From: Masahiro Yamada Date: Thu, 26 Oct 2017 12:24:17 +0000 (+0900) Subject: i2c: fti2c010: remove unused/unmaintained driver X-Git-Url: http://git.dujemihanovic.xyz/login.html?a=commitdiff_plain;h=af6715bfb44a26de93fafebe93872f12e9817f61;p=u-boot.git i2c: fti2c010: remove unused/unmaintained driver CONFIG_SYS_I2C_FTI2C010 is not enabled by anyone. Commit 2852709676c8 ("dm: i2c: Add a note to I2C drivers which need conversion") prompted to convert this driver to DM before June 2017, but not converted yet. Signed-off-by: Masahiro Yamada Acked-by: Heiko Schocher --- diff --git a/drivers/i2c/Makefile b/drivers/i2c/Makefile index 121e4e2990..3a8c61b485 100644 --- a/drivers/i2c/Makefile +++ b/drivers/i2c/Makefile @@ -20,7 +20,6 @@ obj-$(CONFIG_SYS_I2C_CADENCE) += i2c-cdns.o obj-$(CONFIG_SYS_I2C_DAVINCI) += davinci_i2c.o obj-$(CONFIG_SYS_I2C_DW) += designware_i2c.o obj-$(CONFIG_SYS_I2C_FSL) += fsl_i2c.o -obj-$(CONFIG_SYS_I2C_FTI2C010) += fti2c010.o obj-$(CONFIG_SYS_I2C_IHS) += ihs_i2c.o obj-$(CONFIG_SYS_I2C_INTEL) += intel_i2c.o obj-$(CONFIG_SYS_I2C_IMX_LPI2C) += imx_lpi2c.o diff --git a/drivers/i2c/fti2c010.c b/drivers/i2c/fti2c010.c deleted file mode 100644 index 4da959fa53..0000000000 --- a/drivers/i2c/fti2c010.c +++ /dev/null @@ -1,340 +0,0 @@ -/* - * Faraday I2C Controller - * - * (C) Copyright 2010 Faraday Technology - * Dante Su - * - * SPDX-License-Identifier: GPL-2.0+ - * - * 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 - -#include "fti2c010.h" - -#ifndef CONFIG_SYS_I2C_SPEED -#define CONFIG_SYS_I2C_SPEED 5000 -#endif - -#ifndef CONFIG_SYS_I2C_SLAVE -#define CONFIG_SYS_I2C_SLAVE 0 -#endif - -#ifndef CONFIG_FTI2C010_CLOCK -#define CONFIG_FTI2C010_CLOCK clk_get_rate("I2C") -#endif - -#ifndef CONFIG_FTI2C010_TIMEOUT -#define CONFIG_FTI2C010_TIMEOUT 10 /* ms */ -#endif - -/* 7-bit dev address + 1-bit read/write */ -#define I2C_RD(dev) ((((dev) << 1) & 0xfe) | 1) -#define I2C_WR(dev) (((dev) << 1) & 0xfe) - -struct fti2c010_chip { - struct fti2c010_regs *regs; -}; - -static struct fti2c010_chip chip_list[] = { - { - .regs = (struct fti2c010_regs *)CONFIG_FTI2C010_BASE, - }, -#ifdef CONFIG_FTI2C010_BASE1 - { - .regs = (struct fti2c010_regs *)CONFIG_FTI2C010_BASE1, - }, -#endif -#ifdef CONFIG_FTI2C010_BASE2 - { - .regs = (struct fti2c010_regs *)CONFIG_FTI2C010_BASE2, - }, -#endif -#ifdef CONFIG_FTI2C010_BASE3 - { - .regs = (struct fti2c010_regs *)CONFIG_FTI2C010_BASE3, - }, -#endif -}; - -static int fti2c010_reset(struct fti2c010_chip *chip) -{ - ulong ts; - int ret = -1; - struct fti2c010_regs *regs = chip->regs; - - writel(CR_I2CRST, ®s->cr); - for (ts = get_timer(0); get_timer(ts) < CONFIG_FTI2C010_TIMEOUT; ) { - if (!