* Released under the GPLv2 only.
*/
+#include <linux/debugfs.h>
+#include <linux/input.h>
#include <linux/workqueue.h>
#include "greybus.h"
-#define CPORT_FLAGS_E2EFC BIT(0)
-#define CPORT_FLAGS_CSD_N BIT(1)
-#define CPORT_FLAGS_CSV_N BIT(2)
+#define SVC_KEY_ARA_BUTTON KEY_A
+#define SVC_INTF_EJECT_TIMEOUT 9000
+#define SVC_INTF_ACTIVATE_TIMEOUT 6000
struct gb_svc_deferred_request {
struct work_struct work;
};
+static int gb_svc_queue_deferred_request(struct gb_operation *operation);
+
static ssize_t endo_id_show(struct device *dev,
struct device_attribute *attr, char *buf)
{
}
static DEVICE_ATTR_RO(ap_intf_id);
+
+// FIXME
+// This is a hack, we need to do this "right" and clean the interface up
+// properly, not just forcibly yank the thing out of the system and hope for the
+// best. But for now, people want their modules to come out without having to
+// throw the thing to the ground or get out a screwdriver.
+static ssize_t intf_eject_store(struct device *dev,
+ struct device_attribute *attr, const char *buf,
+ size_t len)
+{
+ struct gb_svc *svc = to_gb_svc(dev);
+ unsigned short intf_id;
+ int ret;
+
+ ret = kstrtou16(buf, 10, &intf_id);
+ if (ret < 0)
+ return ret;
+
+ dev_warn(dev, "Forcibly trying to eject interface %d\n", intf_id);
+
+ ret = gb_svc_intf_eject(svc, intf_id);
+ if (ret < 0)
+ return ret;
+
+ return len;
+}
+static DEVICE_ATTR_WO(intf_eject);
+
+static ssize_t watchdog_show(struct device *dev, struct device_attribute *attr,
+ char *buf)
+{
+ struct gb_svc *svc = to_gb_svc(dev);
+
+ return sprintf(buf, "%s\n",
+ gb_svc_watchdog_enabled(svc) ? "enabled" : "disabled");
+}
+
+static ssize_t watchdog_store(struct device *dev,
+ struct device_attribute *attr, const char *buf,
+ size_t len)
+{
+ struct gb_svc *svc = to_gb_svc(dev);
+ int retval;
+ bool user_request;
+
+ retval = strtobool(buf, &user_request);
+ if (retval)
+ return retval;
+
+ if (user_request)
+ retval = gb_svc_watchdog_enable(svc);
+ else
+ retval = gb_svc_watchdog_disable(svc);
+ if (retval)
+ return retval;
+ return len;
+}
+static DEVICE_ATTR_RW(watchdog);
+
+static int gb_svc_pwrmon_rail_count_get(struct gb_svc *svc, u8 *value)
+{
+ struct gb_svc_pwrmon_rail_count_get_response response;
+ int ret;
+
+ ret = gb_operation_sync(svc->connection,
+ GB_SVC_TYPE_PWRMON_RAIL_COUNT_GET, NULL, 0,
+ &response, sizeof(response));
+ if (ret) {
+ dev_err(&svc->dev, "failed to get rail count: %d\n", ret);
+ return ret;
+ }
+
+ *value = response.rail_count;
+
+ return 0;
+}
+
+static int gb_svc_pwrmon_rail_names_get(struct gb_svc *svc,
+ struct gb_svc_pwrmon_rail_names_get_response *response,
+ size_t bufsize)
+{
+ int ret;
+
+ ret = gb_operation_sync(svc->connection,
+ GB_SVC_TYPE_PWRMON_RAIL_NAMES_GET, NULL, 0,
+ response, bufsize);
+ if (ret) {
+ dev_err(&svc->dev, "failed to get rail names: %d\n", ret);
+ return ret;
+ }
+
+ return 0;
+}
+
+static int gb_svc_pwrmon_sample_get(struct gb_svc *svc, u8 rail_id,
+ u8 measurement_type, u32 *value)
+{
+ struct gb_svc_pwrmon_sample_get_request request;
+ struct gb_svc_pwrmon_sample_get_response response;
+ int ret;
+
+ request.rail_id = rail_id;
+ request.measurement_type = measurement_type;
+
+ ret = gb_operation_sync(svc->connection, GB_SVC_TYPE_PWRMON_SAMPLE_GET,
+ &request, sizeof(request),
+ &response, sizeof(response));
+ if (ret) {
+ dev_err(&svc->dev, "failed to get rail sample: %d\n", ret);
+ return ret;
+ }
+
+ if (response.result) {
+ dev_err(&svc->dev,
+ "UniPro error while getting rail power sample (%d %d): %d\n",
+ rail_id, measurement_type, response.result);
+ switch (response.result) {
+ case GB_SVC_PWRMON_GET_SAMPLE_INVAL:
+ return -EINVAL;
+ case GB_SVC_PWRMON_GET_SAMPLE_NOSUPP:
+ return -ENOMSG;
+ default:
+ return -EREMOTEIO;
+ }
+ }
+
+ *value = le32_to_cpu(response.measurement);
