1 files changed, 0 insertions, 589 deletions
diff --git a/drivers/gpu/drm/emgd/emgd/display/pi/tnc/i2c_bitbash_tnc.c b/drivers/gpu/drm/emgd/emgd/display/pi/tnc/i2c_bitbash_tnc.c
deleted file mode 100644
index e18e800575c1..000000000000
--- a/drivers/gpu/drm/emgd/emgd/display/pi/tnc/i2c_bitbash_tnc.c
+++ /dev/null
@@ -1,589 +0,0 @@
-/* -*- pse-c -*-
- *-----------------------------------------------------------------------------
- * Filename: i2c_bitbash_tnc.c
- * $Revision: 1.5 $
- *-----------------------------------------------------------------------------
- * Copyright © 2002-2010, Intel Corporation.
- *
- * This program is free software; you can redistribute it and/or modify it
- * under the terms and conditions of the GNU General Public License,
- * version 2, as published by the Free Software Foundation.
- *
- * This program is distributed in the hope 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 St - Fifth Floor, Boston, MA 02110-1301 USA.
- *
- *-----------------------------------------------------------------------------
- * Description:
- *  Bitbash to read GPIO pins are done on LPC device 0:31:0. So do not
- *  use EMGD_READ32 and EMGD_WRITE32 macros for read/write to device 31. These
- *  macros do mmio only on device2.
- *  To properly read/write mmio on device 31, use
- *  READ_MMIO_REG_TNC(port_type, reg) and
- *  WRITE_MMIO_REG_TNC(port_type, reg, data).
- *  These macros properly set to work for all OSes including VBIOS, but
- *  generate more code compared to EMGD_READ32 and EMGD_WRITE32. So use as
- *  necessary.
- *-----------------------------------------------------------------------------
- */
-
-#define MODULE_NAME hal.dpd
-
-#include <io.h>
-#include <memory.h>
-#include <sched.h>
-
-#include <igd_pwr.h>
-
-#include <general.h>
-#include <context.h>
-#include <mode.h>
-#include <utils.h>
-
-#include <tnc/regs.h>
-
-#include <intelpci.h>
-
-#include "../cmn/i2c_dispatch.h"
-
-/*!
- * @addtogroup display_group
- * @{
- */
-
-static int i2c_error_recovery_tnc(
-	unsigned long hold_time);
-
-static int i2c_write_byte_tnc(
-	unsigned char value,
-	unsigned long hold_time);
-
-static int i2c_read_byte_tnc(
-	unsigned char *value,
-	unsigned char ack,
-	unsigned long hold_time);
-
-int i2c_read_regs_gpio(
-	igd_context_t *context,
-	unsigned long i2c_bus,
-	unsigned long i2c_speed,
-	unsigned long dab,
-	unsigned char reg,
-	unsigned char FAR *buffer,
-	unsigned long num_bytes);
-
-int i2c_write_reg_list_gpio(
-	igd_context_t *context,
-	unsigned long i2c_bus,
-	unsigned long i2c_speed,
-	unsigned long dab,
-	pd_reg_t *reg_list,
-	unsigned long flags);
-
-/* The LVDS GPIO clock lines are GPIOSUS[3]
- * The LVDS GPIO data lines are GPIOSUS[4]
- */
-#define GPIO_CLOCK	0x08
-#define GPIO_DATA	0x10
-
-/*!
- *
- * @param context
- *
- * @return void
- */
-#if 0
-static void enable_gpio_tnc(igd_context_t *context)
-{
-	/*
-	 * NOTE: This really should be a system BIOS job.
-	 * The driver would not touch these register anymore since 
-	 * it would cause the 13x7 panel fail to start.
-	 */
-	
-	/* Enabling LVDS Data and LVDS Clock */
-	unsigned long temp;
-
-	temp = READ_MMIO_REG_TNC(IGD_PORT_LPC, RGEN);
-	temp |= (GPIO_DATA | GPIO_CLOCK);
-	WRITE_MMIO_REG_TNC(IGD_PORT_LPC, RGEN, temp);
-
-	return;
-}
-#endif
-
-/*!
- *
- * @param clock
- * @param data
- *
- * @return void
- */
-static void i2c_get(unsigned long *clock,
-	unsigned long *data)
-{
-	unsigned long temp;
-	/* Set Data as Input */
-	temp = READ_MMIO_REG_TNC(IGD_PORT_LPC, RGIO);
-	temp |= (GPIO_DATA);
-	WRITE_MMIO_REG_TNC(IGD_PORT_LPC, RGIO, temp);
-	/* Read Data */
-	*data = (READ_MMIO_REG_TNC(IGD_PORT_LPC, RGLVL) & GPIO_DATA) ? 1:0;
-	*clock = (READ_MMIO_REG_TNC(IGD_PORT_LPC, RGLVL) & GPIO_CLOCK) ? 1:0;
-
-#if 0
-	EMGD_WRITE32(0, EMGD_MMIO(mmio) + i2c_bus);
-	c = EMGD_READ32(EMGD_MMIO(mmio) + i2c_bus)>>4;
-	*data = (c>>8) & 1;
-	*clock &= 1;
-#endif
-}
-
-/*!
