.c
+++ b/sound/pci/hda/patch_cs8409-tables.c
@@ -146,7 +146,7 @@ const struct hda_pintbl cs8409_cs42l42_pincfgs[] = {
};
/* Vendor specific HW configuration for CS42L42 */
-const struct cs8409_i2c_param cs42l42_init_reg_seq[] = {
+const struct cs8409_i2c_param cs42l42_init_reg_seq[CS42L42_INIT_REG_SEQ_SIZE] = {
{ 0x1010, 0xB0 },
{ 0x1D01, 0x00 },
{ 0x1D02, 0x06 },
@@ -206,7 +206,6 @@ const struct cs8409_i2c_param cs42l42_init_reg_seq[] = {
{ 0x1320, 0xff },
{ 0x1b79, 0xff },
{ 0x1b7a, 0xff },
- {} /* Terminator */
};
/* Vendor specific hw configuration for CS8409 */
diff --git a/sound/pci/hda/patch_cs8409.c b/sound/pci/hda/patch_cs8409.c
index a6aaeabd2279..9569c06bdc48 100644
--- a/sound/pci/hda/patch_cs8409.c
+++ b/sound/pci/hda/patch_cs8409.c
@@ -81,13 +81,13 @@ static void cs8409_disable_i2c_clock(struct work_struct *work)
{
struct cs8409_spec *spec = container_of(work, struct cs8409_spec, i2c_clk_work.work);
- mutex_lock(&spec->cs8409_i2c_mux);
+ mutex_lock(&spec->i2c_mux);
if (spec->i2c_clck_enabled) {
cs8409_vendor_coef_set(spec->codec, 0x0,
cs8409_vendor_coef_get(spec->codec, 0x0) & 0xfffffff7);
spec->i2c_clck_enabled = 0;
}
- mutex_unlock(&spec->cs8409_i2c_mux);
+ mutex_unlock(&spec->i2c_mux);
}
/*
@@ -180,12 +180,12 @@ static int cs8409_i2c_set_page(struct hda_codec *codec, unsigned int i2c_reg)
* cs8409_i2c_read - CS8409 I2C Read.
* @codec: the codec instance
* @i2c_address: I2C Address
- * @i2c_reg: Register to read
+ * @addr: Register to read
*
* CS8409 I2C Read.
* Returns negative on error, otherwise returns read value in bits 0-7.
*/
-static int cs8409_i2c_read(struct hda_codec *codec, unsigned int i2c_address, unsigned int i2c_reg)
+static int cs8409_i2c_read(struct hda_codec *codec, unsigned int i2c_address, unsigned int addr)
{
struct cs8409_spec *spec = codec->spec;
unsigned int i2c_reg_data;
@@ -194,41 +194,90 @@ static int cs8409_i2c_read(struct hda_codec *codec, unsigned int i2c_address, un
if (spec->cs42l42_suspended)
return -EPERM;
+ mutex_lock(&spec->i2c_mux);
cs8409_enable_i2c_clock(codec);
cs8409_set_i2c_dev_addr(codec, i2c_address);
- if (cs8409_i2c_set_page(codec, i2c_reg)) {
+ if (cs8409_i2c_set_page(codec, addr)) {
codec_err(codec, "%s() Paged Transaction Failed 0x%02x : 0x%04x\n",
- __func__, i2c_address, i2c_reg);
+ __func__, i2c_address, addr);
return -EIO;
}
- i2c_reg_data = (i2c_reg << 8) & 0x0ffff;
+ i2c_reg_data = (addr << 8) & 0x0ffff;
cs8409_vendor_coef_set(codec, CS8409_I2C_QREAD, i2c_reg_data);
- if (cs8409_i2c_wait_complete(codec) < 0) {
- codec_err(codec, "%s() Transaction Failed 0x%02x : 0x%04x\n",
- __func__, i2c_address, i2c_reg);
- return -EIO;
- }
+ if (cs8409_i2c_wait_complete(codec) < 0)
+ goto error;
/* Register in bits 15-8 and the data in 7-0 */
read_data = cs8409_vendor_coef_get(codec, CS8409_I2C_QREAD);
+ mutex_unlock(&spec->i2c_mux);
return read_data & 0x0ff;
+
+error:
+ mutex_unlock(&spec->i2c_mux);
+ codec_err(codec, "%s() Failed 0x%02x : 0x%04x\n", __func__, i2c_address, addr);
+ return -EIO;
+}
+
+/**
+ * cs8409_i2c_bulk_read - CS8409 I2C Read Sequence.
