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Diffstat (limited to 'src/ec/google/chromeec/ec.c')
-rw-r--r--src/ec/google/chromeec/ec.c186
1 files changed, 0 insertions, 186 deletions
diff --git a/src/ec/google/chromeec/ec.c b/src/ec/google/chromeec/ec.c
index 5ae0178ebf..d8305292c1 100644
--- a/src/ec/google/chromeec/ec.c
+++ b/src/ec/google/chromeec/ec.c
@@ -21,7 +21,6 @@
#include <console/console.h>
#include <arch/io.h>
#include <delay.h>
-#include <device/device.h>
#include <device/pnp.h>
#ifndef __PRE_RAM__
#include <elog.h>
@@ -35,172 +34,6 @@
#include "ec_commands.h"
#include <vendorcode/google/chromeos/chromeos.h>
-/* an internal API to send a command to the EC and wait for response. */
-struct chromeec_command {
- u8 cmd_code; /* command code in, status out */
- u8 cmd_version; /* command version */
- const void* cmd_data_in; /* command data, if any */
- void* cmd_data_out; /* command response, if any */
- u16 cmd_size_in; /* size of command data */
- u16 cmd_size_out; /* expected size of command response in,
- * actual received size out */
-};
-
-static int google_chromeec_wait_ready(u16 port)
-{
- u8 ec_status = inb(port);
- u32 time_count = 0;
-
- /*
- * One second is more than plenty for any EC operation to complete
- * (and the bus accessing/code execution) overhead will make the
- * timeout even longer.
- */
-#define MAX_EC_TIMEOUT_US 1000000
-
- while (ec_status &
- (EC_LPC_CMDR_PENDING | EC_LPC_CMDR_BUSY)) {
- udelay(1);
- if (time_count++ == MAX_EC_TIMEOUT_US)
- return -1;
- ec_status = inb(port);
- }
- return 0;
-}
-
-static int google_chromeec_cmd_args_supported(void)
-{
- if (inb(EC_LPC_ADDR_MEMMAP + EC_MEMMAP_ID) == 'E' &&
- inb(EC_LPC_ADDR_MEMMAP + EC_MEMMAP_ID + 1) == 'C' &&
- (inb(EC_LPC_ADDR_MEMMAP + EC_MEMMAP_HOST_CMD_FLAGS) &
- EC_HOST_CMD_FLAG_LPC_ARGS_SUPPORTED))
- return 1;
-
- return 0;
-}
-
-static int google_chromeec_command_old(struct chromeec_command *cec_command)
-{
- int i;
-
- if (cec_command->cmd_version) {
- printk(BIOS_ERR, "Invalid version for command protocol!\n");
- return 1;
- }
-
- if (google_chromeec_wait_ready(EC_LPC_ADDR_HOST_CMD)) {
- printk(BIOS_ERR, "Timeout waiting for EC ready!\n");
- return 1;
- }
-
- /* Copy command data, if any. */
- for (i = 0; i < cec_command->cmd_size_in; i++)
- outb(((char*)cec_command->cmd_data_in)[i],
- EC_LPC_ADDR_OLD_PARAM + i);
-
- /* Issue the command. */
- outb(cec_command->cmd_code, EC_LPC_ADDR_HOST_CMD);
-
- if (google_chromeec_wait_ready(EC_LPC_ADDR_HOST_CMD)) {
- printk(BIOS_ERR, "Timeout waiting for EC process command %d!\n",
- cec_command->cmd_code);
- return 1;
- }
-
- for (i = 0; i < cec_command->cmd_size_out; i++)
- ((char*)cec_command->cmd_data_out)[i] =
- inb(EC_LPC_ADDR_OLD_PARAM + i);
- cec_command->cmd_code = inb(EC_LPC_ADDR_HOST_DATA);
- return 0;
-}
-
-static int google_chromeec_command(struct chromeec_command *cec_command)
-{
- struct ec_lpc_host_args args;
- const u8 *d;
- u8 *dout;
- u8 cmd_code = cec_command->cmd_code;
