iio: accel: sca3300: Add support for SCL3300

Add support for Murata SCL3300, a 3-axis MEMS accelerometer.
Same as SCA3300, it has the accelerometer and temperature output.

Datasheet: www.murata.com/en-us/products/sensor/inclinometer/overview/lineup/scl3300
Signed-off-by: LI Qingwu <Qing-wu.Li@leica-geosystems.com.cn>
Reviewed-by: Tomas Melin <tomas.melin@vaisala.com>
Link: https://lore.kernel.org/r/20220529061853.3044893-5-Qing-wu.Li@leica-geosystems.com.cn
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>

diff --git a/drivers/iio/accel/sca3300.c b/drivers/iio/accel/sca3300.c
index 21bf439..9683dce 100644 (file)
--- a/drivers/iio/accel/sca3300.c
+++ b/drivers/iio/accel/sca3300.c
@@ -38,6 +38,7 @@
 /* Device ID */
 #define SCA3300_REG_WHOAMI     0x10
 #define SCA3300_WHOAMI_ID      0x51
+#define SCL3300_WHOAMI_ID      0xC1
 
 /* Device return status and mask */
 #define SCA3300_VALUE_RS_ERROR 0x3
@@ -96,10 +97,18 @@ static const struct iio_chan_spec sca3300_channels[] = {
 static const int sca3300_lp_freq[] = {70, 10};
 static const int sca3300_lp_freq_map[] = {0, 0, 0, 1};
 
+static const int scl3300_lp_freq[] = {40, 70, 10};
+static const int scl3300_lp_freq_map[] = {0, 1, 2};
+
 static const int sca3300_accel_scale[][2] = {{0, 370}, {0, 741}, {0, 185}};
 static const int sca3300_accel_scale_map[] = {0, 1, 2, 2};
 
+static const int scl3300_accel_scale[][2] = {{0, 167}, {0, 333}, {0, 83}};
+static const int scl3300_accel_scale_map[] = {0, 1, 2};
+
 static const int sca3300_avail_modes_map[] = {0, 1, 2, 3};
+static const int scl3300_avail_modes_map[] = {0, 1, 3};
+
 static const unsigned long sca3300_scan_masks[] = {
        BIT(SCA3300_ACC_X) | BIT(SCA3300_ACC_Y) | BIT(SCA3300_ACC_Z) |
        BIT(SCA3300_TEMP),
@@ -159,6 +168,21 @@ static const struct sca3300_chip_info sca3300_chip_tbl[] = {
                .num_avail_modes = 4,
                .chip_id = SCA3300_WHOAMI_ID,
        },
+       {
+               .name = "scl3300",
+               .scan_masks = sca3300_scan_masks,
+               .channels = sca3300_channels,
+               .num_channels = ARRAY_SIZE(sca3300_channels),
+               .num_accel_scales = ARRAY_SIZE(scl3300_accel_scale)*2,
+               .accel_scale = scl3300_accel_scale,
+               .accel_scale_map = scl3300_accel_scale_map,
+               .num_freqs = ARRAY_SIZE(scl3300_lp_freq),
+               .freq_table = scl3300_lp_freq,
+               .freq_map = scl3300_lp_freq_map,
+               .avail_modes_table = scl3300_avail_modes_map,
+               .num_avail_modes = 3,
+               .chip_id = SCL3300_WHOAMI_ID,
+       },
 };
 
 DECLARE_CRC8_TABLE(sca3300_crc_table);
@@ -442,9 +466,10 @@ static int sca3300_init(struct sca3300_data *sca_data,
 
        /*
         * Wait 1ms after SW-reset command.
-        * Wait 15ms for settling of signal paths.
+        * Wait for the settling of signal paths,
+        * 15ms for SCA3300 and 25ms for SCL3300,
         */
-       usleep_range(16e3, 50e3);
+       usleep_range(26e3, 50e3);
 
        ret = sca3300_read_reg(sca_data, SCA3300_REG_WHOAMI, &value);
        if (ret)
@@ -571,6 +596,7 @@ static int sca3300_probe(struct spi_device *spi)
 
 static const struct of_device_id sca3300_dt_ids[] = {
        { .compatible = "murata,sca3300"},
+       { .compatible = "murata,scl3300"},
        {}
 };
 MODULE_DEVICE_TABLE(of, sca3300_dt_ids);