#include "chip.h"
#include "lpc47n227.h"
-// Forward declarations
+/* Forward declarations. */
static void enable_dev(device_t dev);
void lpc47n227_pnp_set_resources(device_t dev);
void lpc47n227_pnp_enable_resources(device_t dev);
void lpc47n227_pnp_enable(device_t dev);
static void lpc47n227_init(device_t dev);
-
static void lpc47n227_pnp_set_resource(device_t dev, struct resource *resource);
-void lpc47n227_pnp_set_iobase(device_t dev, unsigned iobase);
-void lpc47n227_pnp_set_drq(device_t dev, unsigned drq);
-void lpc47n227_pnp_set_irq(device_t dev, unsigned irq);
+void lpc47n227_pnp_set_iobase(device_t dev, u16 iobase);
+void lpc47n227_pnp_set_drq(device_t dev, u8 drq);
+void lpc47n227_pnp_set_irq(device_t dev, u8 irq);
void lpc47n227_pnp_set_enable(device_t dev, int enable);
-
static void pnp_enter_conf_state(device_t dev);
static void pnp_exit_conf_state(device_t dev);
struct chip_operations superio_smsc_lpc47n227_ops = {
CHIP_NAME("SMSC LPC47N227 Super I/O")
- .enable_dev = enable_dev,
+ .enable_dev = enable_dev,
};
static struct device_operations ops = {
- .read_resources = pnp_read_resources,
- .set_resources = lpc47n227_pnp_set_resources,
+ .read_resources = pnp_read_resources,
+ .set_resources = lpc47n227_pnp_set_resources,
.enable_resources = lpc47n227_pnp_enable_resources,
- .enable = lpc47n227_pnp_enable,
- .init = lpc47n227_init,
+ .enable = lpc47n227_pnp_enable,
+ .init = lpc47n227_init,
};
static struct pnp_info pnp_dev_info[] = {
- {&ops, LPC47N227_PP, PNP_IO0 | PNP_IRQ0 | PNP_DRQ0, {0x07f8, 0},},
- {&ops, LPC47N227_SP1, PNP_IO0 | PNP_IRQ0, {0x7f8, 0},},
- {&ops, LPC47N227_SP2, PNP_IO0 | PNP_IRQ0, {0x7f8, 0},},
- {&ops, LPC47N227_KBDC, PNP_IO0 | PNP_IO1 | PNP_IRQ0, {0x7f8, 0},
- {0x7f8, 0x4},}
+ { &ops, LPC47N227_PP, PNP_IO0 | PNP_IRQ0 | PNP_DRQ0, {0x07f8, 0}, },
+ { &ops, LPC47N227_SP1, PNP_IO0 | PNP_IRQ0, {0x07f8, 0}, },
+ { &ops, LPC47N227_SP2, PNP_IO0 | PNP_IRQ0, {0x07f8, 0}, },
+ { &ops, LPC47N227_KBDC, PNP_IO0 | PNP_IO1 | PNP_IRQ0, {0x07f8, 0}, {0x07f8, 4}, },
};
-/**********************************************************************************/
-/* PUBLIC INTERFACE */
-/**********************************************************************************/
-
-//----------------------------------------------------------------------------------
-// Function: enable_dev
-// Parameters: dev - pointer to structure describing a Super I/O device
-// Return Value: None
-// Description: Create device structures and allocate resources to devices
-// specified in the pnp_dev_info array (above).
-//
+/**
+ * Create device structures and allocate resources to devices specified in the
+ * pnp_dev_info array (above).
+ *
+ * @param dev Pointer to structure describing a Super I/O device.
+ */
static void enable_dev(device_t dev)
{
pnp_enable_devices(dev, &pnp_ops,
ARRAY_SIZE(pnp_dev_info), pnp_dev_info);
}
-//----------------------------------------------------------------------------------
-// Function: lpc47n227_pnp_set_resources
-// Parameters: dev - pointer to structure describing a Super I/O device
-// Return Value: None
-// Description: Configure the specified Super I/O device with the resources
-// (I/O space, etc.) that have been allocate for it.
-//
+/**
+ * Configure the specified Super I/O device with the resources (I/O space,
+ * etc.) that have been allocate for it.
+ *
+ * NOTE: Cannot use pnp_set_resources() here because it assumes chip
+ * support for logical devices, which the LPC47N227 doesn't have.
+ *
+ * @param dev Pointer to structure describing a Super I/O device.
