Anxdp support for Pinebook pro WIP

mostly taken from netbsd.

Author: jsm222

bridges/anxdp/anx_dp.c

@@ -0,0 +1,249 @@
+
+/*-
+ * SPDX-License-Identifier: BSD-2-Clause
+ *
+ * Copyright (c) 2021 Jesper Schmitz Mouridsen  <[email protected]>
+ * Copyright (c) 2019 Jonathan A. Kollasch <[email protected]>
+
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ *
+ * $FreeBSD$
+ */
+
+
+#ifndef __ANXEDP_H__
+#define	__ANXEDP_H__
+#include <drm/drmP.h>
+#include <drm/drm_crtc.h>
+#undef CONFIG_DRM_DP_CEC
+#include <drm/drm_crtc_helper.h>
+#include <drm/drm_dp_helper.h>
+#include <drm/drm_edid.h>
+#include <drm/drm_dp_helper.h>
+#include <drm/drm_probe_helper.h>
+#include <drm/drm_bridge.h>
+#include <drm/drm_panel.h>
+#include <drm/drm_connector.h>
+#include <drm/drm_edid.h>
+#include <linux/bitops.h>
+#include "dev/drm/rockchip/rk_edp.h"
+#define __BITS(hi,lo)	((~((~0)<<((hi)+1)))&((~0)<<(lo)))
+#define __BIT BIT
+#define __LOWEST_SET_BIT(__mask) ((((__mask) - 1) & (__mask)) ^ (__mask))
+#define __SHIFTOUT(__x, __mask) (((__x) & (__mask)) / __LOWEST_SET_BIT(__mask))
+#define __SHIFTIN(__x, __mask) ((__x) * __LOWEST_SET_BIT(__mask))
+#define ANXDP_AUDIO 0
+#define	ANXDP_DP_TX_VERSION	0x010
+#define	ANXDP_TX_SW_RESET	0x014
+#define	 RESET_DP_TX			__BIT(0)
+#define	ANXDP_FUNC_EN_1		0x018
+#define	 MASTER_VID_FUNC_EN_N		__BIT(7)
+#define	 RK_VID_CAP_FUNC_EN_N		__BIT(6)
+#define	 SLAVE_VID_FUNC_EN_N		__BIT(5)
+#define	 RK_VID_FIFO_FUNC_EN_N		__BIT(5)
+#define	 AUD_FIFO_FUNC_EN_N		__BIT(4)
+#define	 AUD_FUNC_EN_N			__BIT(3)
+#define	 HDCP_FUNC_EN_N			__BIT(2)
+#define	 CRC_FUNC_EN_N			__BIT(1)
+#define	 SW_FUNC_EN_N			__BIT(0)
+#define	ANXDP_FUNC_EN_2		0x01c
+#define	 SSC_FUNC_EN_N			__BIT(7)
+#define	 AUX_FUNC_EN_N			__BIT(2)
+#define	 SERDES_FIFO_FUNC_EN_N		__BIT(1)
+#define	 LS_CLK_DOMAIN_FUNC_EN_N	__BIT(0)
+#define	ANXDP_VIDEO_CTL_1	0x020
+#define	 VIDEO_EN			__BIT(7)
+#define	 VIDEO_MUTE			__BIT(6)
+#define	ANXDP_VIDEO_CTL_2	0x024
+#define	ANXDP_VIDEO_CTL_3	0x028
+#define	ANXDP_VIDEO_CTL_4	0x02c
+#define	ANXDP_VIDEO_CTL_8	0x03c
+#define	ANXDP_VIDEO_CTL_10	0x044
+#define	 F_SEL				__BIT(4)
+#define	 SLAVE_I_SCAN_CFG		__BIT(2)
+#define	 SLAVE_VSYNC_P_CFG		__BIT(1)
+#define	 SLAVE_HSYNC_P_CFG		__BIT(0)
+#define	ANXDP_PLL_REG_1		0x0fc
+#define	 REF_CLK_24M			__BIT(0)
+#define	RKANXDP_PD		0x12c
+#define	 DP_INC_BG			__BIT(7)
+#define	 DP_EXP_PD			__BIT(6)
+#define	 DP_PHY_PD			__BIT(5)
+#define	 RK_AUX_PD			__BIT(5)
+#define	 AUX_PD				__BIT(4)
+#define	 RK_PLL_PD			__BIT(4)
+#define	 CHx_PD(x)			__BIT(x)	/* 0<=x<=3 */
+#define  DP_ALL_PD			__BITS(7,0)
+#define	ANXDP_LANE_MAP		0x35c
+#define ANXDP_ANALOG_CTL_1	0x370
