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Fri, 15 Aug 2025 08:47:29 -0700 (PDT) X-Google-Smtp-Source: AGHT+IHfbod/CWLgd7xkweW30B24YNgaFlJbj9Vgp4n7cu6PVX9gaaIaPkSlYozadv7IFAd9WFvAPQ== X-Received: by 2002:a05:6a20:a10a:b0:23d:e026:5eec with SMTP id adf61e73a8af0-240d2d8fdf9mr4493867637.6.1755272849332; Fri, 15 Aug 2025 08:47:29 -0700 (PDT) Received: from [192.168.1.4] ([182.65.246.255]) by smtp.gmail.com with ESMTPSA id 41be03b00d2f7-b472d60978fsm1576486a12.26.2025.08.15.08.47.23 (version=TLS1_3 cipher=TLS_AES_128_GCM_SHA256 bits=128/128); Fri, 15 Aug 2025 08:47:29 -0700 (PDT) Message-ID: Date: Fri, 15 Aug 2025 21:17:21 +0530 Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 User-Agent: Mozilla Thunderbird Subject: Re: [PATCH v4 2/2] ASoC: codecs: wsa883x: Handle shared reset GPIO for WSA883x speakers To: Srinivas Kandagatla , Liam Girdwood , Mark Brown , Rob Herring , Krzysztof Kozlowski , Conor Dooley , Jaroslav Kysela , Takashi Iwai , Philipp Zabel , Linus Walleij , Bartosz Golaszewski Cc: linux-sound@vger.kernel.org, linux-arm-msm@vger.kernel.org, devicetree@vger.kernel.org, linux-kernel@vger.kernel.org, linux-gpio@vger.kernel.org, quic_pkumpatl@quicinc.com, kernel@oss.qualcomm.com, Mohammad Rafi Shaik References: <20250806181818.2817356-1-mohammad.rafi.shaik@oss.qualcomm.com> <20250806181818.2817356-3-mohammad.rafi.shaik@oss.qualcomm.com> <5ee0656b-136b-480f-9555-26ccdbff3eda@kernel.org> Content-Language: en-US From: Mohammad Rafi Shaik In-Reply-To: <5ee0656b-136b-480f-9555-26ccdbff3eda@kernel.org> Content-Type: text/plain; charset=UTF-8; format=flowed Content-Transfer-Encoding: 7bit X-Authority-Analysis: v=2.4 cv=CNMqXQrD c=1 sm=1 tr=0 ts=689f5692 cx=c_pps a=rz3CxIlbcmazkYymdCej/Q==:117 a=pI+DPfzdYYuZfMA0k80AuQ==:17 a=IkcTkHD0fZMA:10 a=2OwXVqhp2XgA:10 a=COk6AnOGAAAA:8 a=Mg5sY2mpGzWUx03gXF4A:9 a=QEXdDO2ut3YA:10 a=bFCP_H2QrGi7Okbo017w:22 a=TjNXssC_j7lpFel5tvFf:22 X-Proofpoint-GUID: pWy8qRK4ZmIrryXUDV0dviR8DcrRlREY X-Proofpoint-ORIG-GUID: pWy8qRK4ZmIrryXUDV0dviR8DcrRlREY X-Proofpoint-Spam-Details-Enc: AW1haW4tMjUwODEyMDE2NCBTYWx0ZWRfX+FY/VNkVcQ3j yLdyU13irxwRviZaBDSTSSz4ZShE6d6BBX8m8vPYmeiplCqfpgCB9WH0dZEubjrpEuXAWz6Gbj0 k7d7erD6JWrlpdouDVjQ7DaW3Dw6FDimb0ffHPdCgRo0CLCgmIk9n2J4+dsvpRXwl/sWTSq2Wb5 f9ltKRpYepYPZH86Q/dfOZfmqDcGdxlgo7/NP8gUnWCs4rgm0CdDYDPe2ac7WRUJ1wVKTHyWfTd P6zoyax7b4hSZVYmaa6HFoIkuG973fBgyDPL6js9FJChxx4z1US/YQUyc7BpXK9xDVK/mAkFf31 mdd6xT3+2CA9+2q9SsryAPbwDYaZotD6zGRJFUJtQEWokrUpuqK2wAaIxSgVhG1O8LQrLnWQrpB JJ94tqzP X-Proofpoint-Virus-Version: vendor=baseguard engine=ICAP:2.0.293,Aquarius:18.0.1099,Hydra:6.1.9,FMLib:17.12.80.40 definitions=2025-08-15_05,2025-08-14_01,2025-03-28_01 X-Proofpoint-Spam-Details: rule=outbound_notspam policy=outbound score=0 spamscore=0 adultscore=0 phishscore=0 bulkscore=0 clxscore=1015 malwarescore=0 impostorscore=0 priorityscore=1501 suspectscore=0 classifier=typeunknown authscore=0 authtc= authcc= route=outbound adjust=0 reason=mlx scancount=1 engine=8.19.0-2507300000 definitions=main-2508120164 On 8/15/2025 12:07 PM, Srinivas Kandagatla wrote: > > On 8/6/25 7:18 PM, Mohammad Rafi Shaik wrote: >> From: Mohammad Rafi Shaik >> >> On some Qualcomm platforms such as QCS6490-RB3Gen2, the multiple >> WSA8830/WSA8835 speaker amplifiers share a common reset (shutdown) GPIO. >> >> To handle such scenario, use the reset controller framework and its >> "reset-gpio" driver to handle such case. This allows proper handling >> of all WSA883x speaker amplifiers on QCS6490-RB3Gen2 board. >> >> Signed-off-by: Mohammad Rafi Shaik >> --- >> sound/soc/codecs/wsa883x.c | 57 +++++++++++++++++++++++++++++++++----- >> 1 file changed, 50 insertions(+), 7 deletions(-) >> >> diff --git a/sound/soc/codecs/wsa883x.c b/sound/soc/codecs/wsa883x.c >> index 188363b03b93..ec7a55d88576 100644 >> --- a/sound/soc/codecs/wsa883x.c >> +++ b/sound/soc/codecs/wsa883x.c >> @@ -14,6 +14,7 @@ >> #include >> #include >> #include >> +#include >> #include >> #include >> #include >> @@ -468,6 +469,7 @@ struct wsa883x_priv { >> struct sdw_stream_runtime *sruntime; >> struct sdw_port_config port_config[WSA883X_MAX_SWR_PORTS]; >> struct gpio_desc *sd_n; >> + struct reset_control *sd_reset; >> bool port_prepared[WSA883X_MAX_SWR_PORTS]; >> bool port_enable[WSA883X_MAX_SWR_PORTS]; >> int active_ports; >> @@ -1546,6 +1548,46 @@ static const struct hwmon_chip_info wsa883x_hwmon_chip_info = { >> .info = wsa883x_hwmon_info, >> }; >> >> +static void wsa883x_reset_assert(void *data) >> +{ >> + struct wsa883x_priv *wsa883x = data; >> + >> + if (wsa883x->sd_reset) >> + reset_control_assert(wsa883x->sd_reset); >> + else >> + gpiod_direction_output(wsa883x->sd_n, 1); >> +} >> + >> +static void wsa883x_reset_deassert(struct wsa883x_priv *wsa883x) >> +{ >> + if (wsa883x->sd_reset) >> + reset_control_deassert(wsa883x->sd_reset); >> + else >> + gpiod_direction_output(wsa883x->sd_n, 0); >> +} >> + >> +static int wsa883x_get_reset(struct device *dev, struct wsa883x_priv *wsa883x) >> +{ >> + wsa883x->sd_reset = devm_reset_control_get_optional_shared_deasserted(dev, NULL); > why deasserted ? we are already doing wsa883x_reset_deassert(wsa883x) > just after calling this. > ACK, yes right, we need wsa883x_reset_deassert(wsa883x) to deassert manually because same api should handle powerdown-gpios if not reset-gpios. will use the proper api devm_reset_control_get_optional_shared(). >> + if (IS_ERR(wsa883x->sd_reset)) >> + return dev_err_probe(dev, PTR_ERR(wsa883x->sd_reset), >> + "Failed to get reset\n"); >> + /* >> + * if sd_reset: NULL, so use the backwards compatible way for powerdown-gpios, >> + * which does not handle sharing GPIO properly. >> + */ >> + if (!wsa883x->sd_reset) { >> + wsa883x->sd_n = devm_gpiod_get_optional(dev, "powerdown", >> + GPIOD_FLAGS_BIT_NONEXCLUSIVE | >> + GPIOD_OUT_HIGH); >> + if (IS_ERR(wsa883x->sd_n)) >> + return dev_err_probe(dev, PTR_ERR(wsa883x->sd_n), >> + "Shutdown Control GPIO not found\n"); >> + } >> + >> + return 0; >> +} >> + >> static int wsa883x_probe(struct sdw_slave *pdev, >> const struct sdw_device_id *id) >> { >> @@ -1566,11 +1608,9 @@ static int wsa883x_probe(struct sdw_slave *pdev, >> if (ret) >> return dev_err_probe(dev, ret, "Failed to enable vdd regulator\n"); >> >> - wsa883x->sd_n = devm_gpiod_get_optional(dev, "powerdown", >> - GPIOD_FLAGS_BIT_NONEXCLUSIVE | GPIOD_OUT_HIGH); >> - if (IS_ERR(wsa883x->sd_n)) { >> - ret = dev_err_probe(dev, PTR_ERR(wsa883x->sd_n), >> - "Shutdown Control GPIO not found\n"); >> + ret = wsa883x_get_reset(dev, wsa883x); >> + if (ret) { >> + dev_dbg(dev, "Failed to get reset powerdown GPIO: %d\n", ret); > this is redundant we already have failure messages from wsa883x_get_reset(). > ACK, Will remove the extra error logs. Thanks & Regards, Rafi. > > --srini >> goto err; >> } >> >> @@ -1595,11 +1635,14 @@ static int wsa883x_probe(struct sdw_slave *pdev, >> pdev->prop.simple_clk_stop_capable = true; >> pdev->prop.sink_dpn_prop = wsa_sink_dpn_prop; >> pdev->prop.scp_int1_mask = SDW_SCP_INT1_BUS_CLASH | SDW_SCP_INT1_PARITY; >> - gpiod_direction_output(wsa883x->sd_n, 0); >> + >> + wsa883x_reset_deassert(wsa883x); >> + ret = devm_add_action_or_reset(dev, wsa883x_reset_assert, wsa883x); >> + if (ret) >> + return ret; >> >> wsa883x->regmap = devm_regmap_init_sdw(pdev, &wsa883x_regmap_config); >> if (IS_ERR(wsa883x->regmap)) { >> - gpiod_direction_output(wsa883x->sd_n, 1); >> ret = dev_err_probe(dev, PTR_ERR(wsa883x->regmap), >> "regmap_init failed\n"); >> goto err; >