We added hardware volume control to ALi audio driver.
Best regards,
Matt Wu
http://www.ali.com.tw
Information about update:
Updated files: trident.c trident.h
Location: drivers/sound
Driver Version: 0.14.9
Kernel Version: 2.4.X
patch file:
--------------------------------------------------------------------
--- drivers/sound/trident.c.orig Mon Aug 6 10:46:59 2001
+++ drivers/sound/trident.c Mon Aug 6 11:51:34 2001
@@ -31,6 +31,9 @@
* Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
*
* History
+ * v0.14.9
+ * Jul 10 2001 Matt Wu
+ * Add H/W Volume Control
* v0.14.8a
* July 7 2001 Alan Cox
* Moved Matt Wu's ac97 register cache into the card structure
@@ -146,6 +149,7 @@
#include <asm/hardirq.h>
#include <linux/bitops.h>
#include <linux/proc_fs.h>
+#include <linux/interrupt.h>
#if defined CONFIG_ALPHA_NAUTILUS || CONFIG_ALPHA_GENERIC
#include <asm/hwrpb.h>
@@ -155,7 +159,7 @@
#include <linux/pm.h>
-#define DRIVER_VERSION "0.14.8"
+#define DRIVER_VERSION "0.14.9"
/* magic numbers to protect our data structures */
#define TRIDENT_CARD_MAGIC 0x5072696E /* "Prin" */
@@ -348,6 +352,10 @@
int rec_channel_use_count;
u16 mixer_regs[64][NR_AC97]; /* Made card local by Alan */
int mixer_regs_ready;
+
+ /* Added for hardware volume control */
+ int hwvolctl;
+ u32 current_time;
};
/* table to map from CHANNELMASK to channel attribute for SiS 7018 */
@@ -363,6 +371,25 @@
DSP_BIND_I2S, DSP_BIND_CENTER_LFE, DSP_BIND_SURR, DSP_BIND_SPDIF
};
+#define INTERVAL (HZ/10)
+
+typedef struct _task_stru {
+ struct trident_card *card;
+ struct tq_struct task;
+ struct timer_list timer;
+ int data;
+ int delay;
+} task_stru;
+
+#if LINUX_VERSION_CODE < KERNEL_VERSION(2, 4, 3)
+static int pci_set_dma_mask(struct pci_dev *dev, dma_addr_t mask)
+{
+ return (!pci_dma_supported(dev, TRIDENT_DMA_MASK));
+}
+#endif
+
+task_stru *new_task_stru(void);
+
/* Added by Matt Wu 01-05-2001 for spdif in */
static int ali_close_multi_channels(void);
static void ali_delay(struct trident_card *card,int interval);
@@ -1415,10 +1442,123 @@
}
}
+static void ali_hwvol_control(struct trident_card *card, int opt)
+{
+ u16 dwTemp, volume[2], mute, diff, *pVol[2];
+
+ dwTemp = ali_ac97_read(card->ac97_codec[0], 0x02);
+ mute = dwTemp & 0x8000;
+ volume[0] = dwTemp & 0x001f;
+ volume[1] = (dwTemp & 0x1f00) >> 8;
+ if (volume[0] < volume [1]) {
+ pVol[0] = &volume[0];
+ pVol[1] = &volume[1];
+ } else {
+ pVol[1] = &volume[0];
+ pVol[0] = &volume[1];
+ }
+ diff = *(pVol[1]) - *(pVol[0]);
+
+ if (opt == 1) { // MUTE
+ dwTemp ^= 0x8000;
+ ali_ac97_write(card->ac97_codec[0], 0x02, dwTemp);
+ } else if (opt == 2) { // Down
+ if (mute)
+ return;
+ if (*(pVol[1]) < 0x001f) {
+ (*pVol[1])++;
+ *(pVol[0]) = *(pVol[1]) - diff;
