diff options
Diffstat (limited to 'sound/oss/emu10k1/ecard.c')
| -rw-r--r-- | sound/oss/emu10k1/ecard.c | 157 |
1 files changed, 0 insertions, 157 deletions
diff --git a/sound/oss/emu10k1/ecard.c b/sound/oss/emu10k1/ecard.c deleted file mode 100644 index 4ae635f..0000000 --- a/sound/oss/emu10k1/ecard.c +++ /dev/null @@ -1,157 +0,0 @@ -/* - ********************************************************************** - * ecard.c - E-card initialization code - * Copyright 1999, 2000 Creative Labs, Inc. - * - ********************************************************************** - * - * Date Author Summary of changes - * ---- ------ ------------------ - * October 20, 1999 Bertrand Lee base code release - * - ********************************************************************** - * - * This program is free software; you can redistribute it and/or - * modify it under the terms of the GNU General Public License as - * published by the Free Software Foundation; either version 2 of - * the License, or (at your option) any later version. - * - * This program is distributed in the hope that it will be useful, - * but WITHOUT ANY WARRANTY; without even the implied warranty of - * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the - * GNU General Public License for more details. - * - * You should have received a copy of the GNU General Public - * License along with this program; if not, write to the Free - * Software Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, - * USA. - * - ********************************************************************** - */ - -#include "ecard.h" -#include "hwaccess.h" - -/* Private routines */ -static void ecard_setadcgain(struct emu10k1_card *, struct ecard_state *, u16); -static void ecard_write(struct emu10k1_card *, u32); - -/************************************************************************** - * @func Set the gain of the ECARD's CS3310 Trim/gain controller. The - * trim value consists of a 16bit value which is composed of two - * 8 bit gain/trim values, one for the left channel and one for the - * right channel. The following table maps from the Gain/Attenuation - * value in decibels into the corresponding bit pattern for a single - * channel. - */ - -static void ecard_setadcgain(struct emu10k1_card *card, struct ecard_state *ecard, u16 gain) -{ - u32 currbit; - ecard->adc_gain = gain; - - /* Enable writing to the TRIM registers */ - ecard_write(card, ecard->control_bits & ~EC_TRIM_CSN); - - /* Do it again to insure that we meet hold time requirements */ - ecard_write(card, ecard->control_bits & ~EC_TRIM_CSN); - - for (currbit = (1L << 15); currbit; currbit >>= 1) { - - u32 value = ecard->control_bits & ~(EC_TRIM_CSN|EC_TRIM_SDATA); - - if (gain & currbit) - value |= EC_TRIM_SDATA; - - /* Clock the bit */ - ecard_write(card, value); - ecard_write(card, value | EC_TRIM_SCLK); - ecard_write(card, value); - } - - ecard_write(card, ecard->control_bits); -} - -/************************************************************************** - * @func Clock bits into the Ecard's control latch. The Ecard uses a - * control latch will is loaded bit-serially by toggling the Modem control - * lines from function 2 on the E8010. This function hides these details - * and presents the illusion that we are actually writing to a distinct - * register. - */ -static void ecard_write(struct emu10k1_card *card, u32 value) -{ - u16 count; - u32 data, hcvalue; - unsigned long flags; - - spin_lock_irqsave(&card->lock, flags); - - hcvalue = inl(card->iobase + HCFG) & ~(HOOKN_BIT|HANDN_BIT|PULSEN_BIT); - - outl(card->iobase + HCFG, hcvalue); - - for (count = 0 ; count < EC_NUM_CONTROL_BITS; count++) { - - /* Set up the value */ - data = ((value & 0x1) ? PULSEN_BIT : 0); - value >>= 1; - - outl(card->iobase + HCFG, hcvalue | data); - - /* Clock the shift register */ - outl(card->iobase + HCFG, hcvalue | data | HANDN_BIT); - outl(card->iobase + HCFG, hcvalue | data); - } - - /* Latch the bits */ - outl(card->iobase + HCFG, hcvalue | HOOKN_BIT); - outl(card->iobase + HCFG, hcvalue); - - spin_unlock_irqrestore(&card->lock, flags); -} - -void __devinit emu10k1_ecard_init(struct emu10k1_card *card) -{ - u32 hcvalue; - struct ecard_state ecard; - - /* Set up the initial settings */ - ecard.mux0_setting = EC_DEFAULT_SPDIF0_SEL; - ecard.mux1_setting = EC_DEFAULT_SPDIF1_SEL; - ecard.mux2_setting = 0; - ecard.adc_gain = EC_DEFAULT_ADC_GAIN; - ecard.control_bits = EC_RAW_RUN_MODE | - EC_SPDIF0_SELECT(ecard.mux0_setting) | - EC_SPDIF1_SELECT(ecard.mux1_setting); - - - /* Step 0: Set the codec type in the hardware control register - * and enable audio output */ - hcvalue = emu10k1_readfn0(card, HCFG); - emu10k1_writefn0(card, HCFG, hcvalue | HCFG_AUDIOENABLE | HCFG_CODECFORMAT_I2S); - - /* Step 1: Turn off the led and deassert TRIM_CS */ - ecard_write(card, EC_ADCCAL | EC_LEDN | EC_TRIM_CSN); - - /* Step 2: Calibrate the ADC and DAC */ - ecard_write(card, EC_DACCAL | EC_LEDN | EC_TRIM_CSN); - - /* Step 3: Wait for awhile; FIXME: Is this correct? */ - - current->state = TASK_INTERRUPTIBLE; - schedule_timeout(HZ); - - /* Step 4: Switch off the DAC and ADC calibration. Note - * That ADC_CAL is actually an inverted signal, so we assert - * it here to stop calibration. */ - ecard_write(card, EC_ADCCAL | EC_LEDN | EC_TRIM_CSN); - - /* Step 4: Switch into run mode */ - ecard_write(card, ecard.control_bits); - - /* Step 5: Set the analog input gain */ - ecard_setadcgain(card, &ecard, ecard.adc_gain); -} - - |