+
+ return 0;
+}
+
+int gb_svc_pwrmon_intf_sample_get(struct gb_svc *svc, u8 intf_id,
+ u8 measurement_type, u32 *value)
+{
+ struct gb_svc_pwrmon_intf_sample_get_request request;
+ struct gb_svc_pwrmon_intf_sample_get_response response;
+ int ret;
+
+ request.intf_id = intf_id;
+ request.measurement_type = measurement_type;
+
+ ret = gb_operation_sync(svc->connection,
+ GB_SVC_TYPE_PWRMON_INTF_SAMPLE_GET,
+ &request, sizeof(request),
+ &response, sizeof(response));
+ if (ret) {
+ dev_err(&svc->dev, "failed to get intf sample: %d\n", ret);
+ return ret;
+ }
+
+ if (response.result) {
+ dev_err(&svc->dev,
+ "UniPro error while getting intf power sample (%d %d): %d\n",
+ intf_id, measurement_type, response.result);
+ switch (response.result) {
+ case GB_SVC_PWRMON_GET_SAMPLE_INVAL:
+ return -EINVAL;
+ case GB_SVC_PWRMON_GET_SAMPLE_NOSUPP:
+ return -ENOMSG;
+ default:
+ return -EREMOTEIO;
+ }
+ }
+
+ *value = le32_to_cpu(response.measurement);
+
+ return 0;
+}
+
static struct attribute *svc_attrs[] = {
&dev_attr_endo_id.attr,
&dev_attr_ap_intf_id.attr,
+ &dev_attr_intf_eject.attr,
+ &dev_attr_watchdog.attr,
NULL,
};
ATTRIBUTE_GROUPS(svc);
-static int gb_svc_intf_device_id(struct gb_svc *svc, u8 intf_id, u8 device_id)
+int gb_svc_intf_device_id(struct gb_svc *svc, u8 intf_id, u8 device_id)
{
struct gb_svc_intf_device_id_request request;
&request, sizeof(request), NULL, 0);
}
-int gb_svc_intf_reset(struct gb_svc *svc, u8 intf_id)
+int gb_svc_intf_eject(struct gb_svc *svc, u8 intf_id)
{
- struct gb_svc_intf_reset_request request;
+ struct gb_svc_intf_eject_request request;
+ int ret;
request.intf_id = intf_id;
- return gb_operation_sync(svc->connection, GB_SVC_TYPE_INTF_RESET,
- &request, sizeof(request), NULL, 0);
+ /*
+ * The pulse width for module release in svc is long so we need to
+ * increase the timeout so the operation will not return to soon.
+ */
+ ret = gb_operation_sync_timeout(svc->connection,
+ GB_SVC_TYPE_INTF_EJECT, &request,
+ sizeof(request), NULL, 0,
+ SVC_INTF_EJECT_TIMEOUT);
+ if (ret) {
+ dev_err(&svc->dev, "failed to eject interface %u\n", intf_id);
+ return ret;
+ }
+
+ return 0;
+}
+
+int gb_svc_intf_vsys_set(struct gb_svc *svc, u8 intf_id, bool enable)
+{
+ struct gb_svc_intf_vsys_request request;
+ struct gb_svc_intf_vsys_response response;
+ int type, ret;
+
+ request.intf_id = intf_id;
+
+ if (enable)
+ type = GB_SVC_TYPE_INTF_VSYS_ENABLE;
+ else
+ type = GB_SVC_TYPE_INTF_VSYS_DISABLE;
+
+ ret = gb_operation_sync(svc->connection, type,
+ &request, sizeof(request),
+ &response, sizeof(response));
+ if (ret < 0)
+ return ret;
+ if (response.result_code != GB_SVC_INTF_VSYS_OK)
+ return -EREMOTEIO;
+ return 0;
+}
+
+int gb_svc_intf_refclk_set(struct gb_svc *svc, u8 intf_id, bool enable)
+{
+ struct gb_svc_intf_refclk_request request;
+ struct gb_svc_intf_refclk_response response;
+ int type, ret;
+
+ request.intf_id = intf_id;
+
+ if (enable)
+ type = GB_SVC_TYPE_INTF_REFCLK_ENABLE;
+ else
+ type = GB_SVC_TYPE_INTF_REFCLK_DISABLE;
+
+ ret = gb_operation_sync(svc->connection, type,
+ &request, sizeof(request),
+ &response, sizeof(response));
+ if (ret < 0)
+ return ret;
+ if (response.result_code != GB_SVC_INTF_REFCLK_OK)
+ return -EREMOTEIO;
+ return 0;
+}
+
+int gb_svc_intf_unipro_set(struct gb_svc *svc, u8 intf_id, bool enable)
+{
+ struct gb_svc_intf_unipro_request request;
+ struct gb_svc_intf_unipro_response response;
+ int type, ret;
+
+ request.intf_id = intf_id;
+
+ if (enable)
+ type = GB_SVC_TYPE_INTF_UNIPRO_ENABLE;
+ else
+ type = GB_SVC_TYPE_INTF_UNIPRO_DISABLE;
+
+ ret = gb_operation_sync(svc->connection, type,
+ &request, sizeof(request),
+ &response, sizeof(response));
+ if (ret < 0)
+ return ret;
+ if (response.result_code != GB_SVC_INTF_UNIPRO_OK)