- *
- * @param data
- * @param hold_time
- *
- * @return void
- */
-static void i2c_set_data(int data,
-	unsigned long hold_time)
-{
-	unsigned long temp;
-	/* The LVDS GPIO data lines are GPIOSUS[4] */
-	/* Set as Output */
-	temp = READ_MMIO_REG_TNC(IGD_PORT_LPC, RGIO);
-	temp &= ~GPIO_DATA;
-	WRITE_MMIO_REG_TNC(IGD_PORT_LPC, RGIO, temp);
-	/* Read status register */
-	temp = READ_MMIO_REG_TNC(IGD_PORT_LPC, RGLVL);
-
-	if(data){	
-		/* Set level to High */
-		temp |= GPIO_DATA;
-	} else {
-		/* Set level to low */
-		temp &= ~GPIO_DATA;
-	}
-	WRITE_MMIO_REG_TNC(IGD_PORT_LPC, RGLVL, temp);
-
-	OS_SLEEP(hold_time);
-
-#if 0
-	/* Implementation using Display GPIO
-	 * For alm, the default data value "could" be 0
-	 */
-	/*
-	 * Simplified definition for the bits
-	 * 11: GPIO data Value
-	 * 10: GPIO Data Mask
-	 * 9: GPIO Data Direction Value
-	 * 8: GPIO Data Direction Mask
-	 */
-	EMGD_WRITE32(data ? 0x500 : 0x700, EMGD_MMIO(mmio) + i2c_bus);
-	EMGD_WRITE32(data ? 0x400 : 0x600, EMGD_MMIO(mmio) + i2c_bus);
-	OS_SLEEP(hold_time);
-#endif
-}
-
-/*!
- *
- * @param clock
- * @param hold_time
- *
- * @return void
- */
-static void i2c_set_clock(int clock,
-	unsigned long hold_time)
-{
-	unsigned long temp;
-	/* The LVDS GPIO clock lines are GPIOSUS[3] */
-	/* Set as Output */
-	temp = READ_MMIO_REG_TNC(IGD_PORT_LPC, RGIO);
-	temp &= ~GPIO_CLOCK;
-	WRITE_MMIO_REG_TNC(IGD_PORT_LPC, RGIO, temp);
-	/* Read Status Register */
-	temp = READ_MMIO_REG_TNC(IGD_PORT_LPC, RGLVL);
-		
-	if(clock){
-		/* Set level to High */
-		temp |= GPIO_CLOCK;
-
-	} else {
-		/* Set level to low */
-		temp &= ~GPIO_CLOCK;
-	}
-	WRITE_MMIO_REG_TNC(IGD_PORT_LPC, RGLVL, temp);
-
-	OS_SLEEP(hold_time);
-
-#if 0
-	/*
-	 * Simplified definition for the bits
-	 * 3: GPIO Clock Value
-	 * 2: GPIO Clock Mask
-	 * 1: GPIO Clock Direction Value
-	 * 0: GPIO Clock Direction Mask
-	 */
-
-	EMGD_WRITE32(clock ? 0x5 : 0x7, EMGD_MMIO(mmio) + i2c_bus);
-	EMGD_WRITE32(clock ? 0x4 : 0x6, EMGD_MMIO(mmio) + i2c_bus);
-	OS_SLEEP(hold_time);
-#endif
-}
-
-/*!
- *
- * @param hold_time
- *
- * @return 0 on success
- * @return 1 on failure
- */
-static int i2c_start_tnc(unsigned long hold_time)
-{
-	unsigned long sc, sd;
-
-	/* set sd high */
-	i2c_set_data(1, hold_time);
-
-	/* set clock high */
-	i2c_set_clock(1, hold_time);
-
-	/* Start condition happens when sd goes high to low when sc is high */
-	i2c_get(&sc, &sd);
-
-	if( 0 == sc ) {
-		// Data must be high
-		i2c_error_recovery_tnc(hold_time);
-		return 1;
-	}
-
-	i2c_set_data(0, hold_time);
-	i2c_set_clock(0, hold_time);
-
-	return 0;
-} /* end i2c_start */
-
-/*!
