From: Michael Krufky Date: Tue, 22 Apr 2008 17:41:54 +0000 (-0300) Subject: V4L/DVB (7136): tda18271: use hybrid_tuner_request_state to manage tuner instances X-Git-Url: https://git.stricted.de/?a=commitdiff_plain;h=f9e315a16a5536120bac09a6d4217b8381c73c5c;p=GitHub%2FLineageOS%2Fandroid_kernel_samsung_universal7580.git V4L/DVB (7136): tda18271: use hybrid_tuner_request_state to manage tuner instances Convert tda18271 to use the new hybrid_tuner_request_state and hybrid_tuner_release_state macros to manage state sharing between hybrid tuner instances. Signed-off-by: Michael Krufky Signed-off-by: Mauro Carvalho Chehab --- diff --git a/drivers/media/dvb/frontends/tda18271-common.c b/drivers/media/dvb/frontends/tda18271-common.c index bca57099061..39496463ccf 100644 --- a/drivers/media/dvb/frontends/tda18271-common.c +++ b/drivers/media/dvb/frontends/tda18271-common.c @@ -125,16 +125,16 @@ int tda18271_read_regs(struct dvb_frontend *fe) unsigned char buf = 0x00; int ret; struct i2c_msg msg[] = { - { .addr = priv->i2c_addr, .flags = 0, + { .addr = priv->i2c_props.addr, .flags = 0, .buf = &buf, .len = 1 }, - { .addr = priv->i2c_addr, .flags = I2C_M_RD, + { .addr = priv->i2c_props.addr, .flags = I2C_M_RD, .buf = regs, .len = 16 } }; tda18271_i2c_gate_ctrl(fe, 1); /* read all registers */ - ret = i2c_transfer(priv->i2c_adap, msg, 2); + ret = i2c_transfer(priv->i2c_props.adap, msg, 2); tda18271_i2c_gate_ctrl(fe, 0); @@ -155,16 +155,16 @@ int tda18271_read_extended(struct dvb_frontend *fe) unsigned char buf = 0x00; int ret, i; struct i2c_msg msg[] = { - { .addr = priv->i2c_addr, .flags = 0, + { .addr = priv->i2c_props.addr, .flags = 0, .buf = &buf, .len = 1 }, - { .addr = priv->i2c_addr, .flags = I2C_M_RD, + { .addr = priv->i2c_props.addr, .flags = I2C_M_RD, .buf = regdump, .len = TDA18271_NUM_REGS } }; tda18271_i2c_gate_ctrl(fe, 1); /* read all registers */ - ret = i2c_transfer(priv->i2c_adap, msg, 2); + ret = i2c_transfer(priv->i2c_props.adap, msg, 2); tda18271_i2c_gate_ctrl(fe, 0); @@ -192,7 +192,7 @@ int tda18271_write_regs(struct dvb_frontend *fe, int idx, int len) struct tda18271_priv *priv = fe->tuner_priv; unsigned char *regs = priv->tda18271_regs; unsigned char buf[TDA18271_NUM_REGS + 1]; - struct i2c_msg msg = { .addr = priv->i2c_addr, .flags = 0, + struct i2c_msg msg = { .addr = priv->i2c_props.addr, .flags = 0, .buf = buf, .len = len + 1 }; int i, ret; @@ -205,7 +205,7 @@ int tda18271_write_regs(struct dvb_frontend *fe, int idx, int len) tda18271_i2c_gate_ctrl(fe, 1); /* write registers */ - ret = i2c_transfer(priv->i2c_adap, &msg, 1); + ret = i2c_transfer(priv->i2c_props.adap, &msg, 1); tda18271_i2c_gate_ctrl(fe, 0); @@ -223,7 +223,8 @@ int tda18271_init_regs(struct dvb_frontend *fe) unsigned char *regs = priv->tda18271_regs; tda_dbg("initializing registers for device @ %d-%04x\n", - i2c_adapter_id(priv->i2c_adap), priv->i2c_addr); + i2c_adapter_id(priv->i2c_props.adap), + priv->i2c_props.addr); /* initialize registers */ switch (priv->id) { diff --git a/drivers/media/dvb/frontends/tda18271-fe.c b/drivers/media/dvb/frontends/tda18271-fe.c index dfe72aaec38..7f7fab7cd5a 100644 --- a/drivers/media/dvb/frontends/tda18271-fe.c +++ b/drivers/media/dvb/frontends/tda18271-fe.c @@ -31,8 +31,8 @@ static int tda18271_cal_on_startup; module_param_named(cal, tda18271_cal_on_startup, int, 0644); MODULE_PARM_DESC(cal, "perform RF tracking filter calibration on startup"); -static LIST_HEAD(tda18271_list); static DEFINE_MUTEX(tda18271_list_mutex); +static