From patchwork Sun Jul 30 13:07:43 2017 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Hans Verkuil X-Patchwork-Id: 9870497 X-Patchwork-Delegate: geert@linux-m68k.org Return-Path: Received: from mail.wl.linuxfoundation.org (pdx-wl-mail.web.codeaurora.org [172.30.200.125]) by pdx-korg-patchwork.web.codeaurora.org (Postfix) with ESMTP id 00EB16032A for ; Sun, 30 Jul 2017 13:15:06 +0000 (UTC) Received: from mail.wl.linuxfoundation.org (localhost [127.0.0.1]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id EA7AE285B0 for ; Sun, 30 Jul 2017 13:15:05 +0000 (UTC) Received: by mail.wl.linuxfoundation.org (Postfix, from userid 486) id DF55C285B3; Sun, 30 Jul 2017 13:15:05 +0000 (UTC) X-Spam-Checker-Version: SpamAssassin 3.3.1 (2010-03-16) on pdx-wl-mail.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-6.9 required=2.0 tests=BAYES_00,RCVD_IN_DNSWL_HI autolearn=unavailable version=3.3.1 Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id B3AE8285B0 for ; Sun, 30 Jul 2017 13:15:04 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1754008AbdG3NPE (ORCPT ); Sun, 30 Jul 2017 09:15:04 -0400 Received: from lb1-smtp-cloud7.xs4all.net ([194.109.24.24]:44572 "EHLO lb1-smtp-cloud7.xs4all.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1753962AbdG3NPD (ORCPT ); Sun, 30 Jul 2017 09:15:03 -0400 Received: from tschai.lan ([212.251.195.8]) by smtp-cloud7.xs4all.net with ESMTPA id bnwidChIOfjgxbnwqd2YHc; Sun, 30 Jul 2017 15:07:56 +0200 Received: from tschai.fritz.box (tschai [192.168.2.10]) by tschai.lan (Postfix) with ESMTPSA id 37E1818793B; Sun, 30 Jul 2017 15:07:44 +0200 (CEST) From: Hans Verkuil To: linux-media@vger.kernel.org Cc: dri-devel@lists.freedesktop.org, linux-arm-msm@vger.kernel.org, Archit Taneja , linux-renesas-soc@vger.kernel.org, devicetree@vger.kernel.org, Lars-Peter Clausen , Hans Verkuil Subject: [PATCH 4/4] drm: adv7511/33: add HDMI CEC support Date: Sun, 30 Jul 2017 15:07:43 +0200 Message-Id: <20170730130743.19681-5-hverkuil@xs4all.nl> X-Mailer: git-send-email 2.13.1 In-Reply-To: <20170730130743.19681-1-hverkuil@xs4all.nl> References: <20170730130743.19681-1-hverkuil@xs4all.nl> X-CMAE-Envelope: MS4wfI2xGwzCOJw794OdP/4oY11+gELR4FE5SeWzkwh8mnu962E0bvY+xAoKGzk3gmVOuFLkMXds9nh3ax2i4w7gjsGCzV07LaR8H5IE06ueC2L6oNMkqT6Y +xDTiV0/UtFHyLDmg4x0BhduruLNLb2UjUQDQrwoH25PH4UOunUgB0/2kH6It1z/p8XC+6MXzBWTfl9X2+lAnJjhk9iLes8A12Qzy5KwA97/pUrO7s5jzriS gk5cmAy9iCU+qUpiHG3g0UtK/3ToczIItXulkvBOSmzjlNLPKgcvhDbzRpKLwsYGDsUxgCVR6O+yEC5uglzmtLbnVg6hjcVzMbwFvubFlF1oIbpKbVA0Es7P 0LTI8vAmw38+4cPpquaJeYfX6NUfSYCdde12gkz8f7+G99WogodwtAGSgM0Y0a05mQT29k1Xq6t3NtFxRFBeWOHiZTsXPhgiCcJr92ZdVkco4RCShlPrg8od eIplHI+o59Z5kj5sutxBsYkoni3lb51cCyLhrRkfpTCYGlnShVKtXHMvvpw= Sender: linux-renesas-soc-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-renesas-soc@vger.kernel.org X-Virus-Scanned: ClamAV using ClamSMTP From: Hans Verkuil Add support for HDMI CEC to the drm adv7511/adv7533 drivers. The CEC registers that we need to use are identical for both drivers, but they appear at different