/* LPC bus IO offsets */
#define MLXPLAT_CPLD_LPC_I2C_BASE_ADRR 0x2000
#define MLXPLAT_CPLD_LPC_REG_BASE_ADRR 0x2500
+#define MLXPLAT_CPLD_LPC_REG_CPLD1_VER_OFFSET 0x00
+#define MLXPLAT_CPLD_LPC_REG_CPLD2_VER_OFFSET 0x01
+#define MLXPLAT_CPLD_LPC_REG_RESET_CAUSE_OFFSET 0x1d
#define MLXPLAT_CPLD_LPC_REG_LED1_OFFSET 0x20
#define MLXPLAT_CPLD_LPC_REG_LED2_OFFSET 0x21
#define MLXPLAT_CPLD_LPC_REG_LED3_OFFSET 0x22
#define MLXPLAT_CPLD_LPC_REG_LED4_OFFSET 0x23
#define MLXPLAT_CPLD_LPC_REG_LED5_OFFSET 0x24
+#define MLXPLAT_CPLD_LPC_REG_GP1_OFFSET 0x30
+#define MLXPLAT_CPLD_LPC_REG_WP1_OFFSET 0x31
+#define MLXPLAT_CPLD_LPC_REG_GP2_OFFSET 0x32
+#define MLXPLAT_CPLD_LPC_REG_WP2_OFFSET 0x33
#define MLXPLAT_CPLD_LPC_REG_AGGR_OFFSET 0x3a
#define MLXPLAT_CPLD_LPC_REG_AGGR_MASK_OFFSET 0x3b
#define MLXPLAT_CPLD_LPC_REG_AGGRLO_OFFSET 0x40
#define MLXPLAT_CPLD_LPC_REG_AGGRLO_MASK_OFFSET 0x41
+#define MLXPLAT_CPLD_LPC_REG_ASIC_HEALTH_OFFSET 0x50
#define MLXPLAT_CPLD_LPC_REG_PSU_OFFSET 0x58
#define MLXPLAT_CPLD_LPC_REG_PSU_EVENT_OFFSET 0x59
#define MLXPLAT_CPLD_LPC_REG_PSU_MASK_OFFSET 0x5a
* @pdev_mux - array of mux platform devices
* @pdev_hotplug - hotplug platform devices
* @pdev_led - led platform devices
+ * @pdev_io_regs - register access platform devices
*/
struct mlxplat_priv {
struct platform_device *pdev_i2c;
struct platform_device *pdev_mux[MLXPLAT_CPLD_LPC_MUX_DEVS];
struct platform_device *pdev_hotplug;
struct platform_device *pdev_led;
+ struct platform_device *pdev_io_regs;
};
/* Regions for LPC I2C controller and LPC base register space */
.counter = ARRAY_SIZE(mlxplat_mlxcpld_default_ng_led_data),
};
+/* Platform register access default */
+static struct mlxreg_core_data mlxplat_mlxcpld_default_regs_io_data[] = {
+ {
+ .label = "cpld1_version",
+ .reg = MLXPLAT_CPLD_LPC_REG_CPLD1_VER_OFFSET,
+ .bit = GENMASK(7, 0),
+ .mode = 0444,
+ },
+ {
+ .label = "cpld2_version",
+ .reg = MLXPLAT_CPLD_LPC_REG_CPLD2_VER_OFFSET,
+ .bit = GENMASK(7, 0),
+ .mode = 0444,
+ },
+ {
+ .label = "reset_long_pb",
+ .reg = MLXPLAT_CPLD_LPC_REG_RESET_CAUSE_OFFSET,
+ .mask = GENMASK(7, 0) & ~BIT(0),
+ .mode = 0444,
+ },
+ {
+ .label = "reset_short_pb",
+ .reg = MLXPLAT_CPLD_LPC_REG_RESET_CAUSE_OFFSET,
+ .mask = GENMASK(7, 0) & ~BIT(1),
+ .mode = 0444,
+ },
+ {
+ .label = "reset_aux_pwr_or_ref",
+ .reg = MLXPLAT_CPLD_LPC_REG_RESET_CAUSE_OFFSET,
