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Revert "platform/chrome: cros_typec_switch: Add event check" 

This reverts commit bb53ad9580.

The chrome platform driver changes need to come in through the platform
tree due to some api changes that showed up there that cause build
errors in linux-next

Reported-by: Stephen Rothwell <sfr@canb.auug.org.au>
Link: https://lore.kernel.org/r/20220719160821.5e68e30b@oak.ozlabs.ibm.com
Cc: Prashant Malani <pmalani@chromium.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
Greg Kroah-Hartman 2022-07-19 13:56:53 +02:00
parent 3838896d37
commit e5b25ca94c
1 changed files with 2 additions and 70 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

72
drivers/platform/chrome/cros_typec_switch.c
View File

@ -7,8 +7,6 @@
*/
#include <linux/acpi.h>
#include <linux/delay.h>
#include <linux/jiffies.h>
#include <linux/module.h>
#include <linux/platform_data/cros_ec_commands.h>
#include <linux/platform_data/cros_ec_proto.h>
@ -65,40 +63,6 @@ static int cros_typec_get_mux_state(unsigned long mode, struct typec_altmode *al
return ret;
}
static int cros_typec_send_clear_event(struct cros_typec_switch_data *sdata, int port_num,
u32 events_mask)
{
struct ec_params_typec_control req = {
.port = port_num,
.command = TYPEC_CONTROL_COMMAND_CLEAR_EVENTS,
.clear_events_mask = events_mask,
};
return cros_ec_command(sdata->ec, 0, EC_CMD_TYPEC_CONTROL, &req,
sizeof(req), NULL, 0);
}
static bool cros_typec_check_event(struct cros_typec_switch_data *sdata, int port_num, u32 mask)
{
struct ec_response_typec_status resp;
struct ec_params_typec_status req = {
.port = port_num,
};
int ret;
ret = cros_ec_command(sdata->ec, 0, EC_CMD_TYPEC_STATUS, &req, sizeof(req),
&resp, sizeof(resp));
if (ret < 0) {
dev_warn(sdata->dev, "EC_CMD_TYPEC_STATUS failed for port: %d\n", port_num);
return false;
}
if (resp.events & mask)
return true;
return false;
}
/*
* The Chrome EC treats both mode-switches and retimers as "muxes" for the purposes of the
* host command API. This common function configures and verifies the retimer/mode-switch
@ -107,44 +71,12 @@ static bool cros_typec_check_event(struct cros_typec_switch_data *sdata, int por
static int cros_typec_configure_mux(struct cros_typec_switch_data *sdata, int port_num, int index,
unsigned long mode, struct typec_altmode *alt)
{
unsigned long end;
u32 event_mask;
u8 mux_state;
int ret;
int ret = cros_typec_get_mux_state(mode, alt);
ret = cros_typec_get_mux_state(mode, alt);
if (ret < 0)
return ret;
mux_state = (u8)ret;
/* Clear any old mux set done event. */
if (index == 0)
event_mask = PD_STATUS_EVENT_MUX_0_SET_DONE;
else
event_mask = PD_STATUS_EVENT_MUX_1_SET_DONE;
ret = cros_typec_send_clear_event(sdata, port_num, event_mask);
if (ret < 0)
return ret;
/* Send the set command. */
ret = cros_typec_cmd_mux_set(sdata, port_num, index, mux_state);
if (ret < 0)
return ret;
/* Check for the mux set done event. */
end = jiffies + msecs_to_jiffies(1000);
do {
if (cros_typec_check_event(sdata, port_num, event_mask))
return 0;
usleep_range(500, 1000);
} while (time_before(jiffies, end));
dev_err(sdata->dev, "Timed out waiting for mux set done on index: %d, state: %d\n",
index, mux_state);
return -ETIMEDOUT;
return cros_typec_cmd_mux_set(sdata, port_num, index, (u8)ret);
}
static int cros_typec_retimer_set(struct typec_retimer *retimer, struct typec_retimer_state *state)