From e09b41010ba33a20a87472ee821fa407a5b8da36 Mon Sep 17 00:00:00 2001 From: José Pekkarinen Date: Mon, 11 Apr 2016 10:41:07 +0300 Subject: These changes are the raw update to linux-4.4.6-rt14. Kernel sources are taken from kernel.org, and rt patch from the rt wiki download page. MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit During the rebasing, the following patch collided: Force tick interrupt and get rid of softirq magic(I70131fb85). Collisions have been removed because its logic was found on the source already. Change-Id: I7f57a4081d9deaa0d9ccfc41a6c8daccdee3b769 Signed-off-by: José Pekkarinen --- kernel/drivers/media/dvb-frontends/a8293.c | 175 ++++++++++++----------------- 1 file changed, 73 insertions(+), 102 deletions(-) (limited to 'kernel/drivers/media/dvb-frontends/a8293.c') diff --git a/kernel/drivers/media/dvb-frontends/a8293.c b/kernel/drivers/media/dvb-frontends/a8293.c index 780da5813..e1e9bddcf 100644 --- a/kernel/drivers/media/dvb-frontends/a8293.c +++ b/kernel/drivers/media/dvb-frontends/a8293.c @@ -12,157 +12,128 @@ * but WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the * GNU General Public License for more details. - * - * You should have received a copy of the GNU General Public License along - * with this program; if not, write to the Free Software Foundation, Inc., - * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA. */ -#include "dvb_frontend.h" #include "a8293.h" -struct a8293_priv { - struct i2c_adapter *i2c; - const struct a8293_config *cfg; +struct a8293_dev { + struct i2c_client *client; u8 reg[2]; }; -static int a8293_i2c(struct a8293_priv *priv, u8 *val, int len, bool rd) -{ - int ret; - struct i2c_msg msg[1] = { - { - .addr = priv->cfg->i2c_addr, - .len = len, - .buf = val, - } - }; - - if (rd) - msg[0].flags = I2C_M_RD; - else - msg[0].flags = 0; - - ret = i2c_transfer(priv->i2c, msg, 1); - if (ret == 1) { - ret = 0; - } else { - dev_warn(&priv->i2c->dev, "%s: i2c failed=%d rd=%d\n", - KBUILD_MODNAME, ret, rd); - ret = -EREMOTEIO; - } - - return ret; -} - -static int a8293_wr(struct a8293_priv *priv, u8 *val, int len) -{ - return a8293_i2c(priv, val, len, 0); -} - -static int a8293_rd(struct a8293_priv *priv, u8 *val, int len) -{ - return a8293_i2c(priv, val, len, 1); -} - static int a8293_set_voltage(struct dvb_frontend *fe, - fe_sec_voltage_t fe_sec_voltage) + enum fe_sec_voltage fe_sec_voltage) { - struct a8293_priv *priv = fe->sec_priv; + struct a8293_dev *dev = fe->sec_priv; + struct i2c_client *client = dev->client; int ret; + u8 reg0, reg1; - dev_dbg(&priv->i2c->dev, "%s: fe_sec_voltage=%d\n", __func__, - fe_sec_voltage); + dev_dbg(&client->dev, "fe_sec_voltage=%d\n", fe_sec_voltage); switch (fe_sec_voltage) { case SEC_VOLTAGE_OFF: /* ENB=0 */ - priv->reg[0] = 0x10; + reg0 = 0x10; break; case SEC_VOLTAGE_13: /* VSEL0=1, VSEL1=0, VSEL2=0, VSEL3=0, ENB=1*/ - priv->reg[0] = 0x31; + reg0 = 0x31; break; case SEC_VOLTAGE_18: /* VSEL0=0, VSEL1=0, VSEL2=0, VSEL3=1, ENB=1*/ - priv->reg[0] = 0x38; + reg0 = 