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path: root/drivers/mfd/lpc_ich.c
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Diffstat (limited to 'drivers/mfd/lpc_ich.c')
-rw-r--r--drivers/mfd/lpc_ich.c144
1 files changed, 111 insertions, 33 deletions
diff --git a/drivers/mfd/lpc_ich.c b/drivers/mfd/lpc_ich.c
index d9d930302e9..9f12f91d629 100644
--- a/drivers/mfd/lpc_ich.c
+++ b/drivers/mfd/lpc_ich.c
@@ -50,6 +50,7 @@
* document number TBD : Panther Point
* document number TBD : Lynx Point
* document number TBD : Lynx Point-LP
+ * document number TBD : Wellsburg
*/
#define pr_fmt(fmt) KBUILD_MODNAME ": " fmt
@@ -75,8 +76,10 @@
#define ACPIBASE_GCS_OFF 0x3410
#define ACPIBASE_GCS_END 0x3414
-#define GPIOBASE 0x48
-#define GPIOCTRL 0x4C
+#define GPIOBASE_ICH0 0x58
+#define GPIOCTRL_ICH0 0x5C
+#define GPIOBASE_ICH6 0x48
+#define GPIOCTRL_ICH6 0x4C
#define RCBABASE 0xf0
@@ -84,8 +87,17 @@
#define wdt_mem_res(i) wdt_res(ICH_RES_MEM_OFF, i)
#define wdt_res(b, i) (&wdt_ich_res[(b) + (i)])
-static int lpc_ich_acpi_save = -1;
-static int lpc_ich_gpio_save = -1;
+struct lpc_ich_cfg {
+ int base;
+ int ctrl;
+ int save;
+};
+
+struct lpc_ich_priv {
+ int chipset;
+ struct lpc_ich_cfg acpi;
+ struct lpc_ich_cfg gpio;
+};
static struct resource wdt_ich_res[] = {
/* ACPI - TCO */
@@ -194,6 +206,7 @@ enum lpc_chipsets {
LPC_PPT, /* Panther Point */
LPC_LPT, /* Lynx Point */
LPC_LPT_LP, /* Lynx Point-LP */
+ LPC_WBG, /* Wellsburg */
};
struct lpc_ich_info lpc_chipset_info[] = {
@@ -474,6 +487,10 @@ struct lpc_ich_info lpc_chipset_info[] = {
.name = "Lynx Point_LP",
.iTCO_version = 2,
},
+ [LPC_WBG] = {
+ .name = "Wellsburg",
+ .iTCO_version = 2,
+ },
};
/*
@@ -655,45 +672,82 @@ static DEFINE_PCI_DEVICE_TABLE(lpc_ich_ids) = {
{ PCI_VDEVICE(INTEL, 0x9c45), LPC_LPT_LP},
{ PCI_VDEVICE(INTEL, 0x9c46), LPC_LPT_LP},
{ PCI_VDEVICE(INTEL, 0x9c47), LPC_LPT_LP},
+ { PCI_VDEVICE(INTEL, 0x8d40), LPC_WBG},
+ { PCI_VDEVICE(INTEL, 0x8d41), LPC_WBG},
+ { PCI_VDEVICE(INTEL, 0x8d42), LPC_WBG},
+ { PCI_VDEVICE(INTEL, 0x8d43), LPC_WBG},
+ { PCI_VDEVICE(INTEL, 0x8d44), LPC_WBG},
+ { PCI_VDEVICE(INTEL, 0x8d45), LPC_WBG},
+ { PCI_VDEVICE(INTEL, 0x8d46), LPC_WBG},
+ { PCI_VDEVICE(INTEL, 0x8d47), LPC_WBG},
+ { PCI_VDEVICE(INTEL, 0x8d48), LPC_WBG},
+ { PCI_VDEVICE(INTEL, 0x8d49), LPC_WBG},
+ { PCI_VDEVICE(INTEL, 0x8d4a), LPC_WBG},
+ { PCI_VDEVICE(INTEL, 0x8d4b), LPC_WBG},
+ { PCI_VDEVICE(INTEL, 0x8d4c), LPC_WBG},
+ { PCI_VDEVICE(INTEL, 0x8d4d), LPC_WBG},
+ { PCI_VDEVICE(INTEL, 0x8d4e), LPC_WBG},
+ { PCI_VDEVICE(INTEL, 0x8d4f), LPC_WBG},
+ { PCI_VDEVICE(INTEL, 0x8d50), LPC_WBG},
+ { PCI_VDEVICE(INTEL, 0x8d51), LPC_WBG},
+ { PCI_VDEVICE(INTEL, 0x8d52), LPC_WBG},
+ { PCI_VDEVICE(INTEL, 0x8d53), LPC_WBG},
+ { PCI_VDEVICE(INTEL, 0x8d54), LPC_WBG},
+ { PCI_VDEVICE(INTEL, 0x8d55), LPC_WBG},
+ { PCI_VDEVICE(INTEL, 0x8d56), LPC_WBG},
+ { PCI_VDEVICE(INTEL, 0x8d57), LPC_WBG},
+ { PCI_VDEVICE(INTEL, 0x8d58), LPC_WBG},
+ { PCI_VDEVICE(INTEL, 0x8d59), LPC_WBG},
+ { PCI_VDEVICE(INTEL, 0x8d5a), LPC_WBG},
+ { PCI_VDEVICE(INTEL, 0x8d5b), LPC_WBG},
+ { PCI_VDEVICE(INTEL, 0x8d5c), LPC_WBG},
+ { PCI_VDEVICE(INTEL, 0x8d5d), LPC_WBG},
+ { PCI_VDEVICE(INTEL, 0x8d5e), LPC_WBG},
