summaryrefslogtreecommitdiffstats
path: root/drivers/i2c/algos/i2c-algo-pca.c
diff options
context:
space:
mode:
authorMauro Carvalho Chehab <mchehab@redhat.com>2012-10-17 09:32:49 -0300
committerMauro Carvalho Chehab <mchehab@redhat.com>2012-10-17 09:32:49 -0300
commit214e2ca2b82d335935a861c253fe94c61ad77aad (patch)
treeeee42ff74d10470789d919b8499737ad0e919360 /drivers/i2c/algos/i2c-algo-pca.c
parent1fdead8ad31d3aa833bc37739273fcde89ace93c (diff)
parentddffeb8c4d0331609ef2581d84de4d763607bd37 (diff)
Merge tag 'v3.7-rc1' into staging/for_v3.8
Linux 3.7-rc1 * tag 'v3.7-rc1': (9579 commits) Linux 3.7-rc1 x86, boot: Explicitly include autoconf.h for hostprogs perf: Fix UAPI fallout ARM: config: make sure that platforms are ordered by option string ARM: config: sort select statements alphanumerically UAPI: (Scripted) Disintegrate include/linux/byteorder UAPI: (Scripted) Disintegrate include/linux UAPI: Unexport linux/blk_types.h UAPI: Unexport part of linux/ppp-comp.h perf: Handle new rbtree implementation procfs: don't need a PATH_MAX allocation to hold a string representation of an int vfs: embed struct filename inside of names_cache allocation if possible audit: make audit_inode take struct filename vfs: make path_openat take a struct filename pointer vfs: turn do_path_lookup into wrapper around struct filename variant audit: allow audit code to satisfy getname requests from its names_list vfs: define struct filename and have getname() return it btrfs: Fix compilation with user namespace support enabled userns: Fix posix_acl_file_xattr_userns gid conversion userns: Properly print bluetooth socket uids ...
Diffstat (limited to 'drivers/i2c/algos/i2c-algo-pca.c')
-rw-r--r--drivers/i2c/algos/i2c-algo-pca.c27
1 files changed, 14 insertions, 13 deletions
diff --git a/drivers/i2c/algos/i2c-algo-pca.c b/drivers/i2c/algos/i2c-algo-pca.c
index 6f5f98d69af..f892a424009 100644
--- a/drivers/i2c/algos/i2c-algo-pca.c
+++ b/drivers/i2c/algos/i2c-algo-pca.c
@@ -46,14 +46,19 @@ static int i2c_debug;
#define pca_set_con(adap, val) pca_outw(adap, I2C_PCA_CON, val)
#define pca_get_con(adap) pca_inw(adap, I2C_PCA_CON)
#define pca_wait(adap) adap->wait_for_completion(adap->data)
-#define pca_reset(adap) adap->reset_chip(adap->data)
-static void pca9665_reset(void *pd)
+static void pca_reset(struct i2c_algo_pca_data *adap)
{
- struct i2c_algo_pca_data *adap = pd;
- pca_outw(adap, I2C_PCA_INDPTR, I2C_PCA_IPRESET);
- pca_outw(adap, I2C_PCA_IND, 0xA5);
- pca_outw(adap, I2C_PCA_IND, 0x5A);
+ if (adap->chip == I2C_PCA_CHIP_9665) {
+ /* Ignore the reset function from the module,
+ * we can use the parallel bus reset.
+ */
+ pca_outw(adap, I2C_PCA_INDPTR, I2C_PCA_IPRESET);
+ pca_outw(adap, I2C_PCA_IND, 0xA5);
+ pca_outw(adap, I2C_PCA_IND, 0x5A);
+ } else {
+ adap->reset_chip(adap->data);
+ }
}
/*
@@ -378,11 +383,12 @@ static unsigned int pca_probe_chip(struct i2c_adapter *adap)
pca_outw(pca_data, I2C_PCA_INDPTR, I2C_PCA_IADR);
if (pca_inw(pca_data, I2C_PCA_IND) == 0xAA) {
printk(KERN_INFO "%s: PCA9665 detected.\n", adap->name);
- return I2C_PCA_CHIP_9665;
+ pca_data->chip = I2C_PCA_CHIP_9665;
} else {
printk(KERN_INFO "%s: PCA9564 detected.\n", adap->name);
- return I2C_PCA_CHIP_9564;
+ pca_data->chip = I2C_PCA_CHIP_9564;
}
+ return pca_data->chip;
}
static int pca_init(struct i2c_adapter *adap)
@@ -456,11 +462,6 @@ static int pca_init(struct i2c_adapter *adap)
*/
int raise_fall_time;
- /* Ignore the reset function from the module,
- * we can use the parallel bus reset
- */
- pca_data->reset_chip = pca9665_reset;
-
if (pca_data->i2c_clock > 1265800) {
printk(KERN_WARNING "%s: I2C clock speed too high."
" Using 1265.8kHz.\n", adap->name);