diff options
Diffstat (limited to 'sound/soc/codecs/wm2000.c')
-rw-r--r-- | sound/soc/codecs/wm2000.c | 91 |
1 files changed, 52 insertions, 39 deletions
diff --git a/sound/soc/codecs/wm2000.c b/sound/soc/codecs/wm2000.c index a75c376..3fd5b29 100644 --- a/sound/soc/codecs/wm2000.c +++ b/sound/soc/codecs/wm2000.c @@ -1,7 +1,7 @@ /* * wm2000.c -- WM2000 ALSA Soc Audio driver * - * Copyright 2008-2010 Wolfson Microelectronics PLC. + * Copyright 2008-2011 Wolfson Microelectronics PLC. * * Author: Mark Brown <broonie@opensource.wolfsonmicro.com> * @@ -99,8 +99,9 @@ static void wm2000_reset(struct wm2000_priv *wm2000) } static int wm2000_poll_bit(struct i2c_client *i2c, - unsigned int reg, u8 mask, int timeout) + unsigned int reg, u8 mask) { + int timeout = 4000; int val; val = wm2000_read(i2c, reg); @@ -119,7 +120,7 @@ static int wm2000_poll_bit(struct i2c_client *i2c, static int wm2000_power_up(struct i2c_client *i2c, int analogue) { struct wm2000_priv *wm2000 = dev_get_drvdata(&i2c->dev); - int ret, timeout; + int ret; BUG_ON(wm2000->anc_mode != ANC_OFF); @@ -140,13 +141,13 @@ static int wm2000_power_up(struct i2c_client *i2c, int analogue) /* Wait for ANC engine to become ready */ if (!wm2000_poll_bit(i2c, WM2000_REG_ANC_STAT, - WM2000_ANC_ENG_IDLE, 1)) { + WM2000_ANC_ENG_IDLE)) { dev_err(&i2c->dev, "ANC engine failed to reset\n"); return -ETIMEDOUT; } if (!wm2000_poll_bit(i2c, WM2000_REG_SYS_STATUS, - WM2000_STATUS_BOOT_COMPLETE, 1)) { + WM2000_STATUS_BOOT_COMPLETE)) { dev_err(&i2c->dev, "ANC engine failed to initialise\n"); return -ETIMEDOUT; } @@ -173,16 +174,13 @@ static int wm2000_power_up(struct i2c_client *i2c, int analogue) dev_dbg(&i2c->dev, "Download complete\n"); if (analogue) { - timeout = 248; - wm2000_write(i2c, WM2000_REG_ANA_VMID_PU_TIME, timeout / 4); + wm2000_write(i2c, WM2000_REG_ANA_VMID_PU_TIME, 248 / 4); wm2000_write(i2c, WM2000_REG_SYS_MODE_CNTRL, WM2000_MODE_ANA_SEQ_INCLUDE | WM2000_MODE_MOUSE_ENABLE | WM2000_MODE_THERMAL_ENABLE); } else { - timeout = 10; - wm2000_write(i2c, WM2000_REG_SYS_MODE_CNTRL, WM2000_MODE_MOUSE_ENABLE | WM2000_MODE_THERMAL_ENABLE); @@ -201,9 +199,8 @@ static int wm2000_power_up(struct i2c_client *i2c, int analogue) wm2000_write(i2c, WM2000_REG_SYS_CTL2, WM2000_ANC_INT_N_CLR); if (!wm2000_poll_bit(i2c, WM2000_REG_SYS_STATUS, - WM2000_STATUS_MOUSE_ACTIVE, timeout)) { - dev_err(&i2c->dev, "Timed out waiting for device after %dms\n", - timeout * 10); + WM2000_STATUS_MOUSE_ACTIVE)) { + dev_err(&i2c->dev, "Timed out waiting for device\n"); return -ETIMEDOUT; } @@ -218,28 +215,25 @@ static