+ * @codec: the codec instance
+ * @seq: Register Sequence to read
+ * @count: Number of registeres to read
+ *
+ * Returns negative on error, values are read into value element of cs8409_i2c_param sequence.
+ */
+static int cs8409_i2c_bulk_read(struct hda_codec *codec, unsigned int i2c_address,
+ struct cs8409_i2c_param *seq, int count)
+{
+ struct cs8409_spec *spec = codec->spec;
+ unsigned int i2c_reg_data;
+ int i;
+
+ if (spec->cs42l42_suspended)
+ return -EPERM;
+
+ mutex_lock(&spec->i2c_mux);
+ cs8409_set_i2c_dev_addr(codec, i2c_address);
+
+ for (i = 0; i < count; i++) {
+ cs8409_enable_i2c_clock(codec);
+ if (cs8409_i2c_set_page(codec, seq[i].addr))
+ goto error;
+
+ i2c_reg_data = (seq[i].addr << 8) & 0x0ffff;
+ cs8409_vendor_coef_set(codec, CS8409_I2C_QREAD, i2c_reg_data);
+
+ if (cs8409_i2c_wait_complete(codec) < 0)
+ goto error;
+
+ seq[i].value = cs8409_vendor_coef_get(codec, CS8409_I2C_QREAD) & 0xff;
+ }
+
+ mutex_unlock(&spec->i2c_mux);
+
+ return 0;
+
+error:
+ mutex_unlock(&spec->i2c_mux);
+ codec_err(codec, "I2C Bulk Write Failed 0x%02x\n", i2c_address);
+ return -EIO;
}
/**
* cs8409_i2c_write - CS8409 I2C Write.
* @codec: the codec instance
* @i2c_address: I2C Address
- * @i2c_reg: Register to write to
- * @i2c_data: Data to write
+ * @addr: Register to write to
+ * @value: Data to write
*
* CS8409 I2C Write.
* Returns negative on error, otherwise returns 0.
*/
-static int cs8409_i2c_write(struct hda_codec *codec, unsigned int i2c_address, unsigned int i2c_reg,
- unsigned int i2c_data)
+static int cs8409_i2c_write(struct hda_codec *codec, unsigned int i2c_address, unsigned int addr,
+ unsigned int value)
{
struct cs8409_spec *spec = codec->spec;
unsigned int i2c_reg_data;
@@ -236,25 +285,73 @@ static int cs8409_i2c_write(struct hda_codec *codec, unsigned int i2c_address, u
if (spec->cs42l42_suspended)
return -EPERM;
+ mutex_lock(&spec->i2c_mux);
+
cs8409_enable_i2c_clock(codec);
cs8409_set_i2c_dev_addr(codec, i2c_address);
- if (cs8409_i2c_set_page(codec, i2c_reg)) {
+ if (cs8409_i2c_set_page(codec, addr)) {
codec_err(codec, "%s() Paged Transaction Failed 0x%02x : 0x%04x\n",
- __func__, i2c_address, i2c_reg);
+ __func__, i2c_address, addr);
return -EIO;
}
- i2c_reg_data = ((i2c_reg << 8) & 0x0ff00) | (i2c_data & 0x0ff);
+ i2c_reg_data = ((addr << 8) & 0x0ff00) | (value & 0x0ff);
cs8409_vendor_coef_set(codec, CS8409_I2C_QWRITE, i2c_reg_data);
- if (cs8409_i2c_wait_complete(codec) < 0) {
- codec_err(codec, "%s() Transaction Failed 0x%02x : 0x%04x\n",
- __func__, i2c_address, i2c_reg);
- return -EIO;
+ if (cs8409_i2c_wait_complete(codec) < 0)
+ goto error;
+
+ mutex_unlock(&spec->i2c_mux);
+ return 0;
+
+error:
+ mutex_unlock(&spec->i2c_mux);
+ codec_err(codec, "%s() Failed 0x%02x : 0x%04x\n", __func__, i2c_address, addr);
+ return -EIO;
+}
+
+/**
+ * cs8409_i2c_bulk_write - CS8409 I2C Write Sequence.
+ * @codec: the codec instance
+ * @seq: Register Sequence to write
+ * @count: Number of registeres to write
+ *
+ * Returns negative on error.
