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authorH Hartley Sweeten <hartleys@visionengravers.com>2010-04-14 18:29:17 -0500
committerGreg Kroah-Hartman <gregkh@suse.de>2010-04-30 09:30:10 -0700
commit6536560cabab170ed2969b005bf69a496e9c45bf (patch)
tree0b4453d8abd63b0d44814f1fad6063edce2d157b /drivers
parentd01f42a22ef381ba973958e977209ac9a8667d57 (diff)
Staging: dt3155: fix 50Hz configuration
According to the header file, dt3155_io.h, the 50/60 Hz configuration is controlled by a bit in the I2C CSR2 register (bit 2). The function dt3155_init_isr actually reads the I2C CONFIG register into the global I2C_CSR union variable then modifies the bit. It then does a write to the I2C CONFIG register with the global I2C_CONFIG union variable which is not even set with a value anywhere in the driver. My guess is 50Hz operation doesn't even work as-is. Fix this by actually reading and writing the correct register with the correct value. Signed-off-by: H Hartley Sweeten <hsweeten@visionengravers.com> Cc: Simon Horman <horms@verge.net.au> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
Diffstat (limited to 'drivers')
-rw-r--r--drivers/staging/dt3155/dt3155_drv.c4
1 files changed, 2 insertions, 2 deletions
diff --git a/drivers/staging/dt3155/dt3155_drv.c b/drivers/staging/dt3155/dt3155_drv.c
index e2c44ec6fc45..7ac2c6d8e9a3 100644
--- a/drivers/staging/dt3155/dt3155_drv.c
+++ b/drivers/staging/dt3155/dt3155_drv.c
@@ -464,9 +464,9 @@ static void dt3155_init_isr(int minor)
/* 50/60 Hz should be set before this point but let's make sure it is */
/* right anyway */
- ReadI2C(dt3155_lbase[ minor ], CONFIG, &i2c_csr2.reg);
+ ReadI2C(dt3155_lbase[ minor ], CSR2, &i2c_csr2.reg);
i2c_csr2.fld.HZ50 = FORMAT50HZ;
- WriteI2C(dt3155_lbase[ minor ], CONFIG, i2c_config.reg);
+ WriteI2C(dt3155_lbase[ minor ], CSR2, i2c_csr2.reg);
/* enable busmaster chip, clear flags */