int wm2000_power_up(struct i2c_client *i2c, int analogue) static int wm2000_power_down(struct i2c_client *i2c, int analogue) { struct wm2000_priv *wm2000 = dev_get_drvdata(&i2c->dev); - int timeout; if (analogue) { - timeout = 248; - wm2000_write(i2c, WM2000_REG_ANA_VMID_PD_TIME, timeout / 4); + wm2000_write(i2c, WM2000_REG_ANA_VMID_PD_TIME, 248 / 4); wm2000_write(i2c, WM2000_REG_SYS_MODE_CNTRL, WM2000_MODE_ANA_SEQ_INCLUDE | WM2000_MODE_POWER_DOWN); } else { - timeout = 10; wm2000_write(i2c, WM2000_REG_SYS_MODE_CNTRL, WM2000_MODE_POWER_DOWN); } if (!wm2000_poll_bit(i2c, WM2000_REG_SYS_STATUS, - WM2000_STATUS_POWER_DOWN_COMPLETE, timeout)) { + WM2000_STATUS_POWER_DOWN_COMPLETE)) { dev_err(&i2c->dev, "Timeout waiting for ANC power down\n"); return -ETIMEDOUT; } if (!wm2000_poll_bit(i2c, WM2000_REG_ANC_STAT, - WM2000_ANC_ENG_IDLE, 1)) { + WM2000_ANC_ENG_IDLE)) { dev_err(&i2c->dev, "Timeout waiting for ANC engine idle\n"); return -ETIMEDOUT; } @@ -268,13 +262,13 @@ static int wm2000_enter_bypass(struct i2c_client *i2c, int analogue) } if (!wm2000_poll_bit(i2c, WM2000_REG_SYS_STATUS, - WM2000_STATUS_ANC_DISABLED, 10)) { + WM2000_STATUS_ANC_DISABLED)) { dev_err(&i2c->dev, "Timeout waiting for ANC disable\n"); return -ETIMEDOUT; } if (!wm2000_poll_bit(i2c, WM2000_REG_ANC_STAT, - WM2000_ANC_ENG_IDLE, 1)) { + WM2000_ANC_ENG_IDLE)) { dev_err(&i2c->dev, "Timeout waiting for ANC engine idle\n"); return -ETIMEDOUT; } @@ -311,7 +305,7 @@ static int wm2000_exit_bypass(struct i2c_client *i2c, int analogue) wm2000_write(i2c, WM2000_REG_SYS_CTL2, WM2000_ANC_INT_N_CLR); if (!wm2000_poll_bit(i2c, WM2000_REG_SYS_STATUS, - WM2000_STATUS_MOUSE_ACTIVE, 10)) { + WM2000_STATUS_MOUSE_ACTIVE)) { dev_err(&i2c->dev, "Timed out waiting for MOUSE\n"); return -ETIMEDOUT; } @@ -325,38 +319,32 @@ static int wm2000_exit_bypass(struct i2c_client *i2c, int analogue) static int wm2000_enter_standby(struct i2c_client *i2c, int analogue) { struct wm2000_priv *wm2000 = dev_get_drvdata(&i2c->dev); - int timeout; BUG_ON(wm2000->anc_mode != ANC_ACTIVE); if (analogue) { - timeout = 248; - wm2000_write(i2c, WM2000_REG_ANA_VMID_PD_TIME, timeout / 4); + wm2000_write(i2c, WM2000_REG_ANA_VMID_PD_TIME, 248 / 4); wm2000_write(i2c, WM2000_REG_SYS_MODE_CNTRL, WM2000_MODE_ANA_SEQ_INCLUDE | WM2000_MODE_THERMAL_ENABLE | WM2000_MODE_STANDBY_ENTRY); } else { - timeout = 10; - wm2000_write(i2c, WM2000_REG_SYS_MODE_CNTRL, WM2000_MODE_THERMAL_ENABLE | WM2000_MODE_STANDBY_ENTRY); } if (!wm2000_poll_bit(i2c, WM2000_REG_SYS_STATUS, - WM2000_STATUS_ANC_DISABLED, timeout)) { + WM2000_STATUS_ANC_DISABLED)) { dev_err(&i2c->dev, "Timed