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hwmon: (pmbus/ucd9000) Add support for UCD90320 Power Sequencer
Add support for the UCD90320 chip and its expanded set of GPIO pins. Signed-off-by: Jim Wright <wrightj@linux.vnet.ibm.com> Link: https://lore.kernel.org/r/20191205232411.21492-3-wrightj@linux.vnet.ibm.com Signed-off-by: Guenter Roeck <linux@roeck-us.net>
This commit is contained in:
Jim Wright
Guenter Roeck
parent
8a36e38d8b
commit
a470f11c5b
@ -3,9 +3,10 @@ Kernel driver ucd9000
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Supported chips:
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* TI UCD90120, UCD90124, UCD90160, UCD9090, and UCD90910
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* TI UCD90120, UCD90124, UCD90160, UCD90320, UCD9090, and UCD90910
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Prefixes: 'ucd90120', 'ucd90124', 'ucd90160', 'ucd9090', 'ucd90910'
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Prefixes: 'ucd90120', 'ucd90124', 'ucd90160', 'ucd90320', 'ucd9090',
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'ucd90910'
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Addresses scanned: -
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@ -14,6 +15,7 @@ Supported chips:
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- http://focus.ti.com/lit/ds/symlink/ucd90120.pdf
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- http://focus.ti.com/lit/ds/symlink/ucd90124.pdf
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- http://focus.ti.com/lit/ds/symlink/ucd90160.pdf
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- http://focus.ti.com/lit/ds/symlink/ucd90320.pdf
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- http://focus.ti.com/lit/ds/symlink/ucd9090.pdf
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- http://focus.ti.com/lit/ds/symlink/ucd90910.pdf
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@ -45,6 +47,12 @@ power-on reset signals, external interrupts, cascading, or other system
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functions. Twelve of these pins offer PWM functionality. Using these pins, the
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UCD90160 offers support for margining, and general-purpose PWM functions.
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The UCD90320 is a 32-rail PMBus/I2C addressable power-supply sequencer and
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monitor. The 24 integrated ADC channels (AMONx) monitor the power supply
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voltage, current, and temperature. Of the 84 GPIO pins, 8 can be used as
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digital monitors (DMONx), 32 to enable the power supply (ENx), 24 for margining
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(MARx), 16 for logical GPO, and 32 GPIs for cascading, and system function.
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The UCD9090 is a 10-rail PMBus/I2C addressable power-supply sequencer and
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monitor. The device integrates a 12-bit ADC for monitoring up to 10 power-supply
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voltage inputs. Twenty-three GPIO pins can be used for power supply enables,
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@ -209,11 +209,11 @@ config SENSORS_TPS53679
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be called tps53679.
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config SENSORS_UCD9000
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tristate "TI UCD90120, UCD90124, UCD90160, UCD9090, UCD90910"
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tristate "TI UCD90120, UCD90124, UCD90160, UCD90320, UCD9090, UCD90910"
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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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UCD90120, UCD90124, UCD90160, UCD9090, UCD90910, Sequencer and System
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Health Controllers.
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UCD90120, UCD90124, UCD90160, UCD90320, UCD9090, UCD90910, Sequencer
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and System Health Controllers.
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This driver can also be built as a module. If so, the module will
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be called ucd9000.
