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-rw-r--r--sound/pci/emu10k1/io.c725
1 files changed, 725 insertions, 0 deletions
diff --git a/sound/pci/emu10k1/io.c b/sound/pci/emu10k1/io.c
new file mode 100644
index 0000000000..74df233001
--- /dev/null
+++ b/sound/pci/emu10k1/io.c
@@ -0,0 +1,725 @@
+// SPDX-License-Identifier: GPL-2.0-or-later
+/*
+ * Copyright (c) by Jaroslav Kysela <perex@perex.cz>
+ * Lee Revell <rlrevell@joe-job.com>
+ * James Courtier-Dutton <James@superbug.co.uk>
+ * Oswald Buddenhagen <oswald.buddenhagen@gmx.de>
+ * Creative Labs, Inc.
+ *
+ * Routines for control of EMU10K1 chips
+ */
+
+#include <linux/time.h>
+#include <sound/core.h>
+#include <sound/emu10k1.h>
+#include <linux/delay.h>
+#include <linux/export.h>
+#include "p17v.h"
+
+static inline bool check_ptr_reg(struct snd_emu10k1 *emu, unsigned int reg)
+{
+ if (snd_BUG_ON(!emu))
+ return false;
+ if (snd_BUG_ON(reg & (emu->audigy ? (0xffff0000 & ~A_PTR_ADDRESS_MASK)
+ : (0xffff0000 & ~PTR_ADDRESS_MASK))))
+ return false;
+ if (snd_BUG_ON(reg & 0x0000ffff & ~PTR_CHANNELNUM_MASK))
+ return false;
+ return true;
+}
+
+unsigned int snd_emu10k1_ptr_read(struct snd_emu10k1 * emu, unsigned int reg, unsigned int chn)
+{
+ unsigned long flags;
+ unsigned int regptr, val;
+ unsigned int mask;
+
+ regptr = (reg << 16) | chn;
+ if (!check_ptr_reg(emu, regptr))
+ return 0;
+
+ spin_lock_irqsave(&emu->emu_lock, flags);
+ outl(regptr, emu->port + PTR);
+ val = inl(emu->port + DATA);
+ spin_unlock_irqrestore(&emu->emu_lock, flags);
+
+ if (reg & 0xff000000) {
+ unsigned char size, offset;
+
+ size = (reg >> 24) & 0x3f;
+ offset = (reg >> 16) & 0x1f;
+ mask = (1 << size) - 1;
+
+ return (val >> offset) & mask;
+ } else {
+ return val;
+ }
+}
+
+EXPORT_SYMBOL(snd_emu10k1_ptr_read);
+
+void snd_emu10k1_ptr_write(struct snd_emu10k1 *emu, unsigned int reg, unsigned int chn, unsigned int data)
+{
+ unsigned int regptr;
+ unsigned long flags;
+ unsigned int mask;
+
+ regptr = (reg << 16) | chn;
+ if (!check_ptr_reg(emu, regptr))
+ return;
+
+ if (reg & 0xff000000) {
+ unsigned char size, offset;
+
+ size = (reg >> 24) & 0x3f;
+ offset = (reg >> 16) & 0x1f;
+ mask = (1 << size) - 1;
+ if (snd_BUG_ON(data & ~mask))
+ return;
+ mask <<= offset;
+ data <<= offset;
+
+ spin_lock_irqsave(&emu->emu_lock, flags);
+ outl(regptr, emu->port + PTR);
+ data |= inl(emu->port + DATA) & ~mask;
+ } else {
+ spin_lock_irqsave(&emu->emu_lock, flags);
+ outl(regptr, emu->port + PTR);
+ }
+ outl(data, emu->port + DATA);
+ spin_unlock_irqrestore(&emu->emu_lock, flags);
+}
+
+EXPORT_SYMBOL(snd_emu10k1_ptr_write);
+
+void snd_emu10k1_ptr_write_multiple(struct snd_emu10k1 *emu, unsigned int chn, ...)
