^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1) // SPDX-License-Identifier: GPL-2.0-or-later
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3) * isl6405.c - driver for dual lnb supply and control ic ISL6405
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5) * Copyright (C) 2008 Hartmut Hackmann
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 6) * Copyright (C) 2006 Oliver Endriss
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 7) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 8) * the project's page is at https://linuxtv.org
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 9) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 10) #include <linux/delay.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 11) #include <linux/errno.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 12) #include <linux/init.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 13) #include <linux/kernel.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 14) #include <linux/module.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 15) #include <linux/string.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 16) #include <linux/slab.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 17)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 18) #include <media/dvb_frontend.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 19) #include "isl6405.h"
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 20)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 21) struct isl6405 {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 22) u8 config;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 23) u8 override_or;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 24) u8 override_and;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 25) struct i2c_adapter *i2c;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 26) u8 i2c_addr;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 27) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 28)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 29) static int isl6405_set_voltage(struct dvb_frontend *fe,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 30) enum fe_sec_voltage voltage)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 31) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 32) struct isl6405 *isl6405 = (struct isl6405 *) fe->sec_priv;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 33) struct i2c_msg msg = { .addr = isl6405->i2c_addr, .flags = 0,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 34) .buf = &isl6405->config,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 35) .len = sizeof(isl6405->config) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 36)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 37) if (isl6405->override_or & 0x80) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 38) isl6405->config &= ~(ISL6405_VSEL2 | ISL6405_EN2);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 39) switch (voltage) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 40) case SEC_VOLTAGE_OFF:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 41) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 42) case SEC_VOLTAGE_13:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 43) isl6405->config |= ISL6405_EN2;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 44) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 45) case SEC_VOLTAGE_18:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 46) isl6405->config |= (ISL6405_EN2 | ISL6405_VSEL2);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 47) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 48) default:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 49) return -EINVAL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 50) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 51) } else {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 52) isl6405->config &= ~(ISL6405_VSEL1 | ISL6405_EN1);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 53) switch (voltage) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 54) case SEC_VOLTAGE_OFF:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 55) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 56) case SEC_VOLTAGE_13:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 57) isl6405->config |= ISL6405_EN1;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 58) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 59) case SEC_VOLTAGE_18:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 60) isl6405->config |= (ISL6405_EN1 | ISL6405_VSEL1);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 61) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 62) default:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 63) return -EINVAL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 64) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 65) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 66) isl6405->config |= isl6405->override_or;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 67) isl6405->config &= isl6405->override_and;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 68)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 69) return (i2c_transfer(isl6405->i2c, &msg, 1) == 1) ? 0 : -EIO;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 70) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 71)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 72) static int isl6405_enable_high_lnb_voltage(struct dvb_frontend *fe, long arg)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 73) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 74) struct isl6405 *isl6405 = (struct isl6405 *) fe->sec_priv;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 75) struct i2c_msg msg = { .addr = isl6405->i2c_addr, .flags = 0,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 76) .buf = &isl6405->config,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 77) .len = sizeof(isl6405->config) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 78)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 79) if (isl6405->override_or & 0x80) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 80) if (arg)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 81) isl6405->config |= ISL6405_LLC2;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 82) else
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 83) isl6405->config &= ~ISL6405_LLC2;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 84) } else {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 85) if (arg)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 86) isl6405->config |= ISL6405_LLC1;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 87) else
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 88) isl6405->config &= ~ISL6405_LLC1;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 89) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 90) isl6405->config |= isl6405->override_or;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 91) isl6405->config &= isl6405->override_and;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 92)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 93) return (i2c_transfer(isl6405->i2c, &msg, 1) == 1) ? 0 : -EIO;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 94) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 95)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 96) static void isl6405_release(struct dvb_frontend *fe)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 97) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 98) /* power off */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 99) isl6405_set_voltage(fe, SEC_VOLTAGE_OFF);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 100)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 101) /* free */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 102) kfree(fe->sec_priv);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 103) fe->sec_priv = NULL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 104) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 105)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 106) struct dvb_frontend *isl6405_attach(struct dvb_frontend *fe, struct i2c_adapter *i2c,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 107) u8 i2c_addr, u8 override_set, u8 override_clear)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 108) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 109) struct isl6405 *isl6405 = kmalloc(sizeof(struct isl6405), GFP_KERNEL);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 110) if (!isl6405)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 111) return NULL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 112)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 113) /* default configuration */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 114) if (override_set & 0x80)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 115) isl6405->config = ISL6405_ISEL2;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 116) else
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 117) isl6405->config = ISL6405_ISEL1;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 118) isl6405->i2c = i2c;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 119) isl6405->i2c_addr = i2c_addr;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 120) fe->sec_priv = isl6405;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 121)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 122) /* bits which should be forced to '1' */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 123) isl6405->override_or = override_set;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 124)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 125) /* bits which should be forced to '0' */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 126) isl6405->override_and = ~override_clear;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 127)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 128) /* detect if it is present or not */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 129) if (isl6405_set_voltage(fe, SEC_VOLTAGE_OFF)) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 130) kfree(isl6405);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 131) fe->sec_priv = NULL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 132) return NULL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 133) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 134)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 135) /* install release callback */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 136) fe->ops.release_sec = isl6405_release;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 137)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 138) /* override frontend ops */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 139) fe->ops.set_voltage = isl6405_set_voltage;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 140) fe->ops.enable_high_lnb_voltage = isl6405_enable_high_lnb_voltage;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 141)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 142) return fe;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 143) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 144) EXPORT_SYMBOL(isl6405_attach);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 145)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 146) MODULE_DESCRIPTION("Driver for lnb supply and control ic isl6405");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 147) MODULE_AUTHOR("Hartmut Hackmann & Oliver Endriss");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 148) MODULE_LICENSE("GPL");
Orange Pi5 kernel
Deprecated Linux kernel 5.10.110 for OrangePi 5/5B/5+ boards
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