diff options
Diffstat (limited to 'drivers/media/dvb/frontends/isl6423.c')
| -rw-r--r-- | drivers/media/dvb/frontends/isl6423.c | 308 |
1 files changed, 0 insertions, 308 deletions
diff --git a/drivers/media/dvb/frontends/isl6423.c b/drivers/media/dvb/frontends/isl6423.c deleted file mode 100644 index dca5bebfeeb5..000000000000 --- a/drivers/media/dvb/frontends/isl6423.c +++ /dev/null @@ -1,308 +0,0 @@ -/* - Intersil ISL6423 SEC and LNB Power supply controller - - Copyright (C) Manu Abraham <abraham.manu@gmail.com> - - This program is free software; you can redistribute it and/or modify - it under the terms of the GNU General Public License as published by - the Free Software Foundation; either version 2 of the License, or - (at your option) any later version. - - This program is distributed in the hope that it will be useful, - 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., 675 Mass Ave, Cambridge, MA 02139, USA. -*/ - -#include <linux/delay.h> -#include <linux/errno.h> -#include <linux/init.h> -#include <linux/kernel.h> -#include <linux/module.h> -#include <linux/string.h> -#include <linux/slab.h> - -#include "dvb_frontend.h" -#include "isl6423.h" - -static unsigned int verbose; -module_param(verbose, int, 0644); -MODULE_PARM_DESC(verbose, "Set Verbosity level"); - -#define FE_ERROR 0 -#define FE_NOTICE 1 -#define FE_INFO 2 -#define FE_DEBUG 3 -#define FE_DEBUGREG 4 - -#define dprintk(__y, __z, format, arg...) do { \ - if (__z) { \ - if ((verbose > FE_ERROR) && (verbose > __y)) \ - printk(KERN_ERR "%s: " format "\n", __func__ , ##arg); \ - else if ((verbose > FE_NOTICE) && (verbose > __y)) \ - printk(KERN_NOTICE "%s: " format "\n", __func__ , ##arg); \ - else if ((verbose > FE_INFO) && (verbose > __y)) \ - printk(KERN_INFO "%s: " format "\n", __func__ , ##arg); \ - else if ((verbose > FE_DEBUG) && (verbose > __y)) \ - printk(KERN_DEBUG "%s: " format "\n", __func__ , ##arg); \ - } else { \ - if (verbose > __y) \ - printk(format, ##arg); \ - } \ -} while (0) - -struct isl6423_dev { - const struct isl6423_config *config; - struct i2c_adapter *i2c; - - u8 reg_3; - u8 reg_4; - - unsigned int verbose; -}; - -static int isl6423_write(struct isl6423_dev *isl6423, u8 reg) -{ - struct i2c_adapter *i2c = isl6423->i2c; - u8 addr = isl6423->config->addr; - int err = 0; - - struct i2c_msg msg = { .addr = addr, .flags = 0, .buf = ®, .len = 1 }; - - dprintk(FE_DEBUG, 1, "write reg %02X", reg); - err = i2c_transfer(i2c, &msg, 1); - if (err < 0) - goto exit; - return 0; - -exit: - dprintk(FE_ERROR, 1, "I/O error <%d>", err); - return err; -} - -static int isl6423_set_modulation(struct dvb_frontend *fe) -{ - struct isl6423_dev *isl6423 = (struct isl6423_dev *) fe->sec_priv; - const struct isl6423_config *config = isl6423->config; - int err = 0; - u8 reg_2 = 0; - - reg_2 = 0x01 << 5; - - if (config->mod_extern) - reg_2 |= (1 << 3); - else - reg_2 |= (1 << 4); - - err = isl6423_write(isl6423, reg_2); - if (err < 0) - goto exit; - return 0; - -exit: - dprintk(FE_ERROR, 1, "I/O error <%d>", err); - return err; -} - -static int isl6423_voltage_boost(struct dvb_frontend *fe, long arg) -{ - struct isl6423_dev *isl6423 = (struct isl6423_dev *) fe->sec_priv; - u8 reg_3 = isl6423->reg_3; - u8 reg_4 = isl6423->reg_4; - int err = 0; - - if (arg) { - /* EN = 1, VSPEN = 1, VBOT = 1 */ - reg_4 |= (1 << 4); - reg_4 |= 0x1; - reg_3 |= (1 << 3); - } else { - /* EN = 1, VSPEN = 1, VBOT = 0 */ - reg_4 |= (1 << 4); - reg_4 &= ~0x1; - reg_3 |= (1 << 3); - } - err = isl6423_write(isl6423, reg_3); - if (err < 0) - goto exit; - - err = isl6423_write(isl6423, reg_4); - if (err < 0) - goto exit; - - isl6423->reg_3 = reg_3; - isl6423->reg_4 = reg_4; - - return 0; -exit: - dprintk(FE_ERROR, 1, "I/O error <%d>", err); - return err; -} - - -static int isl6423_set_voltage(struct dvb_frontend *fe, - enum fe_sec_voltage voltage) -{ - struct isl6423_dev *isl6423 = (struct isl6423_dev *) fe->sec_priv; - u8 reg_3 = isl6423->reg_3; - u8 reg_4 = isl6423->reg_4; - int err = 0; - - switch (voltage) { - case SEC_VOLTAGE_OFF: - /* EN = 0 */ - reg_4 &= ~(1 << 4); - break; - - case SEC_VOLTAGE_13: - /* EN = 1, VSPEN = 1, VTOP = 0, VBOT = 0 */ - reg_4 |= (1 << 4); - reg_4 &= ~0x3; - reg_3 |= (1 << 3); - break; - - case SEC_VOLTAGE_18: - /* EN = 1, VSPEN = 1, VTOP = 1, VBOT = 0 */ - reg_4 |= (1 << 4); - reg_4 |= 0x2; - reg_4 &= ~0x1; - reg_3 |= (1 << 3); - break; - - default: - break; - } - err = isl6423_write(isl6423, reg_3); - if (err < 0) - goto exit; - - err = isl6423_write(isl6423, reg_4); - if (err < 0) - goto exit; - - isl6423->reg_3 = reg_3; - isl6423->reg_4 = reg_4; - - return 0; -exit: - dprintk(FE_ERROR, 1, "I/O error <%d>", err); - return err; -} - -static int isl6423_set_current(struct dvb_frontend *fe) -{ - struct isl6423_dev *isl6423 = (struct isl6423_dev *) fe->sec_priv; - u8 reg_3 = isl6423->reg_3; - const struct isl6423_config *config = isl6423->config; - int err = 0; - - switch (config->current_max) { - case SEC_CURRENT_275m: - /* 275mA */ - /* ISELH = 0, ISELL = 0 */ - reg_3 &= ~0x3; - break; - - case SEC_CURRENT_515m: - /* 515mA */ - /* ISELH = 0, ISELL = 1 */ - reg_3 &= ~0x2; - reg_3 |= 0x1; - break; - - case SEC_CURRENT_635m: - /* 635mA */ - /* ISELH = 1, ISELL = 0 */ - reg_3 &= ~0x1; - reg_3 |= 0x2; - break; - - case SEC_CURRENT_800m: - /* 800mA */ - /* ISELH = 1, ISELL = 1 */ - reg_3 |= 0x3; - break; - } - - err = isl6423_write(isl6423, reg_3); - if (err < 0) - goto exit; - - switch (config->curlim) { - case SEC_CURRENT_LIM_ON: - /* DCL = 0 */ - reg_3 &= ~0x10; - break; - - case SEC_CURRENT_LIM_OFF: - /* DCL = 1 */ - reg_3 |= 0x10; - break; - } - - err = isl6423_write(isl6423, reg_3); - if (err < 0) - goto exit; - - isl6423->reg_3 = reg_3; - - return 0; -exit: - dprintk(FE_ERROR, 1, "I/O error <%d>", err); - return err; -} - -static void isl6423_release(struct dvb_frontend *fe) -{ - isl6423_set_voltage(fe, SEC_VOLTAGE_OFF); - - kfree(fe->sec_priv); - fe->sec_priv = NULL; -} - -struct dvb_frontend *isl6423_attach(struct dvb_frontend *fe, - struct i2c_adapter *i2c, - const struct isl6423_config *config) -{ - struct isl6423_dev *isl6423; - - isl6423 = kzalloc(sizeof(struct isl6423_dev), GFP_KERNEL); - if (!isl6423) - return NULL; - - isl6423->config = config; - isl6423->i2c = i2c; - fe->sec_priv = isl6423; - - /* SR3H = 0, SR3M = 1, SR3L = 0 */ - isl6423->reg_3 = 0x02 << 5; - /* SR4H = 0, SR4M = 1, SR4L = 1 */ - isl6423->reg_4 = 0x03 << 5; - - if (isl6423_set_current(fe)) - goto exit; - - if (isl6423_set_modulation(fe)) - goto exit; - - fe->ops.release_sec = isl6423_release; - fe->ops.set_voltage = isl6423_set_voltage; - fe->ops.enable_high_lnb_voltage = isl6423_voltage_boost; - isl6423->verbose = verbose; - - return fe; - -exit: - kfree(isl6423); - fe->sec_priv = NULL; - return NULL; -} -EXPORT_SYMBOL(isl6423_attach); - -MODULE_DESCRIPTION("ISL6423 SEC"); -MODULE_AUTHOR("Manu Abraham"); -MODULE_LICENSE("GPL"); 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