+{
+ va_list va;
+ u32 addr_mask;
+ unsigned long flags;
+
+ if (snd_BUG_ON(!emu))
+ return;
+ if (snd_BUG_ON(chn & ~PTR_CHANNELNUM_MASK))
+ return;
+ addr_mask = ~((emu->audigy ? A_PTR_ADDRESS_MASK : PTR_ADDRESS_MASK) >> 16);
+
+ va_start(va, chn);
+ spin_lock_irqsave(&emu->emu_lock, flags);
+ for (;;) {
+ u32 data;
+ u32 reg = va_arg(va, u32);
+ if (reg == REGLIST_END)
+ break;
+ data = va_arg(va, u32);
+ if (snd_BUG_ON(reg & addr_mask)) // Only raw registers supported here
+ continue;
+ outl((reg << 16) | chn, emu->port + PTR);
+ outl(data, emu->port + DATA);
+ }
+ spin_unlock_irqrestore(&emu->emu_lock, flags);
+ va_end(va);
+}
+
+EXPORT_SYMBOL(snd_emu10k1_ptr_write_multiple);
+
+unsigned int snd_emu10k1_ptr20_read(struct snd_emu10k1 * emu,
+ unsigned int reg,
+ unsigned int chn)
+{
+ unsigned long flags;
+ unsigned int regptr, val;
+
+ regptr = (reg << 16) | chn;
+
+ spin_lock_irqsave(&emu->emu_lock, flags);
+ outl(regptr, emu->port + PTR2);
+ val = inl(emu->port + DATA2);
+ spin_unlock_irqrestore(&emu->emu_lock, flags);
+ return val;
+}
+
+void snd_emu10k1_ptr20_write(struct snd_emu10k1 *emu,
+ unsigned int reg,
+ unsigned int chn,
+ unsigned int data)
+{
+ unsigned int regptr;
+ unsigned long flags;
+
+ regptr = (reg << 16) | chn;
+
+ spin_lock_irqsave(&emu->emu_lock, flags);
+ outl(regptr, emu->port + PTR2);
+ outl(data, emu->port + DATA2);
+ spin_unlock_irqrestore(&emu->emu_lock, flags);
+}
+
+int snd_emu10k1_spi_write(struct snd_emu10k1 * emu,
+ unsigned int data)
+{
+ unsigned int reset, set;
+ unsigned int reg, tmp;
+ int n, result;
+ int err = 0;
+
+ /* This function is not re-entrant, so protect against it. */
+ spin_lock(&emu->spi_lock);
+ if (emu->card_capabilities->ca0108_chip)
+ reg = P17V_SPI;
+ else {
+ /* For other chip types the SPI register
+ * is currently unknown. */
+ err = 1;
+ goto spi_write_exit;
+ }
+ if (data > 0xffff) {
+ /* Only 16bit values allowed */
+ err = 1;
+ goto spi_write_exit;
+ }
+
+ tmp = snd_emu10k1_ptr20_read(emu, reg, 0);
+ reset = (tmp & ~0x3ffff) | 0x20000; /* Set xxx20000 */
+ set = reset | 0x10000; /* Set xxx1xxxx */
+ snd_emu10k1_ptr20_write(emu, reg, 0, reset | data);
+ tmp = snd_emu10k1_ptr20_read(emu, reg, 0); /* write post */
+ snd_emu10k1_ptr20_write(emu, reg, 0, set | data);
+ result = 1;
+ /* Wait for status bit to return to 0 */
+ for (n = 0; n < 100; n++) {
+ udelay(10);
+ tmp = snd_emu10k1_ptr20_read(emu, reg, 0);
+ if (!(tmp & 0x10000)) {
+ result = 0;
+ break;
+ }
+ }
+ if (result) {
+ /* Timed out */
+ err = 1;
+ goto spi_write_exit;
+ }
+ snd_emu10k1_ptr20_write(emu, reg, 0, reset | data);
+ tmp = snd_emu10k1_ptr20_read(emu, reg, 0); /* Write post */
+ err = 0;
+spi_write_exit:
+ spin_unlock(&emu->spi_lock);
+ return err;
+}
+
+/* The ADC does not support i2c read, so only write is implemented */
+int snd_emu10k1_i2c_write(struct snd_emu10k1 *emu,
+ u32 reg,
+ u32 value)
+{
+ u32 tmp;
+ int timeout = 0;
+ int status;
+ int retry;
+ int err = 0;
+
+ if ((reg > 0x7f) || (value > 0x1ff)) {
+ dev_err(emu->card->dev, "i2c_write: invalid values.\n");
