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linux/drivers/media/usb/dvb-usb-v2/mxl111sf-gpio.c
Thomas Gleixner c942fddf87 treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 157 
Based on 3 normalized pattern(s):

  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

  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 [author] [kishon] [vijay] [abraham]
  [i] [kishon]@[ti] [com] 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

  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 [author] [graeme] [gregory]
  [gg]@[slimlogic] [co] [uk] [author] [kishon] [vijay] [abraham] [i]
  [kishon]@[ti] [com] [based] [on] [twl6030]_[usb] [c] [author] [hema]
  [hk] [hemahk]@[ti] [com] 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

extracted by the scancode license scanner the SPDX license identifier

  GPL-2.0-or-later

has been chosen to replace the boilerplate/reference in 1105 file(s).

Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Reviewed-by: Allison Randal <allison@lohutok.net>
Reviewed-by: Richard Fontana <rfontana@redhat.com>
Reviewed-by: Kate Stewart <kstewart@linuxfoundation.org>
Cc: linux-spdx@vger.kernel.org
Link: https://lkml.kernel.org/r/20190527070033.202006027@linutronix.de
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2019-05-30 11:26:37 -07:00

745 lines
19 KiB
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// SPDX-License-Identifier: GPL-2.0-or-later
/*
* mxl111sf-gpio.c - driver for the MaxLinear MXL111SF
*
* Copyright (C) 2010-2014 Michael Krufky <mkrufky@linuxtv.org>
*/
#include "mxl111sf-gpio.h"
#include "mxl111sf-i2c.h"
#include "mxl111sf.h"
/* ------------------------------------------------------------------------- */
#define MXL_GPIO_MUX_REG_0 0x84
#define MXL_GPIO_MUX_REG_1 0x89
#define MXL_GPIO_MUX_REG_2 0x82
#define MXL_GPIO_DIR_INPUT 0
#define MXL_GPIO_DIR_OUTPUT 1
static int mxl111sf_set_gpo_state(struct mxl111sf_state *state, u8 pin, u8 val)
{
int ret;
u8 tmp;
mxl_debug_adv("(%d, %d)", pin, val);
if ((pin > 0) && (pin < 8)) {
ret = mxl111sf_read_reg(state, 0x19, &tmp);
if (mxl_fail(ret))
goto fail;
tmp &= ~(1 << (pin - 1));
tmp |= (val << (pin - 1));
ret = mxl111sf_write_reg(state, 0x19, tmp);
if (mxl_fail(ret))
goto fail;
} else if (pin <= 10) {
if (pin == 0)
pin += 7;
ret = mxl111sf_read_reg(state, 0x30, &tmp);
if (mxl_fail(ret))
goto fail;
tmp &= ~(1 << (pin - 3));
tmp |= (val << (pin - 3));
