ALSA: emu10k1: fix access to Audigy GPIO port

As the register definition clearly states, this is a 16-bit register,
yet we did all accesses as 32-bit. The writes in particular would have
the potential to clear the TIMER register (depending on how the bus/card
actually handles the too long writes).

This commit also introduces a separate define A_GPIO which aliases
A_IOCFG, which better reflects the distinct usage on E-MU cards.
This is done in the same commit to keep the churn down, as we're
touching all involved lines anyway.

Signed-off-by: Oswald Buddenhagen <oswald.buddenhagen@gmx.de>
Link: https://lore.kernel.org/r/20230421141006.1005539-2-oswald.buddenhagen@gmx.de
Signed-off-by: Takashi Iwai <tiwai@suse.de>

diff --git a/include/sound/emu10k1.h b/include/sound/emu10k1.h
index 00c2d8c..89dbd2e 100644 (file)
--- a/include/sound/emu10k1.h
+++ b/include/sound/emu10k1.h
@@ -251,11 +251,16 @@
 #define MUSTAT_IRDYN           0x80            /* 0 = MIDI data or command ACK                 */
 #define MUSTAT_ORDYN           0x40            /* 0 = MUDATA can accept a command or data      */
 
-#define A_IOCFG                        0x18            /* GPIO on Audigy card (16bits)                 */
+#define A_GPIO                 0x18            /* GPIO on Audigy card (16bits)                 */
 #define A_GPINPUT_MASK         0xff00
 #define A_GPOUTPUT_MASK                0x00ff
 
+// The GPIO port is used for I/O config on Sound Blasters;
+// card-specific info can be found in the emu_chip_details table.
+// On E-MU cards the port is used as the interface to the FPGA.
+
 // Audigy output/GPIO stuff taken from the kX drivers
+#define A_IOCFG                        A_GPIO
 #define A_IOCFG_GPOUT0         0x0044          /* analog/digital                               */
 #define A_IOCFG_DISABLE_ANALOG 0x0040          /* = 'enable' for Audigy2 (chiprev=4)           */
 #define A_IOCFG_ENABLE_DIGITAL 0x0004

diff --git a/sound/pci/emu10k1/emu10k1_main.c b/sound/pci/emu10k1/emu10k1_main.c
index 4af7c95..29b6da6 100644 (file)
--- a/sound/pci/emu10k1/emu10k1_main.c
+++ b/sound/pci/emu10k1/emu10k1_main.c
@@ -223,8 +223,8 @@ static int snd_emu10k1_init(struct snd_emu10k1 *emu, int enable_ir, int resume)
                 */
                outl(0x7a0000, emu->port + 0x20);
                outl(0xFF000000, emu->port + 0x24);
-               tmp = inl(emu->port + A_IOCFG) & ~0x8; /* Clear bit 3 */
-               outl(tmp, emu->port + A_IOCFG);
+               tmp = inw(emu->port + A_IOCFG) & ~0x8; /* Clear bit 3 */
+               outw(tmp, emu->port + A_IOCFG);
        }
        if (emu->card_capabilities->spi_dac) { /* Audigy 2 ZS Notebook with DAC Wolfson WM8768/WM8568 */
                int size, n;
@@ -244,15 +244,15 @@ static int snd_emu10k1_init(struct snd_emu10k1 *emu, int enable_ir, int resume)
                 * GPIO6: Unknown
                 * GPIO7: Unknown
                 */
-               outl(0x76, emu->port + A_IOCFG); /* Windows uses 0x3f76 */
+               outw(0x76, emu->port + A_IOCFG); /* Windows uses 0x3f76 */
        }
        if (emu->card_capabilities->i2c_adc) { /* Audigy 2 ZS Notebook with ADC Wolfson WM8775 */
                int size, n;
 
