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authorUwe Hermann <uwe@hermann-uwe.de>2010-11-15 19:35:14 +0000
committerUwe Hermann <uwe@hermann-uwe.de>2010-11-15 19:35:14 +0000
commita69d978be8a068944466e776de87527fb104a878 (patch)
tree8acf4247e3104ad9ccb940568a81e472105a674b /src/superio/smsc/lpc47n217
parent2e9323e5bef293c051d9fd982214e6db2e3305ee (diff)
downloadcoreboot-a69d978be8a068944466e776de87527fb104a878.tar.xz
C and other Super I/O cosmetic fixes.
- Random coding style, whitespace and cosmetic fixes. - Consistently use the same spacing and 4-hexdigit port number format in the pnp_dev_info[] arrays. - Drop dead/unused code and less useful comments. - Add missing "(C)" characters and copyright years. - Shorten and simplify some code snippets. - Use u8/u16/etc. everywhere. Signed-off-by: Uwe Hermann <uwe@hermann-uwe.de> Acked-by: Uwe Hermann <uwe@hermann-uwe.de> git-svn-id: svn://svn.coreboot.org/coreboot/trunk@6073 2b7e53f0-3cfb-0310-b3e9-8179ed1497e1
Diffstat (limited to 'src/superio/smsc/lpc47n217')
-rw-r--r--src/superio/smsc/lpc47n217/Makefile.inc2
-rw-r--r--src/superio/smsc/lpc47n217/lpc47n217_early_serial.c31
-rw-r--r--src/superio/smsc/lpc47n217/superio.c147
3 files changed, 67 insertions, 113 deletions
diff --git a/src/superio/smsc/lpc47n217/Makefile.inc b/src/superio/smsc/lpc47n217/Makefile.inc
index 1547ac4a23..947ea57d65 100644
--- a/src/superio/smsc/lpc47n217/Makefile.inc
+++ b/src/superio/smsc/lpc47n217/Makefile.inc
@@ -18,5 +18,5 @@
## Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
##
-#config chip.h
ramstage-$(CONFIG_SUPERIO_SMSC_LPC47N217) += superio.c
+
diff --git a/src/superio/smsc/lpc47n217/lpc47n217_early_serial.c b/src/superio/smsc/lpc47n217/lpc47n217_early_serial.c
index 34f2c4512b..ce79db8f0c 100644
--- a/src/superio/smsc/lpc47n217/lpc47n217_early_serial.c
+++ b/src/superio/smsc/lpc47n217/lpc47n217_early_serial.c
@@ -24,17 +24,15 @@
#include <assert.h>
#include "lpc47n217.h"
-/** Enable access to the LPC47N217's configuration registers. */
-static inline void pnp_enter_conf_state(device_t dev)
+static void pnp_enter_conf_state(device_t dev)
{
- unsigned port = dev>>8;
+ u16 port = dev >> 8;
outb(0x55, port);
}
-/** Disable access to the LPC47N217's configuration registers. */
static void pnp_exit_conf_state(device_t dev)
{
- unsigned port = dev>>8;
+ u16 port = dev >> 8;
outb(0xaa, port);
}
@@ -44,24 +42,21 @@ static void pnp_exit_conf_state(device_t dev)
* @param dev High 8 bits = Super I/O port, low 8 bits = logical device number.
* @param iobase Base I/O port for the logical device.
*/
-void lpc47n217_pnp_set_iobase(device_t dev, unsigned iobase)
+void lpc47n217_pnp_set_iobase(device_t dev, u16 iobase)
{
- /* LPC47N217 requires base ports to be a multiple of 4 */
+ /* LPC47N217 requires base ports to be a multiple of 4. */
ASSERT(!(iobase & 0x3));
switch(dev & 0xFF) {
case LPC47N217_PP:
pnp_write_config(dev, 0x23, (iobase >> 2) & 0xff);
break;
-
case LPC47N217_SP1:
pnp_write_config(dev, 0x24, (iobase >> 2) & 0xff);
break;
-
case LPC47N217_SP2:
pnp_write_config(dev, 0x25, (iobase >> 2) & 0xff);
break;
-
default:
break;
}
@@ -81,37 +76,29 @@ void lpc47n217_pnp_set_iobase(device_t dev, unsigned iobase)
*/
void lpc47n217_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 & 0xFF) {
case LPC47N217_PP:
power_register = 0x01;
power_mask = 0x04;
break;
-
case LPC47N217_SP1:
power_register = 0x02;
power_mask = 0x08;
break;
-
case LPC47N217_SP2:
power_register = 0x02;
power_mask = 0x80;
break;
-
default:
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)
- new_power |= power_mask; /* Enable */
-
+ new_power |= power_mask; /* Enable. */
pnp_write_config(dev, power_register, new_power);
}
@@ -122,7 +109,7 @@ void lpc47n217_pnp_set_enable(device_t dev, int enable)
* @param dev High 8 bits = Super I/O port, low 8 bits = logical device number.
* @param iobase Processor I/O port address to assign to this serial device.
