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Commit | Line | Data |
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1 | Information about PowerPC Sound support | |
2 | ===================================================================== | |
3 | ||
4 | Please mail me (Cort Dougan, cort@fsmlabs.com) if you have questions, | |
5 | comments or corrections. | |
6 | ||
7 | Last Change: 6.16.99 | |
8 | ||
9 | This just covers sound on the PReP and CHRP systems for now and later | |
10 | will contain information on the PowerMac's. | |
11 | ||
12 | Sound on PReP has been tested and is working with the PowerStack and IBM | |
13 | Power Series onboard sound systems which are based on the cs4231(2) chip. | |
14 | The sound options when doing the make config are a bit different from | |
15 | the default, though. | |
16 | ||
17 | The I/O base, irq and dma lines that you enter during the make config | |
18 | are ignored and are set when booting according to the machine type. | |
19 | This is so that one binary can be used for Motorola and IBM machines | |
20 | which use different values and isn't allowed by the driver, so things | |
21 | are hacked together in such a way as to allow this information to be | |
22 | set automatically on boot. | |
23 | ||
24 | 1. Motorola PowerStack PReP machines | |
25 | ||
26 | Enable support for "Crystal CS4232 based (PnP) cards" and for the | |
27 | Microsoft Sound System. The MSS isn't used, but some of the routines | |
28 | that the CS4232 driver uses are in it. | |
29 | ||
30 | Although the options you set are ignored and determined automatically | |
31 | on boot these are included for information only: | |
32 | ||
33 | (830) CS4232 audio I/O base 530, 604, E80 or F40 | |
34 | (10) CS4232 audio IRQ 5, 7, 9, 11, 12 or 15 | |
35 | (6) CS4232 audio DMA 0, 1 or 3 | |
36 | (7) CS4232 second (duplex) DMA 0, 1 or 3 | |
37 | ||
38 | This will allow simultaneous record and playback, as 2 different dma | |
39 | channels are used. | |
40 | ||
41 | The sound will be all left channel and very low volume since the | |
42 | auxiliary input isn't muted by default. I had the changes necessary | |
43 | for this in the kernel but the sound driver maintainer didn't want | |
44 | to include them since it wasn't common in other machines. To fix this | |
45 | you need to mute it using a mixer utility of some sort (if you find one | |
46 | please let me know) or by patching the driver yourself and recompiling. | |
47 | ||
48 | There is a problem on the PowerStack 2's (PowerStack Pro's) using a | |
49 | different irq/drq than the kernel expects. Unfortunately, I don't know | |
50 | which irq/drq it is so if anyone knows please email me. | |
51 | ||
52 | Midi is not supported since the cs4232 driver doesn't support midi yet. | |
53 | ||
54 | 2. IBM PowerPersonal PReP machines | |
55 | ||
56 | I've only tested sound on the Power Personal Series of IBM workstations | |
57 | so if you try it on others please let me know the result. I'm especially | |
58 | interested in the 43p's sound system, which I know nothing about. | |
59 | ||
60 | Enable support for "Crystal CS4232 based (PnP) cards" and for the | |
61 | Microsoft Sound System. The MSS isn't used, but some of the routines | |
62 | that the CS4232 driver uses are in it. | |
63 | ||
64 | Although the options you set are ignored and determined automatically | |
65 | on boot these are included for information only: | |
66 | ||
67 | (530) CS4232 audio I/O base 530, 604, E80 or F40 | |
68 | (5) CS4232 audio IRQ 5, 7, 9, 11, 12 or 15 | |
69 | (1) CS4232 audio DMA 0, 1 or 3 | |
70 | (7) CS4232 second (duplex) DMA 0, 1 or 3 | |
71 | (330) CS4232 MIDI I/O base 330, 370, 3B0 or 3F0 | |
72 | (9) CS4232 MIDI IRQ 5, 7, 9, 11, 12 or 15 | |
73 | ||
74 | This setup does _NOT_ allow for recording yet. | |
75 | ||
76 | Midi is not supported since the cs4232 driver doesn't support midi yet. | |
77 | ||
78 | 2. IBM CHRP | |
79 | ||
80 | I have only tested this on the 43P-150. Build the kernel with the cs4232 | |
81 | set as a module and load the module with irq=9 dma=1 dma2=2 io=0x550 |