Remove hdcp 1.x support from dpu driver.
The hdcp 1.x support will be posted back with
display port driver.
Signed-off-by: Rajesh Yadav <rya...@codeaurora.org>
---
drivers/gpu/drm/msm/dpu_hdcp.h | 74 --
drivers/gpu/drm/msm/dpu_hdcp_1x.c | 1579 -------------------------------------
2 files changed, 1653 deletions(-)
delete mode 100644 drivers/gpu/drm/msm/dpu_hdcp.h
delete mode 100644 drivers/gpu/drm/msm/dpu_hdcp_1x.c
diff --git a/drivers/gpu/drm/msm/dpu_hdcp.h b/drivers/gpu/drm/msm/dpu_hdcp.h
deleted file mode 100644
index 63a98ca..0000000
--- a/drivers/gpu/drm/msm/dpu_hdcp.h
+++ /dev/null
@@ -1,74 +0,0 @@
-/* Copyright (c) 2012, 2014-2018, The Linux Foundation. All rights reserved.
- *
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License version 2 and
- * only version 2 as published by the Free Software Foundation.
- *
- * 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.
- */
-
-#ifndef __DPU_HDCP_H__
-#define __DPU_HDCP_H__
-
-#include <soc/qcom/scm.h>
-#include <linux/types.h>
-#include <linux/bitops.h>
-#include <linux/debugfs.h>
-#include <linux/of_device.h>
-#include <linux/i2c.h>
-#include <drm/drmP.h>
-#include <drm/drm_crtc.h>
-#include <drm/drm_edid.h>
-#include "dpu_kms.h"
-
-enum dpu_hdcp_client_id {
- HDCP_CLIENT_HDMI,
- HDCP_CLIENT_DP,
-};
-
-enum dpu_hdcp_states {
- HDCP_STATE_INACTIVE,
- HDCP_STATE_AUTHENTICATING,
- HDCP_STATE_AUTHENTICATED,
- HDCP_STATE_AUTH_FAIL,
- HDCP_STATE_AUTH_ENC_NONE,
- HDCP_STATE_AUTH_ENC_1X,
- HDCP_STATE_AUTH_ENC_2P2
-};
-
-struct dpu_hdcp_init_data {
- struct dss_io_data *core_io;
- struct dss_io_data *qfprom_io;
- struct dss_io_data *hdcp_io;
- struct drm_dp_aux *drm_aux;
- struct mutex *mutex;
- struct workqueue_struct *workq;
- void *cb_data;
- void (*notify_status)(void *cb_data, enum dpu_hdcp_states status);
- u8 sink_rx_status;
- unsigned char *revision;
- u32 phy_addr;
- bool sec_access;
- enum dpu_hdcp_client_id client_id;
-};
-
-struct dpu_hdcp_ops {
- int (*isr)(void *ptr);
- int (*cp_irq)(void *ptr);
- int (*reauthenticate)(void *input);
- int (*authenticate)(void *hdcp_ctrl);
- bool (*feature_supported)(void *input);
- void (*off)(void *hdcp_ctrl);
-};
-
-void *dpu_hdcp_1x_init(struct dpu_hdcp_init_data *init_data);
-void dpu_hdcp_1x_deinit(void *input);
-struct dpu_hdcp_ops *dpu_hdcp_1x_start(void *input);
-void *dpu_dp_hdcp2p2_init(struct dpu_hdcp_init_data *init_data);
-void dpu_dp_hdcp2p2_deinit(void *input);
-const char *dpu_hdcp_state_name(enum dpu_hdcp_states hdcp_state);
-struct dpu_hdcp_ops *dpu_dp_hdcp2p2_start(void *input);
-#endif /* __DPU_HDCP_H__ */
diff --git a/drivers/gpu/drm/msm/dpu_hdcp_1x.c
b/drivers/gpu/drm/msm/dpu_hdcp_1x.c
deleted file mode 100644
index ebbd591..0000000
--- a/drivers/gpu/drm/msm/dpu_hdcp_1x.c
+++ /dev/null
@@ -1,1579 +0,0 @@
-/* Copyright (c) 2010-2018, The Linux Foundation. All rights reserved.
- *
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License version 2 and
- * only version 2 as published by the Free Software Foundation.
- *
- * 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.
- */
-
-#define pr_fmt(fmt) "[dpu-hdcp1x] %s: " fmt, __func__
-
-#include <linux/io.h>
-#include <linux/types.h>
-#include <linux/delay.h>
-#include <linux/slab.h>
-#include <linux/stat.h>
-#include <linux/iopoll.h>
-#include <linux/hdcp_qseecom.h>
-#include <drm/drm_dp_helper.h>
-#include "dpu_hdcp.h"
-#include "hdmi.xml.h"
-#include "video/msm_hdmi_hdcp_mgr.h"
-#include "dp/dp_reg.h"
-
-#define DPU_HDCP_STATE_NAME (dpu_hdcp_state_name(hdcp->hdcp_state))
-
-/* QFPROM Registers for HDMI/HDCP */
-#define QFPROM_RAW_FEAT_CONFIG_ROW0_LSB (0x000000F8)
-#define QFPROM_RAW_FEAT_CONFIG_ROW0_MSB (0x000000FC)
-#define QFPROM_RAW_VERSION_4 (0x000000A8)
-#define SEC_CTRL_HW_VERSION (0x00006000)
-#define HDCP_KSV_LSB (0x000060D8)
-#define HDCP_KSV_MSB (0x000060DC)
-#define HDCP_KSV_VERSION_4_OFFSET (0x00000014)
-
-/* SEC_CTRL version that supports HDCP SEL */
-#define HDCP_SEL_MIN_SEC_VERSION (0x50010000)
-
-/* HDCP Keys state based on HDMI_HDCP_LINK0_STATUS:KEYS_STATE */
-#define HDCP_KEYS_STATE_NO_KEYS 0
-#define HDCP_KEYS_STATE_NOT_CHECKED 1
-#define HDCP_KEYS_STATE_CHECKING 2
-#define HDCP_KEYS_STATE_VALID 3
-#define HDCP_KEYS_STATE_AKSV_NOT_VALID 4
-#define HDCP_KEYS_STATE_CHKSUM_MISMATCH 5
-#define HDCP_KEYS_STATE_PROD_AKSV 6
-#define HDCP_KEYS_STATE_RESERVED 7
-
-#define TZ_HDCP_CMD_ID 0x00004401
-
-#define HDCP_INT_CLR (isr->auth_success_ack | isr->auth_fail_ack | \
- isr->auth_fail_info_ack | isr->tx_req_ack | \
- isr->encryption_ready_ack | \
- isr->encryption_not_ready_ack | isr->tx_req_done_ack)
-
-#define HDCP_INT_EN (isr->auth_success_mask | isr->auth_fail_mask | \
- isr->encryption_ready_mask | \
- isr->encryption_not_ready_mask)
-
-#define HDCP_POLL_SLEEP_US (20 * 1000)
-#define HDCP_POLL_TIMEOUT_US (HDCP_POLL_SLEEP_US * 100)
-
-#define dpu_hdcp_1x_state(x) (hdcp->hdcp_state == x)
-
-struct dpu_hdcp_sink_addr {
- char *name;
- u32 addr;
- u32 len;
-};
-
-struct dpu_hdcp_1x_reg_data {
- u32 reg_id;
- struct dpu_hdcp_sink_addr *sink;
-};
-
-struct dpu_hdcp_sink_addr_map {
- /* addresses to read from sink */
- struct dpu_hdcp_sink_addr bcaps;
