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 <ryadav@xxxxxxxxxxxxxx> --- 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 -- To unsubscribe from this list: send the line "unsubscribe linux-arm-msm" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html