*/
-static void lpc47n217_enable_serial(device_t dev, unsigned iobase)
+static void lpc47n217_enable_serial(device_t dev, u16 iobase)
{
/*
* NOTE: Cannot use pnp_set_XXX() here because they assume chip
diff --git a/src/superio/smsc/lpc47n217/superio.c b/src/superio/smsc/lpc47n217/superio.c
index 95277cd42c..4cc580643f 100644
--- a/src/superio/smsc/lpc47n217/superio.c
+++ b/src/superio/smsc/lpc47n217/superio.c
@@ -22,7 +22,6 @@
*/
/* RAM-based driver for SMSC LPC47N217 Super I/O chip. */
-/* Based on coreboot code for SMSC 47B397. */
#include <arch/io.h>
#include <device/device.h>
@@ -43,13 +42,11 @@ static void lpc47n217_pnp_set_resources(device_t dev);
static void lpc47n217_pnp_enable_resources(device_t dev);
static void lpc47n217_pnp_enable(device_t dev);
static void lpc47n217_init(device_t dev);
-
static void lpc47n217_pnp_set_resource(device_t dev, struct resource *resource);
-static void lpc47n217_pnp_set_iobase(device_t dev, unsigned iobase);
-static void lpc47n217_pnp_set_drq(device_t dev, unsigned drq);
-static void lpc47n217_pnp_set_irq(device_t dev, unsigned irq);
+static void lpc47n217_pnp_set_iobase(device_t dev, u16 iobase);
+static void lpc47n217_pnp_set_drq(device_t dev, u8 drq);
+static void lpc47n217_pnp_set_irq(device_t dev, u8 irq);
static void lpc47n217_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);
@@ -67,9 +64,9 @@ static struct device_operations ops = {
};
static struct pnp_info pnp_dev_info[] = {
- { &ops, LPC47N217_PP, PNP_IO0 | PNP_IRQ0 | PNP_DRQ0, { 0x07f8, 0}, },
- { &ops, LPC47N217_SP1, PNP_IO0 | PNP_IRQ0, { 0x7f8, 0 }, },
- { &ops, LPC47N217_SP2, PNP_IO0 | PNP_IRQ0, { 0x7f8, 0 }, }
+ { &ops, LPC47N217_PP, PNP_IO0 | PNP_IRQ0 | PNP_DRQ0, {0x07f8, 0}, },
+ { &ops, LPC47N217_SP1, PNP_IO0 | PNP_IRQ0, {0x07f8, 0}, },
+ { &ops, LPC47N217_SP2, PNP_IO0 | PNP_IRQ0, {0x07f8, 0}, }
};
/**
@@ -88,6 +85,9 @@ static void enable_dev(device_t dev)
* 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 LPC47N217 doesn't have.
+ *
* @param dev Pointer to structure describing a Super I/O device.
*/
static void lpc47n217_pnp_set_resources(device_t dev)
@@ -95,46 +95,31 @@ static void lpc47n217_pnp_set_resources(device_t dev)
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 LPC47N217 doesn't have
- */
- for(res = dev->resource_list; res; res = res->next)
+ for (res = dev->resource_list; res; res = res->next)
lpc47n217_pnp_set_resource(dev, res);
-
/* dump_pnp_device(dev); */
-
pnp_exit_conf_state(dev);
}
+/*
+ * NOTE: Cannot use pnp_enable_resources() here because it assumes chip
+ * support for logical devices, which the LPC47N217 doesn't have.
+ */
static void lpc47n217_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 LPC47N217 doesn't have.
- */
lpc47n217_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 LPC47N217 doesn't have.
+ */
static void lpc47n217_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 LPC47N217 doesn't have.
- */
- if(dev->enabled) {
- lpc47n217_pnp_set_enable(dev, 1);
- }
- else {
- lpc47n217_pnp_set_enable(dev, 0);
- }
-
+ lpc47n217_pnp_set_enable(dev, (dev->enabled) ? 1 : 0);
pnp_exit_conf_state(dev);
}
@@ -159,7 +144,6 @@ static void lpc47n217_init(device_t dev)
res0 = find_resource(dev, PNP_IDX_IO0);
init_uart8250(res0->base, &conf->com1);
break;
-
case LPC47N217_SP2:
res0 = find_resource(dev, PNP_IDX_IO0);
init_uart8250(res0->base, &conf->com2);
@@ -171,27 +155,25 @@ static void lpc47n217_pnp_set_resource(device_t dev, struct resource *resource)
{
if (!(resource->flags & IORESOURCE_ASSIGNED)) {
printk(BIOS_ERR, "ERROR: %s %02x not allocated\n",
- dev_path(dev), resource->index);
+ dev_path(dev), resource->index);
return;
}
- /* Now store the resource */
+ /* Now store the resource. */
+
/*
* NOTE: Cannot use pnp_set_XXX() here because they assume chip
* support for logical devices, which the LPC47N217 doesn't have.