                snd_emu10k1_ptr20_write(emu, P17V_I2S_SRC_SEL, 0, 0x2020205f);
-               tmp = inl(emu->port + A_IOCFG);
-               outl(tmp | 0x4, emu->port + A_IOCFG);  /* Set bit 2 for mic input */
-               tmp = inl(emu->port + A_IOCFG);
+               tmp = inw(emu->port + A_IOCFG);
+               outw(tmp | 0x4, emu->port + A_IOCFG);  /* Set bit 2 for mic input */
+               tmp = inw(emu->port + A_IOCFG);
                size = ARRAY_SIZE(i2c_adc_init);
                for (n = 0; n < size; n++)
                        snd_emu10k1_i2c_write(emu, i2c_adc_init[n][0], i2c_adc_init[n][1]);
@@ -308,12 +308,12 @@ static int snd_emu10k1_init(struct snd_emu10k1 *emu, int enable_ir, int resume)
                } else if (emu->card_capabilities->i2c_adc) {
                        ;  /* Disable A_IOCFG for Audigy 2 ZS Notebook */
                } else if (emu->audigy) {
-                       unsigned int reg = inl(emu->port + A_IOCFG);
-                       outl(reg | A_IOCFG_GPOUT2, emu->port + A_IOCFG);
+                       u16 reg = inw(emu->port + A_IOCFG);
+                       outw(reg | A_IOCFG_GPOUT2, emu->port + A_IOCFG);
                        udelay(500);
-                       outl(reg | A_IOCFG_GPOUT1 | A_IOCFG_GPOUT2, emu->port + A_IOCFG);
+                       outw(reg | A_IOCFG_GPOUT1 | A_IOCFG_GPOUT2, emu->port + A_IOCFG);
                        udelay(100);
-                       outl(reg, emu->port + A_IOCFG);
+                       outw(reg, emu->port + A_IOCFG);
                } else {
                        unsigned int reg = inl(emu->port + HCFG);
                        outl(reg | HCFG_GPOUT2, emu->port + HCFG);
@@ -329,8 +329,8 @@ static int snd_emu10k1_init(struct snd_emu10k1 *emu, int enable_ir, int resume)
        } else if (emu->card_capabilities->i2c_adc) {
                ;  /* Disable A_IOCFG for Audigy 2 ZS Notebook */
        } else if (emu->audigy) {       /* enable analog output */
-               unsigned int reg = inl(emu->port + A_IOCFG);
-               outl(reg | A_IOCFG_GPOUT0, emu->port + A_IOCFG);
+               u16 reg = inw(emu->port + A_IOCFG);
+               outw(reg | A_IOCFG_GPOUT0, emu->port + A_IOCFG);
        }
 
        if (emu->address_mode == 0) {
@@ -354,19 +354,19 @@ static void snd_emu10k1_audio_enable(struct snd_emu10k1 *emu)
        } else if (emu->card_capabilities->i2c_adc) {
                ;  /* Disable A_IOCFG for Audigy 2 ZS Notebook */
        } else if (emu->audigy) {
-               outl(inl(emu->port + A_IOCFG) & ~0x44, emu->port + A_IOCFG);
+               outw(inw(emu->port + A_IOCFG) & ~0x44, emu->port + A_IOCFG);
 
                if (emu->card_capabilities->ca0151_chip) { /* audigy2 */
                        /* Unmute Analog now.  Set GPO6 to 1 for Apollo.
                         * This has to be done after init ALice3 I2SOut beyond 48KHz.
                         * So, sequence is important. */
-                       outl(inl(emu->port + A_IOCFG) | 0x0040, emu->port + A_IOCFG);
+                       outw(inw(emu->port + A_IOCFG) | 0x0040, emu->port + A_IOCFG);
                } else if (emu->card_capabilities->ca0108_chip) { /* audigy2 value */
                        /* Unmute Analog now. */
-                       outl(inl(emu->port + A_IOCFG) | 0x0060, emu->port + A_IOCFG);
+                       outw(inw(emu->port + A_IOCFG) | 0x0060, emu->port + A_IOCFG);
                } else {
                        /* Disable routing from AC97 line out to Front speakers */
-                       outl(inl(emu->port + A_IOCFG) | 0x0080, emu->port + A_IOCFG);
+                       outw(inw(emu->port + A_IOCFG) | 0x0080, emu->port + A_IOCFG);
                }
        }
 