+ return -EINVAL;
+ }
+
+ /* This function is not re-entrant, so protect against it. */
+ spin_lock(&emu->i2c_lock);
+
+ tmp = reg << 25 | value << 16;
+
+ /* This controls the I2C connected to the WM8775 ADC Codec */
+ snd_emu10k1_ptr20_write(emu, P17V_I2C_1, 0, tmp);
+ tmp = snd_emu10k1_ptr20_read(emu, P17V_I2C_1, 0); /* write post */
+
+ for (retry = 0; retry < 10; retry++) {
+ /* Send the data to i2c */
+ tmp = 0;
+ tmp = tmp | (I2C_A_ADC_LAST|I2C_A_ADC_START|I2C_A_ADC_ADD);
+ snd_emu10k1_ptr20_write(emu, P17V_I2C_ADDR, 0, tmp);
+
+ /* Wait till the transaction ends */
+ while (1) {
+ mdelay(1);
+ status = snd_emu10k1_ptr20_read(emu, P17V_I2C_ADDR, 0);
+ timeout++;
+ if ((status & I2C_A_ADC_START) == 0)
+ break;
+
+ if (timeout > 1000) {
+ dev_warn(emu->card->dev,
+ "emu10k1:I2C:timeout status=0x%x\n",
+ status);
+ break;
+ }
+ }
+ //Read back and see if the transaction is successful
+ if ((status & I2C_A_ADC_ABORT) == 0)
+ break;
+ }
+
+ if (retry == 10) {
+ dev_err(emu->card->dev, "Writing to ADC failed!\n");
+ dev_err(emu->card->dev, "status=0x%x, reg=%d, value=%d\n",
+ status, reg, value);
+ /* dump_stack(); */
+ err = -EINVAL;
+ }
+
+ spin_unlock(&emu->i2c_lock);
+ return err;
+}
+
+static void snd_emu1010_fpga_write_locked(struct snd_emu10k1 *emu, u32 reg, u32 value)
+{
+ if (snd_BUG_ON(reg > 0x3f))
+ return;
+ reg += 0x40; /* 0x40 upwards are registers. */
+ if (snd_BUG_ON(value > 0x3f)) /* 0 to 0x3f are values */
+ return;
+ outw(reg, emu->port + A_GPIO);
+ udelay(10);
+ outw(reg | 0x80, emu->port + A_GPIO); /* High bit clocks the value into the fpga. */
+ udelay(10);
+ outw(value, emu->port + A_GPIO);
+ udelay(10);
+ outw(value | 0x80 , emu->port + A_GPIO); /* High bit clocks the value into the fpga. */
+}
+
+void snd_emu1010_fpga_write(struct snd_emu10k1 *emu, u32 reg, u32 value)
+{
+ unsigned long flags;
+
+ spin_lock_irqsave(&emu->emu_lock, flags);
+ snd_emu1010_fpga_write_locked(emu, reg, value);
+ spin_unlock_irqrestore(&emu->emu_lock, flags);
+}
+
+static void snd_emu1010_fpga_read_locked(struct snd_emu10k1 *emu, u32 reg, u32 *value)
+{
+ // The higest input pin is used as the designated interrupt trigger,
+ // so it needs to be masked out.
+ // But note that any other input pin change will also cause an IRQ,
+ // so using this function often causes an IRQ as a side effect.
+ u32 mask = emu->card_capabilities->ca0108_chip ? 0x1f : 0x7f;
+ if (snd_BUG_ON(reg > 0x3f))
+ return;
+ reg += 0x40; /* 0x40 upwards are registers. */
+ outw(reg, emu->port + A_GPIO);
+ udelay(10);
+ outw(reg | 0x80, emu->port + A_GPIO); /* High bit clocks the value into the fpga. */
+ udelay(10);
+ *value = ((inw(emu->port + A_GPIO) >> 8) & mask);
+}
+
+void snd_emu1010_fpga_read(struct snd_emu10k1 *emu, u32 reg, u32 *value)
+{
+ unsigned long flags;
+
+ spin_lock_irqsave(&emu->emu_lock, flags);
+ snd_emu1010_fpga_read_locked(emu, reg, value);
+ spin_unlock_irqrestore(&emu->emu_lock, flags);
+}
+
+/* Each Destination has one and only one Source,
+ * but one Source can feed any number of Destinations simultaneously.