out waiting for ANC disable after 1ms\n"); return -ETIMEDOUT; } - if (!wm2000_poll_bit(i2c, WM2000_REG_ANC_STAT, WM2000_ANC_ENG_IDLE, - 1)) { + if (!wm2000_poll_bit(i2c, WM2000_REG_ANC_STAT, WM2000_ANC_ENG_IDLE)) { dev_err(&i2c->dev, - "Timed out waiting for standby after %dms\n", - timeout * 10); + "Timed out waiting for standby\n"); return -ETIMEDOUT; } @@ -374,23 +362,19 @@ static int wm2000_enter_standby(struct i2c_client *i2c, int analogue) static int wm2000_exit_standby(struct i2c_client *i2c, int analogue) { struct wm2000_priv *wm2000 = dev_get_drvdata(&i2c->dev); - int timeout; BUG_ON(wm2000->anc_mode != ANC_STANDBY); wm2000_write(i2c, WM2000_REG_SYS_CTL1, 0); if (analogue) { - timeout = 248; - wm2000_write(i2c, WM2000_REG_ANA_VMID_PU_TIME, timeout / 4); + wm2000_write(i2c, WM2000_REG_ANA_VMID_PU_TIME, 248 / 4); wm2000_write(i2c, WM2000_REG_SYS_MODE_CNTRL, WM2000_MODE_ANA_SEQ_INCLUDE | WM2000_MODE_THERMAL_ENABLE | WM2000_MODE_MOUSE_ENABLE); } else { - timeout = 10; - wm2000_write(i2c, WM2000_REG_SYS_MODE_CNTRL, WM2000_MODE_THERMAL_ENABLE | WM2000_MODE_MOUSE_ENABLE); @@ -400,9 +384,8 @@ static int wm2000_exit_standby(struct i2c_client *i2c, int analogue) wm2000_write(i2c, WM2000_REG_SYS_CTL2, WM2000_ANC_INT_N_CLR); if (!wm2000_poll_bit(i2c, WM2000_REG_SYS_STATUS, - WM2000_STATUS_MOUSE_ACTIVE, timeout)) { - dev_err(&i2c->dev, "Timed out waiting for MOUSE after %dms\n", - timeout * 10); + WM2000_STATUS_MOUSE_ACTIVE)) { + dev_err(&i2c->dev, "Timed out waiting for MOUSE\n"); return -ETIMEDOUT; } @@ -691,9 +674,39 @@ static int wm2000_resume(struct snd_soc_codec *codec) #define wm2000_resume NULL #endif +static bool wm2000_readable_reg(struct device *dev, unsigned int reg) +{ + switch (reg) { + case WM2000_REG_SYS_START: + case WM2000_REG_SPEECH_CLARITY: + case WM2000_REG_SYS_WATCHDOG: + case WM2000_REG_ANA_VMID_PD_TIME: + case WM2000_REG_ANA_VMID_PU_TIME: + case WM2000_REG_CAT_FLTR_INDX: + case WM2000_REG_CAT_GAIN_0: + case WM2000_REG_SYS_STATUS: + case WM2000_REG_SYS_MODE_CNTRL: + case WM2000_REG_SYS_START0: + case WM2000_REG_SYS_START1: + case WM2000_REG_ID1: + case WM2000_REG_ID2: + case WM2000_REG_REVISON: + case WM2000_REG_SYS_CTL1: + case WM2000_REG_SYS_CTL2: + case WM2000_REG_ANC_STAT: + case WM2000_REG_IF_CTL: + return true; + default: + return false; + } +} + static const struct regmap_config wm2000_regmap = { .reg_bits = 8, .val_bits = 8, + + .max_register = WM2000_REG_IF_CTL, + .readable_reg = wm2000_readable_reg, }; static int wm2000_probe(struct snd_soc_codec *codec) |