- struct dpu_hdcp_sink_addr bksv;
- struct dpu_hdcp_sink_addr r0;
- struct dpu_hdcp_sink_addr bstatus;
- struct dpu_hdcp_sink_addr cp_irq_status;
- struct dpu_hdcp_sink_addr ksv_fifo;
- struct dpu_hdcp_sink_addr v_h0;
- struct dpu_hdcp_sink_addr v_h1;
- struct dpu_hdcp_sink_addr v_h2;
- struct dpu_hdcp_sink_addr v_h3;
- struct dpu_hdcp_sink_addr v_h4;
-
- /* addresses to write to sink */
- struct dpu_hdcp_sink_addr an;
- struct dpu_hdcp_sink_addr aksv;
- struct dpu_hdcp_sink_addr ainfo;
-};
-
-struct dpu_hdcp_int_set {
- /* interrupt register */
- u32 int_reg;
-
- /* interrupt enable/disable masks */
- u32 auth_success_mask;
- u32 auth_fail_mask;
- u32 encryption_ready_mask;
- u32 encryption_not_ready_mask;
- u32 tx_req_mask;
- u32 tx_req_done_mask;
-
- /* interrupt acknowledgment */
- u32 auth_success_ack;
- u32 auth_fail_ack;
- u32 auth_fail_info_ack;
- u32 encryption_ready_ack;
- u32 encryption_not_ready_ack;
- u32 tx_req_ack;
- u32 tx_req_done_ack;
-
- /* interrupt status */
- u32 auth_success_int;
- u32 auth_fail_int;
- u32 encryption_ready;
- u32 encryption_not_ready;
- u32 tx_req_int;
- u32 tx_req_done_int;
-};
-
-struct dpu_hdcp_reg_set {
- u32 status;
- u32 keys_offset;
- u32 r0_offset;
- u32 v_offset;
- u32 ctrl;
- u32 aksv_lsb;
- u32 aksv_msb;
- u32 entropy_ctrl0;
- u32 entropy_ctrl1;
- u32 sec_sha_ctrl;
- u32 sec_sha_data;
- u32 sha_status;
-
- u32 data2_0;
- u32 data3;
- u32 data4;
- u32 data5;
- u32 data6;
-
- u32 sec_data0;
- u32 sec_data1;
- u32 sec_data7;
- u32 sec_data8;
- u32 sec_data9;
- u32 sec_data10;
- u32 sec_data11;
- u32 sec_data12;
-
- u32 reset;
- u32 reset_bit;
-
- u32 repeater;
-};
-
-#define HDCP_REG_SET_CLIENT_HDMI \
- {0}
-
-#define HDCP_REG_SET_CLIENT_DP \
-{DP_HDCP_STATUS, 16, 14, 13, DP_HDCP_CTRL, \
- DP_HDCP_SW_LOWER_AKSV, DP_HDCP_SW_UPPER_AKSV, \
- DP_HDCP_ENTROPY_CTRL0, DP_HDCP_ENTROPY_CTRL1, \
- HDCP_SEC_DP_TZ_HV_HLOS_HDCP_SHA_CTRL, \
- HDCP_SEC_DP_TZ_HV_HLOS_HDCP_SHA_DATA, \
- DP_HDCP_SHA_STATUS, DP_HDCP_RCVPORT_DATA2_0, \
- DP_HDCP_RCVPORT_DATA3, DP_HDCP_RCVPORT_DATA4, \
- DP_HDCP_RCVPORT_DATA5, DP_HDCP_RCVPORT_DATA6, \
- HDCP_SEC_DP_TZ_HV_HLOS_HDCP_RCVPORT_DATA0, \
- HDCP_SEC_DP_TZ_HV_HLOS_HDCP_RCVPORT_DATA1, \
- HDCP_SEC_DP_TZ_HV_HLOS_HDCP_RCVPORT_DATA7, \
- HDCP_SEC_DP_TZ_HV_HLOS_HDCP_RCVPORT_DATA8, \
- HDCP_SEC_DP_TZ_HV_HLOS_HDCP_RCVPORT_DATA9, \
- HDCP_SEC_DP_TZ_HV_HLOS_HDCP_RCVPORT_DATA10, \
- HDCP_SEC_DP_TZ_HV_HLOS_HDCP_RCVPORT_DATA11, \
- HDCP_SEC_DP_TZ_HV_HLOS_HDCP_RCVPORT_DATA12, \
- DP_SW_RESET, BIT(1), BIT(1)}
-
-#define HDCP_HDMI_SINK_ADDR_MAP \
- {{"bcaps", 0x40, 1}, {"bksv", 0x00, 5}, {"r0'", 0x08, 2}, \
- {"bstatus", 0x41, 2}, {"??", 0x0, 0}, {"ksv-fifo", 0x43, 0}, \
- {"v_h0", 0x20, 4}, {"v_h1", 0x24, 4}, {"v_h2", 0x28, 4}, \
- {"v_h3", 0x2c, 4}, {"v_h4", 0x30, 4}, {"an", 0x18, 8}, \
- {"aksv", 0x10, 5}, {"ainfo", 0x00, 0},}
-
-#define HDCP_DP_SINK_ADDR_MAP \
- {{"bcaps", 0x68028, 1}, {"bksv", 0x68000, 5}, {"r0'", 0x68005, 2}, \
- {"binfo", 0x6802A, 2}, {"cp_irq_status", 0x68029, 1}, \
- {"ksv-fifo", 0x6802C, 0}, {"v_h0", 0x68014, 4}, {"v_h1", 0x68018, 4}, \
- {"v_h2", 0x6801C, 4}, {"v_h3", 0x68020, 4}, {"v_h4", 0x68024, 4}, \
- {"an", 0x6800C, 8}, {"aksv", 0x68007, 5}, {"ainfo", 0x6803B, 1} }
-
-#define HDCP_HDMI_INT_SET \
- {0}
-
-#define HDCP_DP_INT_SET \
- {DP_INTR_STATUS2, \
- BIT(17), BIT(20), BIT(24), BIT(27), 0, 0, \
- BIT(16), BIT(19), BIT(21), BIT(23), BIT(26), 0, 0, \
- BIT(15), BIT(18), BIT(22), BIT(25), 0, 0}
-
-struct dpu_hdcp_1x {
- u8 bcaps;
- u32 tp_msgid;
- u32 an_0, an_1, aksv_0, aksv_1;
- bool sink_r0_ready;
- bool reauth;
- bool ksv_ready;
- enum dpu_hdcp_states hdcp_state;
- struct HDCP_V2V1_MSG_TOPOLOGY cached_tp;
- struct HDCP_V2V1_MSG_TOPOLOGY current_tp;
- struct delayed_work hdcp_auth_work;
- struct completion r0_checked;
- struct completion sink_r0_available;
- struct dpu_hdcp_init_data init_data;
- struct dpu_hdcp_ops *ops;
- struct dpu_hdcp_reg_set reg_set;
- struct dpu_hdcp_int_set int_set;
- struct dpu_hdcp_sink_addr_map sink_addr;
- struct workqueue_struct *workq;
-};
-
-const char *dpu_hdcp_state_name(enum dpu_hdcp_states hdcp_state)
-{
- switch (hdcp_state) {
- case HDCP_STATE_INACTIVE: return "HDCP_STATE_INACTIVE";
- case HDCP_STATE_AUTHENTICATING: return "HDCP_STATE_AUTHENTICATING";
- case HDCP_STATE_AUTHENTICATED: return "HDCP_STATE_AUTHENTICATED";
- case HDCP_STATE_AUTH_FAIL: return "HDCP_STATE_AUTH_FAIL";
- default: return "???";
- }
-}
-
-static int dpu_hdcp_1x_count_one(u8 *array, u8 len)
-{
- int i, j, count = 0;
-
- for (i = 0; i < len; i++)
- for (j = 0; j < 8; j++)
- count += (((array[i] >> j) & 0x1) ? 1 : 0);
- return count;
-}
-
-static int dpu_hdcp_1x_load_keys(void *input)
-{
- int rc = 0;
- bool use_sw_keys = false;
- u32 reg_val;
- u32 ksv_lsb_addr, ksv_msb_addr;
- u32 aksv_lsb, aksv_msb;
- u8 aksv[5];
- struct dss_io_data *io;
- struct dss_io_data *qfprom_io;
- struct dpu_hdcp_1x *hdcp = input;
- struct dpu_hdcp_reg_set *reg_set;
-
- if (!hdcp || !hdcp->init_data.core_io ||
- !hdcp->init_data.qfprom_io) {
- pr_err("invalid input\n");
- rc = -EINVAL;
- goto end;
- }
-
- if (!dpu_hdcp_1x_state(HDCP_STATE_INACTIVE) &&
