1 files changed, 0 insertions, 278 deletions
diff --git a/sys/dev/drm2/drm_dp_iic_helper.c b/sys/dev/drm2/drm_dp_iic_helper.c
deleted file mode 100644
index 35318c11c3888..0000000000000
--- a/sys/dev/drm2/drm_dp_iic_helper.c
+++ /dev/null
@@ -1,278 +0,0 @@
-/*
- * Copyright © 2009 Keith Packard
- *
- * Permission to use, copy, modify, distribute, and sell this software and its
- * documentation for any purpose is hereby granted without fee, provided that
- * the above copyright notice appear in all copies and that both that copyright
- * notice and this permission notice appear in supporting documentation, and
- * that the name of the copyright holders not be used in advertising or
- * publicity pertaining to distribution of the software without specific,
- * written prior permission.  The copyright holders make no representations
- * about the suitability of this software for any purpose.  It is provided "as
- * is" without express or implied warranty.
- *
- * THE COPYRIGHT HOLDERS DISCLAIM ALL WARRANTIES WITH REGARD TO THIS SOFTWARE,
- * INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS, IN NO
- * EVENT SHALL THE COPYRIGHT HOLDERS BE LIABLE FOR ANY SPECIAL, INDIRECT OR
- * CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE,
- * DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER
- * TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE
- * OF THIS SOFTWARE.
- */
-
-#include <sys/cdefs.h>
-__FBSDID("$FreeBSD$");
-
-#include <sys/types.h>
-#include <sys/kobj.h>
-#include <sys/bus.h>
-#include <dev/iicbus/iic.h>
-#include "iicbus_if.h"
-#include <dev/iicbus/iiconf.h>
-#include <dev/drm2/drmP.h>
-#include <dev/drm2/drm_dp_helper.h>
-
-static int
-iic_dp_aux_transaction(device_t idev, int mode, uint8_t write_byte,
-    uint8_t *read_byte)
-{
-	struct iic_dp_aux_data *aux_data;
-	int ret;
-
-	aux_data = device_get_softc(idev);
-	ret = (*aux_data->aux_ch)(idev, mode, write_byte, read_byte);
-	if (ret < 0)
-		return (ret);
-	return (0);
-}
-
-/*
- * I2C over AUX CH
- */
-
-/*
- * Send the address. If the I2C link is running, this 'restarts'
- * the connection with the new address, this is used for doing
- * a write followed by a read (as needed for DDC)
- */
-static int
-iic_dp_aux_address(device_t idev, u16 address, bool reading)
-{
-	struct iic_dp_aux_data *aux_data;
-	int mode, ret;
-
-	aux_data = device_get_softc(idev);
-	mode = MODE_I2C_START;
-	if (reading)
-		mode |= MODE_I2C_READ;
-	else
-		mode |= MODE_I2C_WRITE;
-	aux_data->address = address;
-	aux_data->running = true;
-	ret = iic_dp_aux_transaction(idev, mode, 0, NULL);
-	return (ret);
-}
-
-/*
- * Stop the I2C transaction. This closes out the link, sending
- * a bare address packet with the MOT bit turned off
- */
-static void
-iic_dp_aux_stop(device_t idev, bool reading)
-{
-	struct iic_dp_aux_data *aux_data;
-	int mode;
-
-	aux_data = device_get_softc(idev);
-	mode = MODE_I2C_STOP;
-	if (reading)
-		mode |= MODE_I2C_READ;
-	else
-		mode |= MODE_I2C_WRITE;
-	if (aux_data->running) {
-		(void)iic_dp_aux_transaction(idev, mode, 0, NULL);
-		aux_data->running = false;
-	}
-}
-
-/*
- * Write a single byte to the current I2C address, the
- * the I2C link must be running or this returns -EIO
- */
-static int
-iic_dp_aux_put_byte(device_t idev, u8 byte)
-{
-	struct iic_dp_aux_data *aux_data;
-	int ret;
-
-	aux_data = device_get_softc(idev);
-
-	if (!aux_data->running)
-		return (-EIO);
-
-	ret = iic_dp_aux_transaction(idev, MODE_I2C_WRITE, byte, NULL);
-	return (ret);
-}
-
-/*
- * Read a single byte from the current I2C address, the