+ */
+void snd_emu1010_fpga_link_dst_src_write(struct snd_emu10k1 *emu, u32 dst, u32 src)
+{
+ unsigned long flags;
+
+ if (snd_BUG_ON(dst & ~0x71f))
+ return;
+ if (snd_BUG_ON(src & ~0x71f))
+ return;
+ spin_lock_irqsave(&emu->emu_lock, flags);
+ snd_emu1010_fpga_write_locked(emu, EMU_HANA_DESTHI, dst >> 8);
+ snd_emu1010_fpga_write_locked(emu, EMU_HANA_DESTLO, dst & 0x1f);
+ snd_emu1010_fpga_write_locked(emu, EMU_HANA_SRCHI, src >> 8);
+ snd_emu1010_fpga_write_locked(emu, EMU_HANA_SRCLO, src & 0x1f);
+ spin_unlock_irqrestore(&emu->emu_lock, flags);
+}
+
+u32 snd_emu1010_fpga_link_dst_src_read(struct snd_emu10k1 *emu, u32 dst)
+{
+ unsigned long flags;
+ u32 hi, lo;
+
+ if (snd_BUG_ON(dst & ~0x71f))
+ return 0;
+ spin_lock_irqsave(&emu->emu_lock, flags);
+ snd_emu1010_fpga_write_locked(emu, EMU_HANA_DESTHI, dst >> 8);
+ snd_emu1010_fpga_write_locked(emu, EMU_HANA_DESTLO, dst & 0x1f);
+ snd_emu1010_fpga_read_locked(emu, EMU_HANA_SRCHI, &hi);
+ snd_emu1010_fpga_read_locked(emu, EMU_HANA_SRCLO, &lo);
+ spin_unlock_irqrestore(&emu->emu_lock, flags);
+ return (hi << 8) | lo;
+}
+
+int snd_emu1010_get_raw_rate(struct snd_emu10k1 *emu, u8 src)
+{
+ u32 reg_lo, reg_hi, value, value2;
+
+ switch (src) {
+ case EMU_HANA_WCLOCK_HANA_SPDIF_IN:
+ snd_emu1010_fpga_read(emu, EMU_HANA_SPDIF_MODE, &value);
+ if (value & EMU_HANA_SPDIF_MODE_RX_INVALID)
+ return 0;
+ reg_lo = EMU_HANA_WC_SPDIF_LO;
+ reg_hi = EMU_HANA_WC_SPDIF_HI;
+ break;
+ case EMU_HANA_WCLOCK_HANA_ADAT_IN:
+ reg_lo = EMU_HANA_WC_ADAT_LO;
+ reg_hi = EMU_HANA_WC_ADAT_HI;
+ break;
+ case EMU_HANA_WCLOCK_SYNC_BNC:
+ reg_lo = EMU_HANA_WC_BNC_LO;
+ reg_hi = EMU_HANA_WC_BNC_HI;
+ break;
+ case EMU_HANA_WCLOCK_2ND_HANA:
+ reg_lo = EMU_HANA2_WC_SPDIF_LO;
+ reg_hi = EMU_HANA2_WC_SPDIF_HI;
+ break;
+ default:
+ return 0;
+ }
+ snd_emu1010_fpga_read(emu, reg_hi, &value);
+ snd_emu1010_fpga_read(emu, reg_lo, &value2);
+ // FIXME: The /4 is valid for 0404b, but contradicts all other info.
+ return 0x1770000 / 4 / (((value << 5) | value2) + 1);
+}
+
+void snd_emu1010_update_clock(struct snd_emu10k1 *emu)
+{
+ int clock;
+ u32 leds;
+
+ switch (emu->emu1010.wclock) {
+ case EMU_HANA_WCLOCK_INT_44_1K | EMU_HANA_WCLOCK_1X:
+ clock = 44100;
+ leds = EMU_HANA_DOCK_LEDS_2_44K;
+ break;
+ case EMU_HANA_WCLOCK_INT_48K | EMU_HANA_WCLOCK_1X:
+ clock = 48000;
+ leds = EMU_HANA_DOCK_LEDS_2_48K;
+ break;
+ default:
+ clock = snd_emu1010_get_raw_rate(
+ emu, emu->emu1010.wclock & EMU_HANA_WCLOCK_SRC_MASK);
+ // The raw rate reading is rather coarse (it cannot accurately
+ // represent 44.1 kHz) and fluctuates slightly. Luckily, the
+ // clock comes from digital inputs, which use standardized rates.
