From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id F39A7C433FE for ; Fri, 11 Nov 2022 01:29:54 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S232138AbiKKB3x (ORCPT ); Thu, 10 Nov 2022 20:29:53 -0500 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:48690 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S232111AbiKKB3u (ORCPT ); Thu, 10 Nov 2022 20:29:50 -0500 Received: from mga18.intel.com (mga18.intel.com [134.134.136.126]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id CD9296174F for ; Thu, 10 Nov 2022 17:29:49 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=intel.com; i=@intel.com; q=dns/txt; s=Intel; t=1668130189; x=1699666189; h=from:to:cc:subject:date:message-id:in-reply-to: references:mime-version:content-transfer-encoding; bh=xYiDQPgjBaCQBv2w5jPoqX2GJ5LdaCHQOFIhXNW5cGk=; b=cEdxJbt9AoElSDofCPWeTcJAtSr/8+sWJkHmaYL4OZYSDXskiQ65J0DZ TIQE4ODHaB0UvE/afL7BxUV2xHiPICGdIwon245ibWfEBH/GvL5IOlo6U m9MzqqtcCZrlPsKvF9BAwFTFwOEu54pbszL4dR+3jTAiRPY8sF2mih4T2 PVyp8sHrq9NFHbE6Spgfw69wdOfXb0a1XNYQSgXnjyedlzqxQxDio3aA2 3McHIcnqFAEvz0uzIhOqXV1cZMpVgYyZxPPzccpcyYOrfh0L6iH/GYqqi LYEUWuERasQ7etCnrAt8+zE2Fsk82mhgDaKTLLFqbs3sRszE1rPvt2WuY w==; X-IronPort-AV: E=McAfee;i="6500,9779,10527"; a="294847802" X-IronPort-AV: E=Sophos;i="5.96,155,1665471600"; d="scan'208";a="294847802" Received: from fmsmga001.fm.intel.com ([10.253.24.23]) by orsmga106.jf.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 10 Nov 2022 17:29:49 -0800 X-IronPort-AV: E=McAfee;i="6500,9779,10527"; a="780003220" X-IronPort-AV: E=Sophos;i="5.96,155,1665471600"; d="scan'208";a="780003220" Received: from bard-ubuntu.sh.intel.com ([10.239.185.57]) by fmsmga001-auth.fm.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 10 Nov 2022 17:29:47 -0800 From: Bard Liao To: alsa-devel@alsa-project.org, vkoul@kernel.org Cc: vinod.koul@linaro.org, linux-kernel@vger.kernel.org, pierre-louis.bossart@linux.intel.com, bard.liao@intel.com Subject: [PATCH 1/7] soundwire: intel: start using hw_ops Date: Fri, 11 Nov 2022 09:31:28 +0800 Message-Id: <20221111013135.38289-2-yung-chuan.liao@linux.intel.com> X-Mailer: git-send-email 2.25.1 In-Reply-To: <20221111013135.38289-1-yung-chuan.liao@linux.intel.com> References: <20221111013135.38289-1-yung-chuan.liao@linux.intel.com> MIME-Version: 1.0 Content-Transfer-Encoding: 8bit Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org From: Pierre-Louis Bossart Before introducing new hardware with completely different register spaces and programming sequences, we need to abstract some of the existing routines in hw_ops that will be platform-specific. For now we only use the 'cnl' ops - after the first Intel platform with SoundWire capabilities. Rather than one big intrusive patch, hw_ops are introduced in this patch so show the dependencies between drivers. Follow-up patches will introduce callbacks for debugfs, power and bus management. Signed-off-by: Pierre-Louis Bossart Reviewed-by: Rander Wang Signed-off-by: Bard Liao --- drivers/soundwire/intel.c | 38 +++++++++++++++++++++++------ drivers/soundwire/intel.h | 3 +++ drivers/soundwire/intel_init.c | 1 + include/linux/soundwire/sdw_intel.h | 15 ++++++++++++ sound/soc/sof/intel/hda.c | 2 ++ 5 files changed, 51 insertions(+), 8 deletions(-) diff --git a/drivers/soundwire/intel.c b/drivers/soundwire/intel.c index b9cb7e31ddb3..f88319f8ded4 100644 --- a/drivers/soundwire/intel.c +++ b/drivers/soundwire/intel.c @@ -745,10 +745,10 @@ static int intel_free_stream(struct sdw_intel *sdw, * bank switch routines */ -static int intel_pre_bank_switch(struct sdw_bus *bus) +static int intel_pre_bank_switch(struct sdw_intel *sdw) { - struct sdw_cdns *cdns = bus_to_cdns(bus); - struct sdw_intel *sdw = cdns_to_intel(cdns); + struct sdw_cdns *cdns = &sdw->cdns; + struct sdw_bus *bus = &cdns->bus; /* Write to register only for multi-link */ if (!bus->multi_link) @@ -759,10 +759,10 @@ static int intel_pre_bank_switch(struct sdw_bus *bus) return 0; } -static int intel_post_bank_switch(struct sdw_bus *bus) +static int intel_post_bank_switch(struct sdw_intel *sdw) { - struct sdw_cdns *cdns = bus_to_cdns(bus); - struct sdw_intel *sdw = cdns_to_intel(cdns); + struct sdw_cdns *cdns = &sdw->cdns; + struct sdw_bus *bus = &cdns->bus; void __iomem *shim = sdw->link_res->shim; int sync_reg, ret; @@ -1422,6 +1422,28 @@ static