LIST_HEAD(hybrid_tuner_instance_list); /*---------------------------------------------------------------------*/ @@ -986,16 +986,9 @@ static int tda18271_release(struct dvb_frontend *fe) mutex_lock(&tda18271_list_mutex); - priv->count--; + if (priv) + hybrid_tuner_release_state(priv); - if (!priv->count) { - tda_dbg("destroying instance @ %d-%04x\n", - i2c_adapter_id(priv->i2c_adap), - priv->i2c_addr); - list_del(&priv->tda18271_list); - - kfree(priv); - } mutex_unlock(&tda18271_list_mutex); fe->tuner_priv = NULL; @@ -1109,7 +1102,8 @@ static int tda18271_get_id(struct dvb_frontend *fe) } tda_info("%s detected @ %d-%04x%s\n", name, - i2c_adapter_id(priv->i2c_adap), priv->i2c_addr, + i2c_adapter_id(priv->i2c_props.adap), + priv->i2c_props.addr, (0 == ret) ? "" : ", device not supported."); return ret; @@ -1136,46 +1130,25 @@ struct dvb_frontend *tda18271_attach(struct dvb_frontend *fe, u8 addr, struct tda18271_config *cfg) { struct tda18271_priv *priv = NULL; - int state_found = 0; + int instance; mutex_lock(&tda18271_list_mutex); - list_for_each_entry(priv, &tda18271_list, tda18271_list) { - if ((i2c_adapter_id(priv->i2c_adap) == i2c_adapter_id(i2c)) && - (priv->i2c_addr == addr)) { - tda_dbg("attaching existing tuner @ %d-%04x\n", - i2c_adapter_id(priv->i2c_adap), - priv->i2c_addr); - priv->count++; - fe->tuner_priv = priv; - state_found = 1; - /* allow dvb driver to override i2c gate setting */ - if ((cfg) && (cfg->gate != TDA18271_GATE_ANALOG)) - priv->gate = cfg->gate; - break; - } - } - if (state_found == 0) { - tda_dbg("creating new tuner instance @ %d-%04x\n", - i2c_adapter_id(i2c), addr); - - priv = kzalloc(sizeof(struct tda18271_priv), GFP_KERNEL); - if (priv == NULL) { - mutex_unlock(&tda18271_list_mutex); - return NULL; - } - - priv->i2c_addr = addr; - priv->i2c_adap = i2c; + instance = hybrid_tuner_request_state(struct tda18271_priv, priv, + hybrid_tuner_instance_list, + i2c, addr, "tda18271"); + switch (instance) { + case 0: + goto fail; + break; + case 1: + /* new tuner instance */ priv->gate = (cfg) ? cfg->gate : TDA18271_GATE_AUTO; priv->cal_initialized = false; mutex_init(&priv->lock); - priv->count++; fe->tuner_priv = priv; - list_add_tail(&priv->tda18271_list, &tda18271_list); - if (tda18271_get_id(fe) < 0) goto fail; @@ -1189,6 +1162,15 @@ struct dvb_frontend *tda18271_attach(struct dvb_frontend *fe, u8 addr, tda18271_rf_cal_init(fe); mutex_unlock(&priv->lock); + break; + default: + /* existing tuner instance */ + fe->tuner_priv = priv; + + /* allow dvb driver to override i2c gate setting */ + if ((cfg) && (cfg->gate != TDA18271_GATE_ANALOG)) + priv->gate = cfg->gate; + break; } /* override default std map with values in config struct */ diff --git a/drivers/media/dvb/frontends/tda18271-priv.h b/drivers/media/dvb/frontends/tda18271-priv.h index 7b939a5325f..840b1803d17 100644 --- a/drivers/media/dvb/frontends/tda18271-priv.h +++ b/drivers/media/dvb/frontends/tda18271-priv.h @@ -24,6 +24,7 @@ #include #include #include +#include "tuner-i2c.h" #include "tda18271.h" #define R_ID 0x00 /* ID byte */ @@ -98,17 +99,15 @@ enum tda18271_ver { }; struct tda18271_priv { - u8 i2c_addr; - struct i2c_adapter *i2c_adap; unsigned char tda18271_regs[TDA18271_NUM_REGS]; - struct list_head tda18271_list; + struct list_head hybrid_tuner_instance_list; + struct tuner_i2c_props i2c_props; enum tda18271_mode mode; enum tda18271_i2c_gate gate; enum tda18271_ver id; - unsigned int count; unsigned int tm_rfcal; unsigned int cal_initialized:1;