@@ -651,9 +651,9 @@ static int snd_emu1010_load_firmware_entry(struct snd_emu10k1 *emu,
                                     const struct firmware *fw_entry)
 {
        int n, i;
-       int reg;
-       int value;
-       __always_unused unsigned int write_post;
+       u16 reg;
+       u8 value;
+       __always_unused u16 write_post;
        unsigned long flags;
 
        if (!fw_entry)
@@ -666,11 +666,11 @@ static int snd_emu1010_load_firmware_entry(struct snd_emu10k1 *emu,
         * FPGA CONFIG OFF -> FPGA PGMN
         */
        spin_lock_irqsave(&emu->emu_lock, flags);
-       outl(0x00, emu->port + A_IOCFG); /* Set PGMN low for 1uS. */
-       write_post = inl(emu->port + A_IOCFG);
+       outw(0x00, emu->port + A_GPIO); /* Set PGMN low for 1uS. */
+       write_post = inw(emu->port + A_GPIO);
        udelay(100);
-       outl(0x80, emu->port + A_IOCFG); /* Leave bit 7 set during netlist setup. */
-       write_post = inl(emu->port + A_IOCFG);
+       outw(0x80, emu->port + A_GPIO); /* Leave bit 7 set during netlist setup. */
+       write_post = inw(emu->port + A_GPIO);
        udelay(100); /* Allow FPGA memory to clean */
        for (n = 0; n < fw_entry->size; n++) {
                value = fw_entry->data[n];
@@ -679,15 +679,15 @@ static int snd_emu1010_load_firmware_entry(struct snd_emu10k1 *emu,
                        if (value & 0x1)
                                reg = reg | 0x20;
                        value = value >> 1;
-                       outl(reg, emu->port + A_IOCFG);
-                       write_post = inl(emu->port + A_IOCFG);
-                       outl(reg | 0x40, emu->port + A_IOCFG);
-                       write_post = inl(emu->port + A_IOCFG);
+                       outw(reg, emu->port + A_GPIO);
+                       write_post = inw(emu->port + A_GPIO);
+                       outw(reg | 0x40, emu->port + A_GPIO);
+                       write_post = inw(emu->port + A_GPIO);
                }
        }
        /* After programming, set GPIO bit 4 high again. */
-       outl(0x10, emu->port + A_IOCFG);
-       write_post = inl(emu->port + A_IOCFG);
+       outw(0x10, emu->port + A_GPIO);
+       write_post = inw(emu->port + A_GPIO);
        spin_unlock_irqrestore(&emu->emu_lock, flags);
 
        return 0;
@@ -2053,7 +2053,7 @@ void snd_emu10k1_suspend_regs(struct snd_emu10k1 *emu)
                                *val = snd_emu10k1_ptr_read(emu, *reg, i);
        }
        if (emu->audigy)
-               emu->saved_a_iocfg = inl(emu->port + A_IOCFG);
+               emu->saved_a_iocfg = inw(emu->port + A_IOCFG);
        emu->saved_hcfg = inl(emu->port + HCFG);
 }
 
@@ -2080,7 +2080,7 @@ void snd_emu10k1_resume_regs(struct snd_emu10k1 *emu)
 
        /* resore for spdif */
        if (emu->audigy)
-               outl(emu->saved_a_iocfg, emu->port + A_IOCFG);
+               outw(emu->saved_a_iocfg, emu->port + A_IOCFG);
        outl(emu->saved_hcfg, emu->port + HCFG);
 
        val = emu->saved_ptr;

diff --git a/sound/pci/emu10k1/emumixer.c b/sound/pci/emu10k1/emumixer.c
index 3c115f8..754d910 100644 (file)
--- a/sound/pci/emu10k1/emumixer.c
+++ b/sound/pci/emu10k1/emumixer.c
@@ -924,7 +924,7 @@ static int snd_audigy_i2c_capture_source_put(struct snd_kcontrol *kcontrol,
        struct snd_emu10k1 *emu = snd_kcontrol_chip(kcontrol);
        unsigned int source_id;
        unsigned int ngain, ogain;
-       u32 gpio;
+       u16 gpio;
        int change = 0;
        unsigned long flags;
        u32 source;
@@ -941,11 +941,11 @@ static int snd_audigy_i2c_capture_source_put(struct snd_kcontrol *kcontrol,
        if (change) {
                snd_emu10k1_i2c_write(emu, ADC_MUX, 0); /* Mute input */
                spin_lock_irqsave(&emu->emu_lock, flags);
-               gpio = inl(emu->port + A_IOCFG);
+               gpio = inw(emu->port + A_IOCFG);
                if (source_id==0)
-                       outl(gpio | 0x4, emu->port + A_IOCFG);
+                       outw(gpio | 0x4, emu->port + A_IOCFG);
                else
-                       outl(gpio & ~0x4, emu->port + A_IOCFG);
+                       outw(gpio & ~0x4, emu->port + A_IOCFG);
                spin_unlock_irqrestore(&emu->emu_lock, flags);
 