+ return -EREMOTEIO;
+ return 0;
+}
+
+int gb_svc_intf_activate(struct gb_svc *svc, u8 intf_id, u8 *intf_type)
+{
+ struct gb_svc_intf_activate_request request;
+ struct gb_svc_intf_activate_response response;
+ int ret;
+
+ request.intf_id = intf_id;
+
+ ret = gb_operation_sync_timeout(svc->connection,
+ GB_SVC_TYPE_INTF_ACTIVATE,
+ &request, sizeof(request),
+ &response, sizeof(response),
+ SVC_INTF_ACTIVATE_TIMEOUT);
+ if (ret < 0)
+ return ret;
+ if (response.status != GB_SVC_OP_SUCCESS) {
+ dev_err(&svc->dev, "failed to activate interface %u: %u\n",
+ intf_id, response.status);
+ return -EREMOTEIO;
+ }
+
+ *intf_type = response.intf_type;
+
+ return 0;
}
-EXPORT_SYMBOL_GPL(gb_svc_intf_reset);
int gb_svc_dme_peer_get(struct gb_svc *svc, u8 intf_id, u16 attr, u16 selector,
u32 *value)
&request, sizeof(request),
&response, sizeof(response));
if (ret) {
- dev_err(&svc->dev, "failed to get DME attribute (%hhu %hx %hu): %d\n",
+ dev_err(&svc->dev, "failed to get DME attribute (%u 0x%04x %u): %d\n",
intf_id, attr, selector, ret);
return ret;
}
result = le16_to_cpu(response.result_code);
if (result) {
- dev_err(&svc->dev, "UniPro error while getting DME attribute (%hhu %hx %hu): %hu\n",
+ dev_err(&svc->dev, "UniPro error while getting DME attribute (%u 0x%04x %u): %u\n",
intf_id, attr, selector, result);
- return -EINVAL;
+ return -EREMOTEIO;
}
if (value)
&request, sizeof(request),
&response, sizeof(response));
if (ret) {
- dev_err(&svc->dev, "failed to set DME attribute (%hhu %hx %hu %u): %d\n",
+ dev_err(&svc->dev, "failed to set DME attribute (%u 0x%04x %u %u): %d\n",
intf_id, attr, selector, value, ret);
return ret;
}
result = le16_to_cpu(response.result_code);
if (result) {
- dev_err(&svc->dev, "UniPro error while setting DME attribute (%hhu %hx %hu %u): %hu\n",
+ dev_err(&svc->dev, "UniPro error while setting DME attribute (%u 0x%04x %u %u): %u\n",
intf_id, attr, selector, value, result);
- return -EINVAL;
+ return -EREMOTEIO;
}
return 0;
}
EXPORT_SYMBOL_GPL(gb_svc_dme_peer_set);
-/*
- * T_TstSrcIncrement is written by the module on ES2 as a stand-in for boot
- * status attribute. AP needs to read and clear it, after reading a non-zero
- * value from it.
- *
- * FIXME: This is module-hardware dependent and needs to be extended for every
- * type of module we want to support.
- */
-static int gb_svc_read_and_clear_module_boot_status(struct gb_interface *intf)
-{
- struct gb_host_device *hd = intf->hd;
- int ret;
- u32 value;
-
- /* Read and clear boot status in T_TstSrcIncrement */
- ret = gb_svc_dme_peer_get(hd->svc, intf->interface_id,
- DME_ATTR_T_TST_SRC_INCREMENT,
- DME_ATTR_SELECTOR_INDEX, &value);
-
- if (ret)
- return ret;
-
- /*
- * A nonzero boot status indicates the module has finished
- * booting. Clear it.
- */
- if (!value) {
- dev_err(&intf->dev, "Module not ready yet\n");
- return -ENODEV;
- }
-
- /*
- * Check if the module needs to boot from unipro.
- * For ES2: We need to check lowest 8 bits of 'value'.
- * For ES3: We need to check highest 8 bits out of 32 of 'value'.
- *
- * FIXME: Add code to find if we are on ES2 or ES3 to have separate
- * checks.
- */
- if (value == DME_TSI_UNIPRO_BOOT_STARTED ||
- value == DME_TSI_FALLBACK_UNIPRO_BOOT_STARTED)
- intf->boot_over_unipro = true;
-
- return gb_svc_dme_peer_set(hd->svc, intf->interface_id,
- DME_ATTR_T_TST_SRC_INCREMENT,
- DME_ATTR_SELECTOR_INDEX, 0);
-}
-
int gb_svc_connection_create(struct gb_svc *svc,
u8 intf1_id, u16 cport1_id,
u8 intf2_id, u16 cport2_id,
- bool boot_over_unipro)
+ u8 cport_flags)
{
struct gb_svc_conn_create_request request;
request.cport1_id = cpu_to_le16(cport1_id);
request.intf2_id = intf2_id;
request.cport2_id = cpu_to_le16(cport2_id);
- /*
- * XXX: fix connections paramaters to TC0 and all CPort flags
- * for now.
