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platform: mellanox: nvsw-sn2200: Add support for new system flavour

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Add support for SN2201 system flavour, which is fitting OCP rack
form-factor and feeded from external power source through the rack
standard busbar interface.

Validate system type through DMI decode.
For new system flavour:
- Skip internal power supply configuration.
- Attach power hotswap device.

Reviewed-by: Michael Shych <michaelsh@nvidia.com>
Signed-off-by: Vadim Pasternak <vadimp@nvidia.com>
Link: https://lore.kernel.org/r/20250504165507.9003-2-vadimp@nvidia.com
Reviewed-by: Ilpo Järvinen <ilpo.jarvinen@linux.intel.com>
Signed-off-by: Ilpo Järvinen <ilpo.jarvinen@linux.intel.com>
This commit is contained in:
Vadim Pasternak 2025-05-04 19:55:06 +03:00 committed by Ilpo Järvinen
parent c5925f4384
commit 56b0bb7f90
No known key found for this signature in database
GPG Key ID: 59AC4F6153E5CE31
1 changed files with 107 additions and 3 deletions
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110
drivers/platform/mellanox/nvsw-sn2201.c
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@ -6,6 +6,7 @@
*/
#include <linux/device.h>
#include <linux/dmi.h>
#include <linux/i2c.h>
#include <linux/interrupt.h>
#include <linux/irq.h>
@ -104,6 +105,9 @@
| NVSW_SN2201_CPLD_AGGR_PSU_MASK_DEF \
| NVSW_SN2201_CPLD_AGGR_PWR_MASK_DEF \
| NVSW_SN2201_CPLD_AGGR_FAN_MASK_DEF)
#define NVSW_SN2201_CPLD_AGGR_BUSBAR_MASK_DEF \
(NVSW_SN2201_CPLD_AGGR_ASIC_MASK_DEF \
| NVSW_SN2201_CPLD_AGGR_FAN_MASK_DEF)
#define NVSW_SN2201_CPLD_ASIC_MASK GENMASK(3, 1)
#define NVSW_SN2201_CPLD_PSU_MASK GENMASK(1, 0)
@ -132,6 +136,7 @@
* @cpld_devs: I2C devices for cpld;
* @cpld_devs_num: number of I2C devices for cpld;
* @main_mux_deferred_nr: I2C adapter number must be exist prior creating devices execution;
* @ext_pwr_source: true if system powered by external power supply; false - by internal;
*/
struct nvsw_sn2201 {
struct device *dev;
@ -152,6 +157,7 @@ struct nvsw_sn2201 {
struct mlxreg_hotplug_device *cpld_devs;
int cpld_devs_num;
int main_mux_deferred_nr;
bool ext_pwr_source;
};
static bool nvsw_sn2201_writeable_reg(struct device *dev, unsigned int reg)
@ -522,6 +528,35 @@ struct mlxreg_core_hotplug_platform_data nvsw_sn2201_hotplug = {
.mask = NVSW_SN2201_CPLD_AGGR_MASK_DEF,
};
static struct mlxreg_core_item nvsw_sn2201_busbar_items[] = {
{
.data = nvsw_sn2201_fan_items_data,
.aggr_mask = NVSW_SN2201_CPLD_AGGR_FAN_MASK_DEF,
.reg = NVSW_SN2201_FAN_PRSNT_STATUS_OFFSET,
.mask = NVSW_SN2201_CPLD_FAN_MASK,
.count = ARRAY_SIZE(nvsw_sn2201_fan_items_data),
.inversed = 1,
.health = false,
},
{
.data = nvsw_sn2201_sys_items_data,
.aggr_mask = NVSW_SN2201_CPLD_AGGR_ASIC_MASK_DEF,
.reg = NVSW_SN2201_ASIC_STATUS_OFFSET,
.mask = NVSW_SN2201_CPLD_ASIC_MASK,
.count = ARRAY_SIZE(nvsw_sn2201_sys_items_data),
.inversed = 1,
.health = false,
},
};
static
struct mlxreg_core_hotplug_platform_data nvsw_sn2201_busbar_hotplug = {
.items = nvsw_sn2201_items,
.count = ARRAY_SIZE(nvsw_sn2201_busbar_items),
.cell = NVSW_SN2201_SYS_INT_STATUS_OFFSET,
.mask = NVSW_SN2201_CPLD_AGGR_BUSBAR_MASK_DEF,
};
/* SN2201 static devices. */
static struct i2c_board_info nvsw_sn2201_static_devices[] = {
{
@ -557,6 +592,9 @@ static struct i2c_board_info nvsw_sn2201_static_devices[] = {
