summaryrefslogtreecommitdiff
path: root/target/linux/pxa/patches-2.6.21/027-ucb1400-ac97-audio.patch
diff options
context:
space:
mode:
Diffstat (limited to 'target/linux/pxa/patches-2.6.21/027-ucb1400-ac97-audio.patch')
-rw-r--r--target/linux/pxa/patches-2.6.21/027-ucb1400-ac97-audio.patch298
1 files changed, 298 insertions, 0 deletions
diff --git a/target/linux/pxa/patches-2.6.21/027-ucb1400-ac97-audio.patch b/target/linux/pxa/patches-2.6.21/027-ucb1400-ac97-audio.patch
new file mode 100644
index 0000000..cb01d2c
--- /dev/null
+++ b/target/linux/pxa/patches-2.6.21/027-ucb1400-ac97-audio.patch
@@ -0,0 +1,298 @@
+Index: linux-2.6.21gum/sound/pci/ac97/ac97_codec.c
+===================================================================
+--- linux-2.6.21gum.orig/sound/pci/ac97/ac97_codec.c
++++ linux-2.6.21gum/sound/pci/ac97/ac97_codec.c
+@@ -158,7 +158,7 @@ static const struct ac97_codec_id snd_ac
+ { 0x4e534300, 0xffffffff, "LM4540,43,45,46,48", NULL, NULL }, // only guess --jk
+ { 0x4e534331, 0xffffffff, "LM4549", NULL, NULL },
+ { 0x4e534350, 0xffffffff, "LM4550", patch_lm4550, NULL }, // volume wrap fix
+-{ 0x50534304, 0xffffffff, "UCB1400", patch_ucb1400, NULL },
++{ 0x50534304, 0xffffffff, "UCB1400", patch_ucb1400, NULL, AC97_HAS_NO_STD_PCM },
+ { 0x53494c20, 0xffffffe0, "Si3036,8", mpatch_si3036, mpatch_si3036, AC97_MODEM_PATCH },
+ { 0x54524102, 0xffffffff, "TR28022", NULL, NULL },
+ { 0x54524106, 0xffffffff, "TR28026", NULL, NULL },
+Index: linux-2.6.21gum/sound/pci/ac97/ac97_patch.c
+===================================================================
+--- linux-2.6.21gum.orig/sound/pci/ac97/ac97_patch.c
++++ linux-2.6.21gum/sound/pci/ac97/ac97_patch.c
+@@ -29,6 +29,10 @@
+ #include <linux/slab.h>
+ #include <linux/mutex.h>
+
++#include <linux/proc_fs.h>
++#include <linux/string.h>
++#include <linux/ctype.h>
++
+ #include <sound/core.h>
+ #include <sound/pcm.h>
+ #include <sound/control.h>
+@@ -406,6 +410,227 @@ int patch_yamaha_ymf753(struct snd_ac97
+ }
+
+ /*
++ * UCB1400 codec
++ */
++
++#define AC97_UCB1400_FCSR1 0x6a
++#define AC97_UCB1400_FCSR2 0x6c
++
++static const struct snd_kcontrol_new ucb1400_snd_ac97_controls[] = {
++ AC97_SINGLE("Tone Control - Bass", AC97_UCB1400_FCSR1, 11, 4, 0),
++ AC97_SINGLE("Tone Control - Treble", AC97_UCB1400_FCSR1, 9, 2, 0),
++ AC97_SINGLE("Headphone Playback Switch", AC97_UCB1400_FCSR1, 6, 1, 0),
++ AC97_SINGLE("De-emphasis", AC97_UCB1400_FCSR1, 5, 1, 0),
++ AC97_SINGLE("DC Filter", AC97_UCB1400_FCSR1, 4, 1, 0),
++ AC97_SINGLE("Hi-pass Filter", AC97_UCB1400_FCSR1, 3, 1, 0),
++ AC97_SINGLE("ADC Filter", AC97_UCB1400_FCSR2, 12, 1, 0),
++};
++
++#define NUM_GPIO_LINES 10
++
++static struct proc_dir_entry *proc_gpio_parent;
++static struct proc_dir_entry *proc_gpios[NUM_GPIO_LINES];
++
++typedef struct
++{
++ int gpio;
++ char name[32];
++ struct snd_ac97 *ac97;
++} gpio_summary_type;
++
++static gpio_summary_type gpio_summaries[NUM_GPIO_LINES] =
++{
++ { 0, "UCB1400-0-0" },
++ { 1, "UCB1400-0-1" },
++ { 2, "UCB1400-0-2" },
++ { 3, "UCB1400-0-3" },
++ { 4, "UCB1400-0-4" },
++ { 5, "UCB1400-0-5" },
++ { 6, "UCB1400-0-6" },
++ { 7, "UCB1400-0-7" },
++ { 8, "UCB1400-0-8" },