offsets in the register map. Signed-off-by: Hans Verkuil --- drivers/gpu/drm/bridge/adv7511/Kconfig | 8 + drivers/gpu/drm/bridge/adv7511/Makefile | 1 + drivers/gpu/drm/bridge/adv7511/adv7511.h | 45 +++- drivers/gpu/drm/bridge/adv7511/adv7511_cec.c | 314 +++++++++++++++++++++++++++ drivers/gpu/drm/bridge/adv7511/adv7511_drv.c | 152 +++++++++++-- drivers/gpu/drm/bridge/adv7511/adv7533.c | 30 +-- 6 files changed, 500 insertions(+), 50 deletions(-) create mode 100644 drivers/gpu/drm/bridge/adv7511/adv7511_cec.c diff --git a/drivers/gpu/drm/bridge/adv7511/Kconfig b/drivers/gpu/drm/bridge/adv7511/Kconfig index 2fed567f9943..592b9d2ec034 100644 --- a/drivers/gpu/drm/bridge/adv7511/Kconfig +++ b/drivers/gpu/drm/bridge/adv7511/Kconfig @@ -21,3 +21,11 @@ config DRM_I2C_ADV7533 default y help Support for the Analog Devices ADV7533 DSI to HDMI encoder. + +config DRM_I2C_ADV7511_CEC + bool "ADV7511/33 HDMI CEC driver" + depends on DRM_I2C_ADV7511 + select CEC_CORE + default y + help + When selected the HDMI transmitter will support the CEC feature. diff --git a/drivers/gpu/drm/bridge/adv7511/Makefile b/drivers/gpu/drm/bridge/adv7511/Makefile index 5ba675534f6e..5bb384938a71 100644 --- a/drivers/gpu/drm/bridge/adv7511/Makefile +++ b/drivers/gpu/drm/bridge/adv7511/Makefile @@ -1,4 +1,5 @@ adv7511-y := adv7511_drv.o adv7511-$(CONFIG_DRM_I2C_ADV7511_AUDIO) += adv7511_audio.o +adv7511-$(CONFIG_DRM_I2C_ADV7511_CEC) += adv7511_cec.o adv7511-$(CONFIG_DRM_I2C_ADV7533) += adv7533.o obj-$(CONFIG_DRM_I2C_ADV7511) += adv7511.o diff --git a/drivers/gpu/drm/bridge/adv7511/adv7511.h b/drivers/gpu/drm/bridge/adv7511/adv7511.h index fe18a5d2d84b..4fd7b14f619b 100644 --- a/drivers/gpu/drm/bridge/adv7511/adv7511.h +++ b/drivers/gpu/drm/bridge/adv7511/adv7511.h @@ -195,6 +195,25 @@ #define ADV7511_PACKET_GM(x) ADV7511_PACKET(5, x) #define ADV7511_PACKET_SPARE(x) ADV7511_PACKET(6, x) +#define ADV7511_REG_CEC_TX_FRAME_HDR 0x00 +#define ADV7511_REG_CEC_TX_FRAME_DATA0 0x01 +#define ADV7511_REG_CEC_TX_FRAME_LEN 0x10 +#define ADV7511_REG_CEC_TX_ENABLE 0x11 +#define ADV7511_REG_CEC_TX_RETRY 0x12 +#define ADV7511_REG_CEC_TX_LOW_DRV_CNT 0x14 +#define ADV7511_REG_CEC_RX_FRAME_HDR 0x15 +#define ADV7511_REG_CEC_RX_FRAME_DATA0 0x16 +#define ADV7511_REG_CEC_RX_FRAME_LEN 0x25 +#define ADV7511_REG_CEC_RX_ENABLE 0x26 +#define ADV7511_REG_CEC_RX_BUFFERS 0x4a +#define ADV7511_REG_CEC_LOG_ADDR_MASK 0x4b +#define ADV7511_REG_CEC_LOG_ADDR_0_1 0x4c +#define ADV7511_REG_CEC_LOG_ADDR_2 0x4d +#define ADV7511_REG_CEC_CLK_DIV 0x4e +#define ADV7511_REG_CEC_SOFT_RESET 0x50 + +#define ADV7533_REG_CEC_OFFSET 0x70 + enum adv7511_input_clock { ADV7511_INPUT_CLOCK_1X, ADV7511_INPUT_CLOCK_2X, @@ -297,6 +316,8 @@ enum adv7511_type { ADV7533, }; +#define ADV7511_MAX_ADDRS 3 + struct adv7511 { struct i2c_client *i2c_main; struct i2c_client *i2c_edid; @@ -343,15 +364,29 @@ struct adv7511 { enum adv7511_type type; struct platform_device *audio_pdev; + + struct cec_adapter *cec_adap; + u8 cec_addr[ADV7511_MAX_ADDRS]; + u8 cec_valid_addrs; + bool