+#define	 TX_TERMINAL_CTRL_50_OHM	__BIT(4)
+#define ANXDP_ANALOG_CTL_2	0x374
+#define	 SEL_24M			__BIT(3)
+#define	 TX_DVDD_BIT_1_0625V		0x4
+#define ANXDP_ANALOG_CTL_3	0x378
+#define	 DRIVE_DVDD_BIT_1_0625V		(0x4 << 5)
+#define	 VCO_BIT_600_MICRO		(0x5 << 0)
+#define ANXDP_PLL_FILTER_CTL_1	0x37c
+#define	 PD_RING_OSC			__BIT(6)
+#define	 AUX_TERMINAL_CTRL_50_OHM	(2 << 4)
+#define	 TX_CUR1_2X			__BIT(2)
+#define	 TX_CUR_16_MA			3
+#define ANXDP_TX_AMP_TUNING_CTL	0x380
+#define	ANXDP_AUX_HW_RETRY_CTL	0x390
+#define	 AUX_BIT_PERIOD_EXPECTED_DELAY(x) __SHIFTIN((x), __BITS(10,8))
+#define	 AUX_HW_RETRY_INTERVAL_600_US	__SHIFTIN(0, __BITS(4,3))
+#define	 AUX_HW_RETRY_INTERVAL_800_US	__SHIFTIN(1, __BITS(4,3))
+#define	 AUX_HW_RETRY_INTERVAL_1000_US	__SHIFTIN(2, __BITS(4,3))
+#define	 AUX_HW_RETRY_INTERVAL_1800_US	__SHIFTIN(3, __BITS(4,3))
+#define	 AUX_HW_RETRY_COUNT_SEL(x)	__SHIFTIN((x), __BITS(2,0))
+#define	ANXDP_COMMON_INT_STA_1	0x3c4
+#define	 PLL_LOCK_CHG			__BIT(6)
+#define	ANXDP_COMMON_INT_STA_2	0x3c8
+#define	ANXDP_COMMON_INT_STA_3	0x3cc
+#define	ANXDP_COMMON_INT_STA_4	0x3d0
+#define	ANXDP_DP_INT_STA	0x3dc
+#define	 INT_HPD			__BIT(6)
+#define	 HW_TRAINING_FINISH		__BIT(5)
+#define	 RPLY_RECEIV			__BIT(1)
+#define	 AUX_ERR			__BIT(0)
+#define	ANXDP_SYS_CTL_1		0x600
+#define	 DET_STA			__BIT(2)
+#define	 FORCE_DET			__BIT(1)
+#define	 DET_CTRL			__BIT(0)
+#define	ANXDP_SYS_CTL_2		0x604
+#define	ANXDP_SYS_CTL_3		0x608
+#define	 HPD_STATUS			__BIT(6)
+#define	 F_HPD				__BIT(5)
+#define	 HPD_CTRL			__BIT(4)
+#define	 HDCP_RDY			__BIT(3)
+#define	 STRM_VALID			__BIT(2)
+#define	 F_VALID			__BIT(1)
+#define	 VALID_CTRL			__BIT(0)
+#define	ANXDP_SYS_CTL_4		0x60c
+#define	ANXDP_PKT_SEND_CTL	0x640
+#define	ANXDP_HDCP_CTL		0x648
+#define	ANXDP_LINK_BW_SET	0x680
+#define	ANXDP_LANE_COUNT_SET	0x684
+#define	ANXDP_TRAINING_PTN_SET	0x688
+#define	 SCRAMBLING_DISABLE		__BIT(5)
+#define	 SW_TRAINING_PATTERN_SET_PTN2	__SHIFTIN(2, __BITS(1,0))
+#define	 SW_TRAINING_PATTERN_SET_PTN1	__SHIFTIN(1, __BITS(1,0))
+#define	ANXDP_LNx_LINK_TRAINING_CTL(x) (0x68c + 4 * (x)) /* 0 <= x <= 3 */
+#define	 MAX_PRE_REACH			__BIT(5)
+#define  PRE_EMPHASIS_SET(x)		__SHIFTIN((x), __BITS(4,3))
+#define	 MAX_DRIVE_REACH		__BIT(2)
+#define  DRIVE_CURRENT_SET(x)		__SHIFTIN((x), __BITS(1,0))
+#define	ANXDP_DEBUG_CTL		0x6c0
+#define	 PLL_LOCK			__BIT(4)
+#define	 F_PLL_LOCK			__BIT(3)
+#define	 PLL_LOCK_CTRL			__BIT(2)
+#define	 PN_INV				__BIT(0)
+#define	ANXDP_LINK_DEBUG_CTL	0x6e0
+#define	ANXDP_PLL_CTL		0x71c
+#define	ANXDP_PHY_PD		0x720
+#define	ANXDP_PHY_TEST		0x724
+#define	 MACRO_RST			__BIT(5)
+#define ANXDP_M_AUD_GEN_FILTER_TH 0x778
+#define	ANXDP_AUX_CH_STA	0x780