++ { 9, "UCB1400-0-9" }
++};
++
++
++static int proc_ucb1400_ac97_gpio_write(struct file *file, const char __user *buf,
++ unsigned long count, void *data)
++{
++ char *cur, lbuf[count + 1];
++ gpio_summary_type *summary = data;
++ u32 direction_is_out, operation_is_set;
++ int i = summary->gpio;
++ u16 dir, value;
++
++ if (!capable(CAP_SYS_ADMIN))
++ return -EACCES;
++
++ memset(lbuf, 0, count + 1);
++
++ if (copy_from_user(lbuf, buf, count))
++ return -EFAULT;
++
++ cur = lbuf;
++
++ // Get current values
++ direction_is_out = !!(snd_ac97_read(summary->ac97, 0x5c) & (0x0001 << i));
++ operation_is_set = !!(snd_ac97_read(summary->ac97, 0x5a) & (0x0001 << i));
++ while(1)
++ {
++ // We accept options: {GPIO|AF1|AF2|AF3}, {set|clear}, {in|out}
++ // Anything else is an error
++ while(cur[0] && (isspace(cur[0]) || ispunct(cur[0]))) cur = &(cur[1]);
++
++ if('\0' == cur[0]) break;
++
++ // Ok, so now we're pointing at the start of something
++ switch(cur[0])
++ {
++ case 'G':
++ // Check that next is "PIO" -- '\0' will cause safe short-circuit if end of buf
++ if(!(cur[1] == 'P' && cur[2] == 'I' && cur[3] == 'O')) goto parse_error;
++ cur = &(cur[4]);
++ break;
++ case 's':
++ if(!(cur[1] == 'e' && cur[2] == 't')) goto parse_error;
++ operation_is_set = 1;
++ cur = &(cur[3]);
++ break;
++ case 'c':
++ if(!(cur[1] == 'l' && cur[2] == 'e' && cur[3] == 'a' && cur[4] == 'r')) goto
++parse_error;
++ operation_is_set = 0;
++ cur = &(cur[5]);
++ break;
++ case 'i':
++ if(!(cur[1] == 'n')) goto parse_error;
++ direction_is_out = 0;
++ cur = &(cur[2]);
++ break;
++ case 'o':
++ if(!(cur[1] == 'u' && cur[2] == 't')) goto parse_error;
++ direction_is_out = 1;
++ cur = &(cur[3]);
++ break;
++ default: goto parse_error;
++ }
++ }
++
++ // set/get value
++ dir = snd_ac97_read(summary->ac97, 0x5c);
++ value = snd_ac97_read(summary->ac97, 0x5a);
++ if (direction_is_out)
++ {
++ dir |= 0x0001 << i;
++ if (operation_is_set)
++ {
++ value |= 0x0001 << i;
++ }
++ else
++ {
++ value &= ~(0x0001 << i);
++ }
++
++ snd_ac97_write(summary->ac97, 0x5c, dir);
++ snd_ac97_write(summary->ac97, 0x5a, value);
++ }
++ else // direction in
++ {
++ dir &= ~(0x0001 << i);
++ snd_ac97_write(summary->ac97, 0x5c, dir);
++ operation_is_set = snd_ac97_read(summary->ac97, 0x5a) & ~(0x0001 << i);
++ }
++
++#ifdef CONFIG_PROC_GPIO_DEBUG
++ printk(KERN_INFO "Set (%s,%s,%s) via /proc/gpio/%s\n",
++ "GPIO",
++ direction_is_out ? "out" : "in",
++ operation_is_set ? "set" : "clear",
++ summary->name);
++#endif
++
++ return count;
++
++parse_error:
++ printk(KERN_CRIT "Parse error: Expect \"GPIO|[set|clear]|[in|out] ...\"\n");
++ return -EINVAL;
++}
++
++static int proc_ucb1400_ac97_gpio_read(char *page, char **start, off_t off,
++ int count, int *eof, void *data)
++{
++ char *p = page;
++ gpio_summary_type *summary = data;
++ int len, i; /*, af;*/
++ i = summary->gpio;
++
++ p += sprintf(p, "%d\t%s\t%s\t%s\n", i,
++ "GPIO",
++ (snd_ac97_read(summary->ac97, 0x5c) & (0x0001 << i)) ? "out" : "in",
++ (snd_ac97_read(summary->ac97, 0x5a) & (0x0001 << i)) ? "set" : "clear");
++
++ len = (p - page) - off;
++
++ if(len < 0)
++ {
++ len = 0;
++ }
++
++ *eof = (len <= count) ? 1 : 0;
