1 files changed, 0 insertions, 496 deletions

diff --git a/drivers/i2c/kirkwood_i2c.c b/drivers/i2c/kirkwood_i2c.c
deleted file mode 100644
index a4409be115..0000000000
--- a/drivers/i2c/kirkwood_i2c.c
+++ /dev/null
@@ -1,496 +0,0 @@
-/*
- * Driver for the i2c controller on the Marvell line of host bridges
- * (e.g, gt642[46]0, mv643[46]0, mv644[46]0, Orion SoC family),
- * and Kirkwood family.
- *
- * Based on:
- * Author: Mark A. Greer <mgreer@mvista.com>
- * 2005 (c) MontaVista, Software, Inc.
- *
- * See file CREDITS for list of people who contributed to this
- * project.
- *
- * 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., 51 Franklin Street, Fifth Floor, Boston,
- * MA 02110-1301 USA
- *
- * ported from Linux to u-boot
- * (C) Copyright 2009
- * Heiko Schocher, DENX Software Engineering, hs@denx.de.
- */
-#include <common.h>
-#include <i2c.h>
-#include <asm/arch/kirkwood.h>
-#include <asm/errno.h>
-#include <asm/io.h>
-
-DECLARE_GLOBAL_DATA_PTR;
-
-static unsigned int i2c_bus_num __attribute__ ((section (".data"))) = 0;
-#if defined(CONFIG_I2C_MUX)
-static unsigned int i2c_bus_num_mux __attribute__ ((section ("data"))) = 0;
-#endif
-
-/* Register defines */
-#define	KW_I2C_REG_SLAVE_ADDR			0x00
-#define	KW_I2C_REG_DATA				0x04
-#define	KW_I2C_REG_CONTROL			0x08
-#define	KW_I2C_REG_STATUS			0x0c
-#define	KW_I2C_REG_BAUD				0x0c
-#define	KW_I2C_REG_EXT_SLAVE_ADDR		0x10
-#define	KW_I2C_REG_SOFT_RESET			0x1c
-
-#define	KW_I2C_REG_CONTROL_ACK			0x00000004
-#define	KW_I2C_REG_CONTROL_IFLG			0x00000008
-#define	KW_I2C_REG_CONTROL_STOP			0x00000010
-#define	KW_I2C_REG_CONTROL_START		0x00000020
-#define	KW_I2C_REG_CONTROL_TWSIEN		0x00000040
-#define	KW_I2C_REG_CONTROL_INTEN		0x00000080
-
-/* Ctlr status values */
-#define	KW_I2C_STATUS_BUS_ERR			0x00
-#define	KW_I2C_STATUS_MAST_START		0x08
-#define	KW_I2C_STATUS_MAST_REPEAT_START		0x10
-#define	KW_I2C_STATUS_MAST_WR_ADDR_ACK		0x18
-#define	KW_I2C_STATUS_MAST_WR_ADDR_NO_ACK	0x20
-#define	KW_I2C_STATUS_MAST_WR_ACK		0x28
-#define	KW_I2C_STATUS_MAST_WR_NO_ACK		0x30
-#define	KW_I2C_STATUS_MAST_LOST_ARB		0x38
-#define	KW_I2C_STATUS_MAST_RD_ADDR_ACK		0x40
-#define	KW_I2C_STATUS_MAST_RD_ADDR_NO_ACK	0x48
-#define	KW_I2C_STATUS_MAST_RD_DATA_ACK		0x50
-#define	KW_I2C_STATUS_MAST_RD_DATA_NO_ACK	0x58
-#define	KW_I2C_STATUS_MAST_WR_ADDR_2_ACK	0xd0
-#define	KW_I2C_STATUS_MAST_WR_ADDR_2_NO_ACK	0xd8
-#define	KW_I2C_STATUS_MAST_RD_ADDR_2_ACK	0xe0
-#define	KW_I2C_STATUS_MAST_RD_ADDR_2_NO_ACK	0xe8
-#define	KW_I2C_STATUS_NO_STATUS			0xf8
-
-/* Driver states */
-enum {
-	KW_I2C_STATE_INVALID,
-	KW_I2C_STATE_IDLE,
-	KW_I2C_STATE_WAITING_FOR_START_COND,
-	KW_I2C_STATE_WAITING_FOR_ADDR_1_ACK,
-	KW_I2C_STATE_WAITING_FOR_ADDR_2_ACK,
-	KW_I2C_STATE_WAITING_FOR_SLAVE_ACK,
