[alsa-devel] Fw: [Bug 1155202] [Intel DZ77SL-50K, Intel PantherPoint HDMI, Digital Out, HDMI] No sound at all

[niraj kulkarni]

Removing these 3 usleep ranges is working now. Although I have a doubt for
applying this patch on all chips. There have been a number of boards
released after this particular board, but nobody else is facing this
problem. Since spec does not specify a max on deasserting RST, some boards
might actually take more than 100uS to reset. Will this patch work for
those boards?

@@ -1149,7 +1149,7 @@
        timeout = jiffies + msecs_to_jiffies(100);
        while ((azx_readb(chip, GCTL) & ICH6_GCTL_RESET) &&
                        time_before(jiffies, timeout))
-               usleep_range(500, 1000);
+               cpu_relax();
 }

 /* exit link reset */
@@ -1162,7 +1162,7 @@
        timeout = jiffies + msecs_to_jiffies(100);
        while (!azx_readb(chip, GCTL) &&
                        time_before(jiffies, timeout))
-               usleep_range(500, 1000);
+               cpu_relax();
 }

 /* reset codec link */
@@ -1180,7 +1180,7 @@
        /* delay for >= 100us for codec PLL to settle per spec
         * Rev 0.9 section 5.5.1
         */
-       usleep_range(500, 1000);
+       //usleep_range(500, 1000);

        /* Bring controller out of reset */
        azx_exit_link_reset(chip);