cec_enabled_adap; + struct clk *cec_clk; + u32 cec_clk_freq; }; +#ifdef CONFIG_DRM_I2C_ADV7511_CEC +extern const struct cec_adap_ops adv7511_cec_adap_ops; + +void adv7511_cec_init(struct adv7511 *adv7511, unsigned int offset); +int adv7511_cec_parse_dt(struct device *dev, struct adv7511 *adv7511); +void adv7511_cec_irq_process(struct adv7511 *adv7511, unsigned int irq1); +#endif + #ifdef CONFIG_DRM_I2C_ADV7533 void adv7533_dsi_power_on(struct adv7511 *adv); void adv7533_dsi_power_off(struct adv7511 *adv); void adv7533_mode_set(struct adv7511 *adv, struct drm_display_mode *mode); int adv7533_patch_registers(struct adv7511 *adv); -void adv7533_uninit_cec(struct adv7511 *adv); -int adv7533_init_cec(struct adv7511 *adv); +int adv7533_patch_cec_registers(struct adv7511 *adv); int adv7533_attach_dsi(struct adv7511 *adv); void adv7533_detach_dsi(struct adv7511 *adv); int adv7533_parse_dt(struct device_node *np, struct adv7511 *adv); @@ -374,11 +409,7 @@ static inline int adv7533_patch_registers(struct adv7511 *adv) return -ENODEV; } -static inline void adv7533_uninit_cec(struct adv7511 *adv) -{ -} - -static inline int adv7533_init_cec(struct adv7511 *adv) +static inline int adv7533_patch_cec_registers(struct adv7511 *adv) { return -ENODEV; } diff --git a/drivers/gpu/drm/bridge/adv7511/adv7511_cec.c b/drivers/gpu/drm/bridge/adv7511/adv7511_cec.c new file mode 100644 index 000000000000..74081cbfb5db --- /dev/null +++ b/drivers/gpu/drm/bridge/adv7511/adv7511_cec.c @@ -0,0 +1,314 @@ +/* + * adv7511_cec.c - Analog Devices ADV7511/33 cec driver + * + * Copyright 2017 Cisco Systems, Inc. and/or its affiliates. All rights reserved. + * + * This program is free software; you may redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation; version 2 of the License. + * + * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, + * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF + * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND + * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS + * BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN + * ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN + * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE + * SOFTWARE. + * + */ + +#include +#include +#include +#include +#include + +#include + +#include "adv7511.h" + +#define ADV7511_INT1_CEC_MASK \ + (ADV7511_INT1_CEC_TX_READY | ADV7511_INT1_CEC_TX_ARBIT_LOST | \ + ADV7511_INT1_CEC_TX_RETRY_TIMEOUT | ADV7511_INT1_CEC_RX_READY1) + +static void adv_cec_tx_raw_status(struct adv7511 *adv7511, u8 tx_raw_status) +{ + unsigned int offset = adv7511->type == ADV7533 ? + ADV7533_REG_CEC_OFFSET : 0; + unsigned int val; + + if (regmap_read(adv7511->regmap_cec, + ADV7511_REG_CEC_TX_ENABLE + offset, &val)) + return; + + if ((val & 0x01) == 0) + return; + + if (tx_raw_status & 0x10) { + cec_transmit_attempt_done(adv7511->cec_adap, + CEC_TX_STATUS_ARB_LOST); + return; + } + if (tx_raw_status & 0x08) { + u8 status; + u8 err_cnt = 0; + u8 nack_cnt = 0; + u8 low_drive_cnt = 