ret = mxl111sf_write_reg(state, 0x30, tmp);
if (mxl_fail(ret))
goto fail;
} else
ret = -EINVAL;
fail:
return ret;
}
static int mxl111sf_get_gpi_state(struct mxl111sf_state *state, u8 pin, u8 *val)
{
int ret;
u8 tmp;
mxl_debug("(0x%02x)", pin);
*val = 0;
switch (pin) {
case 0:
case 1:
case 2:
case 3:
ret = mxl111sf_read_reg(state, 0x23, &tmp);
if (mxl_fail(ret))
goto fail;
*val = (tmp >> (pin + 4)) & 0x01;
break;
case 4:
case 5:
case 6:
case 7:
ret = mxl111sf_read_reg(state, 0x2f, &tmp);
if (mxl_fail(ret))
goto fail;
*val = (tmp >> pin) & 0x01;
break;
case 8:
case 9:
case 10:
ret = mxl111sf_read_reg(state, 0x22, &tmp);
if (mxl_fail(ret))
goto fail;
*val = (tmp >> (pin - 3)) & 0x01;
break;
default:
return -EINVAL; /* invalid pin */
}
fail:
return ret;
}
struct mxl_gpio_cfg {
u8 pin;
u8 dir;
u8 val;
};
static int mxl111sf_config_gpio_pins(struct mxl111sf_state *state,
struct mxl_gpio_cfg *gpio_cfg)
{
int ret;
u8 tmp;
mxl_debug_adv("(%d, %d)", gpio_cfg->pin, gpio_cfg->dir);
switch (gpio_cfg->pin) {
case 0:
case 1:
case 2:
case 3:
ret = mxl111sf_read_reg(state, MXL_GPIO_MUX_REG_0, &tmp);
if (mxl_fail(ret))
goto fail;
tmp &= ~(1 << (gpio_cfg->pin + 4));
tmp |= (gpio_cfg->dir << (gpio_cfg->pin + 4));
ret = mxl111sf_write_reg(state, MXL_GPIO_MUX_REG_0, tmp);
if (mxl_fail(ret))
goto fail;
break;
case 4:
case 5:
case 6:
case 7:
ret = mxl111sf_read_reg(state, MXL_GPIO_MUX_REG_1, &tmp);
if (mxl_fail(ret))
goto fail;
tmp &= ~(1 << gpio_cfg->pin);
tmp |= (gpio_cfg->dir << gpio_cfg->pin);
ret = mxl111sf_write_reg(state, MXL_GPIO_MUX_REG_1, tmp);
if (mxl_fail(ret))
goto fail;
break;
case 8:
case 9:
case 10:
ret = mxl111sf_read_reg(state, MXL_GPIO_MUX_REG_2, &tmp);
if (mxl_fail(ret))
goto fail;
tmp &= ~(1 << (gpio_cfg->pin - 3));
tmp |= (gpio_cfg->dir << (gpio_cfg->pin - 3));
ret = mxl111sf_write_reg(state, MXL_GPIO_MUX_REG_2, tmp);
if (mxl_fail(ret))
goto fail;
break;
default:
return -EINVAL; /* invalid pin */
}
ret = (MXL_GPIO_DIR_OUTPUT == gpio_cfg->dir) ?
mxl111sf_set_gpo_state(state,
gpio_cfg->pin, gpio_cfg->val) :
mxl111sf_get_gpi_state(state,
gpio_cfg->pin, &gpio_cfg->val);
mxl_fail(ret);
fail:
return ret;
}
static int mxl111sf_hw_do_set_gpio(struct mxl111sf_state *state,
int gpio, int direction, int val)
{
struct mxl_gpio_cfg gpio_config = {
.pin = gpio,
.dir = direction,
.val = val,
};
mxl_debug("(%d, %d, %d)", gpio, direction, val);
return mxl111sf_config_gpio_pins(state, &gpio_config);