- !dpu_hdcp_1x_state(HDCP_STATE_AUTH_FAIL)) {
- pr_err("%s: invalid state. returning\n",
- DPU_HDCP_STATE_NAME);
- rc = -EINVAL;
- goto end;
- }
-
- io = hdcp->init_data.core_io;
- qfprom_io = hdcp->init_data.qfprom_io;
- reg_set = &hdcp->reg_set;
-
- /* On compatible hardware, use SW keys */
- reg_val = DSS_REG_R(qfprom_io, SEC_CTRL_HW_VERSION);
- if (reg_val >= HDCP_SEL_MIN_SEC_VERSION) {
- reg_val = DSS_REG_R(qfprom_io,
- QFPROM_RAW_FEAT_CONFIG_ROW0_MSB +
- QFPROM_RAW_VERSION_4);
-
- if (!(reg_val & BIT(23)))
- use_sw_keys = true;
- }
-
- if (use_sw_keys) {
- if (hdcp1_set_keys(&aksv_msb, &aksv_lsb)) {
- pr_err("setting hdcp SW keys failed\n");
- rc = -EINVAL;
- goto end;
- }
- } else {
- /* Fetch aksv from QFPROM, this info should be public. */
- ksv_lsb_addr = HDCP_KSV_LSB;
- ksv_msb_addr = HDCP_KSV_MSB;
-
- if (hdcp->init_data.sec_access) {
- ksv_lsb_addr += HDCP_KSV_VERSION_4_OFFSET;
- ksv_msb_addr += HDCP_KSV_VERSION_4_OFFSET;
- }
-
- aksv_lsb = DSS_REG_R(qfprom_io, ksv_lsb_addr);
- aksv_msb = DSS_REG_R(qfprom_io, ksv_msb_addr);
- }
-
- pr_debug("%s: AKSV=%02x%08x\n", DPU_HDCP_STATE_NAME,
- aksv_msb, aksv_lsb);
-
- aksv[0] = aksv_lsb & 0xFF;
- aksv[1] = (aksv_lsb >> 8) & 0xFF;
- aksv[2] = (aksv_lsb >> 16) & 0xFF;
- aksv[3] = (aksv_lsb >> 24) & 0xFF;
- aksv[4] = aksv_msb & 0xFF;
-
- /* check there are 20 ones in AKSV */
- if (dpu_hdcp_1x_count_one(aksv, 5) != 20) {
- pr_err("AKSV bit count failed\n");
- rc = -EINVAL;
- goto end;
- }
-
- DSS_REG_W(io, reg_set->aksv_lsb, aksv_lsb);
- DSS_REG_W(io, reg_set->aksv_msb, aksv_msb);
-
- /* Setup seed values for random number An */
- DSS_REG_W(io, reg_set->entropy_ctrl0, 0xB1FFB0FF);
- DSS_REG_W(io, reg_set->entropy_ctrl1, 0xF00DFACE);
-
- /* make sure hw is programmed */
- wmb();
-
- /* enable hdcp engine */
- DSS_REG_W(io, reg_set->ctrl, 0x1);
-
- hdcp->hdcp_state = HDCP_STATE_AUTHENTICATING;
-end:
- return rc;
-}
-
-static int dpu_hdcp_1x_read(struct dpu_hdcp_1x *hdcp,
- struct dpu_hdcp_sink_addr *sink,
- u8 *buf, bool realign)
-{
- int const max_size = 15;
- int rc = 0, read_size = 0, bytes_read = 0;
-
- if (hdcp->init_data.client_id == HDCP_CLIENT_DP) {
- int size = sink->len, offset = sink->addr;
-
- do {
- read_size = min(size, max_size);
-
- bytes_read = drm_dp_dpcd_read(hdcp->init_data.drm_aux,
- offset, buf, read_size);
- if (bytes_read != read_size) {
- pr_err("fail: offset(0x%x), size(0x%x),
rc(0x%x)\n",
- offset, read_size, bytes_read);
- break;
- }
-
- buf += read_size;
- offset += read_size;
- size -= read_size;
- } while (size > 0);
- }
-
- return rc;
-}
-
-static int dpu_hdcp_1x_write(struct dpu_hdcp_1x *hdcp,
- struct dpu_hdcp_sink_addr *sink, u8 *buf)
-{
- int const max_size = 16;
- int rc = 0, write_size = 0, bytes_written = 0;
-
- if (hdcp->init_data.client_id == HDCP_CLIENT_DP) {
- int size = sink->len, offset = sink->addr;
-
- do {
- write_size = min(size, max_size);
-
- bytes_written =
- drm_dp_dpcd_write(hdcp->init_data.drm_aux,
- offset, buf, write_size);
- if (bytes_written != write_size) {
- pr_err("fail: offset(0x%x), size(0x%x),
rc(0x%x)\n",
- offset, write_size, bytes_written);
- break;
- }
-
- buf += write_size;
- offset += write_size;
- size -= write_size;
- } while (size > 0);
- }
-
- return rc;
-}
-
-static void dpu_hdcp_1x_enable_interrupts(struct dpu_hdcp_1x *hdcp)
-{
- u32 intr_reg;
- struct dss_io_data *io;
- struct dpu_hdcp_int_set *isr;
-
- io = hdcp->init_data.core_io;
- isr = &hdcp->int_set;
-
- intr_reg = DSS_REG_R(io, isr->int_reg);
-
- intr_reg |= HDCP_INT_CLR | HDCP_INT_EN;
-
- DSS_REG_W(io, isr->int_reg, intr_reg);
-}
-
-static int dpu_hdcp_1x_read_bcaps(struct dpu_hdcp_1x *hdcp)
-{
- int rc;
- struct dpu_hdcp_reg_set *reg_set = &hdcp->reg_set;
- struct dss_io_data *hdcp_io = hdcp->init_data.hdcp_io;
-
- if (!dpu_hdcp_1x_state(HDCP_STATE_AUTHENTICATING)) {
- pr_err("invalid state\n");
- return -EINVAL;
- }
-
- rc = dpu_hdcp_1x_read(hdcp, &hdcp->sink_addr.bcaps,
- &hdcp->bcaps, false);
- if (rc) {
- pr_err("error reading bcaps\n");
- goto error;
- }
-
- pr_debug("bcaps read: 0x%x\n", hdcp->bcaps);
-
- hdcp->current_tp.ds_type = hdcp->bcaps & reg_set->repeater ?
- DS_REPEATER : DS_RECEIVER;
-
- pr_debug("ds: %s\n", hdcp->current_tp.ds_type == DS_REPEATER ?
- "repeater" : "receiver");
-
- /* Write BCAPS to the hardware */
- DSS_REG_W(hdcp_io, reg_set->sec_data12, hdcp->bcaps);
-error:
- return rc;
-}
-
-static int dpu_hdcp_1x_wait_for_hw_ready(struct dpu_hdcp_1x *hdcp)
-{
- int rc;
- u32 link0_status;
- struct dpu_hdcp_reg_set *reg_set = &hdcp->reg_set;
- struct dss_io_data *io = hdcp->init_data.core_io;
-
- if (!dpu_hdcp_1x_state(HDCP_STATE_AUTHENTICATING)) {
- pr_err("invalid state\n");
- return -EINVAL;
- }
-
- /* Wait for HDCP keys to be checked and validated */
- rc = readl_poll_timeout(io->base + reg_set->status, link0_status,
- ((link0_status >> reg_set->keys_offset) & 0x7)
- == HDCP_KEYS_STATE_VALID ||
- !dpu_hdcp_1x_state(HDCP_STATE_AUTHENTICATING),
- HDCP_POLL_SLEEP_US, HDCP_POLL_TIMEOUT_US);
- if (rc) {
- pr_err("key not ready\n");
- goto error;
- }
-
- /*
- * 1.1_Features turned off by default.
- * No need to write AInfo since 1.1_Features is disabled.
