forked from Minki/linux
hwmon: (pmbus/tps53679) Add support for TI TPS53676
Add support for TI TPS53676 controller to the tps53679 pmbus driver The driver uses the USER_DATA_03 register to figure out how many phases are enabled and to which channel they are assigned, and sets the number of pages and phases accordingly. Signed-off-by: Erik Rosen <erik.rosen@metormote.com> Link: https://lore.kernel.org/r/20210322193734.75127-3-erik.rosen@metormote.com Signed-off-by: Guenter Roeck <linux@roeck-us.net>
This commit is contained in:
Erik Rosen
Guenter Roeck
parent
fd1edbd398
commit
cb3d37b590
@ -19,6 +19,14 @@ Supported chips:
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Datasheet: https://www.ti.com/lit/gpn/TPS53667
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* Texas Instruments TPS53676
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Prefix: 'tps53676'
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Addresses scanned: -
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Datasheet: https://www.ti.com/lit/gpn/TPS53676
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* Texas Instruments TPS53679
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Prefix: 'tps53679'
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@ -136,7 +144,7 @@ power1_input Measured input power.
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power[N]_label "pout[1-2]".
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- TPS53647, TPS53667: N=2
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- TPS53679, TPS53681, TPS53588: N=2,3
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- TPS53676, TPS53679, TPS53681, TPS53588: N=2,3
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power[N]_input Measured output power.
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@ -156,10 +164,11 @@ curr[N]_label "iout[1-2]" or "iout1.[0-5]".
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The first digit is the output channel, the second
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digit is the phase within the channel. Per-phase
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telemetry supported on TPS53681 only.
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telemetry supported on TPS53676 and TPS53681 only.
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- TPS53647, TPS53667: N=2
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- TPS53679, TPS53588: N=2,3
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- TPS53676: N=2-8
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- TPS53681: N=2-9
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curr[N]_input Measured output current.
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@ -285,10 +285,10 @@ config SENSORS_TPS40422
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be called tps40422.
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config SENSORS_TPS53679
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tristate "TI TPS53647, TPS53667, TPS53679, TPS53681, TPS53688"
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tristate "TI TPS53647, TPS53667, TPS53676, TPS53679, TPS53681, TPS53688"
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help
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If you say yes here you get hardware monitoring support for TI
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TPS53647, TPS53667, TPS53679, TPS53681, and TPS53688.
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TPS53647, TPS53667, TPS53676, TPS53679, TPS53681, and TPS53688.
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This driver can also be built as a module. If so, the module will
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be called tps53679.
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@ -16,11 +16,14 @@
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#include "pmbus.h"
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enum chips {
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tps53647, tps53667, tps53679, tps53681, tps53688
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tps53647, tps53667, tps53676, tps53679, tps53681, tps53688
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};
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#define TPS53647_PAGE_NUM 1
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#define TPS53676_USER_DATA_03 0xb3
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#define TPS53676_MAX_PHASES 7
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#define TPS53679_PROT_VR12_5MV 0x01 /* VR12.0 mode, 5-mV DAC */
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#define TPS53679_PROT_VR12_5_10MV 0x02 /* VR12.5 mode, 10-mV DAC */
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#define TPS53679_PROT_VR13_10MV 0x04 /* VR13.0 mode, 10-mV DAC */
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@ -143,6 +146,45 @@ static int tps53681_identify(struct i2c_client *client,
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TPS53681_DEVICE_ID);
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}
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static int tps53676_identify(struct i2c_client *client,
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struct pmbus_driver_info *info)
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{
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u8 buf[I2C_SMBUS_BLOCK_MAX];
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int phases_a = 0, phases_b = 0;
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int i, ret;
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ret = i2c_smbus_read_block_data(client, PMBUS_IC_DEVICE_ID, buf);
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if (ret < 0)
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return ret;
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if (strncmp("TI\x53\x67\x60", buf, 5)) {
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dev_err(&client->dev, "Unexpected device ID: %s\n", buf);
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return -ENODEV;
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}
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ret = i2c_smbus_read_block_data(client, TPS53676_USER_DATA_03, buf);
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if (ret < 0)
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return ret;
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if (ret != 24)
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return -EIO;
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for (i = 0; i < 2 * TPS53676_MAX_PHASES; i += 2) {
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if (buf[i + 1] & 0x80) {
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if (buf[i] & 0x08)
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phases_b++;
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else
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phases_a++;
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}
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}
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info->format[PSC_VOLTAGE_OUT] = linear;
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info->pages = 1;
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info->phases[0] = phases_a;
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if (phases_b > 0) {
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info->pages = 2;
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info->phases[1] = phases_b;
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}
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return 0;
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}
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static int tps53681_read_word_data(struct i2c_client *client, int page,
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int phase, int reg)
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{
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@ -183,6 +225,7 @@ static struct pmbus_driver_info tps53679_info = {
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.pfunc[3] = PMBUS_HAVE_IOUT,
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.pfunc[4] = PMBUS_HAVE_IOUT,
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.pfunc[5] = PMBUS_HAVE_IOUT,
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.pfunc[6] = PMBUS_HAVE_IOUT,
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};
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static int tps53679_probe(struct i2c_client *client)
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@ -206,6 +249,9 @@ static int tps53679_probe(struct i2c_client *client)
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info->pages = TPS53647_PAGE_NUM;
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info->identify = tps53679_identify;
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break;
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case tps53676:
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info->identify = tps53676_identify;
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break;
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case tps53679:
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case tps53688:
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info->pages = TPS53679_PAGE_NUM;
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@ -225,8 +271,10 @@ static int tps53679_probe(struct i2c_client *client)
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}
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static const struct i2c_device_id tps53679_id[] = {
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{"bmr474", tps53676},
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{"tps53647", tps53647},
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{"tps53667", tps53667},
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{"tps53676", tps53676},
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{"tps53679", tps53679},
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{"tps53681", tps53681},
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{"tps53688", tps53688},
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@ -238,6 +286,7 @@ MODULE_DEVICE_TABLE(i2c, tps53679_id);
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static const struct of_device_id __maybe_unused tps53679_of_match[] = {
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{.compatible = "ti,tps53647", .data = (void *)tps53647},
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{.compatible = "ti,tps53667", .data = (void *)tps53667},
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{.compatible = "ti,tps53676", .data = (void *)tps53676},
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{.compatible = "ti,tps53679", .data = (void *)tps53679},
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{.compatible = "ti,tps53681", .data = (void *)tps53681},
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{.compatible = "ti,tps53688", .data = (void *)tps53688},
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