- */
- request.tc = 0;
-
- /*
- * We need to skip setting E2EFC and other flags to the connection
- * create request, for all cports, on an interface that need to boot
- * over unipro, i.e. interfaces required to download firmware.
- */
- if (boot_over_unipro)
- request.flags = CPORT_FLAGS_CSV_N | CPORT_FLAGS_CSD_N;
- else
- request.flags = CPORT_FLAGS_CSV_N | CPORT_FLAGS_E2EFC;
+ request.tc = 0; /* TC0 */
+ request.flags = cport_flags;
return gb_operation_sync(svc->connection, GB_SVC_TYPE_CONN_CREATE,
&request, sizeof(request), NULL, 0);
}
EXPORT_SYMBOL_GPL(gb_svc_connection_create);
+void gb_svc_connection_quiescing(struct gb_svc *svc, u8 intf1_id, u16 cport1_id,
+ u8 intf2_id, u16 cport2_id)
+{
+ /* FIXME: implement */
+
+ dev_dbg(&svc->dev, "%s - (%u:%u %u:%u)\n", __func__,
+ intf1_id, cport1_id, intf2_id, cport2_id);
+}
+EXPORT_SYMBOL_GPL(gb_svc_connection_quiescing);
+
void gb_svc_connection_destroy(struct gb_svc *svc, u8 intf1_id, u16 cport1_id,
u8 intf2_id, u16 cport2_id)
{
ret = gb_operation_sync(connection, GB_SVC_TYPE_CONN_DESTROY,
&request, sizeof(request), NULL, 0);
if (ret) {
- dev_err(&svc->dev, "failed to destroy connection (%hhu:%hu %hhu:%hu): %d\n",
+ dev_err(&svc->dev, "failed to destroy connection (%u:%u %u:%u): %d\n",
intf1_id, cport1_id, intf2_id, cport2_id, ret);
}
}
EXPORT_SYMBOL_GPL(gb_svc_connection_destroy);
+int gb_svc_timesync_enable(struct gb_svc *svc, u8 count, u64 frame_time,
+ u32 strobe_delay, u32 refclk)
+{
+ struct gb_connection *connection = svc->connection;
+ struct gb_svc_timesync_enable_request request;
+
+ request.count = count;
+ request.frame_time = cpu_to_le64(frame_time);
+ request.strobe_delay = cpu_to_le32(strobe_delay);
+ request.refclk = cpu_to_le32(refclk);
+ return gb_operation_sync(connection,
+ GB_SVC_TYPE_TIMESYNC_ENABLE,
+ &request, sizeof(request), NULL, 0);
+}
+EXPORT_SYMBOL_GPL(gb_svc_timesync_enable);
+
+int gb_svc_timesync_disable(struct gb_svc *svc)
+{
+ struct gb_connection *connection = svc->connection;
+
+ return gb_operation_sync(connection,
+ GB_SVC_TYPE_TIMESYNC_DISABLE,
+ NULL, 0, NULL, 0);
+}
+EXPORT_SYMBOL_GPL(gb_svc_timesync_disable);
+
+int gb_svc_timesync_authoritative(struct gb_svc *svc, u64 *frame_time)
+{
+ struct gb_connection *connection = svc->connection;
+ struct gb_svc_timesync_authoritative_response response;
+ int ret, i;
+
+ ret = gb_operation_sync(connection,
+ GB_SVC_TYPE_TIMESYNC_AUTHORITATIVE, NULL, 0,
+ &response, sizeof(response));
+ if (ret < 0)
+ return ret;
+
+ for (i = 0; i < GB_TIMESYNC_MAX_STROBES; i++)
+ frame_time[i] = le64_to_cpu(response.frame_time[i]);
+ return 0;
+}
+EXPORT_SYMBOL_GPL(gb_svc_timesync_authoritative);
+
+int gb_svc_timesync_ping(struct gb_svc *svc, u64 *frame_time)
+{
+ struct gb_connection *connection = svc->connection;
+ struct gb_svc_timesync_ping_response response;
+ int ret;
+
+ ret = gb_operation_sync(connection,
+ GB_SVC_TYPE_TIMESYNC_PING,
+ NULL, 0,
+ &response, sizeof(response));
+ if (ret < 0)
+ return ret;
+
+ *frame_time = le64_to_cpu(response.frame_time);
+ return 0;
+}
+EXPORT_SYMBOL_GPL(gb_svc_timesync_ping);
+
+int gb_svc_timesync_wake_pins_acquire(struct gb_svc *svc, u32 strobe_mask)
+{
+ struct gb_connection *connection = svc->connection;
+ struct gb_svc_timesync_wake_pins_acquire_request request;
+
+ request.strobe_mask = cpu_to_le32(strobe_mask);
+ return gb_operation_sync(connection,
+ GB_SVC_TYPE_TIMESYNC_WAKE_PINS_ACQUIRE,
+ &request, sizeof(request),
+ NULL, 0);
+}
+EXPORT_SYMBOL_GPL(gb_svc_timesync_wake_pins_acquire);
+
+int gb_svc_timesync_wake_pins_release(struct gb_svc *svc)
+{
+ struct gb_connection *connection = svc->connection;