                ngain = emu->i2c_capture_volume[source_id][0]; /* Left */
@@ -1632,7 +1632,7 @@ static int snd_emu10k1_shared_spdif_get(struct snd_kcontrol *kcontrol,
        struct snd_emu10k1 *emu = snd_kcontrol_chip(kcontrol);
 
        if (emu->audigy)
-               ucontrol->value.integer.value[0] = inl(emu->port + A_IOCFG) & A_IOCFG_GPOUT0 ? 1 : 0;
+               ucontrol->value.integer.value[0] = inw(emu->port + A_IOCFG) & A_IOCFG_GPOUT0 ? 1 : 0;
        else
                ucontrol->value.integer.value[0] = inl(emu->port + HCFG) & HCFG_GPOUT0 ? 1 : 0;
        if (emu->card_capabilities->invert_shared_spdif)
@@ -1657,13 +1657,13 @@ static int snd_emu10k1_shared_spdif_put(struct snd_kcontrol *kcontrol,
        if ( emu->card_capabilities->i2c_adc) {
                /* Do nothing for Audigy 2 ZS Notebook */
        } else if (emu->audigy) {
-               reg = inl(emu->port + A_IOCFG);
+               reg = inw(emu->port + A_IOCFG);
                val = sw ? A_IOCFG_GPOUT0 : 0;
                change = (reg & A_IOCFG_GPOUT0) != val;
                if (change) {
                        reg &= ~A_IOCFG_GPOUT0;
                        reg |= val;
-                       outl(reg | val, emu->port + A_IOCFG);
+                       outw(reg | val, emu->port + A_IOCFG);
                }
        }
        reg = inl(emu->port + HCFG);

diff --git a/sound/pci/emu10k1/io.c b/sound/pci/emu10k1/io.c
index 35bc73d..f013468 100644 (file)
--- a/sound/pci/emu10k1/io.c
+++ b/sound/pci/emu10k1/io.c
@@ -243,13 +243,13 @@ void snd_emu1010_fpga_write(struct snd_emu10k1 *emu, u32 reg, u32 value)
        if (snd_BUG_ON(value > 0x3f)) /* 0 to 0x3f are values */
                return;
        spin_lock_irqsave(&emu->emu_lock, flags);
-       outl(reg, emu->port + A_IOCFG);
+       outw(reg, emu->port + A_GPIO);
        udelay(10);
-       outl(reg | 0x80, emu->port + A_IOCFG);  /* High bit clocks the value into the fpga. */
+       outw(reg | 0x80, emu->port + A_GPIO);  /* High bit clocks the value into the fpga. */
        udelay(10);
-       outl(value, emu->port + A_IOCFG);
+       outw(value, emu->port + A_GPIO);
        udelay(10);
-       outl(value | 0x80 , emu->port + A_IOCFG);  /* High bit clocks the value into the fpga. */
+       outw(value | 0x80 , emu->port + A_GPIO);  /* High bit clocks the value into the fpga. */
        spin_unlock_irqrestore(&emu->emu_lock, flags);
 }
 
@@ -260,11 +260,11 @@ void snd_emu1010_fpga_read(struct snd_emu10k1 *emu, u32 reg, u32 *value)
                return;
        reg += 0x40; /* 0x40 upwards are registers. */
        spin_lock_irqsave(&emu->emu_lock, flags);
-       outl(reg, emu->port + A_IOCFG);
+       outw(reg, emu->port + A_GPIO);
        udelay(10);
-       outl(reg | 0x80, emu->port + A_IOCFG);  /* High bit clocks the value into the fpga. */
+       outw(reg | 0x80, emu->port + A_GPIO);  /* High bit clocks the value into the fpga. */
        udelay(10);
-       *value = ((inl(emu->port + A_IOCFG) >> 8) & 0x7f);
+       *value = ((inw(emu->port + A_GPIO) >> 8) & 0x7f);
        spin_unlock_irqrestore(&emu->emu_lock, flags);
 }