- */
- DSS_REG_W(io, reg_set->data4, 0);
-
- /* Wait for An0 and An1 bit to be ready */
- rc = readl_poll_timeout(io->base + reg_set->status, link0_status,
- (link0_status & (BIT(8) | BIT(9))) ||
- !dpu_hdcp_1x_state(HDCP_STATE_AUTHENTICATING),
- HDCP_POLL_SLEEP_US, HDCP_POLL_TIMEOUT_US);
- if (rc) {
- pr_err("An not ready\n");
- goto error;
- }
-
- /* As per hardware recommendations, wait before reading An */
- msleep(20);
-error:
- if (!dpu_hdcp_1x_state(HDCP_STATE_AUTHENTICATING))
- rc = -EINVAL;
-
- return rc;
-}
-
-static int dpu_hdcp_1x_send_an_aksv_to_sink(struct dpu_hdcp_1x *hdcp)
-{
- int rc;
- u8 an[8], aksv[5];
-
- if (!dpu_hdcp_1x_state(HDCP_STATE_AUTHENTICATING)) {
- pr_err("invalid state\n");
- return -EINVAL;
- }
-
- an[0] = hdcp->an_0 & 0xFF;
- an[1] = (hdcp->an_0 >> 8) & 0xFF;
- an[2] = (hdcp->an_0 >> 16) & 0xFF;
- an[3] = (hdcp->an_0 >> 24) & 0xFF;
- an[4] = hdcp->an_1 & 0xFF;
- an[5] = (hdcp->an_1 >> 8) & 0xFF;
- an[6] = (hdcp->an_1 >> 16) & 0xFF;
- an[7] = (hdcp->an_1 >> 24) & 0xFF;
-
- pr_debug("an read: 0x%2x%2x%2x%2x%2x%2x%2x%2x\n",
- an[7], an[6], an[5], an[4], an[3], an[2], an[1], an[0]);
-
- rc = dpu_hdcp_1x_write(hdcp, &hdcp->sink_addr.an, an);
- if (rc) {
- pr_err("error writing an to sink\n");
- goto error;
- }
-
- /* Copy An and AKSV to byte arrays for transmission */
- aksv[0] = hdcp->aksv_0 & 0xFF;
- aksv[1] = (hdcp->aksv_0 >> 8) & 0xFF;
- aksv[2] = (hdcp->aksv_0 >> 16) & 0xFF;
- aksv[3] = (hdcp->aksv_0 >> 24) & 0xFF;
- aksv[4] = hdcp->aksv_1 & 0xFF;
-
- pr_debug("aksv read: 0x%2x%2x%2x%2x%2x\n",
- aksv[4], aksv[3], aksv[2], aksv[1], aksv[0]);
-
- rc = dpu_hdcp_1x_write(hdcp, &hdcp->sink_addr.aksv, aksv);
- if (rc) {
- pr_err("error writing aksv to sink\n");
- goto error;
- }
-error:
- return rc;
-}
-
-static int dpu_hdcp_1x_read_an_aksv_from_hw(struct dpu_hdcp_1x *hdcp)
-{
- struct dss_io_data *io = hdcp->init_data.core_io;
- struct dpu_hdcp_reg_set *reg_set = &hdcp->reg_set;
-
- if (!dpu_hdcp_1x_state(HDCP_STATE_AUTHENTICATING)) {
- pr_err("invalid state\n");
- return -EINVAL;
- }
-
- hdcp->an_0 = DSS_REG_R(io, reg_set->data5);
- if (hdcp->init_data.client_id == HDCP_CLIENT_DP) {
- udelay(1);
- hdcp->an_0 = DSS_REG_R(io, reg_set->data5);
- }
-
- hdcp->an_1 = DSS_REG_R(io, reg_set->data6);
- if (hdcp->init_data.client_id == HDCP_CLIENT_DP) {
- udelay(1);
- hdcp->an_1 = DSS_REG_R(io, reg_set->data6);
- }
-
- /* Read AKSV */
- hdcp->aksv_0 = DSS_REG_R(io, reg_set->data3);
- hdcp->aksv_1 = DSS_REG_R(io, reg_set->data4);
-
- return 0;
-}
-
-static int dpu_hdcp_1x_get_bksv_from_sink(struct dpu_hdcp_1x *hdcp)
-{
- int rc;
- u8 *bksv = hdcp->current_tp.bksv;
- u32 link0_bksv_0, link0_bksv_1;
- struct dpu_hdcp_reg_set *reg_set = &hdcp->reg_set;
- struct dss_io_data *hdcp_io = hdcp->init_data.hdcp_io;
-
- rc = dpu_hdcp_1x_read(hdcp, &hdcp->sink_addr.bksv, bksv, false);
- if (rc) {
- pr_err("error reading bksv from sink\n");
- goto error;
- }
-
- pr_debug("bksv read: 0x%2x%2x%2x%2x%2x\n",
- bksv[4], bksv[3], bksv[2], bksv[1], bksv[0]);
-
- /* check there are 20 ones in BKSV */
- if (dpu_hdcp_1x_count_one(bksv, 5) != 20) {
- pr_err("%s: BKSV doesn't have 20 1's and 20 0's\n",
- DPU_HDCP_STATE_NAME);
- rc = -EINVAL;
- goto error;
- }
-
- link0_bksv_0 = bksv[3];
- link0_bksv_0 = (link0_bksv_0 << 8) | bksv[2];
- link0_bksv_0 = (link0_bksv_0 << 8) | bksv[1];
- link0_bksv_0 = (link0_bksv_0 << 8) | bksv[0];
- link0_bksv_1 = bksv[4];
-
- DSS_REG_W(hdcp_io, reg_set->sec_data0, link0_bksv_0);
- DSS_REG_W(hdcp_io, reg_set->sec_data1, link0_bksv_1);
-error:
- return rc;
-}
-
-static void dpu_hdcp_1x_enable_sink_irq_hpd(struct dpu_hdcp_1x *hdcp)
-{
- u8 const required_major = 1, required_minor = 2;
- u8 sink_major = 0, sink_minor = 0;
- u8 enable_hpd_irq = 0x1;
- int rc;
- unsigned char revision = *hdcp->init_data.revision;
-
- sink_major = (revision >> 4) & 0x0f;
- sink_minor = revision & 0x0f;
- pr_debug("revision: %d.%d\n", sink_major, sink_minor);
-
- if ((sink_minor < required_minor) || (sink_major < required_major) ||
- (hdcp->current_tp.ds_type != DS_REPEATER)) {
- pr_debug("sink irq hpd not enabled\n");
- return;
- }
-
- rc = dpu_hdcp_1x_write(hdcp, &hdcp->sink_addr.ainfo, &enable_hpd_irq);
- if (rc)
- pr_debug("error writing ainfo to sink\n");
-}
-
-static int dpu_hdcp_1x_verify_r0(struct dpu_hdcp_1x *hdcp)
-{
- int rc, r0_retry = 3;
- u8 buf[2];
- u32 link0_status, timeout_count;
- u32 const r0_read_delay_us = 1;
- u32 const r0_read_timeout_us = r0_read_delay_us * 10;
- struct dpu_hdcp_reg_set *reg_set = &hdcp->reg_set;
- struct dss_io_data *io = hdcp->init_data.core_io;
-
- if (!dpu_hdcp_1x_state(HDCP_STATE_AUTHENTICATING)) {
- pr_err("invalid state\n");
- return -EINVAL;
- }
-
- /* Wait for HDCP R0 computation to be completed */
- rc = readl_poll_timeout(io->base + reg_set->status, link0_status,
- (link0_status & BIT(reg_set->r0_offset)) ||
- !dpu_hdcp_1x_state(HDCP_STATE_AUTHENTICATING),
- HDCP_POLL_SLEEP_US, HDCP_POLL_TIMEOUT_US);
- if (rc) {
- pr_err("R0 not ready\n");
- goto error;
- }
-
- /*
- * HDCP Compliace Test case 1A-01:
- * Wait here at least 100ms before reading R0'
- */
- if (hdcp->init_data.client_id == HDCP_CLIENT_HDMI) {
- msleep(100);
- } else {
- if (!hdcp->sink_r0_ready) {
- reinit_completion(&hdcp->sink_r0_available);
- timeout_count = wait_for_completion_timeout(
- &hdcp->sink_r0_available, HZ / 2);
-
- if (hdcp->reauth) {
- pr_err("sink R0 not ready\n");
- rc = -EINVAL;
- goto error;
- }
- }
- }
-
- do {
- memset(buf, 0, sizeof(buf));
-
