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author | Heiko Schocher <hs@denx.de> | 2013-11-08 08:33:22 +0100 |
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committer | Heiko Schocher <hs@denx.de> | 2013-11-13 06:18:31 +0100 |
commit | 85bb251b393470c6d2a91b8f0f92b9f3fda856ca (patch) | |
tree | 8b392f4c62c6679daaaa80a81f463cd6868399ab /drivers/i2c | |
parent | 0bdffe71fddeaa46768a39305797e4512dee0f15 (diff) | |
download | u-boot-85bb251b393470c6d2a91b8f0f92b9f3fda856ca.zip u-boot-85bb251b393470c6d2a91b8f0f92b9f3fda856ca.tar.gz u-boot-85bb251b393470c6d2a91b8f0f92b9f3fda856ca.tar.bz2 |
i2c, omap1510: remove i2c driver
remove omap1510 i2c driver, as there is no board which uses it
Signed-off-by: Heiko Schocher <hs@denx.de>
Cc: Tom Rini <trini@ti.com>
Cc: Jian Zhang <jzhang@ti.com>
Diffstat (limited to 'drivers/i2c')
-rw-r--r-- | drivers/i2c/Makefile | 1 | ||||
-rw-r--r-- | drivers/i2c/omap1510_i2c.c | 277 |
2 files changed, 0 insertions, 278 deletions
diff --git a/drivers/i2c/Makefile b/drivers/i2c/Makefile index 9dd9094..553b519 100644 --- a/drivers/i2c/Makefile +++ b/drivers/i2c/Makefile @@ -11,7 +11,6 @@ obj-$(CONFIG_DW_I2C) += designware_i2c.o obj-$(CONFIG_I2C_MVTWSI) += mvtwsi.o obj-$(CONFIG_I2C_MV) += mv_i2c.o obj-$(CONFIG_I2C_MXS) += mxs_i2c.o -obj-$(CONFIG_DRIVER_OMAP1510_I2C) += omap1510_i2c.o obj-$(CONFIG_PCA9564_I2C) += pca9564_i2c.o obj-$(CONFIG_DRIVER_S3C24X0_I2C) += s3c24x0_i2c.o obj-$(CONFIG_TSI108_I2C) += tsi108_i2c.o diff --git a/drivers/i2c/omap1510_i2c.c b/drivers/i2c/omap1510_i2c.c deleted file mode 100644 index f91ee88..0000000 --- a/drivers/i2c/omap1510_i2c.c +++ /dev/null @@ -1,277 +0,0 @@ -/* - * Basic I2C functions - * - * Copyright (c) 2003 Texas Instruments - * - * This package is free software; you can redistribute it and/or - * modify it under the terms of the license found in the file - * named COPYING that should have accompanied this file. - * - * THIS PACKAGE IS PROVIDED ``AS IS'' AND WITHOUT ANY EXPRESS OR - * IMPLIED WARRANTIES, INCLUDING, WITHOUT LIMITATION, THE IMPLIED - * WARRANTIES OF MERCHANTIBILITY AND FITNESS FOR A PARTICULAR PURPOSE. - * - * Author: Jian Zhang jzhang@ti.com, Texas Instruments - * - * Copyright (c) 2003 Wolfgang Denk, wd@denx.de - * Rewritten to fit into the current U-Boot framework - * - */ - -#include <common.h> - -static void wait_for_bb (void); -static u16 wait_for_pin (void); - -void i2c_init (int speed, int slaveadd) -{ - u16 scl; - - if (inw (I2C_CON) & I2C_CON_EN) { - outw (0, I2C_CON); - udelay (5000); - } - - /* 12MHz I2C module clock */ - outw (0, I2C_PSC); - outw (I2C_CON_EN, I2C_CON); - outw (0, I2C_SYSTEST); - /* have to enable intrrupts or OMAP i2c module doesn't work */ - outw (I2C_IE_XRDY_IE | I2C_IE_RRDY_IE | I2C_IE_ARDY_IE | - I2C_IE_NACK_IE | I2C_IE_AL_IE, I2C_IE); - scl = (12000000 / 2) / speed - 6; - outw (scl, I2C_SCLL); - outw (scl, I2C_SCLH); - /* own address */ - outw (slaveadd, I2C_OA); - outw (0, I2C_CNT); - udelay (1000); -} - -static int i2c_read_byte (u8 devaddr, u8 regoffset, u8 * value) -{ - int i2c_error = 0; - u16 status; - - /* wait until bus not busy */ - wait_for_bb (); - - /* one byte only */ - outw (1, I2C_CNT); - /* set slave address */ - outw (devaddr, I2C_SA); - /* no stop bit needed here */ - outw (I2C_CON_EN | I2C_CON_MST | I2C_CON_STT | I2C_CON_TRX, I2C_CON); - - status = wait_for_pin (); - - if (status & I2C_STAT_XRDY) { - /* Important: have to use byte access */ - *(volatile u8 *) (I2C_DATA) = regoffset; - udelay (20000); - if (inw (I2C_STAT) & I2C_STAT_NACK) { - i2c_error = 1; - } - } else { - i2c_error = 1; - } - - if (!i2c_error) { - /* free bus, otherwise we can't use a combined transction */ - outw (0, I2C_CON); - while (inw (I2C_STAT) || (inw (I2C_CON) & I2C_CON_MST)) { - udelay (10000); - /* Have