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openwrt-xburst/target/linux/pxa/patches-2.6.21/027-ucb1400-ac97-audio.patch
kaloz c886d2690d incomplete Gumstix support 
git-svn-id: svn://svn.openwrt.org/openwrt/trunk@10955 3c298f89-4303-0410-b956-a3cf2f4a3e73
2008-04-27 16:56:19 +00:00

299 lines
9.8 KiB
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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;
-}
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