+ }
+ dwTemp &= 0xe0e0;
+ dwTemp |= (volume[0]) | (volume[1] << 8);
+ ali_ac97_write(card->ac97_codec[0], 0x02, dwTemp);
+ card->ac97_codec[0]->mixer_state[0] = ((32-volume[0])*25/8) |
(((32-volume[1])*25/8) << 8);
+ } else if (opt == 4) { // Up
+ if (mute)
+ return;
+ if (*(pVol[0]) >0) {{
+ (*pVol[0])--;
+ *(pVol[1]) = *(pVol[0]) + diff;
+ }
+ dwTemp &= 0xe0e0;
+ dwTemp |= (volume[0]) | (volume[1] << 8);
+ ali_ac97_write(card->ac97_codec[0], 0x02, dwTemp);
+ card->ac97_codec[0]->mixer_state[0] = ((32-volume[0])*25/8) |
(((32-volume[1])*25/8) << 8);
+ } else {
+ }
+}
+
+task_stru *new_task_stru()
+{
+ task_stru *ptask = NULL;
+ ptask = (task_stru *)kmalloc(sizeof(task_stru), GFP_KERNEL);
+ if (ptask)
+ memset(ptask, 0, sizeof(task_stru));
+ return ptask;
+}
+
+static void ali_timeout(unsigned long ptr)
+{
+ task_stru *ptask = (task_stru *)ptr;
+ struct trident_card *card = ptask->card;
+ u16 wTemp = 0;
+
+ /* Enable GPIO IRQ (MISCINT bit 18h)*/
+ wTemp = inw(TRID_REG(card, T4D_MISCINT + 2));
+ wTemp |= 0x0004;
+ outw(wTemp, TRID_REG(card, T4D_MISCINT + 2));
+
+ kfree(ptask);
+}
+
+static void ali_set_timer(task_stru *ptask)
+{
+ /* Add Timer Routine to Enable GPIO IRQ */
+ init_timer(&ptask->timer);
+ ptask->timer.function = ali_timeout;
+ ptask->timer.data = (unsigned long) ptask;
+ ptask->timer.expires = jiffies + ptask->delay;
+ add_timer(&ptask->timer);
+}
+
+static void ali_bh_interrupt(void *ptr)
+{
+ task_stru *ptask = (task_stru *)ptr;
+
+ ali_hwvol_control(ptask->card, ptask->data);
+ ali_set_timer(ptask);
+}
+
+static void ali_queue_task(struct trident_card *card, int opt, int delay)
+{
+ u16 wTemp;
+ task_stru *ptask;
+
+ ptask = new_task_stru();
+ if (ptask) {
+ /* Disable GPIO IRQ (MISCINT bit 18h)*/
+ wTemp = inw(TRID_REG(card, T4D_MISCINT + 2));
+ wTemp &= (u16)(~0x0004);
+ outw(wTemp, TRID_REG(card, T4D_MISCINT + 2));
+
+ /* queue task */
+ ptask->task.routine = ali_bh_interrupt;
+ ptask->task.data = ptask;
+ ptask->card = card;
+ ptask->data = opt;
+ ptask->delay = delay;
+ queue_task(&(ptask->task), &tq_immediate);
+ mark_bh(IMMEDIATE_BH);
+ }
+ else
+ ali_hwvol_control(card, opt);
+}
+
static void trident_interrupt(int irq, void *dev_id, struct pt_regs *regs)
{
struct trident_card *card = (struct trident_card *)dev_id;
u32 event;
+ u32 gpio;
spin_lock(&card->lock);
event = inl(TRID_REG(card, T4D_MISCINT));
@@ -1431,9 +1571,21 @@
card->address_interrupt(card);
}
+ /* GPIO IRQ (H/W Volume Control) */
+ event = inl(TRID_REG(card, T4D_MISCINT));
+ if (event & (1<<25)) {
+ gpio = inl(TRID_REG(card, ALI_GPIO));
+ if (jiffies - card->current_time >= INTERVAL) {
+ card->current_time = jiffies;
+ ali_queue_task(card, gpio&0x07, INTERVAL);