}
/* ------------------------------------------------------------------------- */
#define PIN_MUX_MPEG_MODE_MASK 0x40 /* 0x17 <6> */
#define PIN_MUX_MPEG_PAR_EN_MASK 0x01 /* 0x18 <0> */
#define PIN_MUX_MPEG_SER_EN_MASK 0x02 /* 0x18 <1> */
#define PIN_MUX_MPG_IN_MUX_MASK 0x80 /* 0x3D <7> */
#define PIN_MUX_BT656_ENABLE_MASK 0x04 /* 0x12 <2> */
#define PIN_MUX_I2S_ENABLE_MASK 0x40 /* 0x15 <6> */
#define PIN_MUX_SPI_MODE_MASK 0x10 /* 0x3D <4> */
#define PIN_MUX_MCLK_EN_CTRL_MASK 0x10 /* 0x82 <4> */
#define PIN_MUX_MPSYN_EN_CTRL_MASK 0x20 /* 0x82 <5> */
#define PIN_MUX_MDVAL_EN_CTRL_MASK 0x40 /* 0x82 <6> */
#define PIN_MUX_MPERR_EN_CTRL_MASK 0x80 /* 0x82 <7> */
#define PIN_MUX_MDAT_EN_0_MASK 0x10 /* 0x84 <4> */
#define PIN_MUX_MDAT_EN_1_MASK 0x20 /* 0x84 <5> */
#define PIN_MUX_MDAT_EN_2_MASK 0x40 /* 0x84 <6> */
#define PIN_MUX_MDAT_EN_3_MASK 0x80 /* 0x84 <7> */
#define PIN_MUX_MDAT_EN_4_MASK 0x10 /* 0x89 <4> */
#define PIN_MUX_MDAT_EN_5_MASK 0x20 /* 0x89 <5> */
#define PIN_MUX_MDAT_EN_6_MASK 0x40 /* 0x89 <6> */
#define PIN_MUX_MDAT_EN_7_MASK 0x80 /* 0x89 <7> */
int mxl111sf_config_pin_mux_modes(struct mxl111sf_state *state,
enum mxl111sf_mux_config pin_mux_config)
{
u8 r12, r15, r17, r18, r3D, r82, r84, r89;
int ret;
mxl_debug("(%d)", pin_mux_config);
ret = mxl111sf_read_reg(state, 0x17, &r17);
if (mxl_fail(ret))
goto fail;
ret = mxl111sf_read_reg(state, 0x18, &r18);
if (mxl_fail(ret))
goto fail;
ret = mxl111sf_read_reg(state, 0x12, &r12);
if (mxl_fail(ret))
goto fail;
ret = mxl111sf_read_reg(state, 0x15, &r15);
if (mxl_fail(ret))
goto fail;
ret = mxl111sf_read_reg(state, 0x82, &r82);
if (mxl_fail(ret))
goto fail;
ret = mxl111sf_read_reg(state, 0x84, &r84);
if (mxl_fail(ret))
goto fail;
ret = mxl111sf_read_reg(state, 0x89, &r89);
if (mxl_fail(ret))
goto fail;
ret = mxl111sf_read_reg(state, 0x3D, &r3D);
if (mxl_fail(ret))
goto fail;
switch (pin_mux_config) {
case PIN_MUX_TS_OUT_PARALLEL:
/* mpeg_mode = 1 */
r17 |= PIN_MUX_MPEG_MODE_MASK;
/* mpeg_par_en = 1 */
r18 |= PIN_MUX_MPEG_PAR_EN_MASK;
/* mpeg_ser_en = 0 */
r18 &= ~PIN_MUX_MPEG_SER_EN_MASK;
/* mpg_in_mux = 0 */
r3D &= ~PIN_MUX_MPG_IN_MUX_MASK;
/* bt656_enable = 0 */
r12 &= ~PIN_MUX_BT656_ENABLE_MASK;
/* i2s_enable = 0 */
r15 &= ~PIN_MUX_I2S_ENABLE_MASK;
/* spi_mode = 0 */
r3D &= ~PIN_MUX_SPI_MODE_MASK;
/* mclk_en_ctrl = 1 */
r82 |= PIN_MUX_MCLK_EN_CTRL_MASK;
/* mperr_en_ctrl = 1 */
r82 |= PIN_MUX_MPERR_EN_CTRL_MASK;