+ */
+static int cs8409_i2c_bulk_write(struct hda_codec *codec, unsigned int i2c_address,
+ const struct cs8409_i2c_param *seq, int count)
+{
+ struct cs8409_spec *spec = codec->spec;
+ unsigned int i2c_reg_data;
+ int i;
+
+ if (spec->cs42l42_suspended)
+ return -EPERM;
+
+ mutex_lock(&spec->i2c_mux);
+ cs8409_set_i2c_dev_addr(codec, i2c_address);
+
+ for (i = 0; i < count; i++) {
+ cs8409_enable_i2c_clock(codec);
+ if (cs8409_i2c_set_page(codec, seq[i].addr))
+ goto error;
+
+ i2c_reg_data = ((seq[i].addr << 8) & 0x0ff00) | (seq[i].value & 0x0ff);
+ cs8409_vendor_coef_set(codec, CS8409_I2C_QWRITE, i2c_reg_data);
+
+ if (cs8409_i2c_wait_complete(codec) < 0)
+ goto error;
}
+ mutex_unlock(&spec->i2c_mux);
+
return 0;
+
+error:
+ mutex_unlock(&spec->i2c_mux);
+ codec_err(codec, "I2C Bulk Write Failed 0x%02x\n", i2c_address);
+ return -EIO;
}
int cs8409_cs42l42_volume_info(struct snd_kcontrol *kctrl, struct snd_ctl_elem_info *uinfo)
@@ -318,7 +415,6 @@ int cs8409_cs42l42_volume_put(struct snd_kcontrol *kctrl, struct snd_ctl_elem_va
switch (ofs) {
case CS42L42_VOL_DAC:
- mutex_lock(&spec->cs8409_i2c_mux);
if (chs & BIT(0)) {
spec->vol[ofs] = *valp;
cs8409_i2c_write(codec, CS42L42_I2C_ADDR, CS8409_CS42L42_REG_HS_VOL_CHA,
@@ -331,16 +427,13 @@ int cs8409_cs42l42_volume_put(struct snd_kcontrol *kctrl, struct snd_ctl_elem_va
cs8409_i2c_write(codec, CS42L42_I2C_ADDR, CS8409_CS42L42_REG_HS_VOL_CHB,
-(spec->vol[ofs]) & CS8409_CS42L42_REG_HS_VOL_MASK);
}
- mutex_unlock(&spec->cs8409_i2c_mux);
break;
case CS42L42_VOL_ADC:
- mutex_lock(&spec->cs8409_i2c_mux);
if (chs & BIT(0)) {
spec->vol[ofs] = *valp;
cs8409_i2c_write(codec, CS42L42_I2C_ADDR, CS8409_CS42L42_REG_AMIC_VOL,
spec->vol[ofs] & CS8409_CS42L42_REG_AMIC_VOL_MASK);
}
- mutex_unlock(&spec->cs8409_i2c_mux);
break;
default:
break;
@@ -353,6 +446,12 @@ int cs8409_cs42l42_volume_put(struct snd_kcontrol *kctrl, struct snd_ctl_elem_va
static void cs8409_cs42l42_reset(struct hda_codec *codec)
{
struct cs8409_spec *spec = codec->spec;
+ struct cs8409_i2c_param irq_regs[] = {
+ { 0x1308, 0x00 },
+ { 0x1309, 0x00 },
+ { 0x130A, 0x00 },
+ { 0x130F, 0x00 },
+ };
/* Assert RTS# line */
snd_hda_codec_write(codec, CS8409_PIN_AFG, 0, AC_VERB_SET_GPIO_DATA, 0);
@@ -366,25 +465,13 @@ static void cs8409_cs42l42_reset(struct hda_codec *codec)
spec->cs42l42_suspended = 0;
spec->last_page = 0;
- mutex_lock(&spec->cs8409_i2c_mux);
-
/* Clear interrupts, by reading interrupt status registers */
- cs8409_i2c_read(codec, CS42L42_I2C_ADDR, 0x1308);
- cs8409_i2c_read(codec, CS42L42_I2C_ADDR, 0x1309);
- cs8409_i2c_read(codec, CS42L42_I2C_ADDR, 0x130A);
- cs8409_i2c_read(codec, CS42L42_I2C_ADDR, 0x130F);
-
- mutex_unlock(&spec->cs8409_i2c_mux);
-
+ cs8409_i2c_bulk_read(codec, CS42L42_I2C_ADDR, irq_regs, ARRAY_SIZE(irq_regs));
}
/* Configure CS42L42 slave codec for jack autodetect */
static void cs8409_cs42l42_enable_jack_detect(struct hda_codec *codec)
{
- struct cs8409_spec *spec = codec->spec;
-
- mutex_lock(&spec->cs8409_i2c_mux);
-
/* Set TIP_SENSE_EN for analog front-end of tip sense.