+
+ return gb_operation_sync(connection,
+ GB_SVC_TYPE_TIMESYNC_WAKE_PINS_RELEASE,
+ NULL, 0, NULL, 0);
+}
+EXPORT_SYMBOL_GPL(gb_svc_timesync_wake_pins_release);
+
/* Creates bi-directional routes between the devices */
-static int gb_svc_route_create(struct gb_svc *svc, u8 intf1_id, u8 dev1_id,
+int gb_svc_route_create(struct gb_svc *svc, u8 intf1_id, u8 dev1_id,
u8 intf2_id, u8 dev2_id)
{
struct gb_svc_route_create_request request;
}
/* Destroys bi-directional routes between the devices */
-static void gb_svc_route_destroy(struct gb_svc *svc, u8 intf1_id, u8 intf2_id)
+void gb_svc_route_destroy(struct gb_svc *svc, u8 intf1_id, u8 intf2_id)
{
struct gb_svc_route_destroy_request request;
int ret;
ret = gb_operation_sync(svc->connection, GB_SVC_TYPE_ROUTE_DESTROY,
&request, sizeof(request), NULL, 0);
if (ret) {
- dev_err(&svc->dev, "failed to destroy route (%hhu %hhu): %d\n",
+ dev_err(&svc->dev, "failed to destroy route (%u %u): %d\n",
intf1_id, intf2_id, ret);
}
}
+int gb_svc_intf_set_power_mode(struct gb_svc *svc, u8 intf_id, u8 hs_series,
+ u8 tx_mode, u8 tx_gear, u8 tx_nlanes,
+ u8 rx_mode, u8 rx_gear, u8 rx_nlanes,
+ u8 flags, u32 quirks)
+{
+ struct gb_svc_intf_set_pwrm_request request;
+ struct gb_svc_intf_set_pwrm_response response;
+ int ret;
+
+ request.intf_id = intf_id;
+ request.hs_series = hs_series;
+ request.tx_mode = tx_mode;
+ request.tx_gear = tx_gear;
+ request.tx_nlanes = tx_nlanes;
+ request.rx_mode = rx_mode;
+ request.rx_gear = rx_gear;
+ request.rx_nlanes = rx_nlanes;
+ request.flags = flags;
+ request.quirks = cpu_to_le32(quirks);
+
+ ret = gb_operation_sync(svc->connection, GB_SVC_TYPE_INTF_SET_PWRM,
+ &request, sizeof(request),
+ &response, sizeof(response));
+ if (ret < 0)
+ return ret;
+
+ return le16_to_cpu(response.result_code);
+}
+EXPORT_SYMBOL_GPL(gb_svc_intf_set_power_mode);
+
+int gb_svc_ping(struct gb_svc *svc)
+{
+ return gb_operation_sync_timeout(svc->connection, GB_SVC_TYPE_PING,
+ NULL, 0, NULL, 0,
+ GB_OPERATION_TIMEOUT_DEFAULT * 2);
+}
+EXPORT_SYMBOL_GPL(gb_svc_ping);
+
static int gb_svc_version_request(struct gb_operation *op)
{
struct gb_connection *connection = op->connection;
- struct gb_svc *svc = connection->private;
- struct gb_protocol_version_request *request;
- struct gb_protocol_version_response *response;
+ struct gb_svc *svc = gb_connection_get_data(connection);
+ struct gb_svc_version_request *request;
+ struct gb_svc_version_response *response;
if (op->request->payload_size < sizeof(*request)) {
dev_err(&svc->dev, "short version request (%zu < %zu)\n",
request = op->request->payload;
if (request->major > GB_SVC_VERSION_MAJOR) {
- dev_warn(&svc->dev, "unsupported major version (%hhu > %hhu)\n",
+ dev_warn(&svc->dev, "unsupported major version (%u > %u)\n",
request->major, GB_SVC_VERSION_MAJOR);
return -ENOTSUPP;
}
- connection->module_major = request->major;
- connection->module_minor = request->minor;
+ svc->protocol_major = request->major;
+ svc->protocol_minor = request->minor;
if (!gb_operation_response_alloc(op, sizeof(*response), GFP_KERNEL))
return -ENOMEM;
response = op->response->payload;
- response->major = connection->module_major;
- response->minor = connection->module_minor;
+ response->major = svc->protocol_major;
+ response->minor = svc->protocol_minor;
return 0;
}
+static ssize_t pwr_debugfs_voltage_read(struct file *file, char __user *buf,
+ size_t len, loff_t *offset)
+{
+ struct svc_debugfs_pwrmon_rail *pwrmon_rails = file->f_inode->i_private;
+ struct gb_svc *svc = pwrmon_rails->svc;
+ int ret, desc;
+ u32 value;
+ char buff[16];
+