/* mdval_en_ctrl = 1 */
r82 |= PIN_MUX_MDVAL_EN_CTRL_MASK;
/* mpsyn_en_ctrl = 1 */
r82 |= PIN_MUX_MPSYN_EN_CTRL_MASK;
/* mdat_en_ctrl[3:0] = 0xF */
r84 |= 0xF0;
/* mdat_en_ctrl[7:4] = 0xF */
r89 |= 0xF0;
break;
case PIN_MUX_TS_OUT_SERIAL:
/* mpeg_mode = 1 */
r17 |= PIN_MUX_MPEG_MODE_MASK;
/* mpeg_par_en = 0 */
r18 &= ~PIN_MUX_MPEG_PAR_EN_MASK;
/* mpeg_ser_en = 1 */
r18 |= PIN_MUX_MPEG_SER_EN_MASK;
/* mpg_in_mux = 0 */
r3D &= ~PIN_MUX_MPG_IN_MUX_MASK;
/* bt656_enable = 0 */
r12 &= ~PIN_MUX_BT656_ENABLE_MASK;
/* i2s_enable = 0 */
r15 &= ~PIN_MUX_I2S_ENABLE_MASK;
/* spi_mode = 0 */
r3D &= ~PIN_MUX_SPI_MODE_MASK;
/* mclk_en_ctrl = 1 */
r82 |= PIN_MUX_MCLK_EN_CTRL_MASK;
/* mperr_en_ctrl = 1 */
r82 |= PIN_MUX_MPERR_EN_CTRL_MASK;
/* mdval_en_ctrl = 1 */
r82 |= PIN_MUX_MDVAL_EN_CTRL_MASK;
/* mpsyn_en_ctrl = 1 */
r82 |= PIN_MUX_MPSYN_EN_CTRL_MASK;
/* mdat_en_ctrl[3:0] = 0xF */
r84 |= 0xF0;
/* mdat_en_ctrl[7:4] = 0xF */
r89 |= 0xF0;
break;
case PIN_MUX_GPIO_MODE:
/* mpeg_mode = 0 */
r17 &= ~PIN_MUX_MPEG_MODE_MASK;
/* mpeg_par_en = 0 */
r18 &= ~PIN_MUX_MPEG_PAR_EN_MASK;
/* mpeg_ser_en = 0 */
r18 &= ~PIN_MUX_MPEG_SER_EN_MASK;
/* mpg_in_mux = 0 */
r3D &= ~PIN_MUX_MPG_IN_MUX_MASK;
/* bt656_enable = 0 */
r12 &= ~PIN_MUX_BT656_ENABLE_MASK;
/* i2s_enable = 0 */
r15 &= ~PIN_MUX_I2S_ENABLE_MASK;
/* spi_mode = 0 */
r3D &= ~PIN_MUX_SPI_MODE_MASK;
/* mclk_en_ctrl = 0 */
r82 &= ~PIN_MUX_MCLK_EN_CTRL_MASK;
/* mperr_en_ctrl = 0 */
r82 &= ~PIN_MUX_MPERR_EN_CTRL_MASK;
/* mdval_en_ctrl = 0 */
r82 &= ~PIN_MUX_MDVAL_EN_CTRL_MASK;
/* mpsyn_en_ctrl = 0 */
r82 &= ~PIN_MUX_MPSYN_EN_CTRL_MASK;
/* mdat_en_ctrl[3:0] = 0x0 */
r84 &= 0x0F;
/* mdat_en_ctrl[7:4] = 0x0 */
r89 &= 0x0F;
break;
case PIN_MUX_TS_SERIAL_IN_MODE_0:
/* mpeg_mode = 0 */
r17 &= ~PIN_MUX_MPEG_MODE_MASK;
/* mpeg_par_en = 0 */
r18 &= ~PIN_MUX_MPEG_PAR_EN_MASK;
/* mpeg_ser_en = 1 */
r18 |= PIN_MUX_MPEG_SER_EN_MASK;
/* mpg_in_mux = 0 */
r3D &= ~PIN_MUX_MPG_IN_MUX_MASK;
/* bt656_enable = 0 */
r12 &= ~PIN_MUX_BT656_ENABLE_MASK;
/* i2s_enable = 0 */
r15 &= ~PIN_MUX_I2S_ENABLE_MASK;
/* spi_mode = 0 */
r3D &= ~PIN_MUX_SPI_MODE_MASK;
/* mclk_en_ctrl = 0 */
r82 &= ~PIN_MUX_MCLK_EN_CTRL_MASK;
/* mperr_en_ctrl = 0 */
r82 &= ~PIN_MUX_MPERR_EN_CTRL_MASK;
/* mdval_en_ctrl = 0 */
r82 &= ~PIN_MUX_MDVAL_EN_CTRL_MASK;
/* mpsyn_en_ctrl = 0 */
r82 &= ~PIN_MUX_MPSYN_EN_CTRL_MASK;
/* mdat_en_ctrl[3:0] = 0x0 */
r84 &= 0x0F;
/* mdat_en_ctrl[7:4] = 0x0 */
