Received-SPF: pass (google.com: domain of linux-kernel-owner@vger.kernel.org designates 23.128.96.18 as permitted sender) client-ip=23.128.96.18;
From:   Jeff LaBundy <jeff@labundy.com>
To:     lee.jones@linaro.org, jic23@kernel.org
Cc:     linux-kernel@vger.kernel.org, linux-iio@vger.kernel.org,
        Jeff LaBundy <jeff@labundy.com>
Subject: [PATCH 2/2] iio: temperature: iqs620at-temp: Add support for V3 silicon
Date:   Sun, 23 Jan 2022 13:01:06 -0600
Message-Id: <20220123190106.80591-3-jeff@labundy.com>
In-Reply-To: <20220123190106.80591-1-jeff@labundy.com>
References: <20220123190106.80591-1-jeff@labundy.com>
Content-Transfer-Encoding: 8bit
Content-Type: text/plain
MIME-Version: 1.0
X-MS-Exchange-AntiSpam-MessageData-ChunkCount: 1
X-MS-Exchange-AntiSpam-MessageData-0: =?us-ascii?Q?Q8FI8v5G1Kwe0c5MPgdtBNrwiHdBnE3uZ891cC5SetSfjBZFOU5EHPTRwskd?=
 =?us-ascii?Q?XM8jfiKvPxapV5Aaki1pN2Ws5+lfCVBu0QzaWNjgG82gzTzj7gBfTsQaBP6p?=
 =?us-ascii?Q?cNGMNe951wVSnphSp2pOCKHEM6Fo1oSv29LMaaMIlKDN4U3chDisKlurpDrb?=
 =?us-ascii?Q?9qT7TM8MLhibkwVjCFKhgz42egwhtmNdXClMvC4vVrYIJMHFh+YXEBWYa3nb?=
 =?us-ascii?Q?pPC4mQXmyYL75H4UANBnpLKzDz2FjeVNI15y8APWZvl6GNeVG+xpyZUDVATG?=
 =?us-ascii?Q?wE2NU1rGOYAdMeb5fMPCbqH4euV2PQnc5h+EAvOdS9fKk/6apUB5ZYtJleiX?=
 =?us-ascii?Q?2sqYN7yKfSfxSeDbLEsh77j6v4urzN3eQ5QZn+CqGwjgWb5FJ4QxckmK2QAC?=
 =?us-ascii?Q?Qn5HB7blCEgIuZp5BUee60HpXppIUo8KOSQkr4xlCnjekkrr37ylmuDgw+Ii?=
 =?us-ascii?Q?eNekHi3vUFN8oI8tEoDl216arrtYTFPPBtr+LHHO9a3TFnnXIWgsFk9Ump0m?=
 =?us-ascii?Q?AuCMtKedHeCrq3JpCRKdp4aq0CPm+YHGX/qWSzswviaT89UGL+cufMEg/SG+?=
 =?us-ascii?Q?9cYxDqEVOF9lgsE3OVlQHo+kmilKKeOT+ygzyApmK5c70ug5Q+6hasRvCVQW?=
 =?us-ascii?Q?Y/8tuRDWwWwkQWqAAxVsk80ttT+Dp2A/VtJ+ch0OnCjjaeXf4sI/DJQV3TOX?=
 =?us-ascii?Q?hhpmaoFrQ3ivAI4olK3oho77W/8cFjmq5W5qJunR6cHObcCcH48Vyaou5sEr?=
 =?us-ascii?Q?TbmM8pGefGL/qoC+lsD4HgNGSCoZQF2N5rkxvE9dV1XHhU9S11gmyZ6wAMjU?=
 =?us-ascii?Q?sm6GP2WtFDOKFcy0hzz7aUU5rw9hpCcpv5OR1Gkr28Zj8MttlArOqCU442N/?=
 =?us-ascii?Q?p7zrwpiyB0xHZiEB4mSp8T0XAZEUd6RGnTzrmlFyTdUVnD7Nb2JIRc2sqTZc?=
 =?us-ascii?Q?i9arYcvIkjafsobOVdB6mUUuvmeV2YjDVRiGE3TBUJ6olUI928+qsI4zE7r/?=
 =?us-ascii?Q?bLSDts5XwoHQO1F6aE55VGmePVdoT1hS+zCwKEMjb+uURtkG0JKQH4WqHHyN?=
 =?us-ascii?Q?8NWUMhcN4NlmDOV5nQVkL4SfpkVV2K2IVHVbiY8nMGNgckGayMyfD1WqzH1X?=
 =?us-ascii?Q?REvw3nrhiqQOOpwyMBrym2u+h1iiY14/FI0VnQwIWEjHZwe5qf4V6IysjIjl?=
 =?us-ascii?Q?jF1y6mASLiWLDvUwgtBsQMzGlVJT866uydk2HTpUezU73lZj96xL8cwTWBaf?=
 =?us-ascii?Q?ER3goUmF2Xt80B1l51s6t+UUV8CYYmeYk3S9zMM0fX7QesTxgUdtljjo6wgG?=
 =?us-ascii?Q?Fc69jT4lwz8yMYPVReD33WjmzT5MlNTWe1bs1/G7lLotrYGPPofYCI0lnUy9?=
 =?us-ascii?Q?t4Xba5EMIJULArRWtzJZt2IHsjZnpm8nei7nNYNKysKlFqCsvc1M8rHD5BUw?=
 =?us-ascii?Q?iPNtMb8GjfwDD6s2JnPqNqGfyk2jzx3qiGrUFinUaUyvkV9jLeCzOzIoDLuk?=
 =?us-ascii?Q?WDaXDNR9IjzLBtSEysOvrL301/LsWnL246ugySNSw7HBd3mP2qhlOP5dYhNh?=
 =?us-ascii?Q?nLpbXHbL6sIswmVZkUc4YdNeIgpdN5Ji1rB6GqR5a5B7/vIo39rOnaR8P176?=
 =?us-ascii?Q?rjQU+cYXPUectc7H6yrEtRA=3D?=
X-OriginatorOrg: labundy.com
X-MS-Exchange-CrossTenant-Network-Message-Id: 47b270ad-661a-49c2-ccb2-08d9dea2c761
X-MS-Exchange-CrossTenant-AuthSource: SJ0PR08MB6544.namprd08.prod.outlook.com
X-MS-Exchange-CrossTenant-AuthAs: Internal
X-MS-Exchange-CrossTenant-OriginalArrivalTime: 23 Jan 2022 19:01:36.2810
 (UTC)
X-MS-Exchange-CrossTenant-FromEntityHeader: Hosted
X-MS-Exchange-CrossTenant-Id: 00b69d09-acab-4585-aca7-8fb7c6323e6f
X-MS-Exchange-CrossTenant-MailboxType: HOSTED
X-MS-Exchange-CrossTenant-UserPrincipalName: pKmfLil3SapFy84D6saqSZXbOIi5xoVUba3LYZTegPLKjvi0I1JiFE5NtUFKEX+lQnLhWSNxTYVsXosoMTKtQw==
X-MS-Exchange-Transport-CrossTenantHeadersStamped: BN7PR08MB3892
Precedence: bulk
List-ID: <linux-kernel.vger.kernel.org>
X-Mailing-List: linux-kernel@vger.kernel.org