-	KW_I2C_STATE_WAITING_FOR_SLAVE_DATA,
-};
-
-/* Driver actions */
-enum {
-	KW_I2C_ACTION_INVALID,
-	KW_I2C_ACTION_CONTINUE,
-	KW_I2C_ACTION_SEND_START,
-	KW_I2C_ACTION_SEND_ADDR_1,
-	KW_I2C_ACTION_SEND_ADDR_2,
-	KW_I2C_ACTION_SEND_DATA,
-	KW_I2C_ACTION_RCV_DATA,
-	KW_I2C_ACTION_RCV_DATA_STOP,
-	KW_I2C_ACTION_SEND_STOP,
-};
-
-/* defines to get compatible with Linux driver */
-#define IRQ_NONE	0x0
-#define IRQ_HANDLED	0x01
-
-#define I2C_M_TEN	0x01
-#define I2C_M_RD	0x02
-#define	I2C_M_REV_DIR_ADDR	0x04;
-
-struct i2c_msg {
-	u32	addr;
-	u32	flags;
-	u8	*buf;
-	u32	len;
-};
-
-struct kirkwood_i2c_data {
-	int			irq;
-	u32			state;
-	u32			action;
-	u32			aborting;
-	u32			cntl_bits;
-	void			*reg_base;
-	u32			reg_base_p;
-	u32			reg_size;
-	u32			addr1;
-	u32			addr2;
-	u32			bytes_left;
-	u32			byte_posn;
-	u32			block;
-	int			rc;
-	u32			freq_m;
-	u32			freq_n;
-	struct i2c_msg		*msg;
-};
-
-static struct kirkwood_i2c_data __drv_data __attribute__ ((section (".data")));
-static struct kirkwood_i2c_data *drv_data = &__drv_data;
-static struct i2c_msg __i2c_msg __attribute__ ((section (".data")));
-static struct i2c_msg *kirkwood_i2c_msg = &__i2c_msg;
-
-/*
- *****************************************************************************
- *
- *	Finite State Machine & Interrupt Routines
- *
- *****************************************************************************
- */
-
-static inline int abs(int n)
-{
-	 if(n >= 0)
-		return n;
-	else
-		return n * -1;
-}
-
-static void kirkwood_calculate_speed(int speed)
-{
-	int	calcspeed;
-	int	diff;
-	int	best_diff = CONFIG_SYS_TCLK;
-	int	best_speed = 0;
-	int	m, n;
-	int	tmp[8] = {2, 4, 8, 16, 32, 64, 128, 256};
-
-	for (n = 0; n < 8; n++) {
-		for (m = 0; m < 16; m++) {
-			calcspeed = CONFIG_SYS_TCLK / (10 * (m + 1) * tmp[n]);
-			diff = abs((speed - calcspeed));
-			if ( diff < best_diff) {
-				best_diff = diff;
-				best_speed = calcspeed;
-				drv_data->freq_m = m;
-				drv_data->freq_n = n;
-			}
-		}
-	}
-}
-
-/* Reset hardware and initialize FSM */
-static void
-kirkwood_i2c_hw_init(int speed, int slaveadd)
-{
-	drv_data->state = KW_I2C_STATE_IDLE;
-
-	kirkwood_calculate_speed(speed);
-	writel(0, CONFIG_I2C_KW_REG_BASE + KW_I2C_REG_SOFT_RESET);
-	writel((((drv_data->freq_m & 0xf) << 3) | (drv_data->freq_n & 0x7)),
-		CONFIG_I2C_KW_REG_BASE + KW_I2C_REG_BAUD);
-	writel(slaveadd, CONFIG_I2C_KW_REG_BASE + KW_I2C_REG_SLAVE_ADDR);
-	writel(0, CONFIG_I2C_KW_REG_BASE + KW_I2C_REG_EXT_SLAVE_ADDR);
-	writel(KW_I2C_REG_CONTROL_TWSIEN | KW_I2C_REG_CONTROL_STOP,
-		CONFIG_I2C_KW_REG_BASE + KW_I2C_REG_CONTROL);
-}
-
-static void
-kirkwood_i2c_fsm(u32 status)
-{
-	/*
-	 * If state is idle, then this is likely the remnants of an old
-	 * operation that driver has given up on or the user has killed.