r89 &= 0x0F;
break;
case PIN_MUX_TS_SERIAL_IN_MODE_1:
/* mpeg_mode = 0 */
r17 &= ~PIN_MUX_MPEG_MODE_MASK;
/* mpeg_par_en = 0 */
r18 &= ~PIN_MUX_MPEG_PAR_EN_MASK;
/* mpeg_ser_en = 1 */
r18 |= PIN_MUX_MPEG_SER_EN_MASK;
/* mpg_in_mux = 1 */
r3D |= PIN_MUX_MPG_IN_MUX_MASK;
/* bt656_enable = 0 */
r12 &= ~PIN_MUX_BT656_ENABLE_MASK;
/* i2s_enable = 0 */
r15 &= ~PIN_MUX_I2S_ENABLE_MASK;
/* spi_mode = 0 */
r3D &= ~PIN_MUX_SPI_MODE_MASK;
/* mclk_en_ctrl = 0 */
r82 &= ~PIN_MUX_MCLK_EN_CTRL_MASK;
/* mperr_en_ctrl = 0 */
r82 &= ~PIN_MUX_MPERR_EN_CTRL_MASK;
/* mdval_en_ctrl = 0 */
r82 &= ~PIN_MUX_MDVAL_EN_CTRL_MASK;
/* mpsyn_en_ctrl = 0 */
r82 &= ~PIN_MUX_MPSYN_EN_CTRL_MASK;
/* mdat_en_ctrl[3:0] = 0x0 */
r84 &= 0x0F;
/* mdat_en_ctrl[7:4] = 0x0 */
r89 &= 0x0F;
break;
case PIN_MUX_TS_SPI_IN_MODE_1:
/* mpeg_mode = 0 */
r17 &= ~PIN_MUX_MPEG_MODE_MASK;
/* mpeg_par_en = 0 */
r18 &= ~PIN_MUX_MPEG_PAR_EN_MASK;
/* mpeg_ser_en = 1 */
r18 |= PIN_MUX_MPEG_SER_EN_MASK;
/* mpg_in_mux = 1 */
r3D |= PIN_MUX_MPG_IN_MUX_MASK;
/* bt656_enable = 0 */
r12 &= ~PIN_MUX_BT656_ENABLE_MASK;
/* i2s_enable = 1 */
r15 |= PIN_MUX_I2S_ENABLE_MASK;
/* spi_mode = 1 */
r3D |= PIN_MUX_SPI_MODE_MASK;
/* mclk_en_ctrl = 0 */
r82 &= ~PIN_MUX_MCLK_EN_CTRL_MASK;
/* mperr_en_ctrl = 0 */
r82 &= ~PIN_MUX_MPERR_EN_CTRL_MASK;
/* mdval_en_ctrl = 0 */
r82 &= ~PIN_MUX_MDVAL_EN_CTRL_MASK;
/* mpsyn_en_ctrl = 0 */
r82 &= ~PIN_MUX_MPSYN_EN_CTRL_MASK;
/* mdat_en_ctrl[3:0] = 0x0 */
r84 &= 0x0F;
/* mdat_en_ctrl[7:4] = 0x0 */
r89 &= 0x0F;
break;
case PIN_MUX_TS_SPI_IN_MODE_0:
/* mpeg_mode = 0 */
r17 &= ~PIN_MUX_MPEG_MODE_MASK;
/* mpeg_par_en = 0 */
r18 &= ~PIN_MUX_MPEG_PAR_EN_MASK;
/* mpeg_ser_en = 1 */
r18 |= PIN_MUX_MPEG_SER_EN_MASK;
/* mpg_in_mux = 0 */
r3D &= ~PIN_MUX_MPG_IN_MUX_MASK;
/* bt656_enable = 0 */
r12 &= ~PIN_MUX_BT656_ENABLE_MASK;
/* i2s_enable = 1 */
r15 |= PIN_MUX_I2S_ENABLE_MASK;
/* spi_mode = 1 */
r3D |= PIN_MUX_SPI_MODE_MASK;
/* mclk_en_ctrl = 0 */
r82 &= ~PIN_MUX_MCLK_EN_CTRL_MASK;
/* mperr_en_ctrl = 0 */
r82 &= ~PIN_MUX_MPERR_EN_CTRL_MASK;
/* mdval_en_ctrl = 0 */
r82 &= ~PIN_MUX_MDVAL_EN_CTRL_MASK;
/* mpsyn_en_ctrl = 0 */
r82 &= ~PIN_MUX_MPSYN_EN_CTRL_MASK;
/* mdat_en_ctrl[3:0] = 0x0 */
r84 &= 0x0F;
/* mdat_en_ctrl[7:4] = 0x0 */
r89 &= 0x0F;
break;
case PIN_MUX_TS_PARALLEL_IN:
/* mpeg_mode = 0 */
r17 &= ~PIN_MUX_MPEG_MODE_MASK;
/* mpeg_par_en = 1 */
r18 |= PIN_MUX_MPEG_PAR_EN_MASK;
/* mpeg_ser_en = 0 */
r18 &= ~PIN_MUX_MPEG_SER_EN_MASK;
