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Subject: [media] stv090x: added function to control GPIOs from the outside Author: Patrick Boettcher <[email protected]> Date: Sun Oct 10 13:45:54 2010 -0300 This patch STV090X adds and exports a function to control the GPIOs of the stv090x-devices. Cc: Manu Abraham <[email protected]> Signed-off-by: Martin Wilks <[email protected]> Signed-off-by: Patrick Boettcher <[email protected]> Signed-off-by: Mauro Carvalho Chehab <[email protected]> drivers/media/dvb/frontends/stv090x.c | 14 ++++++++++++++ drivers/media/dvb/frontends/stv090x.h | 12 ++++++++++++ 2 files changed, 26 insertions(+), 0 deletions(-) --- http://git.linuxtv.org/media_tree.git?a=commitdiff;h=a3953bd9e8ce9879bc25becb9720d1e618d9290b diff --git a/drivers/media/dvb/frontends/stv090x.c b/drivers/media/dvb/frontends/stv090x.c index 4e0fc2c..63cb4f8 100644 --- a/drivers/media/dvb/frontends/stv090x.c +++ b/drivers/media/dvb/frontends/stv090x.c @@ -4516,6 +4516,20 @@ err: return -1; } +int stv090x_set_gpio(struct dvb_frontend *fe, u8 gpio, u8 dir, u8 value, + u8 xor_value) +{ + struct stv090x_state *state = fe->demodulator_priv; + u8 reg = 0; + + STV090x_SETFIELD(reg, GPIOx_OPD_FIELD, dir); + STV090x_SETFIELD(reg, GPIOx_CONFIG_FIELD, value); + STV090x_SETFIELD(reg, GPIOx_XOR_FIELD, xor_value); + + return stv090x_write_reg(state, STV090x_GPIOxCFG(gpio), reg); +} +EXPORT_SYMBOL(stv090x_set_gpio); + static struct dvb_frontend_ops stv090x_ops = { .info = { diff --git a/drivers/media/dvb/frontends/stv090x.h b/drivers/media/dvb/frontends/stv090x.h index dd1b93a..11754f2 100644 --- a/drivers/media/dvb/frontends/stv090x.h +++ b/drivers/media/dvb/frontends/stv090x.h @@ -104,6 +104,11 @@ struct stv090x_config { extern struct dvb_frontend *stv090x_attach(const struct stv090x_config *config, struct i2c_adapter *i2c, enum stv090x_demodulator demod); + +/* dir = 0 -> output, dir = 1 -> input/open-drain */ +extern int stv090x_set_gpio(struct dvb_frontend *fe, u8 gpio, + u8 dir, u8 value, u8 xor_value); + #else static inline struct dvb_frontend *stv090x_attach(const struct stv090x_config *config, @@ -113,6 +118,13 @@ static inline struct dvb_frontend *stv090x_attach(const struct stv090x_config *c printk(KERN_WARNING "%s: driver disabled by Kconfig\n", __func__); return NULL; } + +static inline int stv090x_set_gpio(struct dvb_frontend *fe, u8 gpio, + u8 opd, u8 value, u8 xor_value) +{ + printk(KERN_WARNING "%s: driver disabled by Kconfig\n", __func__); + return -ENODEV; +} #endif /* CONFIG_DVB_STV090x */ #endif /* __STV090x_H */ _______________________________________________ linuxtv-commits mailing list [email protected] http://www.linuxtv.org/cgi-bin/mailman/listinfo/linuxtv-commits