-	 * If so, issue the stop condition and go to idle.
-	 */
-	if (drv_data->state == KW_I2C_STATE_IDLE) {
-		drv_data->action = KW_I2C_ACTION_SEND_STOP;
-		return;
-	}
-
-	/* The status from the ctlr [mostly] tells us what to do next */
-	switch (status) {
-	/* Start condition interrupt */
-	case KW_I2C_STATUS_MAST_START: /* 0x08 */
-	case KW_I2C_STATUS_MAST_REPEAT_START: /* 0x10 */
-		drv_data->action = KW_I2C_ACTION_SEND_ADDR_1;
-		drv_data->state = KW_I2C_STATE_WAITING_FOR_ADDR_1_ACK;
-		break;
-
-	/* Performing a write */
-	case KW_I2C_STATUS_MAST_WR_ADDR_ACK: /* 0x18 */
-		if (drv_data->msg->flags & I2C_M_TEN) {
-			drv_data->action = KW_I2C_ACTION_SEND_ADDR_2;
-			drv_data->state =
-				KW_I2C_STATE_WAITING_FOR_ADDR_2_ACK;
-			break;
-		}
-		/* FALLTHRU */
-	case KW_I2C_STATUS_MAST_WR_ADDR_2_ACK: /* 0xd0 */
-	case KW_I2C_STATUS_MAST_WR_ACK: /* 0x28 */
-		if ((drv_data->bytes_left == 0)
-				|| (drv_data->aborting
-					&& (drv_data->byte_posn != 0))) {
-			drv_data->action = KW_I2C_ACTION_SEND_STOP;
-			drv_data->state = KW_I2C_STATE_IDLE;
-		} else {
-			drv_data->action = KW_I2C_ACTION_SEND_DATA;
-			drv_data->state =
-				KW_I2C_STATE_WAITING_FOR_SLAVE_ACK;
-			drv_data->bytes_left--;
-		}
-		break;
-
-	/* Performing a read */
-	case KW_I2C_STATUS_MAST_RD_ADDR_ACK: /* 40 */
-		if (drv_data->msg->flags & I2C_M_TEN) {
-			drv_data->action = KW_I2C_ACTION_SEND_ADDR_2;
-			drv_data->state =
-				KW_I2C_STATE_WAITING_FOR_ADDR_2_ACK;
-			break;
-		}
-		/* FALLTHRU */
-	case KW_I2C_STATUS_MAST_RD_ADDR_2_ACK: /* 0xe0 */
-		if (drv_data->bytes_left == 0) {
-			drv_data->action = KW_I2C_ACTION_SEND_STOP;
-			drv_data->state = KW_I2C_STATE_IDLE;
-			break;
-		}
-		/* FALLTHRU */
-	case KW_I2C_STATUS_MAST_RD_DATA_ACK: /* 0x50 */
-		if (status != KW_I2C_STATUS_MAST_RD_DATA_ACK)
-			drv_data->action = KW_I2C_ACTION_CONTINUE;
-		else {
-			drv_data->action = KW_I2C_ACTION_RCV_DATA;
-			drv_data->bytes_left--;
-		}
-		drv_data->state = KW_I2C_STATE_WAITING_FOR_SLAVE_DATA;
-
-		if ((drv_data->bytes_left == 1) || drv_data->aborting)
-			drv_data->cntl_bits &= ~KW_I2C_REG_CONTROL_ACK;
-		break;
-
-	case KW_I2C_STATUS_MAST_RD_DATA_NO_ACK: /* 0x58 */
-		drv_data->action = KW_I2C_ACTION_RCV_DATA_STOP;
-		drv_data->state = KW_I2C_STATE_IDLE;
-		break;
-
-	case KW_I2C_STATUS_MAST_WR_ADDR_NO_ACK: /* 0x20 */
-	case KW_I2C_STATUS_MAST_WR_NO_ACK: /* 30 */
-	case KW_I2C_STATUS_MAST_RD_ADDR_NO_ACK: /* 48 */
-		/* Doesn't seem to be a device at other end */
-		drv_data->action = KW_I2C_ACTION_SEND_STOP;
-		drv_data->state = KW_I2C_STATE_IDLE;