+ */
void lpc47n227_pnp_set_resources(device_t dev)
{
- int i;
+ struct resource *res;
pnp_enter_conf_state(dev);
-
- // NOTE: Cannot use pnp_set_resources() here because it assumes chip
- // support for logical devices, which the LPC47N227 doesn't have
- for (i = 0; i < dev->resources; i++)
- lpc47n227_pnp_set_resource(dev, &dev->resource[i]);
-
+ for (res = dev->resource_list; res; res = res->next)
+ lpc47n227_pnp_set_resource(dev, res);
pnp_exit_conf_state(dev);
}
+/*
+ * NOTE: Cannot use pnp_enable_resources() here because it assumes chip
+ * support for logical devices, which the LPC47N227 doesn't have.
+ */
void lpc47n227_pnp_enable_resources(device_t dev)
{
pnp_enter_conf_state(dev);
-
- // NOTE: Cannot use pnp_enable_resources() here because it assumes chip
- // support for logical devices, which the LPC47N227 doesn't have
lpc47n227_pnp_set_enable(dev, 1);
-
pnp_exit_conf_state(dev);
}
+/*
+ * NOTE: Cannot use pnp_set_enable() here because it assumes chip
+ * support for logical devices, which the LPC47N227 doesn't have.
+ */
void lpc47n227_pnp_enable(device_t dev)
{
pnp_enter_conf_state(dev);
-
- // NOTE: Cannot use pnp_set_enable() here because it assumes chip
- // support for logical devices, which the LPC47N227 doesn't have
-
- if (dev->enabled) {
- lpc47n227_pnp_set_enable(dev, 1);
- } else {
- lpc47n227_pnp_set_enable(dev, 0);
- }
-
+ lpc47n227_pnp_set_enable(dev, !!dev->enabled);
pnp_exit_conf_state(dev);
}
-//----------------------------------------------------------------------------------
-// Function: lpc47n227_init
-// Parameters: dev - pointer to structure describing a Super I/O device
-// Return Value: None
-// Description: Initialize the specified Super I/O device.
-// Devices other than COM ports and keyboard controller are ignored.
-// For COM ports, we configure the baud rate.
-//
+/**
+ * Initialize the specified Super I/O device.
+ *
+ * Devices other than COM ports and keyboard controller are ignored.
+ * For COM ports, we configure the baud rate.
+ *
+ * @param dev Pointer to structure describing a Super I/O device.
+ */
static void lpc47n227_init(device_t dev)
{
struct superio_smsc_lpc47n227_config *conf = dev->chip_info;
- struct resource *res0;
if (!dev->enabled)
return;
switch (dev->path.pnp.device) {
- case LPC47N227_SP1:
- res0 = find_resource(dev, PNP_IDX_IO0);
- init_uart8250(res0->base, &conf->com1);
- break;
-
- case LPC47N227_SP2:
- res0 = find_resource(dev, PNP_IDX_IO0);
- init_uart8250(res0->base, &conf->com2);
- break;
-
case LPC47N227_KBDC:
printk(BIOS_DEBUG, "LPC47N227: Initializing keyboard.\n");
pc_keyboard_init(&conf->keyboard);
}
}
-/**********************************************************************************/
-/* PRIVATE FUNCTIONS */
-/**********************************************************************************/
-
static void lpc47n227_pnp_set_resource(device_t dev, struct resource *resource)
{
if (!(resource->flags & IORESOURCE_ASSIGNED)) {
printk(BIOS_ERR, "ERROR: %s %02lx not allocated\n",
- dev_path(dev), resource->index);
+ dev_path(dev), resource->index);
return;
}
- /* Now store the resource */
- // NOTE: Cannot use pnp_set_XXX() here because they assume chip
- // support for logical devices, which the LPC47N227 doesn't have
-
+ /* Now store the resource. */
+ /*
+ * NOTE: Cannot use pnp_set_XXX() here because they assume chip
+ * support for logical devices, which the LPC47N227 doesn't have.