- rc = dpu_hdcp_1x_read(hdcp, &hdcp->sink_addr.r0,
- buf, false);
- if (rc) {
- pr_err("error reading R0' from sink\n");
- goto error;
- }
-
- pr_debug("sink R0'read: %2x%2x\n", buf[1], buf[0]);
-
- DSS_REG_W(io, reg_set->data2_0, (((u32)buf[1]) << 8) | buf[0]);
-
- rc = readl_poll_timeout(io->base + reg_set->status,
- link0_status, (link0_status & BIT(12)) ||
- !dpu_hdcp_1x_state(HDCP_STATE_AUTHENTICATING),
- r0_read_delay_us, r0_read_timeout_us);
- } while (rc && --r0_retry);
-error:
- if (!dpu_hdcp_1x_state(HDCP_STATE_AUTHENTICATING))
- rc = -EINVAL;
-
- return rc;
-}
-
-static int dpu_hdcp_1x_authentication_part1(struct dpu_hdcp_1x *hdcp)
-{
- int rc;
-
- if (!dpu_hdcp_1x_state(HDCP_STATE_AUTHENTICATING)) {
- pr_err("invalid state\n");
- return -EINVAL;
- }
-
- dpu_hdcp_1x_enable_interrupts(hdcp);
-
- rc = dpu_hdcp_1x_read_bcaps(hdcp);
- if (rc)
- goto error;
-
- rc = dpu_hdcp_1x_wait_for_hw_ready(hdcp);
- if (rc)
- goto error;
-
- rc = dpu_hdcp_1x_read_an_aksv_from_hw(hdcp);
- if (rc)
- goto error;
-
- rc = dpu_hdcp_1x_get_bksv_from_sink(hdcp);
- if (rc)
- goto error;
-
- rc = dpu_hdcp_1x_send_an_aksv_to_sink(hdcp);
- if (rc)
- goto error;
-
- dpu_hdcp_1x_enable_sink_irq_hpd(hdcp);
-
- rc = dpu_hdcp_1x_verify_r0(hdcp);
- if (rc)
- goto error;
-
- pr_info("SUCCESSFUL\n");
-
- return 0;
-error:
- pr_err("%s: FAILED\n", DPU_HDCP_STATE_NAME);
-
- return rc;
-}
-
-static int dpu_hdcp_1x_transfer_v_h(struct dpu_hdcp_1x *hdcp)
-{
- int rc = 0;
- struct dss_io_data *io = hdcp->init_data.hdcp_io;
- struct dpu_hdcp_reg_set *reg_set = &hdcp->reg_set;
- struct dpu_hdcp_1x_reg_data reg_data[] = {
- {reg_set->sec_data7, &hdcp->sink_addr.v_h0},
- {reg_set->sec_data8, &hdcp->sink_addr.v_h1},
- {reg_set->sec_data9, &hdcp->sink_addr.v_h2},
- {reg_set->sec_data10, &hdcp->sink_addr.v_h3},
- {reg_set->sec_data11, &hdcp->sink_addr.v_h4},
- };
- struct dpu_hdcp_sink_addr sink = {"V", reg_data->sink->addr};
- u32 size = ARRAY_SIZE(reg_data);
- u8 buf[0xFF] = {0};
- u32 i = 0, len = 0;
-
- if (!dpu_hdcp_1x_state(HDCP_STATE_AUTHENTICATING)) {
- pr_err("invalid state\n");
- return -EINVAL;
- }
-
- for (i = 0; i < size; i++) {
- struct dpu_hdcp_1x_reg_data *rd = reg_data + i;
-
- len += rd->sink->len;
- }
-
- sink.len = len;
-
- rc = dpu_hdcp_1x_read(hdcp, &sink, buf, false);
- if (rc) {
- pr_err("error reading %s\n", sink.name);
- goto end;
- }
-
- for (i = 0; i < size; i++) {
- struct dpu_hdcp_1x_reg_data *rd = reg_data + i;
- u32 reg_data;
-
- memcpy(®_data, buf + (sizeof(u32) * i), sizeof(u32));
- DSS_REG_W(io, rd->reg_id, reg_data);
- }
-end:
- return rc;
-}
-
-static int dpu_hdcp_1x_validate_downstream(struct dpu_hdcp_1x *hdcp)
-{
- int rc;
- u8 buf[2] = {0, 0};
- u8 device_count, depth;
- u8 max_cascade_exceeded, max_devs_exceeded;
- u16 bstatus;
- struct dpu_hdcp_reg_set *reg_set = &hdcp->reg_set;
-
- if (!dpu_hdcp_1x_state(HDCP_STATE_AUTHENTICATING)) {
- pr_err("invalid state\n");
- return -EINVAL;
- }
-
- rc = dpu_hdcp_1x_read(hdcp, &hdcp->sink_addr.bstatus,
- buf, false);
- if (rc) {
- pr_err("error reading bstatus\n");
- goto end;
- }
-
- bstatus = buf[1];
- bstatus = (bstatus << 8) | buf[0];
-
- device_count = bstatus & 0x7F;
-
- pr_debug("device count %d\n", device_count);
-
- /* Cascaded repeater depth */
- depth = (bstatus >> 8) & 0x7;
- pr_debug("depth %d\n", depth);
-
- /*
- * HDCP Compliance 1B-05:
- * Check if no. of devices connected to repeater
- * exceed max_devices_connected from bit 7 of Bstatus.
- */
- max_devs_exceeded = (bstatus & BIT(7)) >> 7;
- if (max_devs_exceeded == 0x01) {
- pr_err("no. of devs connected exceed max allowed\n");
- rc = -EINVAL;
- goto end;
- }
-
- /*
- * HDCP Compliance 1B-06:
- * Check if no. of cascade connected to repeater
- * exceed max_cascade_connected from bit 11 of Bstatus.
- */
- max_cascade_exceeded = (bstatus & BIT(11)) >> 11;
- if (max_cascade_exceeded == 0x01) {
- pr_err("no. of cascade connections exceed max allowed\n");
- rc = -EINVAL;
- goto end;
- }
-
- /* Update topology information */
- hdcp->current_tp.dev_count = device_count;
- hdcp->current_tp.max_cascade_exceeded = max_cascade_exceeded;
- hdcp->current_tp.max_dev_exceeded = max_devs_exceeded;
- hdcp->current_tp.depth = depth;
-
- DSS_REG_W(hdcp->init_data.hdcp_io,
- reg_set->sec_data12, hdcp->bcaps | (bstatus << 8));
-end:
- return rc;
-}
-
-static int dpu_hdcp_1x_read_ksv_fifo(struct dpu_hdcp_1x *hdcp)
-{
- u32 ksv_read_retry = 20, ksv_bytes, rc = 0;
- u8 *ksv_fifo = hdcp->current_tp.ksv_list;
-
- if (!dpu_hdcp_1x_state(HDCP_STATE_AUTHENTICATING)) {
- pr_err("invalid state\n");
- return -EINVAL;
- }
-
- memset(ksv_fifo, 0, sizeof(hdcp->current_tp.ksv_list));
-
- /* each KSV is 5 bytes long */
- ksv_bytes = 5 * hdcp->current_tp.dev_count;
- hdcp->sink_addr.ksv_fifo.len = ksv_bytes;
-
- while (ksv_bytes && --ksv_read_retry) {
- rc = dpu_hdcp_1x_read(hdcp, &hdcp->sink_addr.ksv_fifo,
- ksv_fifo, true);
- if (rc)
- pr_err("could not read ksv fifo (%d)\n",
- ksv_read_retry);
- else
- break;
- }
-
- if (rc)
- pr_err("error reading ksv_fifo\n");
-
- return rc;
-}
-
-static int dpu_hdcp_1x_write_ksv_fifo(struct dpu_hdcp_1x *hdcp)
-{
- int i, rc = 0;
- u8 *ksv_fifo = hdcp->current_tp.ksv_list;
- u32 ksv_bytes = hdcp->sink_addr.ksv_fifo.len;
- struct dss_io_data *io = hdcp->init_data.core_io;
- struct dss_io_data *sec_io = hdcp->init_data.hdcp_io;
- struct dpu_hdcp_reg_set *reg_set = &hdcp->reg_set;
- u32 sha_status = 0, status;
-
- if (!dpu_hdcp_1x_state(HDCP_STATE_AUTHENTICATING)) {
- pr_err("invalid state\n");
