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authorSean MacLennan <smaclennan@pikatech.com>2008-07-26 11:45:10 +1000
committerJosh Boyer <jwboyer@linux.vnet.ibm.com>2008-08-04 21:42:07 -0400
commit048040a36d46dced846b058bc083c212e0c75615 (patch)
tree2399e931585f1c676529ddd879ec6ee9b7841f58 /arch/powerpc/platforms/44x
parent1c5402ba55e809f0b685f07728794ea27b197f33 (diff)
downloadop-kernel-dev-048040a36d46dced846b058bc083c212e0c75615.zip
op-kernel-dev-048040a36d46dced846b058bc083c212e0c75615.tar.gz
powerpc/4xx: Cleanup Warp for i2c driver changes.
This patch removes the i2c code which is now obsolete due to the new ibm iic driver walking the device tree for child nodes. There are two other small cleanups that came indirectly from the ad7414 code review. Make sure Tlow is correct and handle the case where i2c_smbus_read_word_data fails. Signed-off-by: Sean MacLennan <smaclennan@pikatech.com> Signed-off-by: Josh Boyer <jwboyer@linux.vnet.ibm.com>
Diffstat (limited to 'arch/powerpc/platforms/44x')
-rw-r--r--arch/powerpc/platforms/44x/warp.c25
1 files changed, 10 insertions, 15 deletions
diff --git a/arch/powerpc/platforms/44x/warp.c b/arch/powerpc/platforms/44x/warp.c
index 9565995..960edf8 100644
--- a/arch/powerpc/platforms/44x/warp.c
+++ b/arch/powerpc/platforms/44x/warp.c
@@ -30,18 +30,6 @@ static __initdata struct of_device_id warp_of_bus[] = {
{},
};
-static __initdata struct i2c_board_info warp_i2c_info[] = {
- { I2C_BOARD_INFO("ad7414", 0x4a) }
-};
-
-static int __init warp_arch_init(void)
-{
- /* This should go away once support is moved to the dts. */
- i2c_register_board_info(0, warp_i2c_info, ARRAY_SIZE(warp_i2c_info));
- return 0;
-}
-machine_arch_initcall(warp, warp_arch_init);
-
static int __init warp_device_probe(void)
{
of_platform_bus_probe(NULL, warp_of_bus, NULL);
@@ -223,7 +211,7 @@ static void pika_setup_critical_temp(struct i2c_client *client)
/* These registers are in 1 degree increments. */
i2c_smbus_write_byte_data(client, 2, 65); /* Thigh */
- i2c_smbus_write_byte_data(client, 3, 55); /* Tlow */
+ i2c_smbus_write_byte_data(client, 3, 0); /* Tlow */
np = of_find_compatible_node(NULL, NULL, "adi,ad7414");
if (np == NULL) {
@@ -289,8 +277,15 @@ found_it:
printk(KERN_INFO "PIKA DTM thread running.\n");
while (!kthread_should_stop()) {
- u16 temp = swab16(i2c_smbus_read_word_data(client, 0));
- out_be32(fpga + 0x20, temp);
+ int val;
+
+ val = i2c_smbus_read_word_data(client, 0);
+ if (val < 0)
+ dev_dbg(&client->dev, "DTM read temp failed.\n");
+ else {
+ s16 temp = swab16(val);
+ out_be32(fpga + 0x20, temp);
+ }
pika_dtm_check_fan(fpga);
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