0; + unsigned int cnt; + + /* + * We set this status bit since this hardware performs + * retransmissions. + */ + status = CEC_TX_STATUS_MAX_RETRIES; + if (regmap_read(adv7511->regmap_cec, + ADV7511_REG_CEC_TX_LOW_DRV_CNT + offset, &cnt)) { + err_cnt = 1; + status |= CEC_TX_STATUS_ERROR; + } else { + nack_cnt = cnt & 0xf; + if (nack_cnt) + status |= CEC_TX_STATUS_NACK; + low_drive_cnt = cnt >> 4; + if (low_drive_cnt) + status |= CEC_TX_STATUS_LOW_DRIVE; + } + cec_transmit_done(adv7511->cec_adap, status, + 0, nack_cnt, low_drive_cnt, err_cnt); + return; + } + if (tx_raw_status & 0x20) { + cec_transmit_attempt_done(adv7511->cec_adap, CEC_TX_STATUS_OK); + return; + } +} + +void adv7511_cec_irq_process(struct adv7511 *adv7511, unsigned int irq1) +{ + unsigned int offset = adv7511->type == ADV7533 ? + ADV7533_REG_CEC_OFFSET : 0; + struct cec_msg msg = {}; + unsigned int len; + unsigned int val; + u8 i; + + if (irq1 & 0x38) + adv_cec_tx_raw_status(adv7511, irq1); + + if (!(irq1 & 1)) + return; + + if (regmap_read(adv7511->regmap_cec, + ADV7511_REG_CEC_RX_FRAME_LEN + offset, &len)) + return; + + msg.len = len & 0x1f; + + if (msg.len > 16) + msg.len = 16; + + if (!msg.len) + return; + + for (i = 0; i < msg.len; i++) { + regmap_read(adv7511->regmap_cec, + i + ADV7511_REG_CEC_RX_FRAME_HDR + offset, &val); + msg.msg[i] = val; + } + + /* toggle to re-enable rx 1 */ + regmap_write(adv7511->regmap_cec, + ADV7511_REG_CEC_RX_BUFFERS + offset, 1); + regmap_write(adv7511->regmap_cec, + ADV7511_REG_CEC_RX_BUFFERS + offset, 0); + cec_received_msg(adv7511->cec_adap, &msg); +} + +static int adv7511_cec_adap_enable(struct cec_adapter *adap, bool enable) +{ + struct adv7511 *adv7511 = cec_get_drvdata(adap); + unsigned int offset = adv7511->type == ADV7533 ? + ADV7533_REG_CEC_OFFSET : 0; + + if (adv7511->i2c_cec == NULL) + return -EIO; + + if (!adv7511->cec_enabled_adap && enable) { + /* power up cec section */ + regmap_update_bits(adv7511->regmap_cec, + ADV7511_REG_CEC_CLK_DIV + offset, + 0x03, 0x01); + /* legacy mode and clear all rx buffers */ + regmap_write(adv7511->regmap_cec, + ADV7511_REG_CEC_RX_BUFFERS + offset, 0x07); + regmap_write(adv7511->regmap_cec, + ADV7511_REG_CEC_RX_BUFFERS + offset, 0); + /* initially disable tx */ + regmap_update_bits(adv7511->regmap_cec, + ADV7511_REG_CEC_TX_ENABLE + offset, 1, 0); + /* enabled irqs: */ + /* tx: ready */ + /* tx: arbitration lost */ + /* tx: retry timeout */ + /* rx: ready 1 */ + regmap_update_bits(adv7511->regmap, + ADV7511_REG_INT_ENABLE(1), 0x3f, + ADV7511_INT1_CEC_MASK); + } else if (adv7511->cec_enabled_adap && !enable) { + regmap_update_bits(adv7511->regmap, + ADV7511_REG_INT_ENABLE(1), 0x3f, 0); + /* disable address mask 1-3 */ + regmap_update_bits(adv7511->regmap_cec, + ADV7511_REG_CEC_LOG_ADDR_MASK + offset, + 0x70, 0x00); + /* power down cec section */ + regmap_update_bits(adv7511->regmap_cec, + ADV7511_REG_CEC_CLK_DIV + offset, + 0x03, 0x00); + adv7511->cec_valid_addrs = 0; + } + adv7511->cec_enabled_adap = enable; + return 0; +} + +static int adv7511_cec_adap_log_addr(struct cec_adapter *adap, u8 addr) +{ + struct adv7511 *adv7511 = cec_get_drvdata(adap); + unsigned int offset = adv7511->type == ADV7533 ? + ADV7533_REG_CEC_OFFSET : 0; + unsigned int i, free_idx = ADV7511_MAX_ADDRS; + + if (!adv7511->cec_enabled_adap) + return addr == CEC_LOG_ADDR_INVALID ? 