+#define	 AUX_BUSY			__BIT(4)
+#define	 AUX_STATUS(x)			__SHIFTOUT((x), __BITS(3,0))
+#define	ANXDP_AUX_ERR_NUM	0x784
+#define	ANXDP_AUX_CH_DEFER_CTL	0x788
+#define	 DEFER_CTRL_EN			__BIT(7)
+#define	 DEFER_COUNT(x)			__SHIFTIN((x), __BITS(6,0))
+#define	ANXDP_AUX_RX_COMM	0x78c
+#define	 AUX_RX_COMM_I2C_DEFER		__BIT(3)
+#define	 AUX_RX_COMM_AUX_DEFER		__BIT(1)
+#define	ANXDP_BUFFER_DATA_CTL	0x790
+#define	 BUF_CLR			__BIT(7)
+#define	 BUF_DATA_COUNT(x)		__SHIFTIN((x), __BITS(4,0))
+#define	ANXDP_AUX_CH_CTL_1	0x794
+#define	 AUX_LENGTH(x)			__SHIFTIN((x) - 1, __BITS(7,4))
+#define AUX_TX_COMM_I2C_TRANSACTION		(0x0 << 3)
+
+#define	 AUX_TX_COMM(x)			__SHIFTOUT(x, __BITS(3,0))
+#define	 AUX_TX_COMM_DP			__BIT(3)
+#define	 AUX_TX_COMM_MOT		__BIT(2)
+#define	 AUX_TX_COMM_READ		__BIT(0)
+#define	ANXDP_AUX_ADDR_7_0	0x798
+#define	 AUX_ADDR_7_0(x)	 (((x) >> 0) & 0xff)
+#define	ANXDP_AUX_ADDR_15_8	0x79c
+#define	 AUX_ADDR_15_8(x)	 (((x) >> 8) & 0xff)
+#define	ANXDP_AUX_ADDR_19_16	0x7a0
+#define	 AUX_ADDR_19_16(x)	 (((x) >> 16) & 0xf)
+#define	ANXDP_AUX_CH_CTL_2	0x7a4
+#define	 ADDR_ONLY			__BIT(1)
+#define	 AUX_EN				__BIT(0)
+#define	ANXDP_BUF_DATA(x)	(0x7c0 + 4 * (x))
+#define	ANXDP_SOC_GENERAL_CTL	0x800
+#define	 AUDIO_MODE_SPDIF_MODE		__BIT(8)
+#define	 VIDEO_MODE_SLAVE_MODE		__BIT(1)
+#define	ANXDP_CRC_CON		0x890
+#define	ANXDP_PLL_REG_2		0x9e4
+#define	ANXDP_PLL_REG_3		0x9e8
+#define	ANXDP_PLL_REG_4		0x9ec
+#define	ANXDP_PLL_REG_5		0xa00
+
+
+
+struct rk_edp_softc;
+
+struct anxdp_softc {
+  struct mtx mtx;
+  device_t		iicbus;
+  struct device*	sc_dev;
+
+  struct resource *res[2];
+  u_int			sc_flags;
+#define	ANXDP_FLAG_ROCKCHIP	__BIT(0)
+struct drm_connector 	sc_connector;
+  struct drm_encoder    sc_encoder;
+struct drm_dp_aux       sc_dpaux;
+struct drm_panel *	sc_panel;
+uint8_t			sc_dpcd[DP_RECEIVER_CAP_SIZE];
+  struct drm_bridge	sc_bridge;
+  struct drm_display_mode	sc_curmode;
+};
+struct rk_edp_softc {
+  struct anxdp_softc  sc_base;
+  device_t dev;
+  struct syscon *grf;
+  clk_t pclk;
+  clk_t dpclk;
+  clk_t grfclk;
+
+
+};
+#define	ANXDP_LOCK(sc)		mtx_lock(&(sc)->mtx)
+#define	ANXDP_UNLOCK(sc)	mtx_unlock(&(sc)->mtx)
+#define	ANXDP_WRITE(sc, reg, val) bus_write_4((sc)->res[0], (reg), (val))
+#define	ANXDP_READ(sc, reg) bus_read_4((sc)->res[0], (reg))
+
+#define	to_edp_connector(x)	container_of(x, struct anxdp_connector, base)
+int anxdp_attach(struct anxdp_softc *sc);
+int anxdp_bind(struct anxdp_softc *sc,struct drm_encoder *encoder);
+void anxdp_init_aux(struct anxdp_softc * sc);
+void anxdp_add_bridge(struct anxdp_softc *sc,struct drm_encoder *encoder);
+
+DECLARE_CLASS(anxdp_driver);
+#endif /* ANXEDP_H */
+

