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.
Signed-off-by: Vadim Pasternak <vadimp@xxxxxxxxxx>
Reviewed-by: Michael Shych <michaelsh@xxxxxxxxxx>
---
drivers/platform/mellanox/nvsw-sn2201.c | 110 +++++++++++++++++++++++-
1 file changed, 107 insertions(+), 3 deletions(-)
diff --git a/drivers/platform/mellanox/nvsw-sn2201.c b/drivers/platform/mellanox/nvsw-sn2201.c
index 0c047aa2345b..cc8fbb325aa7 100644
--- a/drivers/platform/mellanox/nvsw-sn2201.c
+++ b/drivers/platform/mellanox/nvsw-sn2201.c
@@ -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: 1 if system powered by external power supply; 0 - 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;
+ u8 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,
+ .counter = 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 basbar 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. */
+ sku = dmi_get_system_info(DMI_PRODUCT_SKU);
+ if (!strcmp(sku, "HI168"))
+ nvsw_sn2201->ext_pwr_source = 1;
+
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);
}
--
2.44.0
