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authorVignesh R <vigneshr@ti.com>2016-08-02 10:14:24 +0530
committerTom Rini <trini@konsulko.com>2016-08-08 13:32:53 -0400
commit5746b0df9c09fe5e16412118d1977b5d7cb5fed5 (patch)
tree4501f36e0bc0a577cceede4318c7149396b164e8 /lib
parent5aa79f26762d197324866a0d0c2b31601a7fc8ee (diff)
gpio: Add driver for TI PCF8575 I2C GPIO expander
TI's PCF8575 is a 16-bit I2C GPIO expander.The device features a 16-bit quasi-bidirectional I/O ports. Each quasi-bidirectional I/O can be used as an input or output without the use of a data-direction control signal. The I/Os should be high before being used as inputs. Read the device documentation for more details[1]. This driver is based on pcf857x driver available in Linux v4.7 kernel. It supports basic reading and writing of gpio pins. [1] http://www.ti.com/lit/ds/symlink/pcf8575.pdf Signed-off-by: Vignesh R <vigneshr@ti.com> Reviewed-by: Tom Rini <trini@konsulko.com> Reviewed-by: Simon Glass <sjg@chromium.org> Reviewed-by: Mugunthan V N <mugunthanvnm@ti.com>
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