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path: root/drivers/platform/x86/apple-gmux.c
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Diffstat (limited to 'drivers/platform/x86/apple-gmux.c')
-rw-r--r--drivers/platform/x86/apple-gmux.c24
1 files changed, 13 insertions, 11 deletions
diff --git a/drivers/platform/x86/apple-gmux.c b/drivers/platform/x86/apple-gmux.c
index dfb1a92ce949..db8f63841b42 100644
--- a/drivers/platform/x86/apple-gmux.c
+++ b/drivers/platform/x86/apple-gmux.c
@@ -101,7 +101,7 @@ static void gmux_pio_write32(struct apple_gmux_data *gmux_data, int port,
for (i = 0; i < 4; i++) {
tmpval = (val >> (i * 8)) & 0xff;
- outb(tmpval, port + i);
+ outb(tmpval, gmux_data->iostart + port + i);
}
}
@@ -142,8 +142,9 @@ static u8 gmux_index_read8(struct apple_gmux_data *gmux_data, int port)
u8 val;
mutex_lock(&gmux_data->index_lock);
- outb((port & 0xff), gmux_data->iostart + GMUX_PORT_READ);
gmux_index_wait_ready(gmux_data);
+ outb((port & 0xff), gmux_data->iostart + GMUX_PORT_READ);
+ gmux_index_wait_complete(gmux_data);
val = inb(gmux_data->iostart + GMUX_PORT_VALUE);
mutex_unlock(&gmux_data->index_lock);
@@ -166,8 +167,9 @@ static u32 gmux_index_read32(struct apple_gmux_data *gmux_data, int port)
u32 val;
mutex_lock(&gmux_data->index_lock);
- outb((port & 0xff), gmux_data->iostart + GMUX_PORT_READ);
gmux_index_wait_ready(gmux_data);
+ outb((port & 0xff), gmux_data->iostart + GMUX_PORT_READ);
+ gmux_index_wait_complete(gmux_data);
val = inl(gmux_data->iostart + GMUX_PORT_VALUE);
mutex_unlock(&gmux_data->index_lock);
@@ -461,18 +463,22 @@ static int __devinit gmux_probe(struct pnp_dev *pnp,
ver_release = gmux_read8(gmux_data, GMUX_PORT_VERSION_RELEASE);
if (ver_major == 0xff && ver_minor == 0xff && ver_release == 0xff) {
if (gmux_is_indexed(gmux_data)) {
+ u32 version;
mutex_init(&gmux_data->index_lock);
gmux_data->indexed = true;
+ version = gmux_read32(gmux_data,
+ GMUX_PORT_VERSION_MAJOR);
+ ver_major = (version >> 24) & 0xff;
+ ver_minor = (version >> 16) & 0xff;
+ ver_release = (version >> 8) & 0xff;
} else {
pr_info("gmux device not present\n");
ret = -ENODEV;
goto err_release;
}
- pr_info("Found indexed gmux\n");
- } else {
- pr_info("Found gmux version %d.%d.%d\n", ver_major, ver_minor,
- ver_release);
}
+ pr_info("Found gmux version %d.%d.%d [%s]\n", ver_major, ver_minor,
+ ver_release, (gmux_data->indexed ? "indexed" : "classic"));
memset(&props, 0, sizeof(props));
props.type = BACKLIGHT_PLATFORM;
@@ -505,9 +511,7 @@ static int __devinit gmux_probe(struct pnp_dev *pnp,
* Disable the other backlight choices.
*/
acpi_video_dmi_promote_vendor();
-#if defined (CONFIG_ACPI_VIDEO) || defined (CONFIG_ACPI_VIDEO_MODULE)
acpi_video_unregister();
-#endif
apple_bl_unregister();
gmux_data->power_state = VGA_SWITCHEROO_ON;
@@ -593,9 +597,7 @@ static void __devexit gmux_remove(struct pnp_dev *pnp)
kfree(gmux_data);
acpi_video_dmi_demote_vendor();
-#if defined (CONFIG_ACPI_VIDEO) || defined (CONFIG_ACPI_VIDEO_MODULE)
acpi_video_register();
-#endif
apple_bl_register();
}