-		drv_data->rc = -ENODEV;
-		break;
-
-	default:
-		printf("kirkwood_i2c_fsm: Ctlr Error -- state: 0x%x, "
-			"status: 0x%x, addr: 0x%x, flags: 0x%x\n",
-			 drv_data->state, status, drv_data->msg->addr,
-			 drv_data->msg->flags);
-		drv_data->action = KW_I2C_ACTION_SEND_STOP;
-		kirkwood_i2c_hw_init(CONFIG_SYS_I2C_SPEED, CONFIG_SYS_I2C_SLAVE);
-		drv_data->rc = -EIO;
-	}
-}
-
-static void
-kirkwood_i2c_do_action(void)
-{
-	switch(drv_data->action) {
-	case KW_I2C_ACTION_CONTINUE:
-		writel(drv_data->cntl_bits,
-			CONFIG_I2C_KW_REG_BASE + KW_I2C_REG_CONTROL);
-		break;
-
-	case KW_I2C_ACTION_SEND_START:
-		writel(drv_data->cntl_bits | KW_I2C_REG_CONTROL_START,
-			CONFIG_I2C_KW_REG_BASE + KW_I2C_REG_CONTROL);
-		break;
-
-	case KW_I2C_ACTION_SEND_ADDR_1:
-		writel(drv_data->addr1,
-			CONFIG_I2C_KW_REG_BASE + KW_I2C_REG_DATA);
-		writel(drv_data->cntl_bits,
-			CONFIG_I2C_KW_REG_BASE + KW_I2C_REG_CONTROL);
-		break;
-
-	case KW_I2C_ACTION_SEND_ADDR_2:
-		writel(drv_data->addr2,
-			CONFIG_I2C_KW_REG_BASE + KW_I2C_REG_DATA);
-		writel(drv_data->cntl_bits,
-			CONFIG_I2C_KW_REG_BASE + KW_I2C_REG_CONTROL);
-		break;
-
-	case KW_I2C_ACTION_SEND_DATA:
-		writel(drv_data->msg->buf[drv_data->byte_posn++],
-			CONFIG_I2C_KW_REG_BASE + KW_I2C_REG_DATA);
-		writel(drv_data->cntl_bits,
-			CONFIG_I2C_KW_REG_BASE + KW_I2C_REG_CONTROL);
-		break;
-
-	case KW_I2C_ACTION_RCV_DATA:
-		drv_data->msg->buf[drv_data->byte_posn++] =
-			readl(CONFIG_I2C_KW_REG_BASE + KW_I2C_REG_DATA);
-		writel(drv_data->cntl_bits,
-			CONFIG_I2C_KW_REG_BASE + KW_I2C_REG_CONTROL);
-		break;
-
-	case KW_I2C_ACTION_RCV_DATA_STOP:
-		drv_data->msg->buf[drv_data->byte_posn++] =
-			readl(CONFIG_I2C_KW_REG_BASE + KW_I2C_REG_DATA);
-		drv_data->cntl_bits &= ~KW_I2C_REG_CONTROL_INTEN;
-		writel(drv_data->cntl_bits | KW_I2C_REG_CONTROL_STOP,
-			CONFIG_I2C_KW_REG_BASE + KW_I2C_REG_CONTROL);
-		drv_data->block = 0;
-		break;
-
-	case KW_I2C_ACTION_INVALID:
-	default:
-		printf("kirkwood_i2c_do_action: Invalid action: %d\n",
-			drv_data->action);
-		drv_data->rc = -EIO;
-		/* FALLTHRU */
-	case KW_I2C_ACTION_SEND_STOP:
-		drv_data->cntl_bits &= ~KW_I2C_REG_CONTROL_INTEN;
-		writel(drv_data->cntl_bits | KW_I2C_REG_CONTROL_STOP,
-			CONFIG_I2C_KW_REG_BASE + KW_I2C_REG_CONTROL);
-		drv_data->block = 0;
-		break;
-	}
-}
-
-static	int
-kirkwood_i2c_intr(void)
-{
-	u32		status;
-	u32		ctrl;
-	int		rc = IRQ_NONE;
-
-	ctrl = readl(CONFIG_I2C_KW_REG_BASE + KW_I2C_REG_CONTROL);
-	while ((ctrl & KW_I2C_REG_CONTROL_IFLG) &&
-		(drv_data->rc == 0)) {
-		status = readl(CONFIG_I2C_KW_REG_BASE + KW_I2C_REG_STATUS);