to clear pending interrupt to clear I2C_STAT */ - inw (I2C_IV); - } - - wait_for_bb (); - /* set slave address */ - outw (devaddr, I2C_SA); - /* read one byte from slave */ - outw (1, I2C_CNT); - /* need stop bit here */ - outw (I2C_CON_EN | I2C_CON_MST | I2C_CON_STT | I2C_CON_STP, - I2C_CON); - - status = wait_for_pin (); - if (status & I2C_STAT_RRDY) { - *value = inw (I2C_DATA); - udelay (20000); - } else { - i2c_error = 1; - } - - if (!i2c_error) { - outw (I2C_CON_EN, I2C_CON); - while (inw (I2C_STAT) - || (inw (I2C_CON) & I2C_CON_MST)) { - udelay (10000); - inw (I2C_IV); - } - } - } - - return i2c_error; -} - -static int i2c_write_byte (u8 devaddr, u8 regoffset, u8 value) -{ - int i2c_error = 0; - u16 status; - - /* wait until bus not busy */ - wait_for_bb (); - - /* two bytes */ - outw (2, I2C_CNT); - /* set slave address */ - outw (devaddr, I2C_SA); - /* stop bit needed here */ - outw (I2C_CON_EN | I2C_CON_MST | I2C_CON_STT | I2C_CON_TRX | - I2C_CON_STP, I2C_CON); - - /* wait until state change */ - status = wait_for_pin (); - - if (status & I2C_STAT_XRDY) { - /* send out two bytes */ - outw ((value << 8) + regoffset, I2C_DATA); - /* must have enough delay to allow BB bit to go low */ - udelay (30000); - if (inw (I2C_STAT) & I2C_STAT_NACK) { - i2c_error = 1; - } - } else { - i2c_error = 1; - } - - if (!i2c_error) { - outw (I2C_CON_EN, I2C_CON); - while (inw (I2C_STAT) || (inw (I2C_CON) & I2C_CON_MST)) { - udelay (1000); - /* have to read to clear intrrupt */ - inw (I2C_IV); - } - } - - return i2c_error; -} - -int i2c_probe (uchar chip) -{ - int res = 1; - - if (chip == inw (I2C_OA)) { - return res; - } - - /* wait until bus not busy */ - wait_for_bb (); - - /* try to read one byte */ - outw (1, I2C_CNT); - /* set slave address */ - outw (chip, I2C_SA); - /* stop bit needed here */ - outw (I2C_CON_EN | I2C_CON_MST | I2C_CON_STT | I2C_CON_STP, I2C_CON); - /* enough delay for the NACK bit set */ - udelay (2000); - if (!(inw (I2C_STAT) & I2C_STAT_NACK)) { - res = 0; - } else { - outw (inw (I2C_CON) | I2C_CON_STP, I2C_CON); - udelay (20); - wait_for_bb (); - } - - return res; -} - -int i2c_read (uchar chip, uint addr, int alen, uchar * buffer, int len) -{ - int i; - - if (alen > 1) { - printf ("I2C read: addr len %d not supported\n", alen); - return 1; - } - - if (addr + len > 256) { - printf ("I2C read: address out of range\n"); - return 1; - } - - for (i = 0; i < len; i++) { - if (i2c_read_byte (chip, addr + i, &buffer[i])) { - printf ("I2C read: I/O error\n"); - i2c_init (CONFIG_SYS_I2C_SPEED, CONFIG_SYS_I2C_SLAVE); - return 1; - } - } - - return 0; -} - -int i2c_write (uchar chip, uint addr, int alen, uchar * buffer, int len) -{ - int i; - - if (alen > 1) { - printf ("I2C read: addr len %d not supported\n", alen); - return 1; - } - - if (addr + len > 256) { - printf ("I2C read: address out of range\n"); - return 1; - } - - for (i = 0; i < len; i++) { - if (i2c_write_byte (chip, addr + i, buffer[i])) { - printf ("I2C read: I/O error\n"); - i2c_init (CONFIG_SYS_I2C_SPEED, CONFIG_SYS_I2C_SLAVE); - return 1; - } - } - - return 0; -} - -static void wait_for_bb (void) -{ - int timeout = 10; - - while ((inw (I2C_STAT) & I2C_STAT_BB) && timeout--) { - inw (I2C_IV); - udelay (1000); - } - - if (timeout <= 0) { - printf ("timed out in wait_for_bb: I2C_STAT=%x\n", - inw (I2C_STAT)); - } -} - -static u16 wait_for_pin (void) -{ - u16 status, iv; - int timeout = 10; - - do { - udelay (1000); - status = inw (I2C_STAT); - iv = inw (I2C_IV); - } while (!iv && - !(status & - (I2C_STAT_ROVR | I2C_STAT_XUDF | I2C_STAT_XRDY | - I2C_STAT_RRDY | I2C_STAT_ARDY | I2C_STAT_NACK | - I2C_STAT_AL)) && timeout--); - - if (timeout <= 0) { - printf ("timed out in wait_for_pin: I2C_STAT=%x\n", - inw (I2C_STAT)); - } - - return status; -} |