/* mpg_in_mux = 0 */
r3D &= ~PIN_MUX_MPG_IN_MUX_MASK;
/* bt656_enable = 0 */
r12 &= ~PIN_MUX_BT656_ENABLE_MASK;
/* i2s_enable = 0 */
r15 &= ~PIN_MUX_I2S_ENABLE_MASK;
/* spi_mode = 0 */
r3D &= ~PIN_MUX_SPI_MODE_MASK;
/* mclk_en_ctrl = 0 */
r82 &= ~PIN_MUX_MCLK_EN_CTRL_MASK;
/* mperr_en_ctrl = 0 */
r82 &= ~PIN_MUX_MPERR_EN_CTRL_MASK;
/* mdval_en_ctrl = 0 */
r82 &= ~PIN_MUX_MDVAL_EN_CTRL_MASK;
/* mpsyn_en_ctrl = 0 */
r82 &= ~PIN_MUX_MPSYN_EN_CTRL_MASK;
/* mdat_en_ctrl[3:0] = 0x0 */
r84 &= 0x0F;
/* mdat_en_ctrl[7:4] = 0x0 */
r89 &= 0x0F;
break;
case PIN_MUX_BT656_I2S_MODE:
/* mpeg_mode = 0 */
r17 &= ~PIN_MUX_MPEG_MODE_MASK;
/* mpeg_par_en = 0 */
r18 &= ~PIN_MUX_MPEG_PAR_EN_MASK;
/* mpeg_ser_en = 0 */
r18 &= ~PIN_MUX_MPEG_SER_EN_MASK;
/* mpg_in_mux = 0 */
r3D &= ~PIN_MUX_MPG_IN_MUX_MASK;
/* bt656_enable = 1 */
r12 |= PIN_MUX_BT656_ENABLE_MASK;
/* i2s_enable = 1 */
r15 |= PIN_MUX_I2S_ENABLE_MASK;
/* spi_mode = 0 */
r3D &= ~PIN_MUX_SPI_MODE_MASK;
/* mclk_en_ctrl = 0 */
r82 &= ~PIN_MUX_MCLK_EN_CTRL_MASK;
/* mperr_en_ctrl = 0 */
r82 &= ~PIN_MUX_MPERR_EN_CTRL_MASK;
/* mdval_en_ctrl = 0 */
r82 &= ~PIN_MUX_MDVAL_EN_CTRL_MASK;
/* mpsyn_en_ctrl = 0 */
r82 &= ~PIN_MUX_MPSYN_EN_CTRL_MASK;
/* mdat_en_ctrl[3:0] = 0x0 */
r84 &= 0x0F;
/* mdat_en_ctrl[7:4] = 0x0 */
r89 &= 0x0F;
break;
case PIN_MUX_DEFAULT:
default:
/* mpeg_mode = 1 */
r17 |= PIN_MUX_MPEG_MODE_MASK;
/* mpeg_par_en = 0 */
r18 &= ~PIN_MUX_MPEG_PAR_EN_MASK;
/* mpeg_ser_en = 0 */
r18 &= ~PIN_MUX_MPEG_SER_EN_MASK;
/* mpg_in_mux = 0 */
r3D &= ~PIN_MUX_MPG_IN_MUX_MASK;
/* bt656_enable = 0 */
r12 &= ~PIN_MUX_BT656_ENABLE_MASK;
/* i2s_enable = 0 */
r15 &= ~PIN_MUX_I2S_ENABLE_MASK;
/* spi_mode = 0 */
r3D &= ~PIN_MUX_SPI_MODE_MASK;
/* mclk_en_ctrl = 0 */
r82 &= ~PIN_MUX_MCLK_EN_CTRL_MASK;
/* mperr_en_ctrl = 0 */
r82 &= ~PIN_MUX_MPERR_EN_CTRL_MASK;
/* mdval_en_ctrl = 0 */
r82 &= ~PIN_MUX_MDVAL_EN_CTRL_MASK;
/* mpsyn_en_ctrl = 0 */
r82 &= ~PIN_MUX_MPSYN_EN_CTRL_MASK;
/* mdat_en_ctrl[3:0] = 0x0 */
r84 &= 0x0F;
/* mdat_en_ctrl[7:4] = 0x0 */
r89 &= 0x0F;
break;
}
ret = mxl111sf_write_reg(state, 0x17, r17);
if (mxl_fail(ret))
goto fail;
ret = mxl111sf_write_reg(state, 0x18, r18);
if (mxl_fail(ret))
goto fail;
ret = mxl111sf_write_reg(state, 0x12, r12);
if (mxl_fail(ret))
goto fail;
ret = mxl111sf_write_reg(state, 0x15, r15);
if (mxl_fail(ret))
goto fail;
ret = mxl111sf_write_reg(state, 0x82, r82);
if (mxl_fail(ret))
goto fail;