bridges/anxdp/anx_dp.h

@@ -678,11 +678,11 @@ static int drm_dp_i2c_do_msg(struct drm_dp_aux *aux, struct drm_dp_aux_msg *msg)
 			 * communicate with a non-existant DisplayPort device).
 			 * Avoid spamming the kernel log with timeout errors.
 			 */
-			if (ret == -ETIMEDOUT)
+			if (ret == -ETIMEDOUT) {
 				DRM_DEBUG_KMS_RATELIMITED("transaction timed out\n");
-			else
+			} else {
 				DRM_DEBUG_KMS("transaction failed: %d\n", ret);
-
+			}
 			return ret;
 		}
 
@@ -899,13 +899,13 @@ static void unlock_bus(struct i2c_adapter *i2c, unsigned int flags)
 {
 	mutex_unlock(&i2c_to_aux(i2c)->hw_mutex);
 }
-
+#ifndef __FreeBSD__
 static const struct i2c_lock_operations drm_dp_i2c_lock_ops = {
 	.lock_bus = lock_bus,
 	.trylock_bus = trylock_bus,
 	.unlock_bus = unlock_bus,
 };
-
+#endif
 static int drm_dp_aux_get_crc(struct drm_dp_aux *aux, u8 *crc)
 {
 	u8 buf, count;
@@ -1009,8 +1009,9 @@ void drm_dp_aux_init(struct drm_dp_aux *aux)
 	aux->ddc.algo = &drm_dp_i2c_algo;
 	aux->ddc.algo_data = aux;
 	aux->ddc.retries = 3;
-
+#ifndef __FreeBSD__
 	aux->ddc.lock_ops = &drm_dp_i2c_lock_ops;
+#endif
 }
 EXPORT_SYMBOL(drm_dp_aux_init);
 