+ .mask = GENMASK(7, 0) & ~BIT(2),
+ .mode = 0444,
+ },
+ {
+ .label = "reset_main_pwr_fail",
+ .reg = MLXPLAT_CPLD_LPC_REG_RESET_CAUSE_OFFSET,
+ .mask = GENMASK(7, 0) & ~BIT(3),
+ .mode = 0444,
+ },
+ {
+ .label = "reset_sw_reset",
+ .reg = MLXPLAT_CPLD_LPC_REG_RESET_CAUSE_OFFSET,
+ .mask = GENMASK(7, 0) & ~BIT(4),
+ .mode = 0444,
+ },
+ {
+ .label = "reset_fw_reset",
+ .reg = MLXPLAT_CPLD_LPC_REG_RESET_CAUSE_OFFSET,
+ .mask = GENMASK(7, 0) & ~BIT(5),
+ .mode = 0444,
+ },
+ {
+ .label = "reset_hotswap_or_wd",
+ .reg = MLXPLAT_CPLD_LPC_REG_RESET_CAUSE_OFFSET,
+ .mask = GENMASK(7, 0) & ~BIT(6),
+ .mode = 0444,
+ },
+ {
+ .label = "reset_asic_thermal",
+ .reg = MLXPLAT_CPLD_LPC_REG_RESET_CAUSE_OFFSET,
+ .mask = GENMASK(7, 0) & ~BIT(7),
+ .mode = 0444,
+ },
+ {
+ .label = "psu1_on",
+ .reg = MLXPLAT_CPLD_LPC_REG_GP1_OFFSET,
+ .mask = GENMASK(7, 0) & ~BIT(0),
+ .mode = 0200,
+ },
+ {
+ .label = "psu2_on",
+ .reg = MLXPLAT_CPLD_LPC_REG_GP1_OFFSET,
+ .mask = GENMASK(7, 0) & ~BIT(1),
+ .mode = 0200,
+ },
+ {
+ .label = "pwr_cycle",
+ .reg = MLXPLAT_CPLD_LPC_REG_GP1_OFFSET,
+ .mask = GENMASK(7, 0) & ~BIT(2),
+ .mode = 0200,
+ },
+ {
+ .label = "pwr_down",
+ .reg = MLXPLAT_CPLD_LPC_REG_GP1_OFFSET,
+ .mask = GENMASK(7, 0) & ~BIT(3),
+ .mode = 0200,
+ },
+ {
+ .label = "select_iio",
+ .reg = MLXPLAT_CPLD_LPC_REG_GP2_OFFSET,
+ .mask = GENMASK(7, 0) & ~BIT(6),
+ .mode = 0644,
+ },
+ {
+ .label = "asic_health",
+ .reg = MLXPLAT_CPLD_LPC_REG_ASIC_HEALTH_OFFSET,
+ .mask = GENMASK(1, 0),
+ .bit = 1,
+ .mode = 0444,
+ },
+};
+
+static struct mlxreg_core_platform_data mlxplat_default_regs_io_data = {
+ .data = mlxplat_mlxcpld_default_regs_io_data,
+ .counter = ARRAY_SIZE(mlxplat_mlxcpld_default_regs_io_data),
+};
static bool mlxplat_mlxcpld_writeable_reg(struct device *dev, unsigned int reg)
{
case MLXPLAT_CPLD_LPC_REG_LED3_OFFSET:
case MLXPLAT_CPLD_LPC_REG_LED4_OFFSET:
case MLXPLAT_CPLD_LPC_REG_LED5_OFFSET:
+ case MLXPLAT_CPLD_LPC_REG_GP1_OFFSET:
+ case MLXPLAT_CPLD_LPC_REG_WP1_OFFSET:
+ case MLXPLAT_CPLD_LPC_REG_GP2_OFFSET:
+ case MLXPLAT_CPLD_LPC_REG_WP2_OFFSET:
case MLXPLAT_CPLD_LPC_REG_AGGR_MASK_OFFSET:
case MLXPLAT_CPLD_LPC_REG_AGGRLO_MASK_OFFSET:
case MLXPLAT_CPLD_LPC_REG_PSU_EVENT_OFFSET:
static bool mlxplat_mlxcpld_readable_reg(struct device *dev, unsigned int reg)
{
switch (reg) {
