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LF-11391-4: ASoC: fsl_xcvr: read edid when cmdc status update

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According to eARC spec when CMDC status updated, which means
the HDMI_HPD of TX is changed, then eARC RX need to re-read
the EDID info.

Signed-off-by: Shengjiu Wang <shengjiu.wang@nxp.com>
Reviewed-by: Sandor Yu <sandor.yu@nxp.com>
Reviewed-by: Chancel Liu <chancel.liu@nxp.com>
This commit is contained in:
Shengjiu Wang 2024-01-17 17:31:10 +08:00
parent cf52f56f1e
commit 39715e3145
2 changed files with 26 additions and 0 deletions
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23
sound/soc/fsl/fsl_xcvr.c
View File

@ -1,6 +1,8 @@
// SPDX-License-Identifier: GPL-2.0
// Copyright 2019 NXP
#include <drm/drm_bridge.h>
#include <drm/drm_connector.h>
#include <linux/bitrev.h>
#include <linux/clk.h>
#include <linux/firmware.h>
@ -1142,6 +1144,16 @@ static const struct regmap_config fsl_xcvr_regmap_cfg = {
.cache_type = REGCACHE_FLAT,
};
static void edid_work(struct work_struct *work)
{
struct fsl_xcvr *xcvr = container_of(work, struct fsl_xcvr, work);
struct device *dev = &xcvr->pdev->dev;
dev_dbg(dev, "trigger edid read\n");
if (xcvr->bridge)
drm_bridge_get_edid(xcvr->bridge, NULL);
}
static irqreturn_t irq0_isr(int irq, void *devid)
{
struct fsl_xcvr *xcvr = (struct fsl_xcvr *)devid;
@ -1211,6 +1223,7 @@ static irqreturn_t irq0_isr(int irq, void *devid)
}
if (isr & FSL_XCVR_IRQ_CMDC_STATUS_UPD) {
dev_dbg(dev, "CMDC status update\n");
schedule_work(&xcvr->work);
isr_clr |= FSL_XCVR_IRQ_CMDC_STATUS_UPD;
}
@ -1244,6 +1257,7 @@ static int fsl_xcvr_probe(struct platform_device *pdev)
struct fsl_xcvr *xcvr;
struct resource *rx_res, *tx_res;
void __iomem *regs;
struct device_node *hdmi_np;
int ret, irq;
xcvr = devm_kzalloc(dev, sizeof(*xcvr), GFP_KERNEL);
@ -1359,11 +1373,20 @@ static int fsl_xcvr_probe(struct platform_device *pdev)
if (ret)
dev_err(&pdev->dev, "fail to create sys group\n");
INIT_WORK(&xcvr->work, edid_work);
hdmi_np = of_parse_phandle(pdev->dev.of_node, "hdmi-phandle", 0);
if (hdmi_np)
xcvr->bridge = of_drm_find_bridge(hdmi_np);
return ret;
}
static void fsl_xcvr_remove(struct platform_device *pdev)
{
struct fsl_xcvr *xcvr = dev_get_drvdata(&pdev->dev);
cancel_work_sync(&xcvr->work);
sysfs_remove_group(&pdev->dev.kobj, fsl_xcvr_get_attr_grp());
pm_runtime_disable(&pdev->dev);
}

3
sound/soc/fsl/fsl_xcvr.h
View File

@ -8,6 +8,7 @@
#ifndef __FSL_XCVR_H
#define __FSL_XCVR_H
#include <drm/drm_bridge.h>
#include <linux/regmap.h>
#include <linux/reset.h>
#include <sound/dmaengine_pcm.h>
@ -328,6 +329,8 @@ struct fsl_xcvr {
u8 cap_ds[FSL_XCVR_CAPDS_SIZE];
struct snd_pcm_hw_constraint_list spdif_constr_rates;
u32 spdif_constr_rates_list[SPDIF_NUM_RATES];
struct work_struct work;
struct drm_bridge *bridge;
};
const struct attribute_group *fsl_xcvr_get_attr_grp(void);