+ { PCI_VDEVICE(INTEL, 0x8d5f), LPC_WBG},
{ 0, }, /* End of list */
};
MODULE_DEVICE_TABLE(pci, lpc_ich_ids);
static void lpc_ich_restore_config_space(struct pci_dev *dev)
{
- if (lpc_ich_acpi_save >= 0) {
- pci_write_config_byte(dev, ACPICTRL, lpc_ich_acpi_save);
- lpc_ich_acpi_save = -1;
+ struct lpc_ich_priv *priv = pci_get_drvdata(dev);
+
+ if (priv->acpi.save >= 0) {
+ pci_write_config_byte(dev, priv->acpi.ctrl, priv->acpi.save);
+ priv->acpi.save = -1;
}
- if (lpc_ich_gpio_save >= 0) {
- pci_write_config_byte(dev, GPIOCTRL, lpc_ich_gpio_save);
- lpc_ich_gpio_save = -1;
+ if (priv->gpio.save >= 0) {
+ pci_write_config_byte(dev, priv->gpio.ctrl, priv->gpio.save);
+ priv->gpio.save = -1;
}
}
static void lpc_ich_enable_acpi_space(struct pci_dev *dev)
{
+ struct lpc_ich_priv *priv = pci_get_drvdata(dev);
u8 reg_save;
- pci_read_config_byte(dev, ACPICTRL, &reg_save);
- pci_write_config_byte(dev, ACPICTRL, reg_save | 0x10);
- lpc_ich_acpi_save = reg_save;
+ pci_read_config_byte(dev, priv->acpi.ctrl, &reg_save);
+ pci_write_config_byte(dev, priv->acpi.ctrl, reg_save | 0x10);
+ priv->acpi.save = reg_save;
}
static void lpc_ich_enable_gpio_space(struct pci_dev *dev)
{
+ struct lpc_ich_priv *priv = pci_get_drvdata(dev);
u8 reg_save;
- pci_read_config_byte(dev, GPIOCTRL, &reg_save);
- pci_write_config_byte(dev, GPIOCTRL, reg_save | 0x10);
- lpc_ich_gpio_save = reg_save;
+ pci_read_config_byte(dev, priv->gpio.ctrl, &reg_save);
+ pci_write_config_byte(dev, priv->gpio.ctrl, reg_save | 0x10);
+ priv->gpio.save = reg_save;
}
-static void lpc_ich_finalize_cell(struct mfd_cell *cell,
- const struct pci_device_id *id)
+static void lpc_ich_finalize_cell(struct pci_dev *dev, struct mfd_cell *cell)
{
- cell->platform_data = &lpc_chipset_info[id->driver_data];
+ struct lpc_ich_priv *priv = pci_get_drvdata(dev);
+
+ cell->platform_data = &lpc_chipset_info[priv->chipset];
cell->pdata_size = sizeof(struct lpc_ich_info);
}
@@ -721,9 +775,9 @@ static int lpc_ich_check_conflict_gpio(struct resource *res)
return use_gpio ? use_gpio : ret;
}
-static int lpc_ich_init_gpio(struct pci_dev *dev,
- const struct pci_device_id *id)
+static int lpc_ich_init_gpio(struct pci_dev *dev)
{
+ struct lpc_ich_priv *priv = pci_get_drvdata(dev);
u32 base_addr_cfg;
u32 base_addr;
int ret;
@@ -731,7 +785,7 @@ static int lpc_ich_init_gpio(struct pci_dev *dev,
struct resource *res;
/* Setup power management base register */
- pci_read_config_dword(dev, ACPIBASE, &base_addr_cfg);
+ pci_read_config_dword(dev, priv->acpi.base, &base_addr_cfg);
base_addr = base_addr_cfg & 0x0000ff80;
if (!base_addr) {
dev_notice(&dev->dev, "I/O space for ACPI uninitialized\n");
@@ -757,7 +811,7 @@ static int lpc_ich_init_gpio(struct pci_dev *dev,
gpe0_done:
/* Setup GPIO base register */
- pci_read_config_dword(dev, GPIOBASE, &base_addr_cfg);
+ pci_read_config_dword(dev, priv->gpio.base, &base_addr_cfg);
base_addr = base_addr_cfg & 0x0000ff80;
if (!base_addr) {
dev_notice(&dev->dev, "I/O space for GPIO uninitialized\n");
@@ -768,7 +822,7 @@ gpe0_done:
/* Older devices provide fewer GPIO and have a smaller resource size. */
res = &gpio_ich_res[ICH_RES_GPIO];
res->start = base_addr;