+ // So we round to the closest standard rate and ignore discrepancies.
+ if (clock < 46000) {
+ clock = 44100;
+ leds = EMU_HANA_DOCK_LEDS_2_EXT | EMU_HANA_DOCK_LEDS_2_44K;
+ } else {
+ clock = 48000;
+ leds = EMU_HANA_DOCK_LEDS_2_EXT | EMU_HANA_DOCK_LEDS_2_48K;
+ }
+ break;
+ }
+ emu->emu1010.word_clock = clock;
+
+ // FIXME: this should probably represent the AND of all currently
+ // used sources' lock status. But we don't know how to get that ...
+ leds |= EMU_HANA_DOCK_LEDS_2_LOCK;
+
+ snd_emu1010_fpga_write(emu, EMU_HANA_DOCK_LEDS_2, leds);
+}
+
+void snd_emu10k1_intr_enable(struct snd_emu10k1 *emu, unsigned int intrenb)
+{
+ unsigned long flags;
+ unsigned int enable;
+
+ spin_lock_irqsave(&emu->emu_lock, flags);
+ enable = inl(emu->port + INTE) | intrenb;
+ outl(enable, emu->port + INTE);
+ spin_unlock_irqrestore(&emu->emu_lock, flags);
+}
+
+void snd_emu10k1_intr_disable(struct snd_emu10k1 *emu, unsigned int intrenb)
+{
+ unsigned long flags;
+ unsigned int enable;
+
+ spin_lock_irqsave(&emu->emu_lock, flags);
+ enable = inl(emu->port + INTE) & ~intrenb;
+ outl(enable, emu->port + INTE);
+ spin_unlock_irqrestore(&emu->emu_lock, flags);
+}
+
+void snd_emu10k1_voice_intr_enable(struct snd_emu10k1 *emu, unsigned int voicenum)
+{
+ unsigned long flags;
+ unsigned int val;
+
+ spin_lock_irqsave(&emu->emu_lock, flags);
+ if (voicenum >= 32) {
+ outl(CLIEH << 16, emu->port + PTR);
+ val = inl(emu->port + DATA);
+ val |= 1 << (voicenum - 32);
+ } else {
+ outl(CLIEL << 16, emu->port + PTR);
+ val = inl(emu->port + DATA);
+ val |= 1 << voicenum;
+ }
+ outl(val, emu->port + DATA);
+ spin_unlock_irqrestore(&emu->emu_lock, flags);
+}
+
+void snd_emu10k1_voice_intr_disable(struct snd_emu10k1 *emu, unsigned int voicenum)
+{
+ unsigned long flags;
+ unsigned int val;
+
+ spin_lock_irqsave(&emu->emu_lock, flags);
+ if (voicenum >= 32) {
+ outl(CLIEH << 16, emu->port + PTR);
+ val = inl(emu->port + DATA);
+ val &= ~(1 << (voicenum - 32));
+ } else {
+ outl(CLIEL << 16, emu->port + PTR);
+ val = inl(emu->port + DATA);
+ val &= ~(1 << voicenum);
+ }
+ outl(val, emu->port + DATA);
+ spin_unlock_irqrestore(&emu->emu_lock, flags);
+}
+
+void snd_emu10k1_voice_intr_ack(struct snd_emu10k1 *emu, unsigned int voicenum)
+{
+ unsigned long flags;
+
+ spin_lock_irqsave(&emu->emu_lock, flags);
+ if (voicenum >= 32) {
+ outl(CLIPH << 16, emu->port + PTR);
+ voicenum = 1 << (voicenum - 32);
+ } else {
+ outl(CLIPL << 16, emu->port + PTR);
+ voicenum = 1 << voicenum;
+ }
+ outl(voicenum, emu->port + DATA);
+ spin_unlock_irqrestore(&emu->emu_lock, flags);
+}
+
+void snd_emu10k1_voice_half_loop_intr_enable(struct snd_emu10k1 *emu, unsigned int voicenum)
+{
+ unsigned long flags;
+ unsigned int val;
+
+ spin_lock_irqsave(&emu->emu_lock, flags);
+ if (voicenum >= 32) {
+ outl(HLIEH << 16, emu->port + PTR);
+ val = inl(emu->port + DATA);
+ val |= 1 << (voicenum - 32);
+ } else {
+ outl(HLIEL << 16, emu->port + PTR);
+ val = inl(emu->port + DATA);
+ val |= 1 << voicenum;
+ }
+ outl(val, emu->port + DATA);
+ spin_unlock_irqrestore(&emu->emu_lock, flags);
+}
+
+void snd_emu10k1_voice_half_loop_intr_disable(struct snd_emu10k1 *emu, unsigned int voicenum)
+{
+ unsigned long flags;
+ unsigned int val;
+
