From patchwork Fri Sep 29 14:30:45 2023 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Abdel Alkuor X-Patchwork-Id: 146705 Return-Path: Delivered-To: ouuuleilei@gmail.com Received: by 2002:a59:cae8:0:b0:403:3b70:6f57 with SMTP id r8csp4225111vqu; Fri, 29 Sep 2023 11:20:15 -0700 (PDT) X-Google-Smtp-Source: AGHT+IHsW26OIrsn+uxO71gSAnCZMmnUXOhSDXJYX1PWdbBlsDX/bMyKUQBVPMbpLtDS59ABxjnd X-Received: by 2002:a9d:6d98:0:b0:6b8:6785:ed0b with SMTP id x24-20020a9d6d98000000b006b86785ed0bmr4703265otp.30.1696011615107; Fri, 29 Sep 2023 11:20:15 -0700 (PDT) ARC-Seal: i=1; a=rsa-sha256; t=1696011615; cv=none; d=google.com; s=arc-20160816; b=MWmOvXlohWfzI6XSK0sLkzDz4EH6hW96AZNDyvnjtRILu0lW7gJprtJtQa84sIYUnm duMqht3gb0DzfBpBtyZpRzgkR7HacXRS4lN4gCqs1BwG9P52+IafFRl3/DExqwm2Iwzw DZdAN2kk5uMZUfnGikGGTSFNxmkS61G+hwu875Zm1OelQPUNpIb+As4CnR1eDun6BgiY dmvYywmuXadaaTmLxcBk9lSBsTLy1PCKLrCtLSa9mLMnMb09jYluTLfKGLHhUu/7j8cz xncBldijgEsJGNXHVBF011HLF40KXDfr14paXS/hf5am8tvcrB+Iq/aJBYycRMVxveCa ADLA== ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d=google.com; s=arc-20160816; h=list-id:precedence:content-transfer-encoding:mime-version :references:in-reply-to:message-id:date:subject:cc:to:from :dkim-signature; bh=Rq9tzUXgeqKnSzI772mYD7hi8W3HZqTNCYQs8mjvCnw=; fh=NDkcCmflgZsGSiSjskszThji4SYIrQ1hJIxt3Zy9sPE=; b=PTKBob5p74Zw+juesqSi4crfQlPYI2cu/5+Wm/JGIJ5XbYWl5gD2QvsFdBQGMdIUhf wxdNRn7R7p9v98/KHbYqCCCWeC4B3yr27TlMh0TbB3E2cElh/MpgsEpHN0aVynjZNicE 62DWSGEBZ7th4MaHXXApINDXU0AZNnu5GbvRsROcpdZX6ruqN0/gZpHK0w1LKfISZX4H //U3Qpe/I4YCNMUV0nK4zPFyuREbSLIi3I4aPWIIy7LZz7kkCJ4wxfkALSkhIuGV7e6j 4WA8PRgfuBZYUjusFJ3SGYwvwc+OvulSyQzuIxIuB4PU+Knk9suzDRc4CuAa6s9b1GbC PbwQ== ARC-Authentication-Results: i=1; mx.google.com; dkim=pass header.i=@gmail.com header.s=20230601 header.b=JUX4vub9; spf=pass (google.com: domain of linux-kernel-owner@vger.kernel.org designates 23.128.96.37 as permitted sender) smtp.mailfrom=linux-kernel-owner@vger.kernel.org; dmarc=pass (p=NONE sp=QUARANTINE dis=NONE) header.from=gmail.com Received: from snail.vger.email (snail.vger.email. [23.128.96.37]) by mx.google.com with ESMTPS id 64-20020a630043000000b005859a90c58csi2659200pga.772.2023.09.29.11.20.14 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Fri, 29 Sep 2023 11:20:15 -0700 (PDT) Received-SPF: pass (google.com: domain of linux-kernel-owner@vger.kernel.org designates 23.128.96.37 as permitted sender) client-ip=23.128.96.37; Authentication-Results: mx.google.com; dkim=pass header.i=@gmail.com header.s=20230601 header.b=JUX4vub9; spf=pass (google.com: domain of linux-kernel-owner@vger.kernel.org designates 23.128.96.37 as permitted sender) smtp.mailfrom=linux-kernel-owner@vger.kernel.org; dmarc=pass (p=NONE sp=QUARANTINE dis=NONE) header.from=gmail.com Received: from out1.vger.email (depot.vger.email [IPv6:2620:137:e000::3:0]) by snail.vger.email (Postfix) with ESMTP id 4CDFE82F9258; Fri, 29 Sep 2023 07:32:43 -0700 (PDT) X-Virus-Status: Clean X-Virus-Scanned: clamav-milter 0.103.10 at snail.vger.email Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S233685AbjI2Ocb (ORCPT + 20 others); Fri, 29 Sep 2023 10:32:31 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:35422 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S233585AbjI2OcM (ORCPT ); Fri, 29 Sep 2023 10:32:12 -0400 Received: from mail-ej1-x636.google.com (mail-ej1-x636.google.com [IPv6:2a00:1450:4864:20::636]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id CEF241B2; Fri, 29 Sep 2023 07:32:04 -0700 (PDT) Received: by mail-ej1-x636.google.com with SMTP id a640c23a62f3a-99c1c66876aso1921424266b.2; Fri, 29 Sep 2023 07:32:04 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20230601; t=1695997923; x=1696602723; darn=vger.kernel.org; h=content-transfer-encoding:mime-version:references:in-reply-to :message-id:date:subject:cc:to:from:from:to:cc:subject:date :message-id:reply-to; bh=Rq9tzUXgeqKnSzI772mYD7hi8W3HZqTNCYQs8mjvCnw=; b=JUX4vub9mPGvBzDA5SZc6S3VE+tkalENtZFJrVtbOFaaQrFA2c0phF0iskzQRo7zvn gj16qkpe/qwwUj6YttDHd+y/JI+vevXsxs9tG4IYM9nn5p/xXCvrJJHfzb+Q82DHgY2V pXlNxtj2hCueB9xT1TPwRRUCl05rZQVKAmHCqzA4FTsWAUWRk+AYQgnQuKujQXibr1bM e4Ye83QoS8oFpecv/C1PKCWI2+HpomUyikm0UDJ3nUyFxSuaLP3aYv1t2jiaEmJXbKBa yr2kdcEU179VqJslviGVaiSRR/olis9NWwamLjcOC/iTXM/Os+ly1C9ZCOI4kLZRRyG5 oxxQ== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20230601; t=1695997923; x=1696602723; h=content-transfer-encoding:mime-version:references:in-reply-to :message-id:date:subject:cc:to:from:x-gm-message-state:from:to:cc :subject:date:message-id:reply-to; bh=Rq9tzUXgeqKnSzI772mYD7hi8W3HZqTNCYQs8mjvCnw=; b=my4/8OALs2scublhjh7AngxgvsUX3Yi5QwlaSVNIRTnZVRXAs5pNuVFbgkCo0goYAm UGSwswMofT0CcEk7ixu/JtnmqVYHhOQ9UgLioV5FAYJzOAizWjCwgoIKl1wWB0JPLHFj Bh9PMUgFW3FMCXFzlEzlYjUgL3yPhPeUJ/o6cncylknLZXFTKwrEZ70/Os0Adn66Gk8W Wfs6ibsat4Cdqa2+0BFBbiqd/8+0/n9hJLPvMnTNCbmu5BLN3IRwycTXQFM5bwuUIIMv 9dlMhqytBnIv11jorrSZow3swihO6luXnbkb5Vek7Paf5pBX0Tu6S6uG0RLY2cS1lBZ6 PvMA== X-Gm-Message-State: AOJu0YwM4l9vVTAebde8yKIcVhFkUBfhN+xGDjiS0cXnB/7yu/3mDl4S ySkFXw4Kv6DK4gTI3t8h8Ow= X-Received: by 2002:a17:906:9c9:b0:9ae:50e3:7e40 with SMTP id r9-20020a17090609c900b009ae50e37e40mr4068372eje.52.1695997922636; Fri, 29 Sep 2023 07:32:02 -0700 (PDT) Received: from primary.. ([212.34.12.50]) by smtp.gmail.com with ESMTPSA id a7-20020a170906670700b0099293cdbc98sm12660105ejp.145.2023.09.29.07.32.00 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Fri, 29 Sep 2023 07:32:02 -0700 (PDT) From: Abdel Alkuor To: heikki.krogerus@linux.intel.com, krzysztof.kozlowski+dt@linaro.org, bryan.odonoghue@linaro.org Cc: gregkh@linuxfoundation.org, linux-usb@vger.kernel.org, linux-kernel@vger.kernel.org, ryan.eleceng@gmail.com, robh+dt@kernel.org, conor+dt@kernel.org, devicetree@vger.kernel.org, Abdel Alkuor Subject: [PATCH v8 04/14] USB: typec: tps6598x: Load TPS25750 patch bundle Date: Fri, 29 Sep 2023 10:30:45 -0400 Message-Id: <20230929143055.31360-5-alkuor@gmail.com> X-Mailer: git-send-email 2.34.1 In-Reply-To: <20230929143055.31360-1-alkuor@gmail.com> References: <20230929143055.31360-1-alkuor@gmail.com> MIME-Version: 1.0 X-Spam-Status: No, score=-0.6 required=5.0 tests=BAYES_00,DKIM_SIGNED, DKIM_VALID,DKIM_VALID_AU,DKIM_VALID_EF,FREEMAIL_FROM, RCVD_IN_DNSWL_NONE,RCVD_IN_SORBS_WEB,SPF_HELO_NONE,SPF_PASS autolearn=no autolearn_force=no version=3.4.6 X-Spam-Checker-Version: SpamAssassin 3.4.6 (2021-04-09) on lindbergh.monkeyblade.net Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org X-Greylist: Sender passed SPF test, not delayed by milter-greylist-4.6.4 (snail.vger.email [0.0.0.0]); Fri, 29 Sep 2023 07:32:43 -0700 (PDT) X-getmail-retrieved-from-mailbox: INBOX X-GMAIL-THRID: 1778397075323663271 X-GMAIL-MSGID: 