0 : -EIO; + + if (addr == CEC_LOG_ADDR_INVALID) { + regmap_update_bits(adv7511->regmap_cec, + ADV7511_REG_CEC_LOG_ADDR_MASK + offset, + 0x70, 0); + adv7511->cec_valid_addrs = 0; + return 0; + } + + for (i = 0; i < ADV7511_MAX_ADDRS; i++) { + bool is_valid = adv7511->cec_valid_addrs & (1 << i); + + if (free_idx == ADV7511_MAX_ADDRS && !is_valid) + free_idx = i; + if (is_valid && adv7511->cec_addr[i] == addr) + return 0; + } + if (i == ADV7511_MAX_ADDRS) { + i = free_idx; + if (i == ADV7511_MAX_ADDRS) + return -ENXIO; + } + adv7511->cec_addr[i] = addr; + adv7511->cec_valid_addrs |= 1 << i; + + switch (i) { + case 0: + /* enable address mask 0 */ + regmap_update_bits(adv7511->regmap_cec, + ADV7511_REG_CEC_LOG_ADDR_MASK + offset, + 0x10, 0x10); + /* set address for mask 0 */ + regmap_update_bits(adv7511->regmap_cec, + ADV7511_REG_CEC_LOG_ADDR_0_1 + offset, + 0x0f, addr); + break; + case 1: + /* enable address mask 1 */ + regmap_update_bits(adv7511->regmap_cec, + ADV7511_REG_CEC_LOG_ADDR_MASK + offset, + 0x20, 0x20); + /* set address for mask 1 */ + regmap_update_bits(adv7511->regmap_cec, + ADV7511_REG_CEC_LOG_ADDR_0_1 + offset, + 0xf0, addr << 4); + break; + case 2: + /* enable address mask 2 */ + regmap_update_bits(adv7511->regmap_cec, + ADV7511_REG_CEC_LOG_ADDR_MASK + offset, + 0x40, 0x40); + /* set address for mask 1 */ + regmap_update_bits(adv7511->regmap_cec, + ADV7511_REG_CEC_LOG_ADDR_2 + offset, + 0x0f, addr); + break; + } + return 0; +} + +static int adv7511_cec_adap_transmit(struct cec_adapter *adap, u8 attempts, + u32 signal_free_time, struct cec_msg *msg) +{ + struct adv7511 *adv7511 = cec_get_drvdata(adap); + unsigned int offset = adv7511->type == ADV7533 ? + ADV7533_REG_CEC_OFFSET : 0; + u8 len = msg->len; + unsigned int i; + + /* + * The number of retries is the number of attempts - 1, but retry + * at least once. It's not clear if a value of 0 is allowed, so + * let's do at least one retry. + */ + regmap_update_bits(adv7511->regmap_cec, + ADV7511_REG_CEC_TX_RETRY + offset, + 0x70, max(1, attempts - 1) << 4); + + /* blocking, clear cec tx irq status */ + regmap_update_bits(adv7511->regmap, ADV7511_REG_INT(1), 0x38, 0x38); + + /* write data */ + for (i = 0; i < len; i++) + regmap_write(adv7511->regmap_cec, i + offset, msg->msg[i]); + + /* set length (data + header) */ + regmap_write(adv7511->regmap_cec, + ADV7511_REG_CEC_TX_FRAME_LEN + offset, len); + /* start transmit, enable tx */ + regmap_write(adv7511->regmap_cec, + ADV7511_REG_CEC_TX_ENABLE + offset, 0x01); + return 0; +} + +const struct cec_adap_ops adv7511_cec_adap_ops = { + .adap_enable = adv7511_cec_adap_enable, + .adap_log_addr = adv7511_cec_adap_log_addr, + .adap_transmit = adv7511_cec_adap_transmit, +}; + +void adv7511_cec_init(struct adv7511 *adv7511, unsigned int offset) +{ + regmap_write(adv7511->regmap, ADV7511_REG_CEC_CTRL + offset, 0); + /* cec soft reset */ + regmap_write(adv7511->regmap_cec, + ADV7511_REG_CEC_SOFT_RESET + offset, 0x01); + regmap_write(adv7511->regmap_cec, + ADV7511_REG_CEC_SOFT_RESET + offset, 0x00); + + /* legacy mode */ + regmap_write(adv7511->regmap_cec, + ADV7511_REG_CEC_RX_BUFFERS + offset, 0x00); + + regmap_write(adv7511->regmap_cec, + ADV7511_REG_CEC_CLK_DIV + offset, + ((adv7511->cec_clk_freq / 750000) - 1) << 2); +} + +int adv7511_cec_parse_dt(struct device *dev, struct adv7511 *adv7511) +{ + adv7511->cec_clk = devm_clk_get(dev, "cec"); + if (IS_ERR(adv7511->cec_clk)) { + int ret = PTR_ERR(adv7511->cec_clk); + + adv7511->cec_clk = NULL; + return ret; + } + clk_prepare_enable(adv7511->cec_clk); + adv7511->cec_clk_freq = clk_get_rate(adv7511->cec_clk); + return 0; +} diff --git a/drivers/gpu/drm/bridge/adv7511/adv7511_drv.c b/drivers/gpu/drm/bridge/adv7511/adv7511_drv.c index f75ab6278113..1bef33e99358 100644 --- a/drivers/gpu/drm/bridge/adv7511/adv7511_drv.c +++ b/drivers/gpu/drm/bridge/adv7511/adv7511_drv.c @@ -11,12 +11,15 @@ #include #include #include +#include #include #include #include #include +#include + #include "adv7511.h" /* ADI recommended values for proper operation. */ @@ -339,8 +342,10 @@ static void __adv7511_power_on(struct adv7511 *adv7511) */ regmap_write(adv7511->regmap, ADV7511_REG_INT_ENABLE(0), ADV7511_INT0_EDID_READY | ADV7511_INT0_HPD); - regmap_write(adv7511->regmap, ADV7511_REG_INT_ENABLE(1), - ADV7511_INT1_DDC_ERROR); + regmap_update_bits(adv7511->regmap, + ADV7511_REG_INT_ENABLE(1), + ADV7511_INT1_DDC_ERROR, + ADV7511_INT1_DDC_ERROR); } /* @@ -376,6 +381,9 @@ static void __adv7511_power_off(struct adv7511 *adv7511) regmap_update_bits(adv7511->regmap, ADV7511_REG_POWER, ADV7511_POWER_POWER_DOWN, ADV7511_POWER_POWER_DOWN); + regmap_update_bits(adv7511->regmap, + ADV7511_REG_INT_ENABLE(1), + ADV7511_INT1_DDC_ERROR, 0); regcache_mark_dirty(adv7511->regmap); } @@ -426,6 +434,8 @@ static void adv7511_hpd_work(struct work_struct *work) if (adv7511->connector.status != status) { adv7511->connector.status = status; + if (status == connector_status_disconnected) + cec_phys_addr_invalidate(adv7511->cec_adap); drm_kms_helper_hotplug_event(adv7511->connector.dev); } } @@ -456,6 +466,10 @@ static int adv7511_irq_process(struct adv7511 *adv7511, bool process_hpd) wake_up_all(&adv7511->wq); } +#ifdef CONFIG_DRM_I2C_ADV7511_CEC + adv7511_cec_irq_process(adv7511, irq1); +#endif + return 0; } @@ -599,6 +613,8 @@ static int adv7511_get_modes(struct adv7511 *adv7511, adv7511_set_config_csc(adv7511, connector, adv7511->rgb); + cec_s_phys_addr_from_edid(adv7511->cec_adap, edid); + return count; } @@ -920,6 +936,84 @@ static void adv7511_uninit_regulators(struct adv7511 *adv) regulator_bulk_disable(adv->num_supplies, adv->supplies); } +static bool adv7533_cec_register_volatile(struct device *dev, unsigned