+ }
+ }
+
/* manually clear interrupt status, bad hardware design, blame T^2 */
- outl((ST_TARGET_REACHED | MIXER_OVERFLOW | MIXER_UNDERFLOW),
+ event = inl(TRID_REG(card, T4D_MISCINT));
+ outl(event | (ST_TARGET_REACHED | MIXER_OVERFLOW | MIXER_UNDERFLOW),
TRID_REG(card, T4D_MISCINT));
+
spin_unlock(&card->lock);
}
@@ -3637,10 +3789,10 @@
{
unsigned long iobase;
struct trident_card *card;
- dma_addr_t mask;
- int bits;
- u8 revision;
+ struct pci_dev *pci_dev_m1533 = NULL;
+ u8 revision, bChar;
int i = 0;
+ u16 wTemp;
if (pci_enable_device(pci_dev))
return -ENODEV;
@@ -3708,6 +3860,23 @@
}
#endif
}
+
+ /* Add H/W Volume Control By Matt Wu Jul. 06, 2001 */
+ card->hwvolctl = 0;
+ pci_dev_m1533 =
pci_find_device(PCI_VENDOR_ID_AL,PCI_DEVICE_ID_AL_M1533, pci_dev_m1533);
+
+ if (pci_dev_m1533 == NULL)
+ return -ENODEV;
+ pci_read_config_byte(pci_dev_m1533, 0x63, &bChar);
+ if (bChar & (1<<5))
+ card->hwvolctl = 1;
+ if (card->hwvolctl) {
+ /* Clear m1533 pci cfg 78h bit 30 to zero, which makes
+ GPIO11/12/13 work as ACGP_UP/DOWN/MUTE. */
+ pci_read_config_byte(pci_dev_m1533, 0x7b, &bChar);
+ bChar &= 0xbf; /*clear bit 6 */
+ pci_write_config_byte(pci_dev_m1533, 0x7b, bChar);
+ }
}
else {
card->alloc_pcm_channel = trident_alloc_pcm_channel;
@@ -3753,6 +3922,21 @@
outl(0x00, TRID_REG(card, T4D_MUSICVOL_WAVEVOL));
if (card->pci_id == PCI_DEVICE_ID_ALI_5451) {
+
+ /* Add H/W Volume Control By Matt Wu Jul. 06, 2001 */
+ if(card->hwvolctl) {
+ /* Enable GPIO IRQ (MISCINT bit 18h)*/
+ wTemp = inw(TRID_REG(card, T4D_MISCINT + 2));
+ wTemp |= 0x0004;
+ outw(wTemp, TRID_REG(card, T4D_MISCINT + 2));
+
+ /* Enable H/W Volume Control GLOVAL CONTROL bit 0*/
+ wTemp = inw(TRID_REG(card, ALI_GLOBAL_CONTROL));
+ wTemp |= 0x0001;
+ outw(wTemp, TRID_REG(card, ALI_GLOBAL_CONTROL));
+
+ card->current_time = jiffies;
+ }
if(card->revision == ALI_5451_V02)
ali_close_multi_channels();
/* edited by HMSEO for GT sound */
--- drivers/sound/trident.h.orig Mon Aug 6 10:47:09 2001
+++ drivers/sound/trident.h Mon Aug 6 11:37:51 2001
@@ -90,10 +90,10 @@
T4D_STOP_B = 0xb8, T4D_CSPF_B = 0xbc,
T4D_SBBL_SBCL = 0xc0, T4D_SBCTRL_SBE2R_SBDD = 0xc4,
T4D_STIMER = 0xc8, T4D_LFO_B_I2S_DELTA = 0xcc,
- T4D_AINT_B = 0xd8, T4D_AINTEN_B = 0xdc,
- ALI_MPUR2 = 0x22,
- ALI_EBUF1 = 0xf4,
- ALI_EBUF2 = 0xf8
+ T4D_AINT_B = 0xd8, T4D_AINTEN_B = 0xdc,
+ ALI_MPUR2 = 0x22, ALI_GPIO = 0x7c,
+ ALI_EBUF1 = 0xf4,
+ ALI_EBUF2 = 0xf8
};
enum ali_op_registers {
--------------------------------------------------------------------
-
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@vger.kernel.org
More majordomo info at http://vger.kernel.org/majordomo-info.html
Please read the FAQ at http://www.tux.org/lkml/