platform/chrome: wilco_ec: Add debugfs test_event file
This change introduces a new debugfs file 'test_event' that when written to causes the EC to generate a test event. This adds a second sub cmd for the test event, and pulls out send_ec_cmd to be a common helper between h1_gpio_get and test_event_set. Signed-off-by: Daniel Campello <campello@chromium.org> Reviewed-by: Benson Leung <bleung@chromium.org> Reviewed-by: Nick Crews <ncrews@chromium.org> Signed-off-by: Enric Balletbo i Serra <enric.balletbo@collabora.com>
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54ecb8f702
Коммит
e6679fd1e2
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@ -160,29 +160,29 @@ static const struct file_operations fops_raw = {
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#define CMD_KB_CHROME 0x88
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#define SUB_CMD_H1_GPIO 0x0A
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#define SUB_CMD_TEST_EVENT 0x0B
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struct h1_gpio_status_request {
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struct ec_request {
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u8 cmd; /* Always CMD_KB_CHROME */
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u8 reserved;
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u8 sub_cmd; /* Always SUB_CMD_H1_GPIO */
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u8 sub_cmd;
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} __packed;
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struct hi_gpio_status_response {
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struct ec_response {
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u8 status; /* 0 if allowed */
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u8 val; /* BIT(0)=ENTRY_TO_FACT_MODE, BIT(1)=SPI_CHROME_SEL */
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u8 val;
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} __packed;
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static int h1_gpio_get(void *arg, u64 *val)
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static int send_ec_cmd(struct wilco_ec_device *ec, u8 sub_cmd, u8 *out_val)
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{
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struct wilco_ec_device *ec = arg;
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struct h1_gpio_status_request rq;
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struct hi_gpio_status_response rs;
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struct ec_request rq;
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struct ec_response rs;
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struct wilco_ec_message msg;
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int ret;
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memset(&rq, 0, sizeof(rq));
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rq.cmd = CMD_KB_CHROME;
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rq.sub_cmd = SUB_CMD_H1_GPIO;
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rq.sub_cmd = sub_cmd;
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memset(&msg, 0, sizeof(msg));
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msg.type = WILCO_EC_MSG_LEGACY;
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@ -196,13 +196,38 @@ static int h1_gpio_get(void *arg, u64 *val)
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if (rs.status)
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return -EIO;
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*val = rs.val;
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*out_val = rs.val;
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return 0;
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}
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/**
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* h1_gpio_get() - Gets h1 gpio status.
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* @arg: The wilco EC device.
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* @val: BIT(0)=ENTRY_TO_FACT_MODE, BIT(1)=SPI_CHROME_SEL
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*/
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static int h1_gpio_get(void *arg, u64 *val)
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{
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return send_ec_cmd(arg, SUB_CMD_H1_GPIO, (u8 *)val);
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}
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DEFINE_DEBUGFS_ATTRIBUTE(fops_h1_gpio, h1_gpio_get, NULL, "0x%02llx\n");
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/**
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* test_event_set() - Sends command to EC to cause an EC test event.
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* @arg: The wilco EC device.
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* @val: unused.
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*/
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static int test_event_set(void *arg, u64 val)
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{
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u8 ret;
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return send_ec_cmd(arg, SUB_CMD_TEST_EVENT, &ret);
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}
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/* Format is unused since it is only required for get method which is NULL */
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DEFINE_DEBUGFS_ATTRIBUTE(fops_test_event, NULL, test_event_set, "%llu\n");
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/**
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* wilco_ec_debugfs_probe() - Create the debugfs node
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* @pdev: The platform device, probably created in core.c
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@ -226,6 +251,8 @@ static int wilco_ec_debugfs_probe(struct platform_device *pdev)
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debugfs_create_file("raw", 0644, debug_info->dir, NULL, &fops_raw);
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debugfs_create_file("h1_gpio", 0444, debug_info->dir, ec,
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&fops_h1_gpio);
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debugfs_create_file("test_event", 0200, debug_info->dir, ec,
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&fops_test_event);
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return 0;
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}
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