+ ret = gb_svc_pwrmon_sample_get(svc, pwrmon_rails->id,
+ GB_SVC_PWRMON_TYPE_VOL, &value);
+ if (ret) {
+ dev_err(&svc->dev,
+ "failed to get voltage sample %u: %d\n",
+ pwrmon_rails->id, ret);
+ return ret;
+ }
+
+ desc = scnprintf(buff, sizeof(buff), "%u\n", value);
+
+ return simple_read_from_buffer(buf, len, offset, buff, desc);
+}
+
+static ssize_t pwr_debugfs_current_read(struct file *file, char __user *buf,
+ size_t len, loff_t *offset)
+{
+ struct svc_debugfs_pwrmon_rail *pwrmon_rails = file->f_inode->i_private;
+ struct gb_svc *svc = pwrmon_rails->svc;
+ int ret, desc;
+ u32 value;
+ char buff[16];
+
+ ret = gb_svc_pwrmon_sample_get(svc, pwrmon_rails->id,
+ GB_SVC_PWRMON_TYPE_CURR, &value);
+ if (ret) {
+ dev_err(&svc->dev,
+ "failed to get current sample %u: %d\n",
+ pwrmon_rails->id, ret);
+ return ret;
+ }
+
+ desc = scnprintf(buff, sizeof(buff), "%u\n", value);
+
+ return simple_read_from_buffer(buf, len, offset, buff, desc);
+}
+
+static ssize_t pwr_debugfs_power_read(struct file *file, char __user *buf,
+ size_t len, loff_t *offset)
+{
+ struct svc_debugfs_pwrmon_rail *pwrmon_rails = file->f_inode->i_private;
+ struct gb_svc *svc = pwrmon_rails->svc;
+ int ret, desc;
+ u32 value;
+ char buff[16];
+
+ ret = gb_svc_pwrmon_sample_get(svc, pwrmon_rails->id,
+ GB_SVC_PWRMON_TYPE_PWR, &value);
+ if (ret) {
+ dev_err(&svc->dev, "failed to get power sample %u: %d\n",
+ pwrmon_rails->id, ret);
+ return ret;
+ }
+
+ desc = scnprintf(buff, sizeof(buff), "%u\n", value);
+
+ return simple_read_from_buffer(buf, len, offset, buff, desc);
+}
+
+static const struct file_operations pwrmon_debugfs_voltage_fops = {
+ .read = pwr_debugfs_voltage_read,
+};
+
+static const struct file_operations pwrmon_debugfs_current_fops = {
+ .read = pwr_debugfs_current_read,
+};
+
+static const struct file_operations pwrmon_debugfs_power_fops = {
+ .read = pwr_debugfs_power_read,
+};
+
+static void gb_svc_pwrmon_debugfs_init(struct gb_svc *svc)
+{
+ int i;
+ size_t bufsize;
+ struct dentry *dent;
+ struct gb_svc_pwrmon_rail_names_get_response *rail_names;
+ u8 rail_count;
+
+ dent = debugfs_create_dir("pwrmon", svc->debugfs_dentry);
+ if (IS_ERR_OR_NULL(dent))
+ return;
+
+ if (gb_svc_pwrmon_rail_count_get(svc, &rail_count))
+ goto err_pwrmon_debugfs;
+
+ if (!rail_count || rail_count > GB_SVC_PWRMON_MAX_RAIL_COUNT)
+ goto err_pwrmon_debugfs;
+
+ bufsize = GB_SVC_PWRMON_RAIL_NAME_BUFSIZE * rail_count;
+
+ rail_names = kzalloc(bufsize, GFP_KERNEL);
+ if (!rail_names)
+ goto err_pwrmon_debugfs;
+
+ svc->pwrmon_rails = kcalloc(rail_count, sizeof(*svc->pwrmon_rails),
+ GFP_KERNEL);
+ if (!svc->pwrmon_rails)
+ goto err_pwrmon_debugfs_free;
+
+ if (gb_svc_pwrmon_rail_names_get(svc, rail_names, bufsize))
+ goto err_pwrmon_debugfs_free;
+
+ for (i = 0; i < rail_count; i++) {
+ struct dentry *dir;
+ struct svc_debugfs_pwrmon_rail *rail = &svc->pwrmon_rails[i];
+ char fname[GB_SVC_PWRMON_RAIL_NAME_BUFSIZE];
+
+ snprintf(fname, sizeof(fname), "%s",
+ (char *)&rail_names->name[i]);
+
+ rail->id = i;
+ rail->svc = svc;
+
+ dir = debugfs_create_dir(fname, dent);
+ debugfs_create_file("voltage_now", S_IRUGO, dir, rail,
+ &pwrmon_debugfs_voltage_fops);
+ debugfs_create_file("current_now", S_IRUGO, dir, rail,
+ &pwrmon_debugfs_current_fops);
+ debugfs_create_file("power_now", S_IRUGO, dir, rail,
+ &pwrmon_debugfs_power_fops);
+ }
+
+ kfree(rail_names);
+ return;
+
+err_pwrmon_debugfs_free:
+ kfree(rail_names);
+ kfree(svc->pwrmon_rails);
+ svc->pwrmon_rails = NULL;
+
+err_pwrmon_debugfs:
+ debugfs_remove(dent);
+}
+
+static void gb_svc_debugfs_init(struct gb_svc *svc)
+{