* Additionally set HSBIAS_SENSE_EN for some variants.
*/
@@ -403,17 +490,11 @@ static void cs8409_cs42l42_enable_jack_detect(struct hda_codec *codec)
cs8409_i2c_read(codec, CS42L42_I2C_ADDR, 0x130f);
/* Enable interrupt */
cs8409_i2c_write(codec, CS42L42_I2C_ADDR, 0x1320, 0xF3);
-
- mutex_unlock(&spec->cs8409_i2c_mux);
}
/* Enable and run CS42L42 slave codec jack auto detect */
static void cs8409_cs42l42_run_jack_detect(struct hda_codec *codec)
{
- struct cs8409_spec *spec = codec->spec;
-
- mutex_lock(&spec->cs8409_i2c_mux);
-
/* Clear interrupts */
cs8409_i2c_read(codec, CS42L42_I2C_ADDR, 0x1308);
cs8409_i2c_read(codec, CS42L42_I2C_ADDR, 0x1b77);
@@ -432,22 +513,6 @@ static void cs8409_cs42l42_run_jack_detect(struct hda_codec *codec)
/* Wait ~10ms */
usleep_range(10000, 25000);
- mutex_unlock(&spec->cs8409_i2c_mux);
-
-}
-
-static void cs8409_cs42l42_reg_setup(struct hda_codec *codec)
-{
- const struct cs8409_i2c_param *seq = cs42l42_init_reg_seq;
- struct cs8409_spec *spec = codec->spec;
-
- mutex_lock(&spec->cs8409_i2c_mux);
-
- for (; seq->addr; seq++)
- cs8409_i2c_write(codec, CS42L42_I2C_ADDR, seq->addr, seq->reg);
-
- mutex_unlock(&spec->cs8409_i2c_mux);
-
}
/*
@@ -475,15 +540,11 @@ static void cs8409_jack_unsol_event(struct hda_codec *codec, unsigned int res)
if (res & CS8409_CS42L42_INT)
return;
- mutex_lock(&spec->cs8409_i2c_mux);
-
/* Read jack detect status registers */
reg_cdc_status = cs8409_i2c_read(codec, CS42L42_I2C_ADDR, 0x1308);
reg_hs_status = cs8409_i2c_read(codec, CS42L42_I2C_ADDR, 0x1124);
reg_ts_status = cs8409_i2c_read(codec, CS42L42_I2C_ADDR, 0x130f);
- mutex_unlock(&spec->cs8409_i2c_mux);
-
/* If status values are < 0, read error has occurred. */
if (reg_cdc_status < 0 || reg_hs_status < 0 || reg_ts_status < 0)
return;
@@ -491,10 +552,8 @@ static void cs8409_jack_unsol_event(struct hda_codec *codec, unsigned int res)
/* HSDET_AUTO_DONE */
if (reg_cdc_status & CS42L42_HSDET_AUTO_DONE) {
- mutex_lock(&spec->cs8409_i2c_mux);
/* Disable HSDET_AUTO_DONE */
cs8409_i2c_write(codec, CS42L42_I2C_ADDR, 0x131b, 0xFF);
- mutex_unlock(&spec->cs8409_i2c_mux);
type = ((reg_hs_status & CS42L42_HSTYPE_MASK) + 1);
/* CS42L42 reports optical jack as type 4
@@ -518,10 +577,8 @@ static void cs8409_jack_unsol_event(struct hda_codec *codec, unsigned int res)
}
}
- mutex_lock(&spec->cs8409_i2c_mux);
/* Re-Enable Tip Sense Interrupt */
cs8409_i2c_write(codec, CS42L42_I2C_ADDR, 0x1320, 0xF3);
- mutex_unlock(&spec->cs8409_i2c_mux);
} else {
/* TIP_SENSE INSERT/REMOVE */
@@ -585,10 +642,8 @@ static int cs8409_suspend(struct hda_codec *codec)
cs8409_enable_ur(codec, 0);
- mutex_lock(&spec->cs8409_i2c_mux);
/* Power down CS42L42 ASP/EQ/MIX/HP */
cs8409_i2c_write(codec, CS42L42_I2C_ADDR, 0x1101, 0xfe);
- mutex_unlock(&spec->cs8409_i2c_mux);
spec->cs42l42_suspended = 1;