- return -EINVAL;
- }
-
- /* reset SHA Controller */
- DSS_REG_W(sec_io, reg_set->sec_sha_ctrl, 0x1);
- DSS_REG_W(sec_io, reg_set->sec_sha_ctrl, 0x0);
-
- for (i = 0; i < ksv_bytes - 1; i++) {
- /* Write KSV byte and do not set DONE bit[0] */
- DSS_REG_W_ND(sec_io, reg_set->sec_sha_data, ksv_fifo[i] << 16);
-
- /*
- * Once 64 bytes have been written, we need to poll for
- * HDCP_SHA_BLOCK_DONE before writing any further
- */
- if (i && !((i + 1) % 64)) {
- rc = readl_poll_timeout(io->base + reg_set->sha_status,
- sha_status, (sha_status & BIT(0)) ||
- !dpu_hdcp_1x_state(HDCP_STATE_AUTHENTICATING),
- HDCP_POLL_SLEEP_US, HDCP_POLL_TIMEOUT_US);
- if (rc) {
- pr_err("block not done\n");
- goto error;
- }
- }
- }
-
- /* Write l to DONE bit[0] */
- DSS_REG_W_ND(sec_io, reg_set->sec_sha_data,
- (ksv_fifo[ksv_bytes - 1] << 16) | 0x1);
-
- /* Now wait for HDCP_SHA_COMP_DONE */
- rc = readl_poll_timeout(io->base + reg_set->sha_status, sha_status,
- (sha_status & BIT(4)) ||
- !dpu_hdcp_1x_state(HDCP_STATE_AUTHENTICATING),
- HDCP_POLL_SLEEP_US, HDCP_POLL_TIMEOUT_US);
- if (rc) {
- pr_err("V computation not done\n");
- goto error;
- }
-
- /* Wait for V_MATCHES */
- rc = readl_poll_timeout(io->base + reg_set->status, status,
- (status & BIT(reg_set->v_offset)) ||
- !dpu_hdcp_1x_state(HDCP_STATE_AUTHENTICATING),
- HDCP_POLL_SLEEP_US, HDCP_POLL_TIMEOUT_US);
- if (rc) {
- pr_err("V mismatch\n");
- rc = -EINVAL;
- }
-error:
- if (!dpu_hdcp_1x_state(HDCP_STATE_AUTHENTICATING))
- rc = -EINVAL;
-
- return rc;
-}
-
-static int dpu_hdcp_1x_wait_for_ksv_ready(struct dpu_hdcp_1x *hdcp)
-{
- int rc, timeout;
-
- if (!dpu_hdcp_1x_state(HDCP_STATE_AUTHENTICATING)) {
- pr_err("invalid state\n");
- return -EINVAL;
- }
-
- /*
- * Wait until READY bit is set in BCAPS, as per HDCP specifications
- * maximum permitted time to check for READY bit is five seconds.
- */
- rc = dpu_hdcp_1x_read(hdcp, &hdcp->sink_addr.bcaps,
- &hdcp->bcaps, false);
- if (rc) {
- pr_err("error reading bcaps\n");
- goto error;
- }
-
- if (hdcp->init_data.client_id == HDCP_CLIENT_HDMI) {
- timeout = 50;
-
- while (!(hdcp->bcaps & BIT(5)) && --timeout) {
- rc = dpu_hdcp_1x_read(hdcp,
- &hdcp->sink_addr.bcaps,
- &hdcp->bcaps, false);
- if (rc ||
- !dpu_hdcp_1x_state(HDCP_STATE_AUTHENTICATING)) {
- pr_err("error reading bcaps\n");
- goto error;
- }
- msleep(100);
- }
- } else {
- u8 cp_buf = 0;
- struct dpu_hdcp_sink_addr *sink =
- &hdcp->sink_addr.cp_irq_status;
-
- timeout = jiffies_to_msecs(jiffies);
-
- while (1) {
- rc = dpu_hdcp_1x_read(hdcp, sink, &cp_buf, false);
- if (rc)
- goto error;
-
- if (cp_buf & BIT(0))
- break;
-
- /* max timeout of 5 sec as per hdcp 1.x spec */
- if (abs(timeout - jiffies_to_msecs(jiffies)) > 5000) {
- timeout = 0;
- break;
- }
-
- if (hdcp->ksv_ready || hdcp->reauth ||
- !dpu_hdcp_1x_state(HDCP_STATE_AUTHENTICATING))
- break;
-
- /* re-read after a minimum delay */
- msleep(20);
- }
- }
-
- if (!timeout || hdcp->reauth ||
- !dpu_hdcp_1x_state(HDCP_STATE_AUTHENTICATING)) {
- pr_err("DS KSV not ready\n");
- rc = -EINVAL;
- } else {
- hdcp->ksv_ready = true;
- }
-error:
- return rc;
-}
-
-static int dpu_hdcp_1x_authentication_part2(struct dpu_hdcp_1x *hdcp)
-{
- int rc;
- int v_retry = 3;
-
- rc = dpu_hdcp_1x_validate_downstream(hdcp);
- if (rc)
- goto error;
-
- rc = dpu_hdcp_1x_read_ksv_fifo(hdcp);
- if (rc)
- goto error;
-
- do {
- rc = dpu_hdcp_1x_transfer_v_h(hdcp);
- if (rc)
- goto error;
-
- /* do not proceed further if no device connected */
- if (!hdcp->current_tp.dev_count)
- goto error;
-
- rc = dpu_hdcp_1x_write_ksv_fifo(hdcp);
- } while (--v_retry && rc);
-error:
- if (rc) {
- pr_err("%s: FAILED\n", DPU_HDCP_STATE_NAME);
- } else {
- hdcp->hdcp_state = HDCP_STATE_AUTHENTICATED;
-
- pr_info("SUCCESSFUL\n");
- }
-
- return rc;
-}
-
-static void dpu_hdcp_1x_cache_topology(struct dpu_hdcp_1x *hdcp)
-{
- if (!hdcp || !hdcp->init_data.core_io) {
- pr_err("invalid input\n");
- return;
- }
-
- memcpy((void *)&hdcp->cached_tp,
- (void *) &hdcp->current_tp,
- sizeof(hdcp->cached_tp));
- hdcp1_cache_repeater_topology((void *)&hdcp->cached_tp);
-}
-
-static void dpu_hdcp_1x_notify_topology(void)
-{
- hdcp1_notify_topology();
-}
-
-static void dpu_hdcp_1x_update_auth_status(struct dpu_hdcp_1x *hdcp)
-{
- if (dpu_hdcp_1x_state(HDCP_STATE_AUTHENTICATED)) {
- dpu_hdcp_1x_cache_topology(hdcp);
- dpu_hdcp_1x_notify_topology();
- }
-
- if (hdcp->init_data.notify_status &&
- !dpu_hdcp_1x_state(HDCP_STATE_INACTIVE)) {
- hdcp->init_data.notify_status(
- hdcp->init_data.cb_data,
- hdcp->hdcp_state);
- }
-}
-
-static void dpu_hdcp_1x_auth_work(struct work_struct *work)
-{
- int rc;
- struct delayed_work *dw = to_delayed_work(work);
- struct dpu_hdcp_1x *hdcp = container_of(dw,
- struct dpu_hdcp_1x, hdcp_auth_work);
- struct dss_io_data *io;
-
- if (!hdcp) {
- pr_err("invalid input\n");
- return;
- }
-
- if (!dpu_hdcp_1x_state(HDCP_STATE_AUTHENTICATING)) {
- pr_err("invalid state\n");
- return;
- }
-
- hdcp->sink_r0_ready = false;
- hdcp->reauth = false;
- hdcp->ksv_ready = false;
-
- io = hdcp->init_data.core_io;
- /* Enabling Software DDC for HDMI and REF timer for DP */
- if (hdcp->init_data.client_id == HDCP_CLIENT_HDMI)
- DSS_REG_W_ND(io, REG_HDMI_DDC_ARBITRATION, DSS_REG_R(io,
- REG_HDMI_DDC_ARBITRATION) & ~(BIT(4)));
- else if (hdcp->init_data.client_id == HDCP_CLIENT_DP) {
- DSS_REG_W(io, DP_DP_HPD_REFTIMER, 0x10013);
- }
-
- /*
- * program hw to enable encryption as soon as
- * authentication is successful.
