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-rw-r--r--src/drivers/pc80/keyboard.c100
1 files changed, 55 insertions, 45 deletions
diff --git a/src/drivers/pc80/keyboard.c b/src/drivers/pc80/keyboard.c
index e389329710..dd6321e139 100644
--- a/src/drivers/pc80/keyboard.c
+++ b/src/drivers/pc80/keyboard.c
@@ -19,7 +19,6 @@
* Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
*/
-
#include <console/console.h>
#include <pc80/keyboard.h>
#include <device/device.h>
@@ -32,14 +31,14 @@
#define KBD_DATA 0x60
#define KBD_COMMAND 0x64
#define KBD_STATUS 0x64
-#define KBD_IBF (1 << 1) // 1: input buffer full (data ready for ec)
-#define KBD_OBF (1 << 0) // 1: output buffer full (data ready for host)
+#define KBD_IBF (1 << 1) // 1: input buffer full (data ready for ec)
+#define KBD_OBF (1 << 0) // 1: output buffer full (data ready for host)
// Keyboard Controller Commands
-#define KBC_CMD_READ_COMMAND 0x20 // Read command byte
-#define KBC_CMD_WRITE_COMMAND 0x60 // Write command byte
-#define KBC_CMD_SELF_TEST 0xAA // Controller self-test
-#define KBC_CMD_KBD_TEST 0xAB // Keyboard Interface test
+#define KBC_CMD_READ_COMMAND 0x20 // Read command byte
+#define KBC_CMD_WRITE_COMMAND 0x60 // Write command byte
+#define KBC_CMD_SELF_TEST 0xAA // Controller self-test
+#define KBC_CMD_KBD_TEST 0xAB // Keyboard Interface test
/* The Keyboard controller command byte
* BIT | Description
@@ -55,14 +54,14 @@
*/
// Keyboard Controller Replies
-#define KBC_REPLY_SELFTEST_OK 0x55 // controller self-test succeeded
+#define KBC_REPLY_SELFTEST_OK 0x55 // controller self-test succeeded
//
// Keyboard Replies
//
-#define KBD_REPLY_POR 0xAA // Power on reset
-#define KBD_REPLY_ACK 0xFA // Command ACK
-#define KBD_REPLY_RESEND 0xFE // Command NACK, send command again
+#define KBD_REPLY_POR 0xAA // Power on reset
+#define KBD_REPLY_ACK 0xFA // Command ACK
+#define KBD_REPLY_RESEND 0xFE // Command NACK, send command again
/* Wait 400ms for keyboard controller answers */
#define KBC_TIMEOUT_IN_MS 400
@@ -70,43 +69,43 @@
static int kbc_input_buffer_empty(void)
{
u32 timeout;
- for(timeout = KBC_TIMEOUT_IN_MS; timeout && (inb(KBD_STATUS) & KBD_IBF); timeout--) {
+ for (timeout = KBC_TIMEOUT_IN_MS;
+ timeout && (inb(KBD_STATUS) & KBD_IBF); timeout--)
mdelay(1);
- }
- if (!timeout) {
- printk(BIOS_WARNING, "Unexpected Keyboard controller input buffer full\n");
- }
+ if (!timeout)
+ printk(BIOS_WARNING,
+ "Unexpected Keyboard controller input buffer full\n");
return !!timeout;
}
-
static int kbc_output_buffer_full(void)
{
u32 timeout;
- for(timeout = KBC_TIMEOUT_IN_MS; timeout && ((inb(KBD_STATUS) & KBD_OBF) == 0); timeout--) {
+ for (timeout = KBC_TIMEOUT_IN_MS;
+ timeout && ((inb(KBD_STATUS) & KBD_OBF) == 0); timeout--)
mdelay(1);
- }
- if (!timeout) {
- printk(BIOS_INFO, "Keyboard controller output buffer result timeout\n");
- }
+ if (!timeout)
+ printk(BIOS_INFO,
+ "Keyboard controller output buffer result timeout\n");
return !!timeout;
}
-
static int kbc_cleanup_buffers(void)
{
u32 timeout;
- for(timeout = KBC_TIMEOUT_IN_MS; timeout && (inb(KBD_STATUS) & (KBD_OBF | KBD_IBF)); timeout--) {
+ for (timeout = KBC_TIMEOUT_IN_MS;
+ timeout && (inb(KBD_STATUS) & (KBD_OBF | KBD_IBF)); timeout--) {
mdelay(1);
inb(KBD_DATA);
}
if (!timeout) {
- printk(BIOS_ERR, "Couldn't cleanup the keyboard controller buffers\n");
+ printk(BIOS_ERR,
+ "Couldn't cleanup the keyboard controller buffers\n");
printk(BIOS_ERR, "Status (0x%x): 0x%x, Buffer (0x%x): 0x%x\n",
- KBD_STATUS, inb(KBD_STATUS), KBD_DATA, inb(KBD_DATA));
+ KBD_STATUS, inb(KBD_STATUS), KBD_DATA, inb(KBD_DATA));
}
return !!timeout;
@@ -136,7 +135,7 @@ static int kbc_self_test(void)
if (self_test != 0x55) {
printk(BIOS_ERR, "Keyboard Controller self-test failed: 0x%x\n",