- switch (lpc_chipset_info[id->driver_data].gpio_version) {
+ switch (lpc_chipset_info[priv->chipset].gpio_version) {
case ICH_V5_GPIO:
case ICH_V10CORP_GPIO:
res->end = res->start + 128 - 1;
@@ -784,10 +838,10 @@ gpe0_done:
acpi_conflict = true;
goto gpio_done;
}
- lpc_chipset_info[id->driver_data].use_gpio = ret;
+ lpc_chipset_info[priv->chipset].use_gpio = ret;
lpc_ich_enable_gpio_space(dev);
- lpc_ich_finalize_cell(&lpc_ich_cells[LPC_GPIO], id);
+ lpc_ich_finalize_cell(dev, &lpc_ich_cells[LPC_GPIO]);
ret = mfd_add_devices(&dev->dev, -1, &lpc_ich_cells[LPC_GPIO],
1, NULL, 0, NULL);
@@ -798,16 +852,16 @@ gpio_done:
return ret;
}
-static int lpc_ich_init_wdt(struct pci_dev *dev,
- const struct pci_device_id *id)
+static int lpc_ich_init_wdt(struct pci_dev *dev)
{
+ struct lpc_ich_priv *priv = pci_get_drvdata(dev);
u32 base_addr_cfg;
u32 base_addr;
int ret;
struct resource *res;
/* Setup power management base register */
- pci_read_config_dword(dev, ACPIBASE, &base_addr_cfg);
+ pci_read_config_dword(dev, priv->acpi.base, &base_addr_cfg);
base_addr = base_addr_cfg & 0x0000ff80;
if (!base_addr) {
dev_notice(&dev->dev, "I/O space for ACPI uninitialized\n");
@@ -830,7 +884,7 @@ static int lpc_ich_init_wdt(struct pci_dev *dev,
* we have to read RCBA from PCI Config space 0xf0 and use
* it as base. GCS = RCBA + ICH6_GCS(0x3410).
*/
- if (lpc_chipset_info[id->driver_data].iTCO_version == 1) {
+ if (lpc_chipset_info[priv->chipset].iTCO_version == 1) {
/* Don't register iomem for TCO ver 1 */
lpc_ich_cells[LPC_WDT].num_resources--;
} else {
@@ -847,7 +901,7 @@ static int lpc_ich_init_wdt(struct pci_dev *dev,
res->end = base_addr + ACPIBASE_GCS_END;
}
- lpc_ich_finalize_cell(&lpc_ich_cells[LPC_WDT], id);
+ lpc_ich_finalize_cell(dev, &lpc_ich_cells[LPC_WDT]);
ret = mfd_add_devices(&dev->dev, -1, &lpc_ich_cells[LPC_WDT],
1, NULL, 0, NULL);
@@ -858,14 +912,36 @@ wdt_done:
static int lpc_ich_probe(struct pci_dev *dev,
const struct pci_device_id *id)
{
+ struct lpc_ich_priv *priv;
int ret;
bool cell_added = false;
- ret = lpc_ich_init_wdt(dev, id);
+ priv = devm_kzalloc(&dev->dev,
+ sizeof(struct lpc_ich_priv), GFP_KERNEL);
+ if (!priv)
+ return -ENOMEM;
+
+ priv->chipset = id->driver_data;
+ priv->acpi.save = -1;
+ priv->acpi.base = ACPIBASE;
+ priv->acpi.ctrl = ACPICTRL;
+
+ priv->gpio.save = -1;
+ if (priv->chipset <= LPC_ICH5) {
+ priv->gpio.base = GPIOBASE_ICH0;
+ priv->gpio.ctrl = GPIOCTRL_ICH0;
+ } else {
+ priv->gpio.base = GPIOBASE_ICH6;
+ priv->gpio.ctrl = GPIOCTRL_ICH6;
+ }
+
+ pci_set_drvdata(dev, priv);
+
+ ret = lpc_ich_init_wdt(dev);
if (!ret)
cell_added = true;
- ret = lpc_ich_init_gpio(dev, id);
+ ret = lpc_ich_init_gpio(dev);
if (!ret)
cell_added = true;
@@ -876,6 +952,7 @@ static int lpc_ich_probe(struct pci_dev *dev,
if (!cell_added) {
dev_warn(&dev->dev, "No MFD cells added\n");
lpc_ich_restore_config_space(dev);
+ pci_set_drvdata(dev, NULL);
return -ENODEV;
}
@@ -886,6 +963,7 @@ static void lpc_ich_remove(struct pci_dev *dev)
{
mfd_remove_devices(&dev->dev);
lpc_ich_restore_config_space(dev);
+ pci_set_drvdata(dev, NULL);
}
static struct pci_driver lpc_ich_driver = {
generated by cgit v1.2.3 (git 2.25.1) at 2024-06-17 00:25:06 +0000