- */
- hdcp1_set_enc(true);
-
- rc = dpu_hdcp_1x_authentication_part1(hdcp);
- if (rc)
- goto end;
-
- if (hdcp->current_tp.ds_type == DS_REPEATER) {
- rc = dpu_hdcp_1x_wait_for_ksv_ready(hdcp);
- if (rc)
- goto end;
- } else {
- hdcp->hdcp_state = HDCP_STATE_AUTHENTICATED;
- goto end;
- }
-
- hdcp->ksv_ready = false;
-
- rc = dpu_hdcp_1x_authentication_part2(hdcp);
- if (rc)
- goto end;
-
- /*
- * Disabling software DDC before going into part3 to make sure
- * there is no Arbitration between software and hardware for DDC
- */
- if (hdcp->init_data.client_id == HDCP_CLIENT_HDMI)
- DSS_REG_W_ND(io, REG_HDMI_DDC_ARBITRATION, DSS_REG_R(io,
- REG_HDMI_DDC_ARBITRATION) | (BIT(4)));
-end:
- if (rc && !dpu_hdcp_1x_state(HDCP_STATE_INACTIVE))
- hdcp->hdcp_state = HDCP_STATE_AUTH_FAIL;
-
- dpu_hdcp_1x_update_auth_status(hdcp);
-}
-
-static int dpu_hdcp_1x_authenticate(void *input)
-{
- struct dpu_hdcp_1x *hdcp = (struct dpu_hdcp_1x *)input;
-
- if (!hdcp) {
- pr_err("invalid input\n");
- return -EINVAL;
- }
-
- flush_delayed_work(&hdcp->hdcp_auth_work);
-
- if (!dpu_hdcp_1x_state(HDCP_STATE_INACTIVE)) {
- pr_err("invalid state\n");
- return -EINVAL;
- }
-
- if (!dpu_hdcp_1x_load_keys(input)) {
-
- queue_delayed_work(hdcp->workq,
- &hdcp->hdcp_auth_work, HZ/2);
- } else {
- hdcp->hdcp_state = HDCP_STATE_AUTH_FAIL;
- dpu_hdcp_1x_update_auth_status(hdcp);
- }
-
- return 0;
-} /* hdcp_1x_authenticate */
-
-static int dpu_hdcp_1x_reauthenticate(void *input)
-{
- struct dpu_hdcp_1x *hdcp = (struct dpu_hdcp_1x *)input;
- struct dss_io_data *io;
- struct dpu_hdcp_reg_set *reg_set;
- struct dpu_hdcp_int_set *isr;
- u32 ret = 0, reg;
-
- if (!hdcp || !hdcp->init_data.core_io) {
- pr_err("invalid input\n");
- return -EINVAL;
- }
-
- io = hdcp->init_data.core_io;
- reg_set = &hdcp->reg_set;
- isr = &hdcp->int_set;
-
- if (!dpu_hdcp_1x_state(HDCP_STATE_AUTH_FAIL)) {
- pr_err("invalid state\n");
- return -EINVAL;
- }
-
- /* Disable HDCP interrupts */
- DSS_REG_W(io, isr->int_reg, DSS_REG_R(io, isr->int_reg) & ~HDCP_INT_EN);
-
- reg = DSS_REG_R(io, reg_set->reset);
- DSS_REG_W(io, reg_set->reset, reg | reg_set->reset_bit);
-
- /* Disable encryption and disable the HDCP block */
- DSS_REG_W(io, reg_set->ctrl, 0);
-
- DSS_REG_W(io, reg_set->reset, reg & ~reg_set->reset_bit);
-
- hdcp->hdcp_state = HDCP_STATE_INACTIVE;
- dpu_hdcp_1x_authenticate(hdcp);
-
- return ret;
-} /* hdcp_1x_reauthenticate */
-
-static void dpu_hdcp_1x_off(void *input)
-{
- struct dpu_hdcp_1x *hdcp = (struct dpu_hdcp_1x *)input;
- struct dss_io_data *io;
- struct dpu_hdcp_reg_set *reg_set;
- struct dpu_hdcp_int_set *isr;
- int rc = 0;
- u32 reg;
-
- if (!hdcp || !hdcp->init_data.core_io) {
- pr_err("invalid input\n");
- return;
- }
-
- io = hdcp->init_data.core_io;
- reg_set = &hdcp->reg_set;
- isr = &hdcp->int_set;
-
- if (dpu_hdcp_1x_state(HDCP_STATE_INACTIVE)) {
- pr_err("invalid state\n");
- return;
- }
-
- /*
- * Disable HDCP interrupts.
- * Also, need to set the state to inactive here so that any ongoing
- * reauth works will know that the HDCP session has been turned off.
- */
- mutex_lock(hdcp->init_data.mutex);
- DSS_REG_W(io, isr->int_reg,
- DSS_REG_R(io, isr->int_reg) & ~HDCP_INT_EN);
- hdcp->hdcp_state = HDCP_STATE_INACTIVE;
- mutex_unlock(hdcp->init_data.mutex);
-
- /* complete any wait pending */
- complete_all(&hdcp->sink_r0_available);
- complete_all(&hdcp->r0_checked);
- /*
- * Cancel any pending auth/reauth attempts.
- * If one is ongoing, this will wait for it to finish.
- * No more reauthentiaction attempts will be scheduled since we
- * set the currect state to inactive.
- */
- rc = cancel_delayed_work_sync(&hdcp->hdcp_auth_work);
- if (rc)
- pr_debug("%s: Deleted hdcp auth work\n",
- DPU_HDCP_STATE_NAME);
-
- hdcp1_set_enc(false);
-
- reg = DSS_REG_R(io, reg_set->reset);
- DSS_REG_W(io, reg_set->reset, reg | reg_set->reset_bit);
-
- /* Disable encryption and disable the HDCP block */
- DSS_REG_W(io, reg_set->ctrl, 0);
-
- DSS_REG_W(io, reg_set->reset, reg & ~reg_set->reset_bit);
-
- hdcp->sink_r0_ready = false;
-
- pr_debug("%s: HDCP: Off\n", DPU_HDCP_STATE_NAME);
-} /* hdcp_1x_off */
-
-static int dpu_hdcp_1x_isr(void *input)
-{
- struct dpu_hdcp_1x *hdcp = (struct dpu_hdcp_1x *)input;
- int rc = 0;
- struct dss_io_data *io;
- u32 hdcp_int_val;
- struct dpu_hdcp_reg_set *reg_set;
- struct dpu_hdcp_int_set *isr;
-
- if (!hdcp || !hdcp->init_data.core_io) {
- pr_err("invalid input\n");
- rc = -EINVAL;
- goto error;
- }
-
- io = hdcp->init_data.core_io;
- reg_set = &hdcp->reg_set;
- isr = &hdcp->int_set;
-
- hdcp_int_val = DSS_REG_R(io, isr->int_reg);
-
- /* Ignore HDCP interrupts if HDCP is disabled */
- if (dpu_hdcp_1x_state(HDCP_STATE_INACTIVE)) {
- DSS_REG_W(io, isr->int_reg, hdcp_int_val | HDCP_INT_CLR);
- return 0;
- }
-
- if (hdcp_int_val & isr->auth_success_int) {
- /* AUTH_SUCCESS_INT */
- DSS_REG_W(io, isr->int_reg,
- (hdcp_int_val | isr->auth_success_ack));
- pr_debug("%s: AUTH SUCCESS\n", DPU_HDCP_STATE_NAME);
-
- if (dpu_hdcp_1x_state(HDCP_STATE_AUTHENTICATING))
- complete_all(&hdcp->r0_checked);
- }
-
- if (hdcp_int_val & isr->auth_fail_int) {
- /* AUTH_FAIL_INT */
- u32 link_status = DSS_REG_R(io, reg_set->status);
-
- DSS_REG_W(io, isr->int_reg,
- (hdcp_int_val | isr->auth_fail_ack));
-
- pr_debug("%s: AUTH FAIL, LINK0_STATUS=0x%08x\n",
- DPU_HDCP_STATE_NAME, link_status);