0x38; break; default: ret = -EINVAL; goto err; } + if (reg0 != dev->reg[0]) { + ret = i2c_master_send(client, ®0, 1); + if (ret < 0) + goto err; + dev->reg[0] = reg0; + } - ret = a8293_wr(priv, &priv->reg[0], 1); - if (ret) - goto err; + /* TMODE=0, TGATE=1 */ + reg1 = 0x82; + if (reg1 != dev->reg[1]) { + ret = i2c_master_send(client, ®1, 1); + if (ret < 0) + goto err; + dev->reg[1] = reg1; + } usleep_range(1500, 50000); - - return ret; + return 0; err: - dev_dbg(&priv->i2c->dev, "%s: failed=%d\n", __func__, ret); + dev_dbg(&client->dev, "failed=%d\n", ret); return ret; } -static void a8293_release_sec(struct dvb_frontend *fe) -{ - a8293_set_voltage(fe, SEC_VOLTAGE_OFF); - - kfree(fe->sec_priv); - fe->sec_priv = NULL; -} - -struct dvb_frontend *a8293_attach(struct dvb_frontend *fe, - struct i2c_adapter *i2c, const struct a8293_config *cfg) +static int a8293_probe(struct i2c_client *client, + const struct i2c_device_id *id) { + struct a8293_dev *dev; + struct a8293_platform_data *pdata = client->dev.platform_data; + struct dvb_frontend *fe = pdata->dvb_frontend; int ret; - struct a8293_priv *priv = NULL; u8 buf[2]; - /* allocate memory for the internal priv */ - priv = kzalloc(sizeof(struct a8293_priv), GFP_KERNEL); - if (priv == NULL) { + dev = kzalloc(sizeof(*dev), GFP_KERNEL); + if (!dev) { ret = -ENOMEM; goto err; } - /* setup the priv */ - priv->i2c = i2c; - priv->cfg = cfg; - fe->sec_priv = priv; + dev->client = client; /* check if the SEC is there */ - ret = a8293_rd(priv, buf, 2); - if (ret) - goto err; - - /* ENB=0 */ - priv->reg[0] = 0x10; - ret = a8293_wr(priv, &priv->reg[0], 1); - if (ret) - goto err; - - /* TMODE=0, TGATE=1 */ - priv->reg[1] = 0x82; - ret = a8293_wr(priv, &priv->reg[1], 1); - if (ret) - goto err; - - fe->ops.release_sec = a8293_release_sec; + ret = i2c_master_recv(client, buf, 2); + if (ret < 0) + goto err_kfree; /* override frontend ops */ fe->ops.set_voltage = a8293_set_voltage; + fe->sec_priv = dev; + i2c_set_clientdata(client, dev); - dev_info(&priv->i2c->dev, "%s: Allegro A8293 SEC attached\n", - KBUILD_MODNAME); - - return fe; + dev_info(&client->dev, "Allegro A8293 SEC successfully attached\n"); + return 0; +err_kfree: + kfree(dev); err: - dev_dbg(&i2c->dev, "%s: failed=%d\n", __func__, ret); - kfree(priv); - return NULL; + dev_dbg(&client->dev, "failed=%d\n", ret); + return ret; +} + +static int a8293_remove(struct i2c_client *client) +{ + struct a8293_dev *dev = i2c_get_clientdata(client); + + dev_dbg(&client->dev, "\n"); + + kfree(dev); + return 0; } -EXPORT_SYMBOL(a8293_attach); + +static const struct i2c_device_id a8293_id_table[] = { + {"a8293", 0}, + {} +}; +MODULE_DEVICE_TABLE(i2c, a8293_id_table); + +static struct i2c_driver a8293_driver = { + .driver = { + .name = "a8293", + .suppress_bind_attrs = true, + }, + .probe = a8293_probe, + .remove = a8293_remove, + .id_table = a8293_id_table, +}; + +module_i2c_driver(a8293_driver); MODULE_AUTHOR("Antti Palosaari "); MODULE_DESCRIPTION("Allegro A8293 SEC driver"); -- cgit 1.2.3-korg