The vendor introduced an updated revision of IQS620A(T) silicon
which is backwards-compatible with previous revisions, the only
exception being the offset used to derive temperature.

Enable this new revision by returning the appropriate offset as
a function of the hardware number provided by the parent MFD.

Signed-off-by: Jeff LaBundy <jeff@labundy.com>
---
 drivers/iio/temperature/iqs620at-temp.c | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/drivers/iio/temperature/iqs620at-temp.c b/drivers/iio/temperature/iqs620at-temp.c
index fe126e1fb783..e2f878d57af7 100644
--- a/drivers/iio/temperature/iqs620at-temp.c
+++ b/drivers/iio/temperature/iqs620at-temp.c
@@ -17,6 +17,7 @@
 
 #define IQS620_TEMP_SCALE			1000
 #define IQS620_TEMP_OFFSET			(-100)
+#define IQS620_TEMP_OFFSET_V3			(-40)
 
 static int iqs620_temp_read_raw(struct iio_dev *indio_dev,
 				struct iio_chan_spec const *chan,
@@ -41,7 +42,8 @@ static int iqs620_temp_read_raw(struct iio_dev *indio_dev,
 		return IIO_VAL_INT;
 
 	case IIO_CHAN_INFO_OFFSET:
-		*val = IQS620_TEMP_OFFSET;
+		*val = iqs62x->hw_num < IQS620_HW_NUM_V3 ? IQS620_TEMP_OFFSET
+							 : IQS620_TEMP_OFFSET_V3;
 		return IIO_VAL_INT;
 
 	default:
-- 
2.25.1