ret = mxl111sf_write_reg(state, 0x84, r84);
if (mxl_fail(ret))
goto fail;
ret = mxl111sf_write_reg(state, 0x89, r89);
if (mxl_fail(ret))
goto fail;
ret = mxl111sf_write_reg(state, 0x3D, r3D);
if (mxl_fail(ret))
goto fail;
fail:
return ret;
}
/* ------------------------------------------------------------------------- */
static int mxl111sf_hw_set_gpio(struct mxl111sf_state *state, int gpio, int val)
{
return mxl111sf_hw_do_set_gpio(state, gpio, MXL_GPIO_DIR_OUTPUT, val);
}
static int mxl111sf_hw_gpio_initialize(struct mxl111sf_state *state)
{
u8 gpioval = 0x07; /* write protect enabled, signal LEDs off */
int i, ret;
mxl_debug("()");
for (i = 3; i < 8; i++) {
ret = mxl111sf_hw_set_gpio(state, i, (gpioval >> i) & 0x01);
if (mxl_fail(ret))
break;
}
return ret;
}
#define PCA9534_I2C_ADDR (0x40 >> 1)
static int pca9534_set_gpio(struct mxl111sf_state *state, int gpio, int val)
{
u8 w[2] = { 1, 0 };
u8 r = 0;
struct i2c_msg msg[] = {
{ .addr = PCA9534_I2C_ADDR,
.flags = 0, .buf = w, .len = 1 },
{ .addr = PCA9534_I2C_ADDR,
.flags = I2C_M_RD, .buf = &r, .len = 1 },
};
mxl_debug("(%d, %d)", gpio, val);
/* read current GPIO levels from flip-flop */
i2c_transfer(&state->d->i2c_adap, msg, 2);
/* prepare write buffer with current GPIO levels */
msg[0].len = 2;
#if 0
w[0] = 1;
#endif
w[1] = r;
/* clear the desired GPIO */
w[1] &= ~(1 << gpio);
/* set the desired GPIO value */
w[1] |= ((val ? 1 : 0) << gpio);
/* write new GPIO levels to flip-flop */
i2c_transfer(&state->d->i2c_adap, &msg[0], 1);
return 0;
}
static int pca9534_init_port_expander(struct mxl111sf_state *state)
{
u8 w[2] = { 1, 0x07 }; /* write protect enabled, signal LEDs off */
struct i2c_msg msg = {
.addr = PCA9534_I2C_ADDR,
.flags = 0, .buf = w, .len = 2
};
mxl_debug("()");
i2c_transfer(&state->d->i2c_adap, &msg, 1);
/* configure all pins as outputs */
w[0] = 3;
w[1] = 0;
i2c_transfer(&state->d->i2c_adap, &msg, 1);
return 0;
}
int mxl111sf_set_gpio(struct mxl111sf_state *state, int gpio, int val)
{
mxl_debug("(%d, %d)", gpio, val);
switch (state->gpio_port_expander) {
default:
mxl_printk(KERN_ERR,
"gpio_port_expander undefined, assuming PCA9534");
/* fall-thru */
case mxl111sf_PCA9534:
return pca9534_set_gpio(state, gpio, val);
case mxl111sf_gpio_hw:
return mxl111sf_hw_set_gpio(state, gpio, val);
}
}
static int mxl111sf_probe_port_expander(struct mxl111sf_state *state)
{
int ret;
u8 w = 1;
u8 r = 0;
struct i2c_msg msg[] = {