core/drm_dp_helper.c

@@ -27,7 +27,7 @@
 #include <linux/kernel.h>
 #include <linux/sched.h>
 #include <linux/seq_file.h>
-
+#define CONFIG_DRM_DEBUG_DP_MST_TOPOLOGY_REFS 0
 #if IS_ENABLED(CONFIG_DRM_DEBUG_DP_MST_TOPOLOGY_REFS)
 #include <linux/stacktrace.h>
 #include <linux/sort.h>
@@ -2130,9 +2130,10 @@ static void build_mst_prop_path(const struct drm_dp_mst_branch *mstb,
 int drm_dp_mst_connector_late_register(struct drm_connector *connector,
 				       struct drm_dp_mst_port *port)
 {
+#ifndef __FreeBSD__
 	DRM_DEBUG_KMS("registering %s remote bus for %s\n",
 		      port->aux.name, connector->kdev->kobj.name);
-
+#endif
 	port->aux.dev = connector->kdev;
 	return drm_dp_aux_register_devnode(&port->aux);
 }
@@ -2150,8 +2151,10 @@ EXPORT_SYMBOL(drm_dp_mst_connector_late_register);
 void drm_dp_mst_connector_early_unregister(struct drm_connector *connector,
 					   struct drm_dp_mst_port *port)
 {
+#ifndef __FreeBSD__
 	DRM_DEBUG_KMS("unregistering %s remote bus for %s\n",
 		      port->aux.name, connector->kdev->kobj.name);
+#endif
 	drm_dp_aux_unregister_devnode(&port->aux);
 }
 EXPORT_SYMBOL(drm_dp_mst_connector_early_unregister);
@@ -5377,8 +5380,9 @@ static int drm_dp_mst_register_i2c_bus(struct drm_dp_aux *aux)
 	aux->ddc.class = I2C_CLASS_DDC;
 	aux->ddc.owner = THIS_MODULE;
 	aux->ddc.dev.parent = aux->dev;
+#ifndef __FreeBSD__
 	aux->ddc.dev.of_node = aux->dev->of_node;
-
+#endif
 	strlcpy(aux->ddc.name, aux->name ? aux->name : dev_name(aux->dev),
 		sizeof(aux->ddc.name));
 

core/drm_dp_mst_topology.c

@@ -22,7 +22,8 @@
 
 #ifndef _DRM_DP_HELPER_H_
 #define _DRM_DP_HELPER_H_
-
+#include <linux/mutex.h>
+#include <linux/workqueue.h>
 #include <linux/delay.h>
 #include <linux/i2c.h>
 #include <linux/types.h>

core/include/drm/drm_dp_helper.h

@@ -22,10 +22,10 @@
 #ifndef _DRM_DP_MST_HELPER_H_
 #define _DRM_DP_MST_HELPER_H_
 
-#include <linux/types.h>
+#include <sys/types.h>
 #include <drm/drm_dp_helper.h>
 #include <drm/drm_atomic.h>
-
+#define CONFIG_DRM_DEBUG_DP_MST_TOPOLOGY_REFS 0
 #if IS_ENABLED(CONFIG_DRM_DEBUG_DP_MST_TOPOLOGY_REFS)
 #include <linux/stackdepot.h>
 #include <linux/timekeeping.h>

core/include/drm/drm_dp_mst_helper.h

@@ -351,14 +351,8 @@ void drm_dev_dbg(const struct device *dev, enum drm_debug_category category,
  * @fmt: printf() like format string.
  */
 #define DRM_DEV_ERROR_RATELIMITED(dev, fmt, ...)			\
-({									\
-	static DEFINE_RATELIMIT_STATE(_rs,				\
-				      DEFAULT_RATELIMIT_INTERVAL,	\
-				      DEFAULT_RATELIMIT_BURST);		\
-									\
-	if (__ratelimit(&_rs))						\
-		DRM_DEV_ERROR(dev, fmt, ##__VA_ARGS__);			\
-})
+		DRM_DEV_ERROR(dev, fmt, ##__VA_ARGS__);
+
 
 #define DRM_DEV_INFO(dev, fmt, ...)				\
 	drm_dev_printk(dev, KERN_INFO, fmt, ##__VA_ARGS__)
@@ -394,13 +388,8 @@ void drm_dev_dbg(const struct device *dev, enum drm_debug_category category,
 	drm_dev_dbg(dev, DRM_UT_DP, fmt, ## __VA_ARGS__)
 
 #define _DRM_DEV_DEFINE_DEBUG_RATELIMITED(dev, category, fmt, ...)	\
-({									\
-	static DEFINE_RATELIMIT_STATE(_rs,				\
-				      DEFAULT_RATELIMIT_INTERVAL,	\
-				      DEFAULT_RATELIMIT_BURST);		\
-	if (__ratelimit(&_rs))						\
-		drm_dev_dbg(dev, category, fmt, ##__VA_ARGS__);		\
-})
+		drm_dev_dbg(dev, category, fmt, ##__VA_ARGS__);
+
 
 /**
  * Rate limited debug output. Like DRM_DEBUG() but won't flood the log.