+ case MLXPLAT_CPLD_LPC_REG_CPLD1_VER_OFFSET:
+ case MLXPLAT_CPLD_LPC_REG_CPLD2_VER_OFFSET:
+ case MLXPLAT_CPLD_LPC_REG_RESET_CAUSE_OFFSET:
case MLXPLAT_CPLD_LPC_REG_LED1_OFFSET:
case MLXPLAT_CPLD_LPC_REG_LED2_OFFSET:
case MLXPLAT_CPLD_LPC_REG_LED3_OFFSET:
case MLXPLAT_CPLD_LPC_REG_LED4_OFFSET:
case MLXPLAT_CPLD_LPC_REG_LED5_OFFSET:
+ case MLXPLAT_CPLD_LPC_REG_GP1_OFFSET:
+ case MLXPLAT_CPLD_LPC_REG_WP1_OFFSET:
+ case MLXPLAT_CPLD_LPC_REG_GP2_OFFSET:
+ case MLXPLAT_CPLD_LPC_REG_WP2_OFFSET:
case MLXPLAT_CPLD_LPC_REG_AGGR_OFFSET:
case MLXPLAT_CPLD_LPC_REG_AGGR_MASK_OFFSET:
case MLXPLAT_CPLD_LPC_REG_AGGRLO_OFFSET:
case MLXPLAT_CPLD_LPC_REG_AGGRLO_MASK_OFFSET:
+ case MLXPLAT_CPLD_LPC_REG_ASIC_HEALTH_OFFSET:
case MLXPLAT_CPLD_LPC_REG_PSU_OFFSET:
case MLXPLAT_CPLD_LPC_REG_PSU_EVENT_OFFSET:
case MLXPLAT_CPLD_LPC_REG_PSU_MASK_OFFSET:
static bool mlxplat_mlxcpld_volatile_reg(struct device *dev, unsigned int reg)
{
switch (reg) {
+ case MLXPLAT_CPLD_LPC_REG_CPLD1_VER_OFFSET:
+ case MLXPLAT_CPLD_LPC_REG_CPLD2_VER_OFFSET:
+ case MLXPLAT_CPLD_LPC_REG_RESET_CAUSE_OFFSET:
case MLXPLAT_CPLD_LPC_REG_LED1_OFFSET:
case MLXPLAT_CPLD_LPC_REG_LED2_OFFSET:
case MLXPLAT_CPLD_LPC_REG_LED3_OFFSET:
case MLXPLAT_CPLD_LPC_REG_LED4_OFFSET:
case MLXPLAT_CPLD_LPC_REG_LED5_OFFSET:
+ case MLXPLAT_CPLD_LPC_REG_GP1_OFFSET:
+ case MLXPLAT_CPLD_LPC_REG_GP2_OFFSET:
case MLXPLAT_CPLD_LPC_REG_AGGR_OFFSET:
case MLXPLAT_CPLD_LPC_REG_AGGR_MASK_OFFSET:
case MLXPLAT_CPLD_LPC_REG_AGGRLO_OFFSET:
case MLXPLAT_CPLD_LPC_REG_AGGRLO_MASK_OFFSET:
+ case MLXPLAT_CPLD_LPC_REG_ASIC_HEALTH_OFFSET:
case MLXPLAT_CPLD_LPC_REG_PSU_OFFSET:
case MLXPLAT_CPLD_LPC_REG_PSU_EVENT_OFFSET:
case MLXPLAT_CPLD_LPC_REG_PSU_MASK_OFFSET:
return false;
}
+static const struct reg_default mlxplat_mlxcpld_regmap_default[] = {
+ { MLXPLAT_CPLD_LPC_REG_WP1_OFFSET, 0x00 },
+ { MLXPLAT_CPLD_LPC_REG_WP2_OFFSET, 0x00 },
+};
+
struct mlxplat_mlxcpld_regmap_context {
void __iomem *base;
};
.writeable_reg = mlxplat_mlxcpld_writeable_reg,
.readable_reg = mlxplat_mlxcpld_readable_reg,
.volatile_reg = mlxplat_mlxcpld_volatile_reg,
+ .reg_defaults = mlxplat_mlxcpld_regmap_default,
+ .num_reg_defaults = ARRAY_SIZE(mlxplat_mlxcpld_regmap_default),
.reg_read = mlxplat_mlxcpld_reg_read,
.reg_write = mlxplat_mlxcpld_reg_write,
};
static struct platform_device *mlxplat_dev;