++ *start = page + off;
++
++ return len;
++}
++
++int patch_ucb1400(struct snd_ac97 * ac97)
++{
++ int err, i;
++
++ proc_gpio_parent = proc_mkdir("gpio", NULL);
++ if(!proc_gpio_parent) return 0;
++
++ for(i=0; i < NUM_GPIO_LINES; i++)
++ {
++ proc_gpios[i] = create_proc_entry(gpio_summaries[i].name, 0644, proc_gpio_parent);
++ if(proc_gpios[i])
++ {
++ gpio_summaries[i].ac97 = ac97;
++ proc_gpios[i]->data = &gpio_summaries[i];
++ proc_gpios[i]->read_proc = proc_ucb1400_ac97_gpio_read;
++ proc_gpios[i]->write_proc = proc_ucb1400_ac97_gpio_write;
++ }
++ }
++
++ for(i = 0; i < ARRAY_SIZE(ucb1400_snd_ac97_controls); i++) {
++ if((err = snd_ctl_add(ac97->bus->card, snd_ac97_cnew(&ucb1400_snd_ac97_controls[i], ac97))) < 0)
++ return err;
++ }
++
++ snd_ac97_write_cache(ac97, AC97_UCB1400_FCSR1,
++ (0 << 11) | // 0 base boost
++ (0 << 9) | // 0 treble boost
++ (0 << 7) | // Mode = flat
++ (1 << 6) | // Headphones enable
++ (0 << 5) | // De-emphasis disabled
++ (1 << 4) | // DC filter enabled
++ (1 << 3) | // Hi-pass filter enabled
++ (0 << 2) | // disable interrupt signalling via GPIO_INT
++ (1 << 0) // clear ADC overflow status if set
++ );
++
++ snd_ac97_write_cache(ac97, AC97_UCB1400_FCSR2,
++ (0 << 15) | // must be 0
++ (0 << 13) | // must be 0
++ (1 << 12) | // ADC filter enabled
++ (0 << 10) | // must be 0
++ (0 << 4) | // Smart low power mode on neither Codec nor PLL
++ (0 << 0) // must be 0
++ );
++
++ return 0;
++}
++
++/*
+ * May 2, 2003 Liam Girdwood <liam.girdwood@wolfsonmicro.com>
+ * removed broken wolfson00 patch.
+ * added support for WM9705,WM9708,WM9709,WM9710,WM9711,WM9712 and WM9717.
+@@ -3408,41 +3633,3 @@ int patch_lm4550(struct snd_ac97 *ac97)
+ ac97->res_table = lm4550_restbl;
+ return 0;
+ }
+-
+-/*
+- * UCB1400 codec (http://www.semiconductors.philips.com/acrobat_download/datasheets/UCB1400-02.pdf)
+- */
+-static const struct snd_kcontrol_new snd_ac97_controls_ucb1400[] = {
+-/* enable/disable headphone driver which allows direct connection to
+- stereo headphone without the use of external DC blocking
+- capacitors */
+-AC97_SINGLE("Headphone Driver", 0x6a, 6, 1, 0),
+-/* Filter used to compensate the DC offset is added in the ADC to remove idle
+- tones from the audio band. */
+-AC97_SINGLE("DC Filter", 0x6a, 4, 1, 0),
+-/* Control smart-low-power mode feature. Allows automatic power down
+- of unused blocks in the ADC analog front end and the PLL. */
+-AC97_SINGLE("Smart Low Power Mode", 0x6c, 4, 3, 0),
+-};
+-
+-static int patch_ucb1400_specific(struct snd_ac97 * ac97)
+-{
+- int idx, err;
+- for (idx = 0; idx < ARRAY_SIZE(snd_ac97_controls_ucb1400); idx++)
+- if ((err = snd_ctl_add(ac97->bus->card, snd_ctl_new1(&snd_ac97_controls_ucb1400[idx], ac97))) < 0)
+- return err;
+- return 0;
+-}
+-
+-static struct snd_ac97_build_ops patch_ucb1400_ops = {
+- .build_specific = patch_ucb1400_specific,
+-};
+-
+-int patch_ucb1400(struct snd_ac97 * ac97)
+-{
+- ac97->build_ops = &patch_ucb1400_ops;
+- /* enable headphone driver and smart low power mode by default */
+- snd_ac97_write(ac97, 0x6a, 0x0050);
+- snd_ac97_write(ac97, 0x6c, 0x0030);
+- return 0;
+-}
generated by cgit v1.1 at 2024-11-14 16:35:22 +0000