-		kirkwood_i2c_fsm(status);
-		kirkwood_i2c_do_action();
-		rc = IRQ_HANDLED;
-		ctrl = readl(CONFIG_I2C_KW_REG_BASE + KW_I2C_REG_CONTROL);
-		udelay(1000);
-	}
-	return rc;
-}
-
-static void
-kirkwood_i2c_doio(struct i2c_msg *msg)
-{
-	int	ret;
-
-	while ((drv_data->rc == 0) && (drv_data->state != KW_I2C_STATE_IDLE)) {
-		/* poll Status register */
-		ret = kirkwood_i2c_intr();
-		if (ret == IRQ_NONE)
-			udelay(10);
-	}
-}
-
-static void
-kirkwood_i2c_prepare_for_io(struct i2c_msg *msg)
-{
-	u32	dir = 0;
-
-	drv_data->msg = msg;
-	drv_data->byte_posn = 0;
-	drv_data->bytes_left = msg->len;
-	drv_data->aborting = 0;
-	drv_data->rc = 0;
-	/* in u-boot we use no IRQs */
-	drv_data->cntl_bits = KW_I2C_REG_CONTROL_ACK | KW_I2C_REG_CONTROL_TWSIEN;
-
-	if (msg->flags & I2C_M_RD)
-		dir = 1;
-	if (msg->flags & I2C_M_TEN) {
-		drv_data->addr1 = 0xf0 | (((u32)msg->addr & 0x300) >> 7) | dir;
-		drv_data->addr2 = (u32)msg->addr & 0xff;
-	} else {
-		drv_data->addr1 = ((u32)msg->addr & 0x7f) << 1 | dir;
-		drv_data->addr2 = 0;
-	}
-	/* OK, no start it (from kirkwood_i2c_execute_msg())*/
-	drv_data->action = KW_I2C_ACTION_SEND_START;
-	drv_data->state = KW_I2C_STATE_WAITING_FOR_START_COND;
-	drv_data->block = 1;
-	kirkwood_i2c_do_action();
-}
-
-void
-i2c_init(int speed, int slaveadd)
-{
-	kirkwood_i2c_hw_init(speed, slaveadd);
-}
-
-int
-i2c_read(u8 dev, uint addr, int alen, u8 *data, int length)
-{
-	kirkwood_i2c_msg->buf = data;
-	kirkwood_i2c_msg->len = length;
-	kirkwood_i2c_msg->addr = dev;
-	kirkwood_i2c_msg->flags = I2C_M_RD;
-
-	kirkwood_i2c_prepare_for_io(kirkwood_i2c_msg);
-	kirkwood_i2c_doio(kirkwood_i2c_msg);
-	return drv_data->rc;
-}
-
-int
-i2c_write(u8 dev, uint addr, int alen, u8 *data, int length)
-{
-	kirkwood_i2c_msg->buf = data;
-	kirkwood_i2c_msg->len = length;
-	kirkwood_i2c_msg->addr = dev;
-	kirkwood_i2c_msg->flags = 0;
-
-	kirkwood_i2c_prepare_for_io(kirkwood_i2c_msg);
-	kirkwood_i2c_doio(kirkwood_i2c_msg);
-	return drv_data->rc;
-}
-
-int
-i2c_probe(uchar chip)
-{
-	return i2c_read(chip, 0, 0, NULL, 0);
-}
-
-int i2c_set_bus_num(unsigned int bus)
-{
-#if defined(CONFIG_I2C_MUX)
-	if (bus < CONFIG_SYS_MAX_I2C_BUS) {
-		i2c_bus_num = bus;
-	} else {
-		int	ret;
-
-		ret = i2x_mux_select_mux(bus);
-		if (ret)
-			return ret;
-		i2c_bus_num = 0;
-	}
-	i2c_bus_num_mux = bus;
-#else
-	if (bus > 0) {
-		return -1;
-	}
-
-	i2c_bus_num = bus;
-#endif
-	return 0;
-}
-
-unsigned int i2c_get_bus_num(void)
-{
-#if defined(CONFIG_I2C_MUX)
-	return i2c_bus_num_mux;
-#else
-	return i2c_bus_num;
-#endif
-}