+ spin_lock_irqsave(&emu->emu_lock, flags);
+ if (voicenum >= 32) {
+ outl(HLIEH << 16, emu->port + PTR);
+ val = inl(emu->port + DATA);
+ val &= ~(1 << (voicenum - 32));
+ } else {
+ outl(HLIEL << 16, emu->port + PTR);
+ val = inl(emu->port + DATA);
+ val &= ~(1 << voicenum);
+ }
+ outl(val, emu->port + DATA);
+ spin_unlock_irqrestore(&emu->emu_lock, flags);
+}
+
+void snd_emu10k1_voice_half_loop_intr_ack(struct snd_emu10k1 *emu, unsigned int voicenum)
+{
+ unsigned long flags;
+
+ spin_lock_irqsave(&emu->emu_lock, flags);
+ if (voicenum >= 32) {
+ outl(HLIPH << 16, emu->port + PTR);
+ voicenum = 1 << (voicenum - 32);
+ } else {
+ outl(HLIPL << 16, emu->port + PTR);
+ voicenum = 1 << voicenum;
+ }
+ outl(voicenum, emu->port + DATA);
+ spin_unlock_irqrestore(&emu->emu_lock, flags);
+}
+
+#if 0
+void snd_emu10k1_voice_set_loop_stop(struct snd_emu10k1 *emu, unsigned int voicenum)
+{
+ unsigned long flags;
+ unsigned int sol;
+
+ spin_lock_irqsave(&emu->emu_lock, flags);
+ if (voicenum >= 32) {
+ outl(SOLEH << 16, emu->port + PTR);
+ sol = inl(emu->port + DATA);
+ sol |= 1 << (voicenum - 32);
+ } else {
+ outl(SOLEL << 16, emu->port + PTR);
+ sol = inl(emu->port + DATA);
+ sol |= 1 << voicenum;
+ }
+ outl(sol, emu->port + DATA);
+ spin_unlock_irqrestore(&emu->emu_lock, flags);
+}
+
+void snd_emu10k1_voice_clear_loop_stop(struct snd_emu10k1 *emu, unsigned int voicenum)
+{
+ unsigned long flags;
+ unsigned int sol;
+
+ spin_lock_irqsave(&emu->emu_lock, flags);
+ if (voicenum >= 32) {
+ outl(SOLEH << 16, emu->port + PTR);
+ sol = inl(emu->port + DATA);
+ sol &= ~(1 << (voicenum - 32));
+ } else {
+ outl(SOLEL << 16, emu->port + PTR);
+ sol = inl(emu->port + DATA);
+ sol &= ~(1 << voicenum);
+ }
+ outl(sol, emu->port + DATA);
+ spin_unlock_irqrestore(&emu->emu_lock, flags);
+}
+#endif
+
+void snd_emu10k1_voice_set_loop_stop_multiple(struct snd_emu10k1 *emu, u64 voices)
+{
+ unsigned long flags;
+
+ spin_lock_irqsave(&emu->emu_lock, flags);
+ outl(SOLEL << 16, emu->port + PTR);
+ outl(inl(emu->port + DATA) | (u32)voices, emu->port + DATA);
+ outl(SOLEH << 16, emu->port + PTR);
+ outl(inl(emu->port + DATA) | (u32)(voices >> 32), emu->port + DATA);
+ spin_unlock_irqrestore(&emu->emu_lock, flags);
+}
+
+void snd_emu10k1_voice_clear_loop_stop_multiple(struct snd_emu10k1 *emu, u64 voices)
+{
+ unsigned long flags;
+
+ spin_lock_irqsave(&emu->emu_lock, flags);
+ outl(SOLEL << 16, emu->port + PTR);
+ outl(inl(emu->port + DATA) & (u32)~voices, emu->port + DATA);
+ outl(SOLEH << 16, emu->port + PTR);
+ outl(inl(emu->port + DATA) & (u32)(~voices >> 32), emu->port + DATA);
+ spin_unlock_irqrestore(&emu->emu_lock, flags);
+}
+
+int snd_emu10k1_voice_clear_loop_stop_multiple_atomic(struct snd_emu10k1 *emu, u64 voices)
+{
+ unsigned long flags;
+ u32 soll, solh;
+ int ret = -EIO;
+
+ spin_lock_irqsave(&emu->emu_lock, flags);
+
+ outl(SOLEL << 16, emu->port + PTR);
+ soll = inl(emu->port + DATA);
+ outl(SOLEH << 16, emu->port + PTR);
+ solh = inl(emu->port + DATA);
+
+ soll &= (u32)~voices;
+ solh &= (u32)(~voices >> 32);
+
+ for (int tries = 0; tries < 1000; tries++) {
+ const u32 quart = 1U << (REG_SIZE(WC_CURRENTCHANNEL) - 2);
+ // First we wait for the third quarter of the sample cycle ...