(readl(®s->cr) & CR_I2CRST)) { - ret = 0; - break; - } - } - - if (ret) - printf("fti2c010: reset timeout\n"); - - return ret; -} - -static int fti2c010_wait(struct fti2c010_chip *chip, uint32_t mask) -{ - int ret = -1; - uint32_t stat, ts; - struct fti2c010_regs *regs = chip->regs; - - for (ts = get_timer(0); get_timer(ts) < CONFIG_FTI2C010_TIMEOUT; ) { - stat = readl(®s->sr); - if ((stat & mask) == mask) { - ret = 0; - break; - } - } - - return ret; -} - -static unsigned int set_i2c_bus_speed(struct fti2c010_chip *chip, - unsigned int speed) -{ - struct fti2c010_regs *regs = chip->regs; - unsigned int clk = CONFIG_FTI2C010_CLOCK; - unsigned int gsr = 0; - unsigned int tsr = 32; - unsigned int div, rate; - - for (div = 0; div < 0x3ffff; ++div) { - /* SCLout = PCLK/(2*(COUNT + 2) + GSR) */ - rate = clk / (2 * (div + 2) + gsr); - if (rate <= speed) - break; - } - - writel(TGSR_GSR(gsr) | TGSR_TSR(tsr), ®s->tgsr); - writel(CDR_DIV(div), ®s->cdr); - - return rate; -} - -/* - * Initialization, must be called once on start up, may be called - * repeatedly to change the speed and slave addresses. - */ -static void fti2c010_init(struct i2c_adapter *adap, int speed, int slaveaddr) -{ - struct fti2c010_chip *chip = chip_list + adap->hwadapnr; - - if (adap->init_done) - return; - -#ifdef CONFIG_SYS_I2C_INIT_BOARD - /* Call board specific i2c bus reset routine before accessing the - * environment, which might be in a chip on that bus. For details - * about this problem see doc/I2C_Edge_Conditions. - */ - i2c_init_board(); -#endif - - /* master init */ - - fti2c010_reset(chip); - - set_i2c_bus_speed(chip, speed); - - /* slave init, don't care */ -} - -/* - * Probe the given I2C chip address. Returns 0 if a chip responded, - * not 0 on failure. - */ -static int fti2c010_probe(struct i2c_adapter *adap, u8 dev) -{ - struct fti2c010_chip *chip = chip_list + adap->hwadapnr; - struct fti2c010_regs *regs = chip->regs; - int ret; - - /* 1. Select slave device (7bits Address + 1bit R/W) */ - writel(I2C_WR(dev), ®s->dr); - writel(CR_ENABLE | CR_TBEN | CR_START, ®s->cr); - ret = fti2c010_wait(chip, SR_DT); - if (ret) - return ret; - - /* 2. Select device register */ - writel(0, ®s->dr); - writel(CR_ENABLE | CR_TBEN, ®s->cr); - ret = fti2c010_wait(chip, SR_DT); - - return ret; -} - -static void to_i2c_addr(u8 *buf, uint32_t addr, int alen) -{ - int i, shift; - - if (!buf || alen <= 0) - return; - - /* MSB first */ - i = 0; - shift = (alen - 1) * 8; - while (alen-- > 0) { - buf[i] = (u8)(addr >> shift); - shift -= 8; - } -} - -static int fti2c010_read(struct i2c_adapter *adap, - u8 dev, uint addr, int alen, uchar *buf, int len) -{ - struct fti2c010_chip *chip = chip_list + adap->hwadapnr; - struct fti2c010_regs *regs = chip->regs; - int ret, pos; - uchar paddr[4] = { 0 }; - - to_i2c_addr(paddr, addr, alen); - - /* - * Phase A. Set register address - */ - - /* A.1 Select slave device (7bits Address + 1bit R/W) */ - writel(I2C_WR(dev), ®s->dr); - writel(CR_ENABLE | CR_TBEN | CR_START, ®s->cr); - ret = fti2c010_wait(chip, SR_DT); - if (ret) - return ret; - - /* A.2 Select device register */ - for (pos = 0; pos < alen; ++pos) { - uint32_t ctrl = CR_ENABLE | CR_TBEN; - - writel(paddr[pos], ®s->dr); - writel(ctrl, ®s->cr); - ret = fti2c010_wait(chip, SR_DT); - if (ret) - return ret; - } - - /* - * Phase B. Get register data - */ - - /* B.1 Select slave device (7bits Address + 1bit R/W) */ - writel(I2C_RD(dev), ®s->dr); - writel(CR_ENABLE | CR_TBEN | CR_START, ®s->cr); - ret = fti2c010_wait(chip, SR_DT); - if (ret) - return ret; - - /* B.2 Get register data */ - for (pos = 0; pos < len; ++pos) { - uint32_t ctrl = CR_ENABLE | CR_TBEN; - uint32_t stat = SR_DR; - - if (pos == len - 1) { - ctrl |= CR_NAK | CR_STOP; - stat |= SR_ACK; - } - writel(ctrl, ®s->cr); - ret = fti2c010_wait(chip, stat); - if (ret) - break; - buf[pos] = (uchar)(readl(®s->dr) & 0xFF); - } - - return ret; -} - -static int fti2c010_write(struct i2c_adapter *adap, - u8 dev, uint addr, int alen, u8 *buf, int len) -{ - struct fti2c010_chip *chip = chip_list + adap->hwadapnr; - struct fti2c010_regs *regs = chip->regs; - int ret, pos; - uchar paddr[4] = { 0 }; - - to_i2c_addr(paddr, addr, alen); - - /* - * Phase A. Set register address - * - * A.1 Select slave device (7bits Address + 1bit R/W) - */ - writel(I2C_WR(dev), ®s->dr); - writel(CR_ENABLE | CR_TBEN | CR_START, ®s->cr); - ret = fti2c010_wait(chip, SR_DT); - if (ret) - return ret; - - /* A.2 Select device register */ - for (pos = 0; pos < alen; ++pos) { - uint32_t ctrl = CR_ENABLE | CR_TBEN; - - writel(paddr[pos], ®s->dr); - writel(ctrl, ®s->cr); - ret = fti2c010_wait(chip, SR_DT); - if (ret) - return ret; - } - - /* - * Phase B. Set register data - */ - for (pos = 0; pos < len; ++pos) { - uint32_t ctrl = CR_ENABLE | CR_TBEN; - - if (pos == len - 1) - ctrl |= CR_STOP; - writel(buf[pos], ®s->dr); - writel(ctrl, ®s->cr); - ret = fti2c010_wait(chip, SR_DT); - if (ret) - break; - } - - return ret; -} - -static unsigned int fti2c010_set_bus_speed(struct i2c_adapter *adap, - unsigned int speed) -{ - struct fti2c010_chip *chip = chip_list + adap->hwadapnr; - int ret; - - fti2c010_reset(chip); - ret = set_i2c_bus_speed(chip, speed); - - return ret; -} - -/* - * Register i2c adapters - */ -U_BOOT_I2C_ADAP_COMPLETE(i2c_0, fti2c010_init, fti2c010_probe, fti2c010_read, - fti2c010_write, fti2c010_set_bus_speed, - CONFIG_SYS_I2C_SPEED, CONFIG_SYS_I2C_SLAVE, - 0) -#ifdef CONFIG_FTI2C010_BASE1 -U_BOOT_I2C_ADAP_COMPLETE(i2c_1, fti2c010_init, fti2c010_probe, fti2c010_read, - fti2c010_write, fti2c010_set_bus_speed, - CONFIG_SYS_I2C_SPEED, CONFIG_SYS_I2C_SLAVE, - 1) -#endif -#ifdef CONFIG_FTI2C010_BASE2 -U_BOOT_I2C_ADAP_COMPLETE(i2c_2, fti2c010_init, fti2c010_probe, fti2c010_read, - fti2c010_write, fti2c010_set_bus_speed, - CONFIG_SYS_I2C_SPEED, CONFIG_SYS_I2C_SLAVE, - 