int reg) +{ + switch (reg) { + case ADV7511_REG_CEC_RX_FRAME_HDR + ADV7533_REG_CEC_OFFSET: + case ADV7511_REG_CEC_RX_FRAME_DATA0 + ADV7533_REG_CEC_OFFSET... + ADV7511_REG_CEC_RX_FRAME_DATA0 + ADV7533_REG_CEC_OFFSET + 14: + case ADV7511_REG_CEC_RX_FRAME_LEN + ADV7533_REG_CEC_OFFSET: + case ADV7511_REG_CEC_RX_BUFFERS + ADV7533_REG_CEC_OFFSET: + case ADV7511_REG_CEC_TX_LOW_DRV_CNT + ADV7533_REG_CEC_OFFSET: + return true; + } + + return false; +} + +static const struct regmap_config adv7533_cec_regmap_config = { + .reg_bits = 8, + .val_bits = 8, + + .max_register = 0xff, + .cache_type = REGCACHE_RBTREE, + .volatile_reg = adv7533_cec_register_volatile, +}; + +static bool adv7511_cec_register_volatile(struct device *dev, unsigned int reg) +{ + switch (reg) { + case ADV7511_REG_CEC_RX_FRAME_HDR: + case ADV7511_REG_CEC_RX_FRAME_DATA0... + ADV7511_REG_CEC_RX_FRAME_DATA0 + 14: + case ADV7511_REG_CEC_RX_FRAME_LEN: + case ADV7511_REG_CEC_RX_BUFFERS: + case ADV7511_REG_CEC_TX_LOW_DRV_CNT: + return true; + } + + return false; +} + +static const struct regmap_config adv7511_cec_regmap_config = { + .reg_bits = 8, + .val_bits = 8, + + .max_register = 0xff, + .cache_type = REGCACHE_RBTREE, + .volatile_reg = adv7511_cec_register_volatile, +}; + +static int adv7511_init_cec_regmap(struct adv7511 *adv) +{ + int ret; + + adv->i2c_cec = i2c_new_dummy(adv->i2c_main->adapter, + adv->i2c_main->addr - 1); + if (!adv->i2c_cec) + return -ENOMEM; + + adv->regmap_cec = devm_regmap_init_i2c(adv->i2c_cec, + adv->type == ADV7533 ? + &adv7533_cec_regmap_config : + &adv7511_cec_regmap_config); + if (IS_ERR(adv->regmap_cec)) { + ret = PTR_ERR(adv->regmap_cec); + goto err; + } + + if (adv->type == ADV7533) { + ret = adv7533_patch_cec_registers(adv); + if (ret) + goto err; + } + + return 0; +err: + i2c_unregister_device(adv->i2c_cec); + return ret; +} + static int adv7511_parse_dt(struct device_node *np, struct adv7511_link_config *config) { @@ -1010,6 +1104,7 @@ static int adv7511_probe(struct i2c_client *i2c, const struct i2c_device_id *id) struct device *dev = &i2c->dev; unsigned int main_i2c_addr = i2c->addr << 1; unsigned int edid_i2c_addr = main_i2c_addr + 4; + unsigned int offset; unsigned int val; int ret; @@ -1035,6 +1130,7 @@ static int adv7511_probe(struct i2c_client *i2c, const struct i2c_device_id *id) ret = adv7511_parse_dt(dev->of_node, &link_config); else ret = adv7533_parse_dt(dev->of_node, adv7511); + if (ret) return ret; @@ -1093,11 +1189,9 @@ static int adv7511_probe(struct i2c_client *i2c, const struct i2c_device_id *id) goto uninit_regulators; } - if (adv7511->type == ADV7533) { - ret = adv7533_init_cec(adv7511); - if (ret) - goto err_i2c_unregister_edid; - } + ret = adv7511_init_cec_regmap(adv7511); + if (ret) + goto err_i2c_unregister_edid; INIT_WORK(&adv7511->hpd_work, adv7511_hpd_work); @@ -1112,10 +1206,6 @@ static int adv7511_probe(struct i2c_client *i2c, const struct i2c_device_id *id) goto err_unregister_cec; } - /* CEC is unused for now */ - regmap_write(adv7511->regmap, ADV7511_REG_CEC_CTRL, - ADV7511_CEC_CTRL_POWER_DOWN); - adv7511_power_off(adv7511); i2c_set_clientdata(i2c, adv7511); @@ -1134,10 +1224,39 @@ static int adv7511_probe(struct i2c_client *i2c, const struct i2c_device_id *id) adv7511_audio_init(dev, adv7511); + offset = adv7511->type == ADV7533 ? ADV7533_REG_CEC_OFFSET : 0; + +#ifdef CONFIG_DRM_I2C_ADV7511_CEC + ret = adv7511_cec_parse_dt(dev, adv7511); + if (ret) + goto err_unregister_cec; + + adv7511->cec_adap = cec_allocate_adapter(&adv7511_cec_adap_ops, + adv7511, dev_name(&i2c->dev), CEC_CAP_TRANSMIT | + CEC_CAP_LOG_ADDRS | CEC_CAP_PASSTHROUGH | CEC_CAP_RC, + ADV7511_MAX_ADDRS); + ret = PTR_ERR_OR_ZERO(adv7511->cec_adap); + if (ret) + goto err_unregister_cec; + + adv7511_cec_init(adv7511, offset); + + ret = cec_register_adapter(adv7511->cec_adap, &i2c->dev); + if (ret) { + cec_delete_adapter(adv7511->cec_adap); + goto err_unregister_cec; + } +#else + regmap_write(adv7511->regmap, ADV7511_REG_CEC_CTRL + offset, + ADV7511_CEC_CTRL_POWER_DOWN); +#endif + return 0; err_unregister_cec: - adv7533_uninit_cec(adv7511); + i2c_unregister_device(adv7511->i2c_cec); + if (adv7511->cec_clk) + clk_disable_unprepare(adv7511->cec_clk); err_i2c_unregister_edid: i2c_unregister_device(adv7511->i2c_edid); uninit_regulators: @@ -1150,10 +1269,11 @@ static int adv7511_remove(struct i2c_client *i2c) { struct adv7511 *adv7511 = i2c_get_clientdata(i2c); - if (adv7511->type == ADV7533) { + if (adv7511->type == ADV7533) adv7533_detach_dsi(adv7511); - adv7533_uninit_cec(adv7511); - } + i2c_unregister_device(adv7511->i2c_cec); + if (adv7511->cec_clk) + clk_disable_unprepare(adv7511->cec_clk); adv7511_uninit_regulators(adv7511); @@ -1161,6 +1281,8 @@ static int adv7511_remove(struct i2c_client *i2c) adv7511_audio_exit(adv7511); + cec_unregister_adapter(adv7511->cec_adap); + i2c_unregister_device(adv7511->i2c_edid); kfree(adv7511->edid); diff --git a/drivers/gpu/drm/bridge/adv7511/adv7533.c b/drivers/gpu/drm/bridge/adv7511/adv7533.c index ac804f81e2f6..0e173abb913c 100644 --- a/drivers/gpu/drm/bridge/adv7511/adv7533.c +++ b/drivers/gpu/drm/bridge/adv7511/adv7533.c @@ -145,37 +145,11 @@ int adv7533_patch_registers(struct adv7511 *adv) ARRAY_SIZE(adv7533_fixed_registers)); } -void adv7533_uninit_cec(struct adv7511 *adv) +int adv7533_patch_cec_registers(struct adv7511 *adv) { - i2c_unregister_device(adv->i2c_cec); -} - -int adv7533_init_cec(struct adv7511 *adv) -{ - int ret; - - adv->i2c_cec = i2c_new_dummy(adv->i2c_main->adapter, - adv->i2c_main->addr - 1); - if (!adv->i2c_cec) - return -ENOMEM; - - adv->regmap_cec = devm_regmap_init_i2c(adv->i2c_cec, - &adv7533_cec_regmap_config); - if (IS_ERR(adv->regmap_cec)) { - ret = PTR_ERR(adv->regmap_cec); - goto err; - } - - ret = regmap_register_patch(adv->regmap_cec, + return regmap_register_patch(adv->regmap_cec, adv7533_cec_fixed_registers, ARRAY_SIZE(adv7533_cec_fixed_registers)); - if (ret) - goto err; - - return 0; -err: - adv7533_uninit_cec(adv); - return ret; } int adv7533_attach_dsi(struct adv7511 *adv)