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@ -18,7 +18,8 @@
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#include <linux/gpio/driver.h>
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#include "pmbus.h"
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enum chips { ucd9000, ucd90120, ucd90124, ucd90160, ucd9090, ucd90910 };
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enum chips { ucd9000, ucd90120, ucd90124, ucd90160, ucd90320, ucd9090,
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ucd90910 };
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#define UCD9000_MONITOR_CONFIG 0xd5
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#define UCD9000_NUM_PAGES 0xd6
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@ -38,7 +39,7 @@ enum chips { ucd9000, ucd90120, ucd90124, ucd90160, ucd9090, ucd90910 };
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#define UCD9000_GPIO_OUTPUT 1
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#define UCD9000_MON_TYPE(x) (((x) >> 5) & 0x07)
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#define UCD9000_MON_PAGE(x) ((x) & 0x0f)
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#define UCD9000_MON_PAGE(x) ((x) & 0x1f)
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#define UCD9000_MON_VOLTAGE 1
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#define UCD9000_MON_TEMPERATURE 2
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@ -50,10 +51,12 @@ enum chips { ucd9000, ucd90120, ucd90124, ucd90160, ucd9090, ucd90910 };
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#define UCD9000_GPIO_NAME_LEN 16
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#define UCD9090_NUM_GPIOS 23
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#define UCD901XX_NUM_GPIOS 26
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#define UCD90320_NUM_GPIOS 84
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#define UCD90910_NUM_GPIOS 26
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#define UCD9000_DEBUGFS_NAME_LEN 24
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#define UCD9000_GPI_COUNT 8
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#define UCD90320_GPI_COUNT 32
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struct ucd9000_data {
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u8 fan_data[UCD9000_NUM_FAN][I2C_SMBUS_BLOCK_MAX];
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@ -131,6 +134,7 @@ static const struct i2c_device_id ucd9000_id[] = {
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{"ucd90120", ucd90120},
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{"ucd90124", ucd90124},
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{"ucd90160", ucd90160},
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{"ucd90320", ucd90320},
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{"ucd9090", ucd9090},
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{"ucd90910", ucd90910},
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{}
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@ -154,6 +158,10 @@ static const struct of_device_id __maybe_unused ucd9000_of_match[] = {
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.compatible = "ti,ucd90160",
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.data = (void *)ucd90160
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},
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{
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.compatible = "ti,ucd90320",
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.data = (void *)ucd90320
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},
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{
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.compatible = "ti,ucd9090",
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.data = (void *)ucd9090
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@ -322,6 +330,9 @@ static void ucd9000_probe_gpio(struct i2c_client *client,
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case ucd90160:
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data->gpio.ngpio = UCD901XX_NUM_GPIOS;
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break;
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case ucd90320:
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data->gpio.ngpio = UCD90320_NUM_GPIOS;
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break;
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case ucd90910:
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data->gpio.ngpio = UCD90910_NUM_GPIOS;
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break;
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@ -372,17 +383,18 @@ static int ucd9000_debugfs_show_mfr_status_bit(void *data, u64 *val)
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struct ucd9000_debugfs_entry *entry = data;
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struct i2c_client *client = entry->client;
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u8 buffer[I2C_SMBUS_BLOCK_MAX];
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int ret;
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int ret, i;
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ret = ucd9000_get_mfr_status(client, buffer);
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if (ret < 0)
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return ret;
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/*
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* Attribute only created for devices with gpi fault bits at bits
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* 16-23, which is the second byte of the response.
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* GPI fault bits are in sets of 8, two bytes from end of response.
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*/
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*val = !!(buffer[1] & BIT(entry->index));
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i = ret - 3 - entry->index / 8;
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if (i >= 0)
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*val = !!(buffer[i] & BIT(entry->index % 8));
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return 0;
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}
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@ -422,7 +434,7 @@ static int ucd9000_init_debugfs(struct i2c_client *client,
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{
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struct dentry *debugfs;
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struct ucd9000_debugfs_entry *entries;
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int i;
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int i, gpi_count;
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char name[UCD9000_DEBUGFS_NAME_LEN];
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debugfs = pmbus_get_debugfs_dir(client);
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@ -435,18 +447,21 @@ static int ucd9000_init_debugfs(struct i2c_client *client,
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/*
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* Of the chips this driver supports, only the UCD9090, UCD90160,
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* and UCD90910 report GPI faults in their MFR_STATUS register, so only
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* create the GPI fault debugfs attributes for those chips.
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* UCD90320, and UCD90910 report GPI faults in their MFR_STATUS
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* register, so only create the GPI fault debugfs attributes for those
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* chips.
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*/
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if (mid->driver_data == ucd9090 || mid->driver_data == ucd90160 ||
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mid->driver_data == ucd90910) {
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mid->driver_data == ucd90320 || mid->driver_data == ucd90910) {
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gpi_count = mid->driver_data == ucd90320 ? UCD90320_GPI_COUNT
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: UCD9000_GPI_COUNT;
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entries = devm_kcalloc(&client->dev,
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UCD9000_GPI_COUNT, sizeof(*entries),
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gpi_count, sizeof(*entries),
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GFP_KERNEL);
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if (!entries)
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return -ENOMEM;
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for (i = 0; i < UCD9000_GPI_COUNT; i++) {
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for (i = 0; i < gpi_count; i++) {
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entries[i].client = client;
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entries[i].index = i;
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scnprintf(name, UCD9000_DEBUGFS_NAME_LEN,
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