diff options
Diffstat (limited to 'drivers/staging/media/solo6x10/solo6x10-eeprom.c')
| -rw-r--r-- | drivers/staging/media/solo6x10/solo6x10-eeprom.c | 154 |
1 files changed, 0 insertions, 154 deletions
diff --git a/drivers/staging/media/solo6x10/solo6x10-eeprom.c b/drivers/staging/media/solo6x10/solo6x10-eeprom.c deleted file mode 100644 index 9d1c9bb53d6b..000000000000 --- a/drivers/staging/media/solo6x10/solo6x10-eeprom.c +++ /dev/null @@ -1,154 +0,0 @@ -/* - * Copyright (C) 2010-2013 Bluecherry, LLC <http://www.bluecherrydvr.com> - * - * Original author: - * Ben Collins <bcollins@ubuntu.com> - * - * Additional work by: - * John Brooks <john.brooks@bluecherry.net> - * - * 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., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. - */ - -#include <linux/kernel.h> -#include <linux/delay.h> - -#include "solo6x10.h" - -/* Control */ -#define EE_SHIFT_CLK 0x04 -#define EE_CS 0x08 -#define EE_DATA_WRITE 0x02 -#define EE_DATA_READ 0x01 -#define EE_ENB (0x80 | EE_CS) - -#define eeprom_delay() udelay(100) -#if 0 -#define eeprom_delay() solo_reg_read(solo_dev, SOLO_EEPROM_CTRL) -#define eeprom_delay() ({ \ - int i, ret; \ - udelay(100); \ - for (i = ret = 0; i < 1000 && !ret; i++) \ - ret = solo_eeprom_reg_read(solo_dev); \ -}) -#endif -#define ADDR_LEN 6 - -/* Commands */ -#define EE_EWEN_CMD 4 -#define EE_EWDS_CMD 4 -#define EE_WRITE_CMD 5 -#define EE_READ_CMD 6 -#define EE_ERASE_CMD 7 - -static unsigned int solo_eeprom_reg_read(struct solo_dev *solo_dev) -{ - return solo_reg_read(solo_dev, SOLO_EEPROM_CTRL) & EE_DATA_READ; -} - -static void solo_eeprom_reg_write(struct solo_dev *solo_dev, u32 data) -{ - solo_reg_write(solo_dev, SOLO_EEPROM_CTRL, data); - eeprom_delay(); -} - -static void solo_eeprom_cmd(struct solo_dev *solo_dev, int cmd) -{ - int i; - - solo_eeprom_reg_write(solo_dev, SOLO_EEPROM_ACCESS_EN); - solo_eeprom_reg_write(solo_dev, SOLO_EEPROM_ENABLE); - - for (i = 4 + ADDR_LEN; i >= 0; i--) { - int dataval = (cmd & (1 << i)) ? EE_DATA_WRITE : 0; - - solo_eeprom_reg_write(solo_dev, SOLO_EEPROM_ENABLE | dataval); - solo_eeprom_reg_write(solo_dev, SOLO_EEPROM_ENABLE | - EE_SHIFT_CLK | dataval); - } - - solo_eeprom_reg_write(solo_dev, SOLO_EEPROM_ENABLE); -} - -unsigned int solo_eeprom_ewen(struct solo_dev *solo_dev, int w_en) -{ - int ewen_cmd = (w_en ? 0x3f : 0) | (EE_EWEN_CMD << ADDR_LEN); - unsigned int retval = 0; - int i; - - solo_eeprom_cmd(solo_dev, ewen_cmd); - - for (i = 0; i < 16; i++) { - solo_eeprom_reg_write(solo_dev, SOLO_EEPROM_ENABLE | - EE_SHIFT_CLK); - retval = (retval << 1) | solo_eeprom_reg_read(solo_dev); - solo_eeprom_reg_write(solo_dev, SOLO_EEPROM_ENABLE); - retval = (retval << 1) | solo_eeprom_reg_read(solo_dev); - } - - solo_eeprom_reg_write(solo_dev, ~EE_CS); - retval = (retval << 1) | solo_eeprom_reg_read(solo_dev); - - return retval; -} - -unsigned short solo_eeprom_read(struct solo_dev *solo_dev, int loc) -{ - int read_cmd = loc | (EE_READ_CMD << ADDR_LEN); - unsigned short retval = 0; - int i; - - solo_eeprom_cmd(solo_dev, read_cmd); - - for (i = 0; i < 16; i++) { - solo_eeprom_reg_write(solo_dev, SOLO_EEPROM_ENABLE | - EE_SHIFT_CLK); - retval = (retval << 1) | solo_eeprom_reg_read(solo_dev); - solo_eeprom_reg_write(solo_dev, SOLO_EEPROM_ENABLE); - } - - solo_eeprom_reg_write(solo_dev, ~EE_CS); - - return retval; -} - -int solo_eeprom_write(struct solo_dev *solo_dev, int loc, - unsigned short data) -{ - int write_cmd = loc | (EE_WRITE_CMD << ADDR_LEN); - unsigned int retval; - int i; - - solo_eeprom_cmd(solo_dev, write_cmd); - - for (i = 15; i >= 0; i--) { - unsigned int dataval = (data >> i) & 1; - - solo_eeprom_reg_write(solo_dev, EE_ENB); - solo_eeprom_reg_write(solo_dev, - EE_ENB | (dataval << 1) | EE_SHIFT_CLK); - } - - solo_eeprom_reg_write(solo_dev, EE_ENB); - solo_eeprom_reg_write(solo_dev, ~EE_CS); - solo_eeprom_reg_write(solo_dev, EE_ENB); - - for (i = retval = 0; i < 10000 && !retval; i++) - retval = solo_eeprom_reg_read(solo_dev); - - solo_eeprom_reg_write(solo_dev, ~EE_CS); - - return !retval; -} |