diff options
| author | Dmitry Torokhov <dmitry.torokhov@gmail.com> | 2010-03-08 23:17:32 -0800 |
|---|---|---|
| committer | Dmitry Torokhov <dmitry.torokhov@gmail.com> | 2010-03-08 23:17:32 -0800 |
| commit | ce67eef6a112bb283c6db39f9195800f31f5599a (patch) | |
| tree | 34f2e7fbd0b9838abba482dbb1a7db09e6fbb53c /drivers/pcmcia/o2micro.h | |
| parent | 776943fd6f104a6e8457dc95a17282e69e963666 (diff) | |
| parent | 57d54889cd00db2752994b389ba714138652e60c (diff) | |
Merge commit 'v2.6.34-rc1' into for-linus
Diffstat (limited to 'drivers/pcmcia/o2micro.h')
| -rw-r--r-- | drivers/pcmcia/o2micro.h | 45 |
1 files changed, 29 insertions, 16 deletions
diff --git a/drivers/pcmcia/o2micro.h b/drivers/pcmcia/o2micro.h index 624442fc0d35..e74bebac2695 100644 --- a/drivers/pcmcia/o2micro.h +++ b/drivers/pcmcia/o2micro.h @@ -116,13 +116,12 @@ static int o2micro_override(struct yenta_socket *socket) * from Eric Still, 02Micro. */ u8 a, b; + bool use_speedup; if (PCI_FUNC(socket->dev->devfn) == 0) { a = config_readb(socket, O2_RESERVED1); b = config_readb(socket, O2_RESERVED2); - - dev_printk(KERN_INFO, &socket->dev->dev, - "O2: res at 0x94/0xD4: %02x/%02x\n", a, b); + dev_dbg(&socket->dev->dev, "O2: 0x94/0xD4: %02x/%02x\n", a, b); switch (socket->dev->device) { /* @@ -135,23 +134,37 @@ static int o2micro_override(struct yenta_socket *socket) case PCI_DEVICE_ID_O2_6812: case PCI_DEVICE_ID_O2_6832: case PCI_DEVICE_ID_O2_6836: - case PCI_DEVICE_ID_O2_6933: - dev_printk(KERN_INFO, &socket->dev->dev, - "Yenta O2: old bridge, disabling read " - "prefetch/write burst\n"); - config_writeb(socket, O2_RESERVED1, - a & ~(O2_RES_READ_PREFETCH | O2_RES_WRITE_BURST)); - config_writeb(socket, O2_RESERVED2, - b & ~(O2_RES_READ_PREFETCH | O2_RES_WRITE_BURST)); + case PCI_DEVICE_ID_O2_6933: + use_speedup = false; break; - default: - dev_printk(KERN_INFO , &socket->dev->dev, - "O2: enabling read prefetch/write burst\n"); + use_speedup = true; + break; + } + + /* the user may override our decision */ + if (strcasecmp(o2_speedup, "on") == 0) + use_speedup = true; + else if (strcasecmp(o2_speedup, "off") == 0) + use_speedup = false; + else if (strcasecmp(o2_speedup, "default") != 0) + dev_warn(&socket->dev->dev, + "O2: Unknown parameter, using 'default'"); + + if (use_speedup) { + dev_info(&socket->dev->dev, + "O2: enabling read prefetch/write burst\n"); + config_writeb(socket, O2_RESERVED1, + a | O2_RES_READ_PREFETCH | O2_RES_WRITE_BURST); + config_writeb(socket, O2_RESERVED2, + b | O2_RES_READ_PREFETCH | O2_RES_WRITE_BURST); + } else { + dev_info(&socket->dev->dev, + "O2: disabling read prefetch/write burst\n"); config_writeb(socket, O2_RESERVED1, - a | O2_RES_READ_PREFETCH | O2_RES_WRITE_BURST); + a & ~(O2_RES_READ_PREFETCH | O2_RES_WRITE_BURST)); config_writeb(socket, O2_RESERVED2, - b | O2_RES_READ_PREFETCH | O2_RES_WRITE_BURST); + b & ~(O2_RES_READ_PREFETCH | O2_RES_WRITE_BURST)); } } |