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Diffstat (limited to 'drivers/media/tdmb/fc8050/fci_i2c.c')
-rw-r--r--drivers/media/tdmb/fc8050/fci_i2c.c263
1 files changed, 0 insertions, 263 deletions
diff --git a/drivers/media/tdmb/fc8050/fci_i2c.c b/drivers/media/tdmb/fc8050/fci_i2c.c
deleted file mode 100644
index 2cad84d..0000000
--- a/drivers/media/tdmb/fc8050/fci_i2c.c
+++ /dev/null
@@ -1,263 +0,0 @@
-/*****************************************************************************
- Copyright(c) 2009 FCI Inc. All Rights Reserved
-
- File name : fci_i2c.c
-
- Description : fci i2c driver
-
- 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
-
-
- History :
- ----------------------------------------------------------------------
- 2009/09/11 jason initial
-*******************************************************************************/
-
-#include <linux/input.h>
-
-
-#include "fci_types.h"
-#include "fci_oal.h"
-#include "fc8050_regs.h"
-#include "fci_hal.h"
-
-/* #define FEATURE_FCI_I2C_CHECK_STATUS */
-
-#define I2CSTAT_TIP 0x02 /* Tip bit */
-#define I2CSTAT_NACK 0x80 /* Nack bit */
-
-#define I2C_TIMEOUT 1 /* 1 second */
-
-#define I2C_CR_STA 0x80
-#define I2C_CR_STO 0x40
-#define I2C_CR_RD 0x20
-#define I2C_CR_WR 0x10
-#define I2C_CR_NACK 0x08
-#define I2C_CR_IACK 0x01
-
-#define I2C_WRITE 0
-#define I2C_READ 1
-
-#define I2C_OK 0
-#define I2C_NOK 1
-#define I2C_NACK 2
-#define I2C_NOK_LA 3 /* Lost arbitration */
-#define I2C_NOK_TOUT 4 /* time out */
-
-static int wait_for_xfer(HANDLE hDevice)
-{
- int i;
- int res = I2C_OK;
- u8 status;
-
- i = I2C_TIMEOUT * 10000;
- /* wait for transfer complete */
- do {
- bbm_read(hDevice, BBM_I2C_SR, &status);
- i--;
- } while ((i > 0) && (status & I2CSTAT_TIP));
-
- /* check time out or nack */
- if (status & I2CSTAT_TIP)
- res = I2C_NOK_TOUT;
-
-#ifdef FEATURE_FCI_I2C_CHECK_STATUS
- else {
- bbm_read(hDevice, BBM_I2C_SR, &status);
- if (status & I2CSTAT_NACK)
- res = I2C_NACK;
- else
- res = I2C_OK;
- }
-#endif
- return res;
-}
-
-static int fci_i2c_transfer(
- HANDLE hDevice, u8 cmd_type, u8 chip
- , u8 addr[], u8 addr_len, u8 data[], u8 data_len)
-{
- int i;
- int result = I2C_OK;
-
- switch (cmd_type) {
- case I2C_WRITE:
- bbm_write(hDevice, BBM_I2C_TXR, chip | cmd_type);
- bbm_write(hDevice, BBM_I2C_CR, I2C_CR_STA | I2C_CR_WR);
-#ifdef FEATURE_FCI_I2C_CHECK_STATUS
- result = wait_for_xfer(hDevice);
- if (result != I2C_OK)
- return result;
-#endif
- if (addr && addr_len) {
- i = 0;
- while ((i < addr_len) && (result == I2C_OK)) {
- bbm_write(hDevice, BBM_I2C_TXR, addr[i]);
- bbm_write(hDevice, BBM_I2C_CR, I2C_CR_WR);
-#ifdef FEATURE_FCI_I2C_CHECK_STATUS
- result = wait_for_xfer(hDevice);
- if (result != I2C_OK)
- return result;
-#endif
- i++;
- }
- }
-
- i = 0;
- while ((i < data_len) && (result == I2C_OK)) {
- bbm_write(hDevice, BBM_I2C_TXR, data[i]);
- bbm_write(hDevice, BBM_I2C_CR, I2C_CR_WR);
-#ifdef FEATURE_FCI_I2C_CHECK_STATUS
- result = wait_for_xfer(hDevice);
- if (result != I2C_OK)
- return result;
-#endif
- i++;
- }
-
