From: Vijendar Mukunda <Vijendar.Mukunda@amd.com>
To: <broonie@kernel.org>, <vkoul@kernel.org>
Cc: <alsa-devel@alsa-project.org>, <yung-chuan.liao@linux.intel.com>,
<pierre-louis.bossart@linux.intel.com>,
<Basavaraj.Hiregoudar@amd.com>, <Sunil-kumar.Dommati@amd.com>,
<vinod.koul@intel.com>, <venkataprasad.potturu@amd.com>,
Vijendar Mukunda <Vijendar.Mukunda@amd.com>,
Sanyog Kale <sanyog.r.kale@intel.com>,
open list <linux-kernel@vger.kernel.org>
Subject: [PATCH V4 04/13] soundwire: amd: implement function to extract slave information
Date: Mon, 29 Jan 2024 11:21:38 +0530 [thread overview]
Message-ID: <20240129055147.1493853-5-Vijendar.Mukunda@amd.com> (raw)
In-Reply-To: <20240129055147.1493853-1-Vijendar.Mukunda@amd.com>
Implement function to extract slaves information connected on the bus.
This information is required during machine select logic.
This function will be called from machine select logic code.
Signed-off-by: Vijendar Mukunda <Vijendar.Mukunda@amd.com>
---
drivers/soundwire/amd_init.c | 43 +++++++++++++++++++++++++++++++
include/linux/soundwire/sdw_amd.h | 2 ++
2 files changed, 45 insertions(+)
diff --git a/drivers/soundwire/amd_init.c b/drivers/soundwire/amd_init.c
index 699391d9acba..46a0538d7fc7 100644
--- a/drivers/soundwire/amd_init.c
+++ b/drivers/soundwire/amd_init.c
@@ -142,6 +142,49 @@ void sdw_amd_exit(struct sdw_amd_ctx *ctx)
}
EXPORT_SYMBOL_NS(sdw_amd_exit, SOUNDWIRE_AMD_INIT);
+int sdw_amd_get_slave_info(struct sdw_amd_ctx *ctx)
+{
+ struct amd_sdw_manager *amd_manager;
+ struct sdw_bus *bus;
+ struct sdw_slave *slave;
+ struct list_head *node;
+ int index;
+ int i = 0;
+ int num_slaves = 0;
+
+ for (index = 0; index < ctx->count; index++) {
+ if (!(ctx->link_mask & BIT(index)))
+ continue;
+ amd_manager = dev_get_drvdata(&ctx->pdev[index]->dev);
+ if (!amd_manager)
+ return -ENODEV;
+ bus = &amd_manager->bus;
+ /* Calculate number of slaves */
+ list_for_each(node, &bus->slaves)
+ num_slaves++;
+ }
+
+ ctx->ids = kcalloc(num_slaves, sizeof(*ctx->ids), GFP_KERNEL);
+ if (!ctx->ids)
+ return -ENOMEM;
+ ctx->num_slaves = num_slaves;
+ for (index = 0; index < ctx->count; index++) {
+ if (!(ctx->link_mask & BIT(index)))
+ continue;
+ amd_manager = dev_get_drvdata(&ctx->pdev[index]->dev);
+ if (amd_manager) {
+ bus = &amd_manager->bus;
+ list_for_each_entry(slave, &bus->slaves, node) {
+ ctx->ids[i].id = slave->id;
+ ctx->ids[i].link_id = bus->link_id;
+ i++;
+ }
+ }
+ }
+ return 0;
+}
+EXPORT_SYMBOL_NS(sdw_amd_get_slave_info, SOUNDWIRE_AMD_INIT);
+
MODULE_AUTHOR("Vijendar.Mukunda@amd.com");
MODULE_DESCRIPTION("AMD SoundWire Init Library");
MODULE_LICENSE("Dual BSD/GPL");
diff --git a/include/linux/soundwire/sdw_amd.h b/include/linux/soundwire/sdw_amd.h
index 54735fa49759..9103772c2497 100644
--- a/include/linux/soundwire/sdw_amd.h
+++ b/include/linux/soundwire/sdw_amd.h
@@ -170,5 +170,7 @@ int sdw_amd_probe(struct sdw_amd_res *res, struct sdw_amd_ctx **ctx);
void sdw_amd_exit(struct sdw_amd_ctx *ctx);
+int sdw_amd_get_slave_info(struct sdw_amd_ctx *ctx);
+
int amd_sdw_scan_controller(struct sdw_amd_acpi_info *info);
#endif
--
2.34.1
next prev parent reply other threads:[~2024-01-29 5:52 UTC|newest]
Thread overview: 18+ messages / expand[flat|nested] mbox.gz Atom feed top
[not found] <20240129055147.1493853-1-Vijendar.Mukunda@amd.com>
2024-01-29 5:51 ` [PATCH V4 01/13] ASoC/soundwire: implement generic api for scanning amd soundwire controller Vijendar Mukunda
2024-01-29 5:51 ` [PATCH V4 02/13] soundwire: amd: update license Vijendar Mukunda
2024-01-30 15:58 ` Vinod Koul
2024-01-29 5:51 ` [PATCH V4 03/13] soundwire: amd: refactor amd soundwire manager device node creation Vijendar Mukunda
2024-01-30 16:00 ` Vinod Koul
2024-01-29 5:51 ` Vijendar Mukunda [this message]
2024-01-30 15:59 ` [PATCH V4 04/13] soundwire: amd: implement function to extract slave information Vinod Koul
2024-01-29 5:51 ` [PATCH V4 05/13] soundwire: amd: refactor soundwire pads enable Vijendar Mukunda
2024-01-30 16:00 ` Vinod Koul
2024-01-29 5:51 ` [PATCH V4 06/13] soundwire: amd: refactor register mask structure Vijendar Mukunda
2024-01-30 16:00 ` Vinod Koul
2024-01-29 5:51 ` [PATCH V4 07/13] ASoC: SOF: amd: add code for invoking soundwire manager helper functions Vijendar Mukunda
2024-01-29 5:51 ` [PATCH V4 08/13] ASoC: SOF: amd: add interrupt handling for SoundWire manager devices Vijendar Mukunda
2024-01-29 5:51 ` [PATCH V4 09/13] ASoC: SOF: amd: Add Soundwire DAI configuration support for AMD platforms Vijendar Mukunda
2024-01-29 5:51 ` [PATCH V4 10/13] ASoC: SOF: amd: add machine select logic for soundwire based platforms Vijendar Mukunda
2024-01-29 5:51 ` [PATCH V4 11/13] ASoC: SOF: amd: update descriptor fields for acp6.3 based platform Vijendar Mukunda
2024-01-29 5:51 ` [PATCH V4 12/13] ASoC: SOF: amd: select soundwire dependency flag " Vijendar Mukunda
2024-01-29 5:51 ` [PATCH V4 13/13] ASoC: SOF: amd: refactor acp driver pm ops Vijendar Mukunda
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