- self_test);
+ self_test);
return 0;
}
@@ -156,7 +155,7 @@ static int kbc_self_test(void)
if (self_test != 0x00) {
printk(BIOS_ERR, "Keyboard Interface test failed: 0x%x\n",
- self_test);
+ self_test);
return 0;
}
@@ -169,19 +168,21 @@ static u8 send_keyboard(u8 command)
u8 resend = 10;
do {
- if (!kbc_input_buffer_empty()) return 0;
+ if (!kbc_input_buffer_empty())
+ return 0;
outb(command, KBD_DATA);
/* the reset command takes much longer then normal commands and
* even worse, some keyboards do send the ACK _after_ doing the
* reset */
if (command == 0xFF) {
u8 retries;
- for (retries = 9; retries && !kbc_output_buffer_full(); retries--)
- ;
+ for (retries = 9; retries && !kbc_output_buffer_full();
+ retries--) ;
}
if (!kbc_output_buffer_full()) {
- printk(BIOS_ERR, "Could not send keyboard command %02x\n",
- command);
+ printk(BIOS_ERR,
+ "Could not send keyboard command %02x\n",
+ command);
return 0;
}
regval = inb(KBD_DATA);
@@ -210,9 +211,11 @@ void pc_keyboard_init(struct pc_keyboard *keyboard)
return;
/* Enable keyboard interface - No IRQ */
- if (!kbc_input_buffer_empty()) return;
+ if (!kbc_input_buffer_empty())
+ return;
outb(0x60, KBD_COMMAND);
- if (!kbc_input_buffer_empty()) return;
+ if (!kbc_input_buffer_empty())
+ return;
outb(0x20, KBD_DATA); /* send cmd: enable keyboard */
if (!kbc_input_buffer_empty()) {
printk(BIOS_INFO, "Timeout while enabling keyboard\n");
@@ -220,7 +223,8 @@ void pc_keyboard_init(struct pc_keyboard *keyboard)
}
/* clean up any junk that might have been in the keyboard */
- if (!kbc_cleanup_buffers()) return;
+ if (!kbc_cleanup_buffers())
+ return;
/* reset keyboard and self test (keyboard side) */
regval = send_keyboard(0xFF);
@@ -236,8 +240,7 @@ void pc_keyboard_init(struct pc_keyboard *keyboard)
}
/* the reset command takes some time, so wait a little longer */
- for (retries = 9; retries && !kbc_output_buffer_full(); retries--)
- ;
+ for (retries = 9; retries && !kbc_output_buffer_full(); retries--) ;
if (!kbc_output_buffer_full()) {
printk(BIOS_ERR, "Timeout waiting for keyboard after reset.\n");
@@ -246,7 +249,8 @@ void pc_keyboard_init(struct pc_keyboard *keyboard)
regval = inb(KBD_DATA);
if (regval != 0xAA) {
- printk(BIOS_ERR, "Keyboard reset selftest failed: 0x%x\n", regval);
+ printk(BIOS_ERR, "Keyboard reset selftest failed: 0x%x\n",
+ regval);
return;
}
@@ -265,20 +269,24 @@ void pc_keyboard_init(struct pc_keyboard *keyboard)
/* Set scancode command */
regval = send_keyboard(0xF0);
if (regval != KBD_REPLY_ACK) {
- printk(BIOS_ERR, "Keyboard set scancode cmd failed ACK: 0x%x\n", regval);
+ printk(BIOS_ERR, "Keyboard set scancode cmd failed ACK: 0x%x\n",
+ regval);
return;
}
/* Set scancode mode 2 */
regval = send_keyboard(0x02);
if (regval != KBD_REPLY_ACK) {
- printk(BIOS_ERR, "Keyboard set scancode mode failed ACK: 0x%x\n", regval);
+ printk(BIOS_ERR,
+ "Keyboard set scancode mode failed ACK: 0x%x\n", regval);
return;
}
/* All is well - enable keyboard interface */
- if (!kbc_input_buffer_empty()) return;
+ if (!kbc_input_buffer_empty())
+ return;
outb(0x60, KBD_COMMAND);
- if (!kbc_input_buffer_empty()) return;
+ if (!kbc_input_buffer_empty())
+ return;
outb(0x65, KBD_DATA); /* send cmd: enable keyboard and IRQ 1 */
if (!kbc_input_buffer_empty()) {
printk(BIOS_ERR, "Timeout during keyboard enable\n");
@@ -305,10 +313,12 @@ void set_kbc_ps2_mode(void)
return;
/* Support PS/2 mode */
- if (!kbc_input_buffer_empty()) return;
+ if (!kbc_input_buffer_empty())
+ return;
outb(0xcb, KBD_COMMAND);
- if (!kbc_input_buffer_empty()) return;
+ if (!kbc_input_buffer_empty())
+ return;
outb(0x01, KBD_DATA);
kbc_cleanup_buffers();
generated by cgit v1.2.3 (git 2.25.1) at 2024-11-23 20:33:04 +0000