2) -#endif -#ifdef CONFIG_FTI2C010_BASE3 -U_BOOT_I2C_ADAP_COMPLETE(i2c_3, fti2c010_init, fti2c010_probe, fti2c010_read, - fti2c010_write, fti2c010_set_bus_speed, - CONFIG_SYS_I2C_SPEED, CONFIG_SYS_I2C_SLAVE, - 3) -#endif diff --git a/drivers/i2c/fti2c010.h b/drivers/i2c/fti2c010.h deleted file mode 100644 index b9d0eb74a6..0000000000 --- a/drivers/i2c/fti2c010.h +++ /dev/null @@ -1,80 +0,0 @@ -/* - * Faraday I2C Controller - * - * (C) Copyright 2010 Faraday Technology - * Dante Su - * - * SPDX-License-Identifier: GPL-2.0+ - */ - -#ifndef __FTI2C010_H -#define __FTI2C010_H - -/* - * FTI2C010 registers - */ -struct fti2c010_regs { - uint32_t cr; /* 0x00: control register */ - uint32_t sr; /* 0x04: status register */ - uint32_t cdr; /* 0x08: clock division register */ - uint32_t dr; /* 0x0c: data register */ - uint32_t sar; /* 0x10: slave address register */ - uint32_t tgsr;/* 0x14: time & glitch suppression register */ - uint32_t bmr; /* 0x18: bus monitor register */ - uint32_t rsvd[5]; - uint32_t revr;/* 0x30: revision register */ -}; - -/* - * control register - */ -#define CR_ALIRQ 0x2000 /* arbitration lost interrupt (master) */ -#define CR_SAMIRQ 0x1000 /* slave address match interrupt (slave) */ -#define CR_STOPIRQ 0x800 /* stop condition interrupt (slave) */ -#define CR_NAKRIRQ 0x400 /* NACK response interrupt (master) */ -#define CR_DRIRQ 0x200 /* rx interrupt (both) */ -#define CR_DTIRQ 0x100 /* tx interrupt (both) */ -#define CR_TBEN 0x80 /* tx enable (both) */ -#define CR_NAK 0x40 /* NACK (both) */ -#define CR_STOP 0x20 /* stop (master) */ -#define CR_START 0x10 /* start (master) */ -#define CR_GCEN 0x8 /* general call support (slave) */ -#define CR_SCLEN 0x4 /* enable clock out (master) */ -#define CR_I2CEN 0x2 /* enable I2C (both) */ -#define CR_I2CRST 0x1 /* reset I2C (both) */ -#define CR_ENABLE \ - (CR_ALIRQ | CR_NAKRIRQ | CR_DRIRQ | CR_DTIRQ | CR_SCLEN | CR_I2CEN) - -/* - * status register - */ -#define SR_CLRAL 0x400 /* clear arbitration lost */ -#define SR_CLRGC 0x200 /* clear general call */ -#define SR_CLRSAM 0x100 /* clear slave address match */ -#define SR_CLRSTOP 0x80 /* clear stop */ -#define SR_CLRNAKR 0x40 /* clear NACK respond */ -#define SR_DR 0x20 /* rx ready */ -#define SR_DT 0x10 /* tx done */ -#define SR_BB 0x8 /* bus busy */ -#define SR_BUSY 0x4 /* chip busy */ -#define SR_ACK 0x2 /* ACK/NACK received */ -#define SR_RW 0x1 /* set when master-rx or slave-tx mode */ - -/* - * clock division register - */ -#define CDR_DIV(n) ((n) & 0x3ffff) - -/* - * time & glitch suppression register - */ -#define TGSR_GSR(n) (((n) & 0x7) << 10) -#define TGSR_TSR(n) ((n) & 0x3ff) - -/* - * bus monitor register - */ -#define BMR_SCL 0x2 /* SCL is pull-up */ -#define BMR_SDA 0x1 /* SDA is pull-up */ - -#endif /* __FTI2C010_H */