From d70c79fa89db69ea1b3b910b75be9d5c0af4f99d Mon Sep 17 00:00:00 2001 From: Tuomas Tynkkynen Date: Wed, 9 May 2018 15:24:34 +0300 Subject: i2c: Drop CONFIG_TSI108_I2C Last user of this driver went away in June 2015 in commit d928664f4101e24 ("powerpc: 74xx_7xx: remove 74xx_7xx cpu support") Signed-off-by: Tuomas Tynkkynen Acked-by: Heiko Schocher --- drivers/i2c/Makefile | 1 - drivers/i2c/tsi108_i2c.c | 275 ----------------------------------------------- 2 files changed, 276 deletions(-) delete mode 100644 drivers/i2c/tsi108_i2c.c (limited to 'drivers') diff --git a/drivers/i2c/Makefile b/drivers/i2c/Makefile index 8bb3c18b572..4cf5c51773b 100644 --- a/drivers/i2c/Makefile +++ b/drivers/i2c/Makefile @@ -9,7 +9,6 @@ obj-$(CONFIG_$(SPL_)I2C_CROS_EC_TUNNEL) += cros_ec_tunnel.o obj-$(CONFIG_$(SPL_)I2C_CROS_EC_LDO) += cros_ec_ldo.o obj-$(CONFIG_I2C_MV) += mv_i2c.o -obj-$(CONFIG_TSI108_I2C) += tsi108_i2c.o obj-$(CONFIG_SH_SH7734_I2C) += sh_sh7734_i2c.o obj-$(CONFIG_SYS_I2C) += i2c_core.o obj-$(CONFIG_SYS_I2C_ASPEED) += ast_i2c.o diff --git a/drivers/i2c/tsi108_i2c.c b/drivers/i2c/tsi108_i2c.c deleted file mode 100644 index 208c0900ef8..00000000000 --- a/drivers/i2c/tsi108_i2c.c +++ /dev/null @@ -1,275 +0,0 @@ -// SPDX-License-Identifier: GPL-2.0+ -/* - * (C) Copyright 2004 Tundra Semiconductor Corp. - * Author: Alex Bounine - * - * NOTE: This driver should be converted to driver model before June 2017. - * Please see doc/driver-model/i2c-howto.txt for instructions. - */ - -#include -#include - -#include - -#if defined(CONFIG_CMD_I2C) - -#define I2C_DELAY 100000 -#undef DEBUG_I2C - -#ifdef DEBUG_I2C -#define DPRINT(x) printf (x) -#else -#define DPRINT(x) -#endif - -/* All functions assume that Tsi108 I2C block is the only master on the bus */ -/* I2C read helper function */ - -void i2c_init(int speed, int slaveaddr) -{ - /* - * The TSI108 has a fixed I2C clock rate and doesn't support slave - * operation. This function only exists as a stub to fit into the - * U-Boot I2C API. - */ -} - -static int i2c_read_byte ( - uint i2c_chan, /* I2C channel number: 0 - main, 1 - SDC SPD */ - uchar chip_addr,/* I2C device address on the bus */ - uint byte_addr, /* Byte address within I2C device */ - uchar * buffer /* pointer to data buffer */ - ) -{ - u32 temp; - u32 to_count = I2C_DELAY; - u32 op_status = TSI108_I2C_TIMEOUT_ERR; - u32 chan_offset = TSI108_I2C_OFFSET; - - DPRINT (("I2C read_byte() %d 0x%02x 0x%02x\n", - i2c_chan, chip_addr, byte_addr)); - - if (0 != i2c_chan) - chan_offset = TSI108_I2C_SDRAM_OFFSET; - - /* Check if I2C operation is in progress */ - temp = *(u32 *) (CONFIG_SYS_TSI108_CSR_BASE + chan_offset + I2C_CNTRL2); - - if (0 == (temp & (I2C_CNTRL2_RD_STATUS | I2C_CNTRL2_WR_STATUS | - I2C_CNTRL2_START))) { - /* Set device address and operation (read = 0) */ - temp = (byte_addr << 16) | ((chip_addr & 0x07) << 8) | - ((chip_addr >> 3) & 0x0F); - *(u32 *) (CONFIG_SYS_TSI108_CSR_BASE + chan_offset + I2C_CNTRL1) = - temp; - - /* Issue the read command - * (at this moment all other parameters are 0 - * (size = 1 byte, lane = 0) - */ - - *(u32 *) (CONFIG_SYS_TSI108_CSR_BASE + chan_offset + I2C_CNTRL2) = - (I2C_CNTRL2_START); - - /* Wait until operation completed */ - do { - /* Read I2C operation status */ - temp = *(u32 *) (CONFIG_SYS_TSI108_CSR_BASE + chan_offset + I2C_CNTRL2); - - if (0 == (temp & (I2C_CNTRL2_RD_STATUS | I2C_CNTRL2_START))) { - if (0 == (temp & - (I2C_CNTRL2_I2C_CFGERR | - I2C_CNTRL2_I2C_TO_ERR)) - ) { - op_status = TSI108_I2C_SUCCESS; - - temp = *(u32 *) (CONFIG_SYS_TSI108_CSR_BASE + - chan_offset + - I2C_RD_DATA); - - *buffer = (u8) (temp & 0xFF); - } else { - /* report HW error */ - op_status = TSI108_I2C_IF_ERROR; - - DPRINT (("I2C HW error reported: 0x%02x\n", temp)); - } - - break; - } - } while (to_count--); - } else { - op_status = TSI108_I2C_IF_BUSY; - - DPRINT (("I2C Transaction start failed: 0x%02x\n", temp)); - } - - DPRINT (("I2C read_byte() status: 0x%02x\n", op_status)); - return op_status; -} - -/* - * I2C Read interface as defined in "include/i2c.h" : - * chip_addr: I2C chip address, range 0..127 - * (to read from SPD channel EEPROM use (0xD0 ... 0xD7) - * NOTE: The bit 7 in the chip_addr serves as a channel select. - * This hack is for enabling "i2c sdram" command on Tsi108 boards - * without changes to common code. Used for I2C reads only. - * byte_addr: Memory or register address within the chip - * alen: Number of bytes to use for addr (typically 1, 2 for larger - * memories, 0 for register type devices with only one - * register) - * buffer: Pointer to destination buffer for data to be read - * len: How many bytes to read - * - * Returns: 0 on success, not 0 on failure - */ - -int i2c_read (uchar chip_addr, uint byte_addr, int alen, - uchar * buffer, int len) -{ - u32 op_status = TSI108_I2C_PARAM_ERR; - u32 i2c_if = 0; - - /* Hack to support second (SPD) I2C controller (SPD EEPROM read only).*/ - if (0xD0 == (chip_addr & ~0x07)) { - i2c_if = 1; - chip_addr &= 0x7F; - } - /* Check for valid I2C address */ - if (chip_addr <= 0x7F && (byte_addr + len) <= (0x01 << (alen * 8))) { - while (len--) { - op_status = i2c_read_byte(i2c_if, chip_addr, byte_addr++, buffer++); - - if (TSI108_I2C_SUCCESS != op_status) { - DPRINT (("I2C read_byte() failed: 0x%02x (%d left)\n", op_status, len)); - - break; - } - } - } - - DPRINT (("I2C read() status: 0x%02x\n", op_status)); - return op_status; -} - -/* I2C write helper function */ - -static int i2c_write_byte (uchar chip_addr,/* I2C device address on the bus */ - uint byte_addr, /* Byte address within I2C device */ - uchar * buffer /* pointer to data buffer */ - ) -{ - u32 temp; - u32 to_count = I2C_DELAY; - u32 op_status = TSI108_I2C_TIMEOUT_ERR; - - /* Check if I2C