- bbm_write(hDevice, BBM_I2C_CR, I2C_CR_STO);
-#ifdef FEATURE_FCI_I2C_CHECK_STATUS
- result = wait_for_xfer(hDevice);
- if (result != I2C_OK)
- return result;
-#endif
- break;
- case I2C_READ:
- if (addr && addr_len) {
- bbm_write(hDevice, BBM_I2C_TXR, chip | I2C_WRITE);
- bbm_write(hDevice, BBM_I2C_CR, I2C_CR_STA | I2C_CR_WR);
-#ifdef FEATURE_FCI_I2C_CHECK_STATUS
- result = wait_for_xfer(hDevice);
- if (result != I2C_OK)
- return result;
-#endif
-
- i = 0;
- while ((i < addr_len) && (result == I2C_OK)) {
- bbm_write(hDevice, BBM_I2C_TXR, addr[i]);
- bbm_write(hDevice, BBM_I2C_CR, I2C_CR_WR);
-#ifdef FEATURE_FCI_I2C_CHECK_STATUS
- result = wait_for_xfer(hDevice);
- if (result != I2C_OK)
- return result;
-#endif
- i++;
- }
- }
-
- bbm_write(hDevice, BBM_I2C_TXR, chip | I2C_READ);
- bbm_write(hDevice, BBM_I2C_CR, I2C_CR_STA | I2C_CR_WR);
-#ifdef FEATURE_FCI_I2C_CHECK_STATUS
- result = wait_for_xfer(hDevice);
- if (result != I2C_OK)
- return result;
-#endif
-
- i = 0;
- while ((i < data_len) && (result == I2C_OK)) {
- if (i == data_len - 1) {
- bbm_write(hDevice, BBM_I2C_CR
- , I2C_CR_RD|I2C_CR_NACK);
- result = wait_for_xfer(hDevice);
- if ((result != I2C_NACK)
- && (result != I2C_OK)) {
- print_log(hDevice, "NACK4-0[%02x]\n"
- , result);
- return result;
- }
- } else {
- bbm_write(hDevice, BBM_I2C_CR, I2C_CR_RD);
- result = wait_for_xfer(hDevice);
- if (result != I2C_OK) {
- print_log(hDevice, "NACK4-1[%02x]\n"
- , result);
- return result;
- }
- }
- bbm_read(hDevice, BBM_I2C_RXR, &data[i]);
- i++;
- }
-
- bbm_write(hDevice, BBM_I2C_CR, I2C_CR_STO);
-#ifdef FEATURE_FCI_I2C_CHECK_STATUS
- result = wait_for_xfer(hDevice);
- if ((result != I2C_NACK) && (result != I2C_OK)) {
- print_log(hDevice, "NACK5[%02X]\n", result);
- return result;
- }
-#endif
- break;
- default:
- return I2C_NOK;
- }
-
- return I2C_OK;
-}
-
-int fci_i2c_init(HANDLE hDevice, int speed, int slaveaddr)
-{
- u16 pr, rpr = 0;
-
- pr = (u16)((4800 / speed) - 1);
- /* pr=400; */
- bbm_word_write(hDevice, BBM_I2C_PR, pr);
-
- bbm_word_read(hDevice, BBM_I2C_PR, &rpr);
- if (pr != rpr)
- return BBM_NOK;
-
- /* i2c master core enable & interrupt enable */
- bbm_write(hDevice, BBM_I2C_CTR, 0xC0);
-
- return BBM_OK;
-}
-
-int fci_i2c_read(
- HANDLE hDevice, u8 chip, u8 addr, u8 address_len, u8 *data, u8 len)
-{
- int ret;
- u8 tmp[4] = {0xcc, 0xcc, 0xcc, 0xcc};
-
- ret = fci_i2c_transfer(hDevice, I2C_READ, chip << 1
- , &addr, address_len, &tmp[0], len);
- if (ret != I2C_OK) {
- print_log(hDevice
- , "fci_i2c_read() result=%d, addr = %x, data=%x\n"
- , ret, addr, *data);
- return ret;
- }
-
- /* *data = tmp[0]; */
- memcpy(data, tmp, len);
-
- return ret;
-}
-
-int fci_i2c_write(
- HANDLE hDevice, u8 chip, u8 addr, u8 address_len, u8 *data, u8 len)
-{
- int ret;
- u8 *paddr = &addr;
-
- ret = fci_i2c_transfer(hDevice, I2C_WRITE, chip << 1
- , paddr, address_len, data, len);
-
- if (ret != I2C_OK)
- print_log(hDevice
- , "fci_i2c_write() result=%d, addr= %x, data=%x\n"
- , ret, addr, *data);
-
- return ret;
-}
generated by cgit v1.1 at 2024-05-25 17:16:12 +0000