+ svc->debugfs_dentry = debugfs_create_dir(dev_name(&svc->dev),
+ gb_debugfs_get());
+ gb_svc_pwrmon_debugfs_init(svc);
+}
+
+static void gb_svc_debugfs_exit(struct gb_svc *svc)
+{
+ debugfs_remove_recursive(svc->debugfs_dentry);
+ kfree(svc->pwrmon_rails);
+ svc->pwrmon_rails = NULL;
+}
+
static int gb_svc_hello(struct gb_operation *op)
{
struct gb_connection *connection = op->connection;
- struct gb_svc *svc = connection->private;
+ struct gb_svc *svc = gb_connection_get_data(connection);
struct gb_svc_hello_request *hello_request;
int ret;
return ret;
}
- return 0;
+ ret = input_register_device(svc->input);
+ if (ret) {
+ dev_err(&svc->dev, "failed to register input: %d\n", ret);
+ device_del(&svc->dev);
+ return ret;
+ }
+
+ ret = gb_svc_watchdog_create(svc);
+ if (ret) {
+ dev_err(&svc->dev, "failed to create watchdog: %d\n", ret);
+ input_unregister_device(svc->input);
+ device_del(&svc->dev);
+ return ret;
+ }
+
+ gb_svc_debugfs_init(svc);
+
+ return gb_svc_queue_deferred_request(op);
}
-static void gb_svc_intf_remove(struct gb_svc *svc, struct gb_interface *intf)
+static struct gb_interface *gb_svc_interface_lookup(struct gb_svc *svc,
+ u8 intf_id)
{
- u8 intf_id = intf->interface_id;
- u8 device_id;
+ struct gb_host_device *hd = svc->hd;
+ struct gb_module *module;
+ size_t num_interfaces;
+ u8 module_id;
+
+ list_for_each_entry(module, &hd->modules, hd_node) {
+ module_id = module->module_id;
+ num_interfaces = module->num_interfaces;
+
+ if (intf_id >= module_id &&
+ intf_id < module_id + num_interfaces) {
+ return module->interfaces[intf_id - module_id];
+ }
+ }
+
+ return NULL;
+}
- device_id = intf->device_id;
- gb_interface_remove(intf);
+static struct gb_module *gb_svc_module_lookup(struct gb_svc *svc, u8 module_id)
+{
+ struct gb_host_device *hd = svc->hd;
+ struct gb_module *module;
+
+ list_for_each_entry(module, &hd->modules, hd_node) {
+ if (module->module_id == module_id)
+ return module;
+ }
+
+ return NULL;
+}
+
+static void gb_svc_process_hello_deferred(struct gb_operation *operation)
+{
+ struct gb_connection *connection = operation->connection;
+ struct gb_svc *svc = gb_connection_get_data(connection);
+ int ret;
/*
- * Destroy the two-way route between the AP and the interface.
+ * XXX This is a hack/work-around to reconfigure the APBridgeA-Switch
+ * link to PWM G2, 1 Lane, Slow Auto, so that it has sufficient
+ * bandwidth for 3 audio streams plus boot-over-UniPro of a hot-plugged
+ * module.
+ *
+ * The code should be removed once SW-2217, Heuristic for UniPro
+ * Power Mode Changes is resolved.
*/
- gb_svc_route_destroy(svc, svc->ap_intf_id, intf_id);
+ ret = gb_svc_intf_set_power_mode(svc, svc->ap_intf_id,
+ GB_SVC_UNIPRO_HS_SERIES_A,
+ GB_SVC_UNIPRO_SLOW_AUTO_MODE,
+ 2, 1,
+ GB_SVC_UNIPRO_SLOW_AUTO_MODE,
+ 2, 1,
+ 0, 0);
- ida_simple_remove(&svc->device_id_map, device_id);
+ if (ret)
+ dev_warn(&svc->dev,
+ "power mode change failed on AP to switch link: %d\n",
+ ret);
}
static void gb_svc_process_intf_hotplug(struct gb_operation *operation)
{
struct gb_svc_intf_hotplug_request *request;
struct gb_connection *connection = operation->connection;
- struct gb_svc *svc = connection->private;
+ struct gb_svc *svc = gb_connection_get_data(connection);
struct gb_host_device *hd = connection->hd;
- struct gb_interface *intf;
- u8 intf_id, device_id;
+ struct gb_module *module;
+ u8 intf_id;
int ret;
/* The request message size has already been verified. */
dev_dbg(&svc->dev, "%s - id = %u\n", __func__, intf_id);
- intf = gb_interface_find(hd, intf_id);
- if (intf) {
- /*
- * We have received a hotplug request for an interface that
- * already exists.