- int csum;
- int i;
-
- /* Fall back to old command protocol if necessary */
- if (!google_chromeec_cmd_args_supported())
- return google_chromeec_command_old(cec_command);
-
- /* Fill in args */
- args.flags = EC_HOST_ARGS_FLAG_FROM_HOST;
- args.command_version = cec_command->cmd_version;
- args.data_size = cec_command->cmd_size_in;
-
- /* Initialize checksum */
- csum = cmd_code + args.flags + args.command_version + args.data_size;
-
- /* Write data and update checksum */
- for (i = 0, d = (const u8 *)cec_command->cmd_data_in;
- i < cec_command->cmd_size_in; i++, d++) {
- outb(*d, EC_LPC_ADDR_HOST_PARAM + i);
- csum += *d;
- }
-
- /* Finalize checksum and write args */
- args.checksum = (u8)csum;
- for (i = 0, d = (const u8 *)&args; i < sizeof(args); i++, d++)
- outb(*d, EC_LPC_ADDR_HOST_ARGS + i);
-
-
- /* Issue the command */
- outb(cmd_code, EC_LPC_ADDR_HOST_CMD);
-
- if (google_chromeec_wait_ready(EC_LPC_ADDR_HOST_CMD)) {
- printk(BIOS_ERR, "Timeout waiting for EC process command %d!\n",
- cec_command->cmd_code);
- return 1;
- }
-
- /* Check result */
- cec_command->cmd_code = inb(EC_LPC_ADDR_HOST_DATA);
- if (cec_command->cmd_code)
- return 1;
-
- /* Read back args */
- for (i = 0, dout = (u8 *)&args; i < sizeof(args); i++, dout++)
- *dout = inb(EC_LPC_ADDR_HOST_ARGS + i);
-
- /*
- * If EC didn't modify args flags, then somehow we sent a new-style
- * command to an old EC, which means it would have read its params
- * from the wrong place.
- */
- if (!(args.flags & EC_HOST_ARGS_FLAG_TO_HOST)) {
- printk(BIOS_ERR, "EC protocol mismatch\n");
- return 1;
- }
-
- if (args.data_size > cec_command->cmd_size_out) {
- printk(BIOS_ERR, "EC returned too much data\n");
- return 1;
- }
- cec_command->cmd_size_out = args.data_size;
-
- /* Start calculating response checksum */
- csum = cmd_code + args.flags + args.command_version + args.data_size;
-
- /* Read data, if any */
- for (i = 0, dout = (u8 *)cec_command->cmd_data_out;
- i < args.data_size; i++, dout++) {
- *dout = inb(EC_LPC_ADDR_HOST_PARAM + i);
- csum += *dout;
- }
-
- /* Verify checksum */
- if (args.checksum != (u8)csum) {
- printk(BIOS_ERR, "EC response has invalid checksum\n");
- return 1;
- }
-
- return 0;
-}
-
int google_chromeec_kbbacklight(int percent)
{
struct chromeec_command cec_cmd;
@@ -344,25 +177,6 @@ void google_chromeec_log_events(u32 mask)
#endif
}
-u8 google_chromeec_get_event(void)
-{
- if (google_chromeec_wait_ready(EC_LPC_ADDR_ACPI_CMD)) {
- printk(BIOS_ERR, "Timeout waiting for EC ready!\n");
- return 1;
- }
-
- /* Issue the ACPI query-event command */
- outb(EC_CMD_ACPI_QUERY_EVENT, EC_LPC_ADDR_ACPI_CMD);
-
- if (google_chromeec_wait_ready(EC_LPC_ADDR_ACPI_CMD)) {
- printk(BIOS_ERR, "Timeout waiting for EC QUERY_EVENT!\n");
- return 0;
- }
-
- /* Event (or 0 if none) is returned directly in the data byte */
- return inb(EC_LPC_ADDR_ACPI_DATA);
-}
-
u16 google_chromeec_get_board_version(void)
{
struct chromeec_command cmd;