1778397075323663271 From: Abdel Alkuor TPS25750 controller requires a binary to be loaded with a configuration binary by an EEPROM or a host. Appling a patch bundling using a host is implemented based on the flow diagram pg.62 in TPS25750 host interface manual. https://www.ti.com/lit/ug/slvuc05a/slvuc05a.pdf The flow diagram can be summarized as following: - Start the patch loading sequence with patch bundle information by executing PBMs - Write the whole patch at once - When writing the patch fails, execute PBMe which instructs the PD controller to end the patching process - After writing the patch successfully, execute PBMc which verifies the patch integrity and applies the patch internally - Wait for the device to switch into APP mode (normal operation) The execuation flow diagram polls the events register and then polls the corresponding register related to the event as well before advancing to the next state. Polling the events register is a redundant step, in this implementation only the corresponding register related to the event is polled. Signed-off-by: Abdel Alkuor --- Changes in v8: - Return mode when mode is checked - Use device_is_compatible instead of of_device_is_compatible Changes in v7: - Add driver name to commit subject Changes in v6: - Don't check VID for tps25750 as the VID register doesn't exist - Remove is_tps25750 flag from tps6598x struct - Get patch address from reg property Changes in v5: - Incorporating tps25750 into tps6598x driver drivers/usb/typec/tipd/core.c | 263 ++++++++++++++++++++++++++++++++-- 1 file changed, 255 insertions(+), 8 deletions(-) diff --git a/drivers/usb/typec/tipd/core.c b/drivers/usb/typec/tipd/core.c index c5bbf03cb74a..2e7b9eafaf04 100644 --- a/drivers/usb/typec/tipd/core.c +++ b/drivers/usb/typec/tipd/core.c @@ -17,6 +17,7 @@ #include #include #include +#include #include "tps6598x.h" #include "trace.h" @@ -43,6 +44,23 @@ /* TPS_REG_SYSTEM_CONF bits */ #define TPS_SYSCONF_PORTINFO(c) ((c) & 7) +/* + * BPMs task timeout, recommended 5 seconds + * pg.48 TPS2575 Host Interface Technical Reference + * Manual (Rev. A) + * https://www.ti.com/lit/ug/slvuc05a/slvuc05a.pdf + */ +#define TPS_BUNDLE_TIMEOUT 0x32 + +/* BPMs return code */ +#define TPS_TASK_BPMS_INVALID_BUNDLE_SIZE 0x4 +#define TPS_TASK_BPMS_INVALID_SLAVE_ADDR 0x5 +#define TPS_TASK_BPMS_INVALID_TIMEOUT 0x6 + +/* PBMc data out */ +#define TPS_PBMC_RC 0 /* Return code */ +#define TPS_PBMC_DPCS 2 /* device patch complete status */ + enum { TPS_PORTINFO_SINK, TPS_PORTINFO_SINK_ACCESSORY, @@ -595,13 +613,15 @@ static int tps6598x_check_mode(struct tps6598x *tps) if (ret) return ret; - switch (match_string(modes, ARRAY_SIZE(modes), mode)) { + ret = match_string(modes, ARRAY_SIZE(modes), mode); + + switch (ret) { case TPS_MODE_APP: case TPS_MODE_PTCH: - return 0; + return ret; case TPS_MODE_BOOT: dev_warn(tps->dev, "dead-battery condition\n"); - return 0; + return ret; case TPS_MODE_BIST: case TPS_MODE_DISC: default: @@ -711,6 +731,213 @@ static int devm_tps6598_psy_register(struct tps6598x *tps) return PTR_ERR_OR_ZERO(tps->psy); } +static int +tps25750_write_firmware(struct tps6598x *tps, + u8 bpms_addr, const u8 *data, size_t len) +{ + struct i2c_client *client = to_i2c_client(tps->dev); + int ret; + u8 slave_addr; + int timeout; + + slave_addr = client->addr; + timeout = client->adapter->timeout; + + /* + * binary configuration size is around ~16Kbytes + * which might take some time to finish writing it + */ + client->adapter->timeout = msecs_to_jiffies(5000); + client->addr = bpms_addr; + + ret = regmap_raw_write(tps->regmap, data[0], &data[1], len - 1); + + client->addr = slave_addr; + client->adapter->timeout = timeout; + + return ret; +} + +static int +tps25750_exec_pbms(struct tps6598x *tps, u8 *in_data, size_t in_len) +{ + int ret; + u8 rc; + + ret = tps6598x_exec_cmd_tmo(tps, "PBMs", in_len, in_data, + sizeof(rc), &rc, 4000, 0); + if (ret) + return ret; + + switch (rc) { + case TPS_TASK_BPMS_INVALID_BUNDLE_SIZE: + dev_err(tps->dev, "%s: invalid fw size\n", __func__); + return -EINVAL; + case TPS_TASK_BPMS_INVALID_SLAVE_ADDR: + dev_err(tps->dev, "%s: invalid slave address\n", __func__); + return -EINVAL; + case TPS_TASK_BPMS_INVALID_TIMEOUT: + dev_err(tps->dev, "%s: timed out\n", __func__); + return -ETIMEDOUT; + default: + break; + } + + return 0; +} + +static int tps25750_abort_patch_process(struct tps6598x *tps) +{ + int ret; + + ret = tps6598x_exec_cmd(tps, "PBMe", 0, NULL, 0, NULL); + if (ret) + return ret; + + ret = tps6598x_check_mode(tps); + if (ret != TPS_MODE_PTCH) + dev_err(tps->dev, "failed to switch to \"PTCH\" mode\n"); + + return ret; +} + +static int tps25750_start_patch_burst_mode(struct tps6598x *tps) +{ + int ret; + const struct firmware *fw; + const char *firmware_name; + struct { + u32 fw_size; + u8 addr; + u8 timeout; + } __packed bpms_data; + u32 addr; + struct device_node *np = tps->dev->of_node; + + ret = device_property_read_string(tps->dev, "firmware-name", + &firmware_name); + if (ret) + return ret; + + ret = request_firmware(&fw, firmware_name, tps->dev); + if (ret) { + dev_err(tps->dev, "failed to retrieve \"%s\"\n", firmware_name); + return ret; + } + + if (fw->size == 0) { + ret = -EINVAL; + goto release_fw; + } + + ret = of_property_match_string(np, "reg-names", "patch-address"); + if (ret < 0) { + dev_err(tps->dev, "failed to get patch-address %d\n", ret); + return ret; + } + + ret = of_property_read_u32_index(np, "reg", ret, &addr); + if (ret) + return ret; + + if (addr == 0 || (addr >= 0x20 && addr <= 0x23)) { + dev_err(tps->dev, "wrong patch address %u\n", addr); + return -EINVAL; + } + + bpms_data.addr = (u8)addr; + bpms_data.fw_size = fw->size; + bpms_data.timeout = TPS_BUNDLE_TIMEOUT; + + ret = tps25750_exec_pbms(tps, (u8 *)&bpms_data, sizeof(bpms_data)); + if (ret) + goto release_fw; + + ret = tps25750_write_firmware(tps, bpms_data.addr, fw->data, fw->size); + if (ret) { + dev_err(tps->dev, "Failed to write patch %s of %zu bytes\n", + firmware_name, fw->size); + goto release_fw; + } + + /* + * A delay of 500us is required after the firmware is written + * based on pg.62 in tps6598x Host Interface Technical + * Reference Manual + * https://www.ti.com/lit/ug/slvuc05a/slvuc05a.pdf + */ + udelay(500); + +release_fw: + release_firmware(fw); + + return ret; +} + +static int tps25750_complete_patch_process(struct tps6598x *tps) +{ + int ret; + u8 out_data[40]; + u8 dummy[2] = { }; + + /* + * Without writing something to DATA_IN, this command would + * return an error + */ + ret = tps6598x_exec_cmd_tmo(tps, "PBMc", sizeof(dummy), dummy, + sizeof(out_data), out_data, 2000, 20); + if (ret) + return ret; + + if (out_data[TPS_PBMC_RC]) { + dev_err(tps->dev, + "%s: pbmc failed: %u\n", __func__, + out_data[TPS_PBMC_RC]); + return -EIO; + } + + if (out_data[TPS_PBMC_DPCS]) { + dev_err(tps->dev, + "%s: failed device patch complete status: %u\n", + __func__, out_data[TPS_PBMC_DPCS]); + return -EIO; + } + + return 0; +} + +static int tps25750_apply_patch(struct tps6598x *tps) +{ + int ret; + unsigned long timeout; + + ret = tps25750_start_patch_burst_mode(tps); + if (ret) { + tps25750_abort_patch_process(tps); + return ret; + } + + ret = tps25750_complete_patch_process(tps); + if (ret) + return ret; + + timeout = jiffies + msecs_to_jiffies(1000); + + do { + ret = tps6598x_check_mode(tps); + if (ret < 0) + return ret; + + if (time_is_before_jiffies(timeout)) + return -ETIMEDOUT; + + } while (ret != TPS_MODE_APP); + + dev_info(tps->dev, "controller switched to \"APP\" mode\n"); + + return 0; +}; + static int tps6598x_probe(struct i2c_client *client) { irq_handler_t irq_handler = tps6598x_interrupt; @@ -723,6 +950,7 @@ static int tps6598x_probe(struct i2c_client *client) u32 vid; int ret; u64 mask1; + bool is_tps25750; tps = devm_kzalloc(&client->dev, sizeof(*tps), GFP_KERNEL); if (!tps) @@ -735,9 +963,12 @@ static int tps6598x_probe(struct i2c_client *client) if (IS_ERR(tps->regmap)) return PTR_ERR(tps->regmap); - ret = tps6598x_read32(tps, TPS_REG_VID, &vid); - if (ret < 0 || !vid) - return -ENODEV; + is_tps25750 = device_is_compatible(tps->dev, "ti,tps25750"); + if (!is_tps25750) { + ret = tps6598x_read32(tps, TPS_REG_VID, &vid); + if (ret < 0 || !vid) + return -ENODEV; + } /* * Checking can the adapter handle SMBus protocol. If it can not, the @@ -768,12 +999,18 @@ static int tps6598x_probe(struct i2c_client *client) tps->irq_handler = irq_handler; /* Make sure the controller has application firmware running */ ret = tps6598x_check_mode(tps); - if (ret) + if (ret < 0) return ret; + if (is_tps25750 && ret == TPS_MODE_PTCH) { + ret = tps25750_apply_patch(tps); + if (ret) + return ret; + } + ret = tps6598x_write64(tps, TPS_REG_INT_MASK1, mask1); if (ret) - return ret; + goto err_reset_controller; ret = tps6598x_read32(tps, TPS_REG_STATUS, &status); if (ret < 0) @@ -893,6 +1130,10 @@ static int tps6598x_probe(struct i2c_client *client) fwnode_handle_put(fwnode); err_clear_mask: tps6598x_write64(tps, TPS_REG_INT_MASK1, 0); +err_reset_controller: + /* Reset PD controller to remove any applied patch */ + if (is_tps25750) + tps6598x_exec_cmd_tmo(tps, "GAID", 0, NULL, 0, NULL, 2000, 0); return ret; } @@ -903,9 +1144,14 @@ static void tps6598x_remove(struct i2c_client *client) if (!client->irq) cancel_delayed_work_sync(&tps->wq_poll); + devm_free_irq(tps->dev, client->irq, tps); tps6598x_disconnect(tps, 0); typec_unregister_port(tps->port); usb_role_switch_put(tps->role_sw); + + /* Reset PD controller to remove any applied patch */ + if (device_is_compatible(tps->dev, "ti,tps25750")) + tps6598x_exec_cmd_tmo(tps, "GAID", 0, NULL, 0, NULL, 2000, 0); } static int __maybe_unused tps6598x_suspend(struct device *dev) @@ -948,6 +1194,7 @@ static const struct dev_pm_ops tps6598x_pm_ops = { static const struct of_device_id tps6598x_of_match[] = { { .compatible = "ti,tps6598x", }, { .compatible = "apple,cd321x", }, + { .compatible = "ti,tps25750", }, {} }; MODULE_DEVICE_TABLE(of, tps6598x_of_match);