- *
- * This can happen in cases like:
- * - bootrom loading the firmware image and booting into that,
- * which only generates a hotplug event. i.e. no hot-unplug
- * event.
- * - Or the firmware on the module crashed and sent hotplug
- * request again to the SVC, which got propagated to AP.
- *
- * Remove the interface and add it again, and let user know
- * about this with a print message.
- */
- dev_info(&svc->dev, "removing interface %hhu to add it again\n",
- intf_id);
- gb_svc_intf_remove(svc, intf);
+ /* All modules are considered 1x2 for now */
+ module = gb_svc_module_lookup(svc, intf_id);
+ if (module) {
+ /* legacy mode switch */
+ return gb_interface_mailbox_event(module->interfaces[0], 0,
+ GB_SVC_INTF_MAILBOX_GREYBUS);
}
- intf = gb_interface_create(hd, intf_id);
- if (!intf) {
- dev_err(&svc->dev, "failed to create interface %hhu\n",
+ module = gb_module_create(hd, intf_id, 1);
+ if (!module) {
+ dev_err(&svc->dev, "failed to create module\n");
+ return;
+ }
+
+ ret = gb_module_add(module);
+ if (ret) {
+ gb_module_put(module);
+ return;
+ }
+
+ list_add(&module->hd_node, &hd->modules);
+}
+
+static void gb_svc_process_intf_hot_unplug(struct gb_operation *operation)
+{
+ struct gb_svc *svc = gb_connection_get_data(operation->connection);
+ struct gb_svc_intf_hot_unplug_request *request;
+ struct gb_module *module;
+ u8 intf_id;
+
+ /* The request message size has already been verified. */
+ request = operation->request->payload;
+ intf_id = request->intf_id;
+
+ dev_dbg(&svc->dev, "%s - id = %u\n", __func__, intf_id);
+
+ /* All modules are considered 1x2 for now */
+ module = gb_svc_module_lookup(svc, intf_id);
+ if (!module) {
+ dev_warn(&svc->dev, "could not find hot-unplug interface %u\n",
intf_id);
return;
}
- ret = gb_svc_read_and_clear_module_boot_status(intf);
- if (ret)
- goto destroy_interface;
+ module->disconnected = true;
- intf->unipro_mfg_id = le32_to_cpu(request->data.unipro_mfg_id);
- intf->unipro_prod_id = le32_to_cpu(request->data.unipro_prod_id);
- intf->vendor_id = le32_to_cpu(request->data.ara_vend_id);
- intf->product_id = le32_to_cpu(request->data.ara_prod_id);
+ gb_module_del(module);
+ list_del(&module->hd_node);
+ gb_module_put(module);
+}
- /*
- * Create a device id for the interface:
- * - device id 0 (GB_DEVICE_ID_SVC) belongs to the SVC
- * - device id 1 (GB_DEVICE_ID_AP) belongs to the AP
- *
- * XXX Do we need to allocate device ID for SVC or the AP here? And what
- * XXX about an AP with multiple interface blocks?
- */
- device_id = ida_simple_get(&svc->device_id_map,
- GB_DEVICE_ID_MODULES_START, 0, GFP_KERNEL);
- if (device_id < 0) {
- ret = device_id;
- dev_err(&svc->dev, "failed to allocate device id for interface %hhu: %d\n",
- intf_id, ret);
- goto destroy_interface;
+static void gb_svc_process_module_inserted(struct gb_operation *operation)
+{
+ struct gb_svc_module_inserted_request *request;
+ struct gb_connection *connection = operation->connection;
+ struct gb_svc *svc = gb_connection_get_data(connection);
+ struct gb_host_device *hd = svc->hd;
+ struct gb_module *module;
+ size_t num_interfaces;
+ u8 module_id;
+ u16 flags;
+ int ret;
+
+ /* The request message size has already been verified. */
+ request = operation->request->payload;
+ module_id = request->primary_intf_id;
+ num_interfaces = request->intf_count;
+ flags = le16_to_cpu(request->flags);
+
+ dev_dbg(&svc->dev, "%s - id = %u, num_interfaces = %zu, flags = 0x%04x\n",
+ __func__, module_id, num_interfaces, flags);
+
+ if (flags & GB_SVC_MODULE_INSERTED_FLAG_NO_PRIMARY) {
+ dev_warn(&svc->dev, "no primary interface detected on module %u\n",
+ module_id);
}
- ret = gb_svc_intf_device_id(svc, intf_id, device_id);
- if (ret) {
- dev_err(&svc->dev, "failed to set device id %hhu for interface %hhu: %d\n",
- device_id, intf_id, ret);
- goto ida_put;
+ module = gb_svc_module_lookup(svc, module_id);
+ if (module) {
+ dev_warn(&svc->dev, "unexpected module-inserted event %u\n",
+ module_id);
+ return;