operation is in progress */ - temp = *(u32 *) (CONFIG_SYS_TSI108_CSR_BASE + TSI108_I2C_OFFSET + I2C_CNTRL2); - - if (0 == (temp & (I2C_CNTRL2_RD_STATUS | I2C_CNTRL2_WR_STATUS | I2C_CNTRL2_START))) { - /* Place data into the I2C Tx Register */ - *(u32 *) (CONFIG_SYS_TSI108_CSR_BASE + TSI108_I2C_OFFSET + - I2C_TX_DATA) = (u32) * buffer; - - /* Set device address and operation */ - temp = - I2C_CNTRL1_I2CWRITE | (byte_addr << 16) | - ((chip_addr & 0x07) << 8) | ((chip_addr >> 3) & 0x0F); - *(u32 *) (CONFIG_SYS_TSI108_CSR_BASE + TSI108_I2C_OFFSET + - I2C_CNTRL1) = temp; - - /* Issue the write command (at this moment all other parameters - * are 0 (size = 1 byte, lane = 0) - */ - - *(u32 *) (CONFIG_SYS_TSI108_CSR_BASE + TSI108_I2C_OFFSET + - I2C_CNTRL2) = (I2C_CNTRL2_START); - - op_status = TSI108_I2C_TIMEOUT_ERR; - - /* Wait until operation completed */ - do { - /* Read I2C operation status */ - temp = *(u32 *) (CONFIG_SYS_TSI108_CSR_BASE + TSI108_I2C_OFFSET + I2C_CNTRL2); - - if (0 == (temp & (I2C_CNTRL2_WR_STATUS | I2C_CNTRL2_START))) { - if (0 == (temp & - (I2C_CNTRL2_I2C_CFGERR | - I2C_CNTRL2_I2C_TO_ERR))) { - op_status = TSI108_I2C_SUCCESS; - } else { - /* report detected HW error */ - op_status = TSI108_I2C_IF_ERROR; - - DPRINT (("I2C HW error reported: 0x%02x\n", temp)); - } - - break; - } - - } while (to_count--); - } else { - op_status = TSI108_I2C_IF_BUSY; - - DPRINT (("I2C Transaction start failed: 0x%02x\n", temp)); - } - - return op_status; -} - -/* - * I2C Write interface as defined in "include/i2c.h" : - * chip_addr: I2C chip address, range 0..127 - * byte_addr: Memory or register address within the chip - * alen: Number of bytes to use for addr (typically 1, 2 for larger - * memories, 0 for register type devices with only one - * register) - * buffer: Pointer to data to be written - * len: How many bytes to write - * - * Returns: 0 on success, not 0 on failure - */ - -int i2c_write (uchar chip_addr, uint byte_addr, int alen, uchar * buffer, - int len) -{ - u32 op_status = TSI108_I2C_PARAM_ERR; - - /* Check for valid I2C address */ - if (chip_addr <= 0x7F && (byte_addr + len) <= (0x01 << (alen * 8))) { - while (len--) { - op_status = - i2c_write_byte (chip_addr, byte_addr++, buffer++); - - if (TSI108_I2C_SUCCESS != op_status) { - DPRINT (("I2C write_byte() failed: 0x%02x (%d left)\n", op_status, len)); - - break; - } - } - } - - return op_status; -} - -/* - * I2C interface function as defined in "include/i2c.h". - * Probe the given I2C chip address by reading single byte from offset 0. - * Returns 0 if a chip responded, not 0 on failure. - */ - -int i2c_probe (uchar chip) -{ - u32 tmp; - - /* - * Try to read the first location of the chip. - * The Tsi108 HW doesn't support sending just the chip address - * and checkong for an back. - */ - return i2c_read (chip, 0, 1, (uchar *)&tmp, 1); -} - -#endif -- cgit v1.2.3