{ .flags = 0, .buf = &w, .len = 1 },
{ .flags = I2C_M_RD, .buf = &r, .len = 1 },
};
mxl_debug("()");
msg[0].addr = 0x70 >> 1;
msg[1].addr = 0x70 >> 1;
/* read current GPIO levels from flip-flop */
ret = i2c_transfer(&state->d->i2c_adap, msg, 2);
if (ret == 2) {
state->port_expander_addr = msg[0].addr;
state->gpio_port_expander = mxl111sf_PCA9534;
mxl_debug("found port expander at 0x%02x",
state->port_expander_addr);
return 0;
}
msg[0].addr = 0x40 >> 1;
msg[1].addr = 0x40 >> 1;
ret = i2c_transfer(&state->d->i2c_adap, msg, 2);
if (ret == 2) {
state->port_expander_addr = msg[0].addr;
state->gpio_port_expander = mxl111sf_PCA9534;
mxl_debug("found port expander at 0x%02x",
state->port_expander_addr);
return 0;
}
state->port_expander_addr = 0xff;
state->gpio_port_expander = mxl111sf_gpio_hw;
mxl_debug("using hardware gpio");
return 0;
}
int mxl111sf_init_port_expander(struct mxl111sf_state *state)
{
mxl_debug("()");
if (0x00 == state->port_expander_addr)
mxl111sf_probe_port_expander(state);
switch (state->gpio_port_expander) {
default:
mxl_printk(KERN_ERR,
"gpio_port_expander undefined, assuming PCA9534");
/* fall-thru */
case mxl111sf_PCA9534:
return pca9534_init_port_expander(state);
case mxl111sf_gpio_hw:
return mxl111sf_hw_gpio_initialize(state);
}
}
/* ------------------------------------------------------------------------ */
int mxl111sf_gpio_mode_switch(struct mxl111sf_state *state, unsigned int mode)
{
/* GPO:
* 3 - ATSC/MH# | 1 = ATSC transport, 0 = MH transport | default 0
* 4 - ATSC_RST## | 1 = ATSC enable, 0 = ATSC Reset | default 0
* 5 - ATSC_EN | 1 = ATSC power enable, 0 = ATSC power off | default 0
* 6 - MH_RESET# | 1 = MH enable, 0 = MH Reset | default 0
* 7 - MH_EN | 1 = MH power enable, 0 = MH power off | default 0
*/
mxl_debug("(%d)", mode);
switch (mode) {
case MXL111SF_GPIO_MOD_MH:
mxl111sf_set_gpio(state, 4, 0);
mxl111sf_set_gpio(state, 5, 0);
msleep(50);
mxl111sf_set_gpio(state, 7, 1);
msleep(50);
mxl111sf_set_gpio(state, 6, 1);
msleep(50);
mxl111sf_set_gpio(state, 3, 0);
break;
case MXL111SF_GPIO_MOD_ATSC:
mxl111sf_set_gpio(state, 6, 0);
mxl111sf_set_gpio(state, 7, 0);
msleep(50);
mxl111sf_set_gpio(state, 5, 1);
msleep(50);
mxl111sf_set_gpio(state, 4, 1);
msleep(50);
mxl111sf_set_gpio(state, 3, 1);
break;
default: /* DVBT / STANDBY */
mxl111sf_init_port_expander(state);
break;
}
return 0;
}
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