- *
- * @param hold_time
- *
- * @return 0
- */
-static int i2c_stop_tnc(unsigned long hold_time)
-{
-	/* Stop condition happens when sd goes low to high when sc is high */
-	unsigned long sc,sd;
-
-	i2c_set_clock(0, hold_time);
-	i2c_set_data(0, hold_time);
-
-	i2c_set_clock(1, hold_time);
-
-	i2c_get(&sc, &sd);
-	/* Try another time */
-	if (sc == 0) {
-		i2c_set_clock(1, hold_time);
-	}
-	i2c_set_data(1, hold_time);
-
-	return 0;
-} /* end i2c_stop */
-
-/*!
- *
- * @param hold_time
- *
- * @return 0 on success
- * @return 1 on failure
- */
-static int i2c_error_recovery_tnc(unsigned long hold_time)
-{
-	unsigned char max_retries = 9;
-	unsigned long sc, sd;
-
-	while (max_retries--) {
-		i2c_get(&sc, &sd);
-		if (sd == 1 && sc == 1) {
-			return 0;
-		} else {
-			i2c_stop_tnc(hold_time);
-		}
-	}
-	EMGD_ERROR("Cannot recover I2C error.");
-
-	return 1;
-}
-
-/*!
- *
- * @param value
- * @param hold_time
- *
- * @return 0 on success
- * @return 1 on failure
- */
-static int i2c_write_byte_tnc(unsigned char value,
-	unsigned long hold_time)
-{
-	int i;
-	unsigned long sc,sd;
-
-	/* I2C_DEBUG("i2c_write_byte"); */
-	for(i=7; i>=0; i--) {
-		i2c_set_clock(0, hold_time);
-		i2c_set_data(value>>i & 1, hold_time);
-
-		i2c_set_clock(1, hold_time);
-	}
-
-	/* Get ACK */
-	i2c_set_clock(0, hold_time);
-	/* Set data low. Possible inteference in some lvds panel */
-	i2c_set_data(0, hold_time);
-	i2c_set_clock(1, hold_time);
-	OS_SLEEP(hold_time);
-
-	i2c_get(&sc, &sd);
-
-	i2c_set_clock(0, hold_time);
-
-	if (sd != 0) {
-		EMGD_ERROR("No ACK for byte 0x%x", value);
-		i2c_error_recovery_tnc(hold_time);
-		return 1;
-	}
-
-	return 0;
-
-} /* end i2c_write_byte */
-
-/*!
- *
- * @param value
- * @param ack
- * @param hold_time
- *
- * @return 0 on success
- * @return 1 on failure
- */
-static int i2c_read_byte_tnc(unsigned char *value,
-	unsigned char ack,
-	unsigned long hold_time)
-{
-	int i;
-	unsigned long sc, sd, temp;
-
-	*value = 0;
-	for(i=7; i>=0; i--) {
-		i2c_set_clock(1, hold_time);
-		i2c_get(&sc, &sd);
-		OS_SLEEP(hold_time);
-		if(!sc) {
-			EMGD_DEBUG("Clock low on read %d", i);
-			i2c_error_recovery_tnc(hold_time);
-			return 1;
-		}
-		*value |= (sd & 1)<<i;
-		i2c_set_clock(0, hold_time);
-	}
-
-	if (ack) {
-		i2c_set_data(0, hold_time);
-	}
-
-	/* Master does not ACK */
-	i2c_set_clock(1, hold_time);
-	i2c_set_clock(0, hold_time);
-
-	if (ack) {
-		/* Set data as input as we continue to read */
-		temp = READ_MMIO_REG_TNC(IGD_PORT_LPC, RGIO);
-		temp |= GPIO_DATA;
-		WRITE_MMIO_REG_TNC(IGD_PORT_LPC, RGIO, temp);
-	}
-
-	return 0;
-} /* end i2c_read_byte */
-
-/*!
- *
- * @param context
- * @param i2c_bus
- * @param i2c_speed
- * @param dab
- * @param reg
- * @param buffer
- * @param num_bytes
- *
- * @return 0 on success
- * @return 1 on failure
- */
-int i2c_read_regs_gpio(igd_context_t *context,
-	unsigned long i2c_bus,
-	unsigned long i2c_speed,
-	unsigned long dab,
-	unsigned char reg,
-	unsigned char FAR *buffer,
-	unsigned long num_bytes)
-{
-	unsigned long hold_time;
-	unsigned char temp;
-	int i;
-	if (!i2c_speed) {
-		EMGD_DEBUG("i2c Speed failed.");
-		return 1;
-	}
-
-	/*
-	 * We are holding the clock LOW for "hold_time" and then HIGH for
-	 * "hold_time". Therefore, we double the clock speed in this calculation.