@@ -638,26 +693,23 @@ static void cs8409_cs42l42_hw_init(struct hda_codec *codec)
cs8409_cs42l42_reset(codec);
/* Initialise CS42L42 companion codec */
- cs8409_cs42l42_reg_setup(codec);
+ cs8409_i2c_bulk_write(codec, CS42L42_I2C_ADDR, cs42l42_init_reg_seq,
+ CS42L42_INIT_REG_SEQ_SIZE);
if (codec->fixup_id == CS8409_WARLOCK || codec->fixup_id == CS8409_CYBORG) {
/* FULL_SCALE_VOL = 0 for Warlock / Cyborg */
- mutex_lock(&spec->cs8409_i2c_mux);
cs8409_i2c_write(codec, CS42L42_I2C_ADDR, 0x2001, 0x01);
- mutex_unlock(&spec->cs8409_i2c_mux);
/* DMIC1_MO=00b, DMIC1/2_SR=1 */
cs8409_vendor_coef_set(codec, 0x09, 0x0003);
}
/* Restore Volumes after Resume */
- mutex_lock(&spec->cs8409_i2c_mux);
cs8409_i2c_write(codec, CS42L42_I2C_ADDR, CS8409_CS42L42_REG_HS_VOL_CHA,
-(spec->vol[1]) & CS8409_CS42L42_REG_HS_VOL_MASK);
cs8409_i2c_write(codec, CS42L42_I2C_ADDR, CS8409_CS42L42_REG_HS_VOL_CHB,
-(spec->vol[2]) & CS8409_CS42L42_REG_HS_VOL_MASK);
cs8409_i2c_write(codec, CS42L42_I2C_ADDR, CS8409_CS42L42_REG_AMIC_VOL,
spec->vol[0] & CS8409_CS42L42_REG_AMIC_VOL_MASK);
- mutex_unlock(&spec->cs8409_i2c_mux);
cs8409_cs42l42_enable_jack_detect(codec);
@@ -746,7 +798,7 @@ void cs8409_cs42l42_fixups(struct hda_codec *codec, const struct hda_fixup *fix,
spec->exec_verb = codec->core.exec_verb;
codec->core.exec_verb = cs8409_cs42l42_exec_verb;
- mutex_init(&spec->cs8409_i2c_mux);
+ mutex_init(&spec->i2c_mux);
codec->patch_ops = cs8409_cs42l42_patch_ops;
diff --git a/sound/pci/hda/patch_cs8409.h b/sound/pci/hda/patch_cs8409.h
index ee66fd0c01dc..d84cda94dfb9 100644
--- a/sound/pci/hda/patch_cs8409.h
+++ b/sound/pci/hda/patch_cs8409.h
@@ -243,6 +243,8 @@ enum cs8409_coefficient_index_registers {
#define CS8409_CS42L42_DMIC_PIN_NID CS8409_PIN_DMIC1_IN
#define CS8409_CS42L42_DMIC_ADC_PIN_NID CS8409_PIN_DMIC1
+#define CS42L42_INIT_REG_SEQ_SIZE 59
+
enum {
CS8409_BULLSEYE,
CS8409_WARLOCK,
@@ -257,7 +259,7 @@ enum {
struct cs8409_i2c_param {
unsigned int addr;
- unsigned int reg;
+ unsigned int value;
};
struct cs8409_cir_param {
@@ -279,7 +281,7 @@ struct cs8409_spec {
unsigned int cs42l42_suspended:1;
s8 vol[CS42L42_VOLUMES];
- struct mutex cs8409_i2c_mux;
+ struct mutex i2c_mux;
unsigned int i2c_clck_enabled;
unsigned int dev_addr;
struct delayed_work i2c_clk_work;
@@ -303,7 +305,7 @@ extern const struct hda_model_fixup cs8409_models[];
extern const struct hda_fixup cs8409_fixups[];
extern const struct hda_verb cs8409_cs42l42_init_verbs[];
extern const struct hda_pintbl cs8409_cs42l42_pincfgs[];
-extern const struct cs8409_i2c_param cs42l42_init_reg_seq[];
+extern const struct cs8409_i2c_param cs42l42_init_reg_seq[CS42L42_INIT_REG_SEQ_SIZE];
extern const struct cs8409_cir_param cs8409_cs42l42_hw_cfg[];
extern const struct cs8409_cir_param cs8409_cs42l42_bullseye_atn[];
--
2.25.1
Powered by blists - more mailing lists