*/
if (resource->flags & IORESOURCE_IO) {
lpc47n217_pnp_set_iobase(dev, resource->base);
- }
- else if (resource->flags & IORESOURCE_DRQ) {
+ } else if (resource->flags & IORESOURCE_DRQ) {
lpc47n217_pnp_set_drq(dev, resource->base);
- }
- else if (resource->flags & IORESOURCE_IRQ) {
+ } else if (resource->flags & IORESOURCE_IRQ) {
lpc47n217_pnp_set_irq(dev, resource->base);
- }
- else {
+ } else {
printk(BIOS_ERR, "ERROR: %s %02x unknown resource type\n",
- dev_path(dev), resource->index);
+ dev_path(dev), resource->index);
return;
}
resource->flags |= IORESOURCE_STORED;
@@ -199,7 +181,7 @@ static void lpc47n217_pnp_set_resource(device_t dev, struct resource *resource)
report_resource_stored(dev, resource, "");
}
-static void lpc47n217_pnp_set_iobase(device_t dev, unsigned iobase)
+static void lpc47n217_pnp_set_iobase(device_t dev, u16 iobase)
{
ASSERT(!(iobase & 0x3));
@@ -207,30 +189,28 @@ static void lpc47n217_pnp_set_iobase(device_t dev, unsigned iobase)
case LPC47N217_PP:
pnp_write_config(dev, 0x23, (iobase >> 2) & 0xff);
break;
-
case LPC47N217_SP1:
pnp_write_config(dev, 0x24, (iobase >> 2) & 0xff);
break;
-
case LPC47N217_SP2:
pnp_write_config(dev, 0x25, (iobase >> 2) & 0xff);
break;
-
default:
BUG();
break;
}
}
-static void lpc47n217_pnp_set_drq(device_t dev, unsigned drq)
+static void lpc47n217_pnp_set_drq(device_t dev, u8 drq)
{
- if (dev->path.pnp.device == LPC47N217_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 == LPC47N217_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 {
@@ -238,36 +218,31 @@ static void lpc47n217_pnp_set_drq(device_t dev, unsigned drq)
}
}
-static void lpc47n217_pnp_set_irq(device_t dev, unsigned irq)
+static void lpc47n217_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 LPC47N217_PP:
irq_config_register = 0x27;
irq_config_mask = 0x0F;
break;
-
case LPC47N217_SP1:
irq_config_register = 0x28;
irq_config_mask = 0xF0;
irq <<= 4;
break;
-
case LPC47N217_SP2:
irq_config_register = 0x28;
irq_config_mask = 0x0F;
break;
-
default:
BUG();
return;
}
- ASSERT(!(irq & ~irq_config_mask)); /* IRQ out of range?? */
+ ASSERT(!(irq & ~irq_config_mask)); /* IRQ out of range? */
current_config = pnp_read_config(dev, irq_config_register);
new_config = (current_config & ~irq_config_mask) | irq;
@@ -276,54 +251,44 @@ static void lpc47n217_pnp_set_irq(device_t dev, unsigned irq)
static void lpc47n217_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 LPC47N217_PP:
power_register = 0x01;
power_mask = 0x04;
break;
-
case LPC47N217_SP1:
power_register = 0x02;
power_mask = 0x08;
break;
-
case LPC47N217_SP2:
power_register = 0x02;
power_mask = 0x80;
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);
lpc47n217_pnp_set_iobase(dev, ioport_resource->base);
-
- new_power |= power_mask; /* Enable */
-
+ new_power |= power_mask; /* Enable. */
} else {
lpc47n217_pnp_set_iobase(dev, 0);
}
pnp_write_config(dev, power_register, new_power);
}
-/** Enable access to the LPC47N217's configuration registers. */
static void pnp_enter_conf_state(device_t dev)
{
outb(0x55, dev->path.pnp.port);
}
-/** Disable access to the LPC47N217's configuration registers. */
static void pnp_exit_conf_state(device_t dev)
{
outb(0xaa, dev->path.pnp.port);
@@ -339,30 +304,32 @@ static void pnp_exit_conf_state(device_t dev)
*/
static void dump_pnp_device(device_t dev)
{
- int register_index;
+ int i;
print_debug("\n");
- for(register_index = 0; register_index <= LPC47N217_MAX_CONFIG_REGISTER; register_index++) {
- uint8_t register_value;
+ for (i = 0; i <= LPC47N217_MAX_CONFIG_REGISTER; i++) {
+ u8 register_value;
- if ((register_index & 0x0f) == 0) {
- print_debug_hex8(register_index);
+ if ((i & 0x0f) == 0) {
+ print_debug_hex8(i);
print_debug_char(':');
}
- /* Skip over 'register' that would cause exit from configuration mode */
- if (register_index == 0xaa)
+ /*
+ * Skip over 'register' that would cause exit from
+ * configuration mode.
+ */
+ if (i == 0xaa)
register_value = 0xaa;
else
- register_value = pnp_read_config(dev, register_index);
+ register_value = pnp_read_config(dev, i);
print_debug_char(' ');
print_debug_hex8(register_value);
- if ((register_index & 0x0f) == 0x0f) {
+ if ((i & 0x0f) == 0x0f)
print_debug("\n");
- }
}
- print_debug("\n");
+ print_debug("\n");
}
#endif