- * I2C link must be running or this returns -EIO
- */
-static int
-iic_dp_aux_get_byte(device_t idev, u8 *byte_ret)
-{
-	struct iic_dp_aux_data *aux_data;
-	int ret;
-
-	aux_data = device_get_softc(idev);
-
-	if (!aux_data->running)
-		return (-EIO);
-
-	ret = iic_dp_aux_transaction(idev, MODE_I2C_READ, 0, byte_ret);
-	return (ret);
-}
-
-static int
-iic_dp_aux_xfer(device_t idev, struct iic_msg *msgs, uint32_t num)
-{
-	u8 *buf;
-	int b, m, ret;
-	u16 len;
-	bool reading;
-
-	ret = 0;
-	reading = false;
-
-	for (m = 0; m < num; m++) {
-		len = msgs[m].len;
-		buf = msgs[m].buf;
-		reading = (msgs[m].flags & IIC_M_RD) != 0;
-		ret = iic_dp_aux_address(idev, msgs[m].slave >> 1, reading);
-		if (ret < 0)
-			break;
-		if (reading) {
-			for (b = 0; b < len; b++) {
-				ret = iic_dp_aux_get_byte(idev, &buf[b]);
-				if (ret != 0)
-					break;
-			}
-		} else {
-			for (b = 0; b < len; b++) {
-				ret = iic_dp_aux_put_byte(idev, buf[b]);
-				if (ret < 0)
-					break;
-			}
-		}
-		if (ret != 0)
-			break;
-	}
-	iic_dp_aux_stop(idev, reading);
-	DRM_DEBUG_KMS("dp_aux_xfer return %d\n", ret);
-	return (-ret);
-}
-
-static void
-iic_dp_aux_reset_bus(device_t idev)
-{
-
-	(void)iic_dp_aux_address(idev, 0, false);
-	(void)iic_dp_aux_stop(idev, false);
-}
-
-static int
-iic_dp_aux_reset(device_t idev, u_char speed, u_char addr, u_char *oldaddr)
-{
-
-	iic_dp_aux_reset_bus(idev);
-	return (0);
-}
-
-static int
-iic_dp_aux_prepare_bus(device_t idev)
-{
-
-	/* adapter->retries = 3; */
-	iic_dp_aux_reset_bus(idev);
-	return (0);
-}
-
-static int
-iic_dp_aux_probe(device_t idev)
-{
-
-	return (BUS_PROBE_DEFAULT);
-}
-
-static int
-iic_dp_aux_attach(device_t idev)
-{
-	struct iic_dp_aux_data *aux_data;
-
-	aux_data = device_get_softc(idev);
-	aux_data->port = device_add_child(idev, "iicbus", -1);
-	if (aux_data->port == NULL)
-		return (ENXIO);
-	device_quiet(aux_data->port);
-	bus_generic_attach(idev);
-	return (0);
-}
-
-int
-iic_dp_aux_add_bus(device_t dev, const char *name,
-    int (*ch)(device_t idev, int mode, uint8_t write_byte, uint8_t *read_byte),
-    void *priv, device_t *bus, device_t *adapter)
-{
-	device_t ibus;
-	struct iic_dp_aux_data *data;
-	int idx, error;
-	static int dp_bus_counter;
-
-	mtx_lock(&Giant);
-
-	idx = atomic_fetchadd_int(&dp_bus_counter, 1);
-	ibus = device_add_child(dev, "drm_iic_dp_aux", idx);
-	if (ibus == NULL) {
-		mtx_unlock(&Giant);
-		DRM_ERROR("drm_iic_dp_aux bus %d creation error\n", idx);
-		return (-ENXIO);
-	}
-	device_quiet(ibus);
-	error = device_probe_and_attach(ibus);
-	if (error != 0) {
-		device_delete_child(dev, ibus);
-		mtx_unlock(&Giant);
-		DRM_ERROR("drm_iic_dp_aux bus %d attach failed, %d\n",
-		    idx, error);
-		return (-error);
-	}
-	data = device_get_softc(ibus);
-	data->running = false;
-	data->address = 0;
-	data->aux_ch = ch;
-	data->priv = priv;
-	error = iic_dp_aux_prepare_bus(ibus);
-	if (error == 0) {
-		*bus = ibus;
-		*adapter = data->port;
-	}
-	mtx_unlock(&Giant);
-	return (-error);
-}
-
-static device_method_t drm_iic_dp_aux_methods[] = {
-	DEVMETHOD(device_probe,		iic_dp_aux_probe),
-	DEVMETHOD(device_attach,	iic_dp_aux_attach),
-	DEVMETHOD(device_detach,	bus_generic_detach),
-	DEVMETHOD(iicbus_reset,		iic_dp_aux_reset),
-	DEVMETHOD(iicbus_transfer,	iic_dp_aux_xfer),
-	DEVMETHOD_END
-};
-static driver_t drm_iic_dp_aux_driver = {
-	"drm_iic_dp_aux",
-	drm_iic_dp_aux_methods,
-	sizeof(struct iic_dp_aux_data)
-};
-static devclass_t drm_iic_dp_aux_devclass;
-DRIVER_MODULE_ORDERED(drm_iic_dp_aux, drmn, drm_iic_dp_aux_driver,
-    drm_iic_dp_aux_devclass, 0, 0, SI_ORDER_SECOND);