-
- if (dpu_hdcp_1x_state(HDCP_STATE_AUTHENTICATED)) {
- hdcp->hdcp_state = HDCP_STATE_AUTH_FAIL;
- dpu_hdcp_1x_update_auth_status(hdcp);
- } else if (dpu_hdcp_1x_state(HDCP_STATE_AUTHENTICATING)) {
- complete_all(&hdcp->r0_checked);
- }
-
- /* Clear AUTH_FAIL_INFO as well */
- DSS_REG_W(io, isr->int_reg,
- (hdcp_int_val | isr->auth_fail_info_ack));
- }
-
- if (hdcp_int_val & isr->tx_req_int) {
- /* DDC_XFER_REQ_INT */
- DSS_REG_W(io, isr->int_reg,
- (hdcp_int_val | isr->tx_req_ack));
- pr_debug("%s: DDC_XFER_REQ_INT received\n",
- DPU_HDCP_STATE_NAME);
- }
-
- if (hdcp_int_val & isr->tx_req_done_int) {
- /* DDC_XFER_DONE_INT */
- DSS_REG_W(io, isr->int_reg,
- (hdcp_int_val | isr->tx_req_done_ack));
- pr_debug("%s: DDC_XFER_DONE received\n",
- DPU_HDCP_STATE_NAME);
- }
-
- if (hdcp_int_val & isr->encryption_ready) {
- /* Encryption enabled */
- DSS_REG_W(io, isr->int_reg,
- (hdcp_int_val | isr->encryption_ready_ack));
- pr_debug("%s: encryption ready received\n",
- DPU_HDCP_STATE_NAME);
- }
-
- if (hdcp_int_val & isr->encryption_not_ready) {
- /* Encryption enabled */
- DSS_REG_W(io, isr->int_reg,
- (hdcp_int_val | isr->encryption_not_ready_ack));
- pr_debug("%s: encryption not ready received\n",
- DPU_HDCP_STATE_NAME);
- }
-
-error:
- return rc;
-}
-
-void dpu_hdcp_1x_deinit(void *input)
-{
- struct dpu_hdcp_1x *hdcp = (struct dpu_hdcp_1x *)input;
-
- if (!hdcp) {
- pr_err("invalid input\n");
- return;
- }
-
- if (hdcp->workq)
- destroy_workqueue(hdcp->workq);
-
- kfree(hdcp);
-} /* hdcp_1x_deinit */
-
-static void dpu_hdcp_1x_update_client_reg_set(struct dpu_hdcp_1x *hdcp)
-{
- if (hdcp->init_data.client_id == HDCP_CLIENT_DP) {
- struct dpu_hdcp_reg_set reg_set = HDCP_REG_SET_CLIENT_DP;
- struct dpu_hdcp_sink_addr_map sink_addr = HDCP_DP_SINK_ADDR_MAP;
- struct dpu_hdcp_int_set isr = HDCP_DP_INT_SET;
-
- hdcp->reg_set = reg_set;
- hdcp->sink_addr = sink_addr;
- hdcp->int_set = isr;
- }
-}
-
-static bool dpu_hdcp_1x_is_cp_irq_raised(struct dpu_hdcp_1x *hdcp)
-{
- int ret;
- u8 buf = 0;
- struct dpu_hdcp_sink_addr sink = {"irq", 0x201, 1};
-
- ret = dpu_hdcp_1x_read(hdcp, &sink, &buf, false);
- if (ret)
- pr_err("error reading irq_vector\n");
-
- return buf & BIT(2) ? true : false;
-}
-
-static void dpu_hdcp_1x_clear_cp_irq(struct dpu_hdcp_1x *hdcp)
-{
- int ret;
- u8 buf = BIT(2);
- struct dpu_hdcp_sink_addr sink = {"irq", 0x201, 1};
-
- ret = dpu_hdcp_1x_write(hdcp, &sink, &buf);
- if (ret)
- pr_err("error clearing irq_vector\n");
-}
-
-static int dpu_hdcp_1x_cp_irq(void *input)
-{
- struct dpu_hdcp_1x *hdcp = (struct dpu_hdcp_1x *)input;
- u8 buf = 0;
- int ret;
-
- if (!hdcp) {
- pr_err("invalid input\n");
- goto irq_not_handled;
- }
-
- if (!dpu_hdcp_1x_is_cp_irq_raised(hdcp)) {
- pr_debug("cp_irq not raised\n");
- goto irq_not_handled;
- }
-
- ret = dpu_hdcp_1x_read(hdcp, &hdcp->sink_addr.cp_irq_status,
- &buf, false);
- if (ret) {
- pr_err("error reading cp_irq_status\n");
- goto irq_not_handled;
- }
-
- if ((buf & BIT(2)) || (buf & BIT(3))) {
- pr_err("%s\n",
- buf & BIT(2) ? "LINK_INTEGRITY_FAILURE" :
- "REAUTHENTICATION_REQUEST");
-
- hdcp->reauth = true;
-
- if (!dpu_hdcp_1x_state(HDCP_STATE_INACTIVE))
- hdcp->hdcp_state = HDCP_STATE_AUTH_FAIL;
-
- complete_all(&hdcp->sink_r0_available);
- dpu_hdcp_1x_update_auth_status(hdcp);
- } else if (buf & BIT(1)) {
- pr_debug("R0' AVAILABLE\n");
- hdcp->sink_r0_ready = true;
- complete_all(&hdcp->sink_r0_available);
- } else if ((buf & BIT(0))) {
- pr_debug("KSVs READY\n");
-
- hdcp->ksv_ready = true;
- } else {
- pr_debug("spurious interrupt\n");
- }
-
- dpu_hdcp_1x_clear_cp_irq(hdcp);
- return 0;
-
-irq_not_handled:
- return -EINVAL;
-}
-
-void *dpu_hdcp_1x_init(struct dpu_hdcp_init_data *init_data)
-{
- struct dpu_hdcp_1x *hdcp = NULL;
- char name[20];
- static struct dpu_hdcp_ops ops = {
- .isr = dpu_hdcp_1x_isr,
- .cp_irq = dpu_hdcp_1x_cp_irq,
- .reauthenticate = dpu_hdcp_1x_reauthenticate,
- .authenticate = dpu_hdcp_1x_authenticate,
- .off = dpu_hdcp_1x_off
- };
-
- if (!init_data || !init_data->core_io || !init_data->qfprom_io ||
- !init_data->mutex || !init_data->notify_status ||
- !init_data->workq || !init_data->cb_data) {
- pr_err("invalid input\n");
- goto error;
- }
-
- if (init_data->sec_access && !init_data->hdcp_io) {
- pr_err("hdcp_io required\n");
- goto error;
- }
-
- hdcp = kzalloc(sizeof(*hdcp), GFP_KERNEL);
- if (!hdcp)
- goto error;
-
- hdcp->init_data = *init_data;
- hdcp->ops = &ops;
-
- snprintf(name, sizeof(name), "hdcp_1x_%d",
- hdcp->init_data.client_id);
-
- hdcp->workq = create_workqueue(name);
- if (!hdcp->workq) {
- pr_err("Error creating workqueue\n");
- kfree(hdcp);
- goto error;
- }
-
- dpu_hdcp_1x_update_client_reg_set(hdcp);
-
- INIT_DELAYED_WORK(&hdcp->hdcp_auth_work, dpu_hdcp_1x_auth_work);
-
- hdcp->hdcp_state = HDCP_STATE_INACTIVE;
- init_completion(&hdcp->r0_checked);
- init_completion(&hdcp->sink_r0_available);
-
- pr_debug("HDCP module initialized. HDCP_STATE=%s\n",
- DPU_HDCP_STATE_NAME);
-
- return (void *)hdcp;
-
-error:
- return NULL;
-} /* hdcp_1x_init */
-
-struct dpu_hdcp_ops *dpu_hdcp_1x_start(void *input)
-{
- return ((struct dpu_hdcp_1x *)input)->ops;
-}
--
The Qualcomm Innovation Center, Inc. is a member of the Code Aurora Forum,
a Linux Foundation Collaborative Project
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