static struct mlxreg_core_hotplug_platform_data *mlxplat_hotplug;
static struct mlxreg_core_platform_data *mlxplat_led;
+static struct mlxreg_core_platform_data *mlxplat_regs_io;
static int __init mlxplat_dmi_default_matched(const struct dmi_system_id *dmi)
{
mlxplat_hotplug->deferred_nr =
mlxplat_default_channels[i - 1][MLXPLAT_CPLD_GRP_CHNL_NUM - 1];
mlxplat_led = &mlxplat_default_led_data;
+ mlxplat_regs_io = &mlxplat_default_regs_io_data;
return 1;
};
mlxplat_hotplug->deferred_nr =
mlxplat_msn21xx_channels[MLXPLAT_CPLD_GRP_CHNL_NUM - 1];
mlxplat_led = &mlxplat_default_led_data;
+ mlxplat_regs_io = &mlxplat_default_regs_io_data;
return 1;
};
static int __init mlxplat_init(void)
{
struct mlxplat_priv *priv;
- int i, nr, err;
+ int i, j, nr, err;
if (!dmi_check_system(mlxplat_dmi_table))
return -ENODEV;
goto fail_platform_mux_register;
}
+ /* Set default registers. */
+ for (j = 0; j < mlxplat_mlxcpld_regmap_config.num_reg_defaults; j++) {
+ err = regmap_write(mlxplat_hotplug->regmap,
+ mlxplat_mlxcpld_regmap_default[j].reg,
+ mlxplat_mlxcpld_regmap_default[j].def);
+ if (err)
+ goto fail_platform_mux_register;
+ }
+
/* Add LED driver. */
mlxplat_led->regmap = mlxplat_hotplug->regmap;
priv->pdev_led = platform_device_register_resndata(
goto fail_platform_hotplug_register;
}
+ /* Add registers io access driver. */
+ if (mlxplat_regs_io) {
+ mlxplat_regs_io->regmap = mlxplat_hotplug->regmap;
+ priv->pdev_io_regs = platform_device_register_resndata(
+ &mlxplat_dev->dev, "mlxreg-io",
+ PLATFORM_DEVID_NONE, NULL, 0,
+ mlxplat_regs_io,
+ sizeof(*mlxplat_regs_io));
+ if (IS_ERR(priv->pdev_io_regs)) {
+ err = PTR_ERR(priv->pdev_io_regs);
+ goto fail_platform_led_register;
+ }
+ }
+
/* Sync registers with hardware. */
regcache_mark_dirty(mlxplat_hotplug->regmap);
err = regcache_sync(mlxplat_hotplug->regmap);
if (err)
- goto fail_platform_led_register;
+ goto fail_platform_io_regs_register;
return 0;
+fail_platform_io_regs_register:
+ if (mlxplat_regs_io)
+ platform_device_unregister(priv->pdev_io_regs);
fail_platform_led_register:
platform_device_unregister(priv->pdev_led);
fail_platform_hotplug_register:
struct mlxplat_priv *priv = platform_get_drvdata(mlxplat_dev);
int i;
+ if (priv->pdev_io_regs)
+ platform_device_unregister(priv->pdev_io_regs);
platform_device_unregister(priv->pdev_led);
platform_device_unregister(priv->pdev_hotplug);