+ */
if (resource->flags & IORESOURCE_IO) {
lpc47n227_pnp_set_iobase(dev, resource->base);
} else if (resource->flags & IORESOURCE_DRQ) {
lpc47n227_pnp_set_irq(dev, resource->base);
} else {
printk(BIOS_ERR, "ERROR: %s %02lx unknown resource type\n",
- dev_path(dev), resource->index);
+ dev_path(dev), resource->index);
return;
}
resource->flags |= IORESOURCE_STORED;
report_resource_stored(dev, resource, "");
}
-void lpc47n227_pnp_set_iobase(device_t dev, unsigned iobase)
+void lpc47n227_pnp_set_iobase(device_t dev, u16 iobase)
{
ASSERT(!(iobase & 0x3));
case LPC47N227_PP:
pnp_write_config(dev, 0x23, (iobase >> 2) & 0xff);
break;
-
case LPC47N227_SP1:
pnp_write_config(dev, 0x24, (iobase >> 2) & 0xff);
break;
-
case LPC47N227_SP2:
pnp_write_config(dev, 0x25, (iobase >> 2) & 0xff);
break;
-
case LPC47N227_KBDC:
break;
-
default:
BUG();
break;
}
}
-void lpc47n227_pnp_set_drq(device_t dev, unsigned drq)
+void lpc47n227_pnp_set_drq(device_t dev, u8 drq)
{
- if (dev->path.pnp.device == LPC47N227_PP) {
- const uint8_t PP_DMA_MASK = 0x0F;
- const uint8_t PP_DMA_SELECTION_REGISTER = 0x26;
- uint8_t current_config =
- pnp_read_config(dev, PP_DMA_SELECTION_REGISTER);
- uint8_t new_config;
+ const u8 PP_DMA_MASK = 0x0F;
+ const u8 PP_DMA_SELECTION_REGISTER = 0x26;
+ u8 current_config, new_config;
- ASSERT(!(drq & ~PP_DMA_MASK)); // DRQ out of range??
+ if (dev->path.pnp.device == LPC47N227_PP) {
+ current_config = pnp_read_config(dev,
+ PP_DMA_SELECTION_REGISTER);
+ ASSERT(!(drq & ~PP_DMA_MASK)); // DRQ out of range??
new_config = (current_config & ~PP_DMA_MASK) | drq;
pnp_write_config(dev, PP_DMA_SELECTION_REGISTER, new_config);
} else {
}
}
-void lpc47n227_pnp_set_irq(device_t dev, unsigned irq)
+void lpc47n227_pnp_set_irq(device_t dev, u8 irq)
{
- uint8_t irq_config_register = 0;
- uint8_t irq_config_mask = 0;
- uint8_t current_config;
- uint8_t new_config;
+ u8 irq_config_register = 0, irq_config_mask = 0;
+ u8 current_config, new_config;
switch (dev->path.pnp.device) {
case LPC47N227_PP:
irq_config_register = 0x27;
irq_config_mask = 0x0F;
break;
-
case LPC47N227_SP1:
irq_config_register = 0x28;
irq_config_mask = 0xF0;
irq <<= 4;
break;
-
case LPC47N227_SP2:
irq_config_register = 0x28;
irq_config_mask = 0x0F;
break;
-
case LPC47N227_KBDC:
break;
-
default:
BUG();
return;
void lpc47n227_pnp_set_enable(device_t dev, int enable)
{
- uint8_t power_register = 0;
- uint8_t power_mask = 0;
- uint8_t current_power;
- uint8_t new_power;
+ u8 power_register = 0, power_mask = 0, current_power, new_power;
switch (dev->path.pnp.device) {
case LPC47N227_PP:
power_register = 0x01;
power_mask = 0x04;
break;
-
case LPC47N227_SP1:
power_register = 0x02;
power_mask = 0x08;
break;
-
case LPC47N227_SP2:
power_register = 0x02;
power_mask = 0x80;
break;
-
case LPC47N227_KBDC:
break;
-
default:
BUG();
return;
}
current_power = pnp_read_config(dev, power_register);
- new_power = current_power & ~power_mask; // disable by default
-
+ new_power = current_power & ~power_mask; /* Disable by default. */
if (enable) {
- struct resource *ioport_resource =
- find_resource(dev, PNP_IDX_IO0);
+ struct resource *ioport_resource;
+ ioport_resource = find_resource(dev, PNP_IDX_IO0);
lpc47n227_pnp_set_iobase(dev, ioport_resource->base);
-
- new_power |= power_mask; // Enable
-
+ new_power |= power_mask; /* Enable. */
} else {
lpc47n227_pnp_set_iobase(dev, 0);
}
pnp_write_config(dev, power_register, new_power);
}
-//----------------------------------------------------------------------------------
-// Function: pnp_enter_conf_state
-// Parameters: dev - pointer to structure describing a Super I/O device
-// Return Value: None
-// Description: Enable access to the LPC47N227's configuration registers.
-//
static void pnp_enter_conf_state(device_t dev)
{
outb(0x55, dev->path.pnp.port);
}
-//----------------------------------------------------------------------------------
-// Function: pnp_exit_conf_state
-// Parameters: dev - pointer to structure describing a Super I/O device
-// Return Value: None
-// Description: Disable access to the LPC47N227's configuration registers.
-//
static void pnp_exit_conf_state(device_t dev)
{
outb(0xaa, dev->path.pnp.port);
}
-
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