-	 */
-	hold_time = 1000/(i2c_speed * 2);
-
-	/* enable_gpio_tnc(context); */
-
-	if (i2c_start_tnc(hold_time)) {
-		EMGD_DEBUG("i2c Start failed.");
-		return 1;
-	}
-
-	if (i2c_write_byte_tnc((unsigned char)dab & 0xFE,
-			hold_time)) {
-		EMGD_DEBUG("i2c DAB(W) failed.");
-		return 1;
-	}
-
-	if (i2c_write_byte_tnc(reg, hold_time)) {
-		EMGD_DEBUG("RAB failed.");
-		return 1;
-	}
-
-	if (i2c_start_tnc(hold_time)) {
-		EMGD_DEBUG("i2c ReStart failed");
-		return 1;
-	}
-
-	if (i2c_write_byte_tnc((unsigned char)dab | 0x01,
-			hold_time)) {
-		EMGD_ERROR("i2c DAB(R) failed");
-		return 1;
-	}
-
-
-	/* Read the requested number of bytes */
-	for(i=0; i<(int)(num_bytes-1); i++) {
-		/*
-		 * Use a local temp so that the FAR pointer doesn't have to
-		 * get passed down.
-		 */
-		if (i2c_read_byte_tnc(&temp, 1, hold_time)) {
-			EMGD_DEBUG("Read data byte %d failed", i);
-			EMGD_DEBUG("Exit i2c_read_regs_tnc with error");
-			return 1;
-		}
-		buffer[i] = temp;
-	}
-
-	/* No ACK on the last read */
-	if(i2c_read_byte_tnc(&temp, 0, hold_time)) {
-		EMGD_DEBUG("Read Data %d Failed", i);
-		EMGD_DEBUG("Exit i2c_read_regs_tnc with error");
-		return 1;
-	}
-	buffer[i] = temp;
-
-	i2c_stop_tnc(hold_time);
-	i2c_stop_tnc(hold_time);
-
-	return 0;
-}
-
-/*!
- *
- * @param context
- * @param i2c_bus
- * @param i2c_speed
- * @param dab
- * @param reg_list
- * @param flags
- *
- * @return 0 on success
- * @return 1 on failure
- */
-int i2c_write_reg_list_gpio(igd_context_t *context,
-	unsigned long i2c_bus,
-	unsigned long i2c_speed,
-	unsigned long dab,
-	pd_reg_t *reg_list,
-	unsigned long flags)
-{
-	unsigned long hold_time;
-
-	if (!i2c_speed) {
-		return 1;
-	}
-
-	/*
-	 * We are holding the clock LOW for "hold_time" and then HIGH for
-	 * "hold_time". Therefore, we double the clock speed in this calculation.
-	 */
-	hold_time = 1000/(i2c_speed * 2);
-
-	/* enable_gpio_tnc(context); */
-
-	while(reg_list->reg != PD_REG_LIST_END) {
-		if (i2c_start_tnc(hold_time)) {
-			EMGD_DEBUG("Start failed");
-			return 1;
-		}
-
-		if (i2c_write_byte_tnc((unsigned char)dab & 0xFE,
-				hold_time)) {
-			EMGD_DEBUG("DAB(W) failed");
-			return 1;
-		}
-
-		/* Register Address */
-		if (i2c_write_byte_tnc((unsigned char)reg_list->reg, hold_time)) {
-			EMGD_DEBUG("RAB failed");
-			return 1;
-		}
-
-		do {
-			/*  New Value */
-			if (i2c_write_byte_tnc((unsigned char)reg_list->value, hold_time)) {
-				EMGD_DEBUG("Data failed");
-				return 1;
-			}
-
-			if(reg_list[1].reg != (reg_list[0].reg + 1)) {
-				reg_list++;
-				break;
-			}
-
-			EMGD_DEBUG("I2C Multi-Write Reg[%x] = 0x%x",
-				(unsigned short)reg_list->reg,
-				(unsigned short)reg_list->value);
-			reg_list++;
-		} while(flags & IGD_I2C_SERIAL_WRITE);
-
-
-		i2c_stop_tnc(hold_time);
-		i2c_stop_tnc(hold_time);
-	}
-
-	return 0;
-}
-
-/*----------------------------------------------------------------------------
- * File Revision History
- * $Id: i2c_bitbash_tnc.c,v 1.5 2010/07/23 16:54:50 bpaauwe Exp $
- * $Source: /nfs/fm/proj/eia/cvsroot/koheo/linux/egd_drm/emgd/display/pi/tnc/i2c_bitbash_tnc.c,v $
- *----------------------------------------------------------------------------
- */