linux-kernel - [PATCH v2 3/3] hwmon: (lm85) add support for LM96000 high frequencies

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Message-Id: <20190131220617.15223-4-jgebben@sweptlaser.com>
Date:   Thu, 31 Jan 2019 15:06:17 -0700
From:   Jeremy Gebben <jgebben@...ptlaser.com>
To:     Jean Delvare <jdelvare@...e.com>,
        Guenter Roeck <linux@...ck-us.net>,
        Jonathan Corbet <corbet@....net>, linux-hwmon@...r.kernel.org,
        linux-doc@...r.kernel.org, linux-kernel@...r.kernel.org
Subject: [PATCH v2 3/3] hwmon: (lm85) add support for LM96000 high frequencies

This chip expands the freqency field from 3 to 4 bits, to
add more frequencies in the 22.5 to 30 kHz ranges.

Signed-off-by: Jeremy Gebben <jgebben@...ptlaser.com>
---
 Documentation/hwmon/lm85 | 3 +++
 drivers/hwmon/lm85.c     | 9 +++++++++
 2 files changed, 12 insertions(+)

diff --git a/Documentation/hwmon/lm85 b/Documentation/hwmon/lm85
index 9f3a945d1..264874f09 100644
--- a/Documentation/hwmon/lm85
+++ b/Documentation/hwmon/lm85
@@ -140,6 +140,9 @@ of voltage and temperature channels.
 SMSC EMC6D103S is similar to EMC6D103, but does not support pwm#_auto_pwm_minctl
 and temp#_auto_temp_off.
 
+The LM96000 supports additional high frequency PWM modes (22.5 kHz, 24 kHz,
+25.7 kHz, 27.7 kHz and 30 kHz), which can be configured on a per-PWM basis.
+
 Hardware Configurations
 -----------------------
 
diff --git a/drivers/hwmon/lm85.c b/drivers/hwmon/lm85.c
index 4b15193d1..88f08f4bc 100644
--- a/drivers/hwmon/lm85.c
+++ b/drivers/hwmon/lm85.c
@@ -202,6 +202,11 @@ static const int lm85_freq_map[] = { /* 1 Hz */
 	10, 15, 23, 30, 38, 47, 61, 94
 };
 
+static const int lm85_high_freq_map[] = { /* 1 Hz */
+	10, 15, 23, 30, 38, 47, 61, 94,
+	22500, 24000, 25700, 25700, 27700, 27700, 30000, 30000
+};
+
 static const int adm1027_freq_map[] = { /* 1 Hz */
 	11, 15, 22, 29, 35, 44, 59, 88
 };
@@ -1574,6 +1579,10 @@ static int lm85_probe(struct i2c_client *client, const struct i2c_device_id *id)
 		data->freq_map = adm1027_freq_map;
 		data->freq_map_size = ARRAY_SIZE(adm1027_freq_map);
 		break;
+	case lm85:
+		data->freq_map = lm85_high_freq_map;
+		data->freq_map_size = ARRAY_SIZE(lm85_high_freq_map);
+		break;
 	default:
 		data->freq_map = lm85_freq_map;
 		data->freq_map_size = ARRAY_SIZE(lm85_freq_map);
-- 
2.17.1