{
I2C_BOARD_INFO("pmbus", 0x40),
},
{
I2C_BOARD_INFO("lm5066i", 0x15),
},
};
/* SN2201 default static board info. */
@ -607,6 +645,58 @@ static struct mlxreg_hotplug_device nvsw_sn2201_static_brdinfo[] = {
},
};
/* SN2201 default busbar static board info. */
static struct mlxreg_hotplug_device nvsw_sn2201_busbar_static_brdinfo[] = {
{
.brdinfo = &nvsw_sn2201_static_devices[0],
.nr = NVSW_SN2201_MAIN_NR,
},
{
.brdinfo = &nvsw_sn2201_static_devices[1],
.nr = NVSW_SN2201_MAIN_MUX_CH0_NR,
},
{
.brdinfo = &nvsw_sn2201_static_devices[2],
.nr = NVSW_SN2201_MAIN_MUX_CH0_NR,
},
{
.brdinfo = &nvsw_sn2201_static_devices[3],
.nr = NVSW_SN2201_MAIN_MUX_CH0_NR,
},
{
.brdinfo = &nvsw_sn2201_static_devices[4],
.nr = NVSW_SN2201_MAIN_MUX_CH3_NR,
},
{
.brdinfo = &nvsw_sn2201_static_devices[5],
.nr = NVSW_SN2201_MAIN_MUX_CH5_NR,
},
{
.brdinfo = &nvsw_sn2201_static_devices[6],
.nr = NVSW_SN2201_MAIN_MUX_CH5_NR,
},
{
.brdinfo = &nvsw_sn2201_static_devices[7],
.nr = NVSW_SN2201_MAIN_MUX_CH5_NR,
},
{
.brdinfo = &nvsw_sn2201_static_devices[8],
.nr = NVSW_SN2201_MAIN_MUX_CH6_NR,
},
{
.brdinfo = &nvsw_sn2201_static_devices[9],
.nr = NVSW_SN2201_MAIN_MUX_CH6_NR,
},
{
.brdinfo = &nvsw_sn2201_static_devices[10],
.nr = NVSW_SN2201_MAIN_MUX_CH7_NR,
},
{
.brdinfo = &nvsw_sn2201_static_devices[11],
.nr = NVSW_SN2201_MAIN_MUX_CH1_NR,
},
};
/* LED default data. */
static struct mlxreg_core_data nvsw_sn2201_led_data[] = {
{
@ -981,7 +1071,10 @@ static int nvsw_sn2201_config_init(struct nvsw_sn2201 *nvsw_sn2201, void *regmap
nvsw_sn2201->io_data = &nvsw_sn2201_regs_io;
nvsw_sn2201->led_data = &nvsw_sn2201_led;
nvsw_sn2201->wd_data = &nvsw_sn2201_wd;
nvsw_sn2201->hotplug_data = &nvsw_sn2201_hotplug;
if (nvsw_sn2201->ext_pwr_source)
nvsw_sn2201->hotplug_data = &nvsw_sn2201_busbar_hotplug;
else
nvsw_sn2201->hotplug_data = &nvsw_sn2201_hotplug;
/* Register IO access driver. */
if (nvsw_sn2201->io_data) {
@ -1198,12 +1291,18 @@ static int nvsw_sn2201_config_pre_init(struct nvsw_sn2201 *nvsw_sn2201)
static int nvsw_sn2201_probe(struct platform_device *pdev)
{
struct nvsw_sn2201 *nvsw_sn2201;
const char *sku;
int ret;
nvsw_sn2201 = devm_kzalloc(&pdev->dev, sizeof(*nvsw_sn2201), GFP_KERNEL);
if (!nvsw_sn2201)
return -ENOMEM;
/* Validate system powering type - only HI168 SKU supports external power. */
sku = dmi_get_system_info(DMI_PRODUCT_SKU);
if (sku && !strcmp(sku, "HI168"))
nvsw_sn2201->ext_pwr_source = true;
nvsw_sn2201->dev = &pdev->dev;
platform_set_drvdata(pdev, nvsw_sn2201);
ret = platform_device_add_resources(pdev, nvsw_sn2201_lpc_io_resources,
@ -1214,8 +1313,13 @@ static int nvsw_sn2201_probe(struct platform_device *pdev)
nvsw_sn2201->main_mux_deferred_nr = NVSW_SN2201_MAIN_MUX_DEFER_NR;
nvsw_sn2201->main_mux_devs = nvsw_sn2201_main_mux_brdinfo;
nvsw_sn2201->cpld_devs = nvsw_sn2201_cpld_brdinfo;
nvsw_sn2201->sn2201_devs = nvsw_sn2201_static_brdinfo;
nvsw_sn2201->sn2201_devs_num = ARRAY_SIZE(nvsw_sn2201_static_brdinfo);
if (nvsw_sn2201->ext_pwr_source) {
nvsw_sn2201->sn2201_devs = nvsw_sn2201_busbar_static_brdinfo;
nvsw_sn2201->sn2201_devs_num = ARRAY_SIZE(nvsw_sn2201_busbar_static_brdinfo);
} else {
nvsw_sn2201->sn2201_devs = nvsw_sn2201_static_brdinfo;
nvsw_sn2201->sn2201_devs_num = ARRAY_SIZE(nvsw_sn2201_static_brdinfo);
}
return nvsw_sn2201_config_pre_init(nvsw_sn2201);
}