+ u32 wc = inl(emu->port + WC);
+ u32 cc = REG_VAL_GET(WC_CURRENTCHANNEL, wc);
+ if (cc >= quart * 2 && cc < quart * 3) {
+ // ... and release the low voices, while the high ones are serviced.
+ outl(SOLEL << 16, emu->port + PTR);
+ outl(soll, emu->port + DATA);
+ // Then we wait for the first quarter of the next sample cycle ...
+ for (; tries < 1000; tries++) {
+ cc = REG_VAL_GET(WC_CURRENTCHANNEL, inl(emu->port + WC));
+ if (cc < quart)
+ goto good;
+ // We will block for 10+ us with interrupts disabled. This is
+ // not nice at all, but necessary for reasonable reliability.
+ udelay(1);
+ }
+ break;
+ good:
+ // ... and release the high voices, while the low ones are serviced.
+ outl(SOLEH << 16, emu->port + PTR);
+ outl(solh, emu->port + DATA);
+ // Finally we verify that nothing interfered in fact.
+ if (REG_VAL_GET(WC_SAMPLECOUNTER, inl(emu->port + WC)) ==
+ ((REG_VAL_GET(WC_SAMPLECOUNTER, wc) + 1) & REG_MASK0(WC_SAMPLECOUNTER))) {
+ ret = 0;
+ } else {
+ ret = -EAGAIN;
+ }
+ break;
+ }
+ // Don't block for too long
+ spin_unlock_irqrestore(&emu->emu_lock, flags);
+ udelay(1);
+ spin_lock_irqsave(&emu->emu_lock, flags);
+ }
+
+ spin_unlock_irqrestore(&emu->emu_lock, flags);
+ return ret;
+}
+
+void snd_emu10k1_wait(struct snd_emu10k1 *emu, unsigned int wait)
+{
+ volatile unsigned count;
+ unsigned int newtime = 0, curtime;
+
+ curtime = inl(emu->port + WC) >> 6;
+ while (wait-- > 0) {
+ count = 0;
+ while (count++ < 16384) {
+ newtime = inl(emu->port + WC) >> 6;
+ if (newtime != curtime)
+ break;
+ }
+ if (count > 16384)
+ break;
+ curtime = newtime;
+ }
+}
+
+unsigned short snd_emu10k1_ac97_read(struct snd_ac97 *ac97, unsigned short reg)
+{
+ struct snd_emu10k1 *emu = ac97->private_data;
+ unsigned long flags;
+ unsigned short val;
+
+ spin_lock_irqsave(&emu->emu_lock, flags);
+ outb(reg, emu->port + AC97ADDRESS);
+ val = inw(emu->port + AC97DATA);
+ spin_unlock_irqrestore(&emu->emu_lock, flags);
+ return val;
+}
+
+void snd_emu10k1_ac97_write(struct snd_ac97 *ac97, unsigned short reg, unsigned short data)
+{
+ struct snd_emu10k1 *emu = ac97->private_data;
+ unsigned long flags;
+
+ spin_lock_irqsave(&emu->emu_lock, flags);
+ outb(reg, emu->port + AC97ADDRESS);
+ outw(data, emu->port + AC97DATA);
+ spin_unlock_irqrestore(&emu->emu_lock, flags);
+}
generated by cgit v1.2.3 (git 2.39.1) at 2024-08-08 21:28:54 +0000