int intel_stop_bus(struct sdw_intel *sdw, bool clock_stop) return 0; } +const struct sdw_intel_hw_ops sdw_intel_cnl_hw_ops = { + .pre_bank_switch = intel_pre_bank_switch, + .post_bank_switch = intel_post_bank_switch, +}; +EXPORT_SYMBOL_NS(sdw_intel_cnl_hw_ops, SOUNDWIRE_INTEL); + +static int generic_pre_bank_switch(struct sdw_bus *bus) +{ + struct sdw_cdns *cdns = bus_to_cdns(bus); + struct sdw_intel *sdw = cdns_to_intel(cdns); + + return sdw->link_res->hw_ops->pre_bank_switch(sdw); +} + +static int generic_post_bank_switch(struct sdw_bus *bus) +{ + struct sdw_cdns *cdns = bus_to_cdns(bus); + struct sdw_intel *sdw = cdns_to_intel(cdns); + + return sdw->link_res->hw_ops->post_bank_switch(sdw); +} + static int sdw_master_read_intel_prop(struct sdw_bus *bus) { struct sdw_master_prop *prop = &bus->prop; @@ -1477,8 +1499,8 @@ static struct sdw_master_ops sdw_intel_ops = { .xfer_msg_defer = cdns_xfer_msg_defer, .reset_page_addr = cdns_reset_page_addr, .set_bus_conf = cdns_bus_conf, - .pre_bank_switch = intel_pre_bank_switch, - .post_bank_switch = intel_post_bank_switch, + .pre_bank_switch = generic_pre_bank_switch, + .post_bank_switch = generic_post_bank_switch, .read_ping_status = cdns_read_ping_status, }; diff --git a/drivers/soundwire/intel.h b/drivers/soundwire/intel.h index cd93a44dba9a..3170df76b411 100644 --- a/drivers/soundwire/intel.h +++ b/drivers/soundwire/intel.h @@ -7,6 +7,7 @@ /** * struct sdw_intel_link_res - Soundwire Intel link resource structure, * typically populated by the controller driver. + * @hw_ops: platform-specific ops * @mmio_base: mmio base of SoundWire registers * @registers: Link IO registers base * @shim: Audio shim pointer @@ -22,6 +23,8 @@ * @list: used to walk-through all masters exposed by the same controller */ struct sdw_intel_link_res { + const struct sdw_intel_hw_ops *hw_ops; + void __iomem *mmio_base; /* not strictly needed, useful for debug */ void __iomem *registers; void __iomem *shim; diff --git a/drivers/soundwire/intel_init.c b/drivers/soundwire/intel_init.c index d091513919df..1e6d74b3e773 100644 --- a/drivers/soundwire/intel_init.c +++ b/drivers/soundwire/intel_init.c @@ -60,6 +60,7 @@ static struct sdw_intel_link_dev *intel_link_dev_register(struct sdw_intel_res * /* Add link information used in the driver probe */ link = &ldev->link_res; + link->hw_ops = res->hw_ops; link->mmio_base = res->mmio_base; link->registers = res->mmio_base + SDW_LINK_BASE + (SDW_LINK_SIZE * link_id); diff --git a/include/linux/soundwire/sdw_intel.h b/include/linux/soundwire/sdw_intel.h index 2e9fd91572d4..2dbe34b41ef1 100644 --- a/include/linux/soundwire/sdw_intel.h +++ b/include/linux/soundwire/sdw_intel.h @@ -233,6 +233,7 @@ struct sdw_intel_ctx { * struct sdw_intel_res - Soundwire Intel global resource structure, * typically populated by the DSP driver * + * @hw_ops: abstraction for platform ops * @count: link count * @mmio_base: mmio base of SoundWire registers * @irq: interrupt number @@ -249,6 +250,7 @@ struct sdw_intel_ctx { * @alh_base: sdw alh base. */ struct sdw_intel_res { + const struct sdw_intel_hw_ops *hw_ops; int count; void __iomem *mmio_base; int irq; @@ -292,4 +294,17 @@ irqreturn_t sdw_intel_thread(int irq, void *dev_id); #define SDW_INTEL_QUIRK_MASK_BUS_DISABLE BIT(1) +struct sdw_intel; + +/* struct intel_sdw_hw_ops - SoundWire ops for Intel platforms. + * @pre_bank_switch: helper for bus management + * @post_bank_switch: helper for bus management + */ +struct sdw_intel_hw_ops { + int (*pre_bank_switch)(struct sdw_intel *sdw); + int (*post_bank_switch)(struct sdw_intel *sdw); +}; + +extern const struct sdw_intel_hw_ops sdw_intel_cnl_hw_ops; + #endif diff --git a/sound/soc/sof/intel/hda.c b/sound/soc/sof/intel/hda.c index 1188ec51816b..3d6254489056 100644 --- a/sound/soc/sof/intel/hda.c +++ b/sound/soc/sof/intel/hda.c @@ -188,6 +188,7 @@ static int hda_sdw_probe(struct snd_sof_dev *sdev) memset(&res, 0, sizeof(res)); + res.hw_ops = &sdw_intel_cnl_hw_ops; res.mmio_base = sdev->bar[HDA_DSP_BAR]; res.shim_base = hdev->desc->sdw_shim_base; res.alh_base = hdev->desc->sdw_alh_base; @@ -1694,3 +1695,4 @@ MODULE_IMPORT_NS(SND_SOC_SOF_HDA_AUDIO_CODEC_I915); MODULE_IMPORT_NS(SND_SOC_SOF_XTENSA); MODULE_IMPORT_NS(SND_INTEL_SOUNDWIRE_ACPI); MODULE_IMPORT_NS(SOUNDWIRE_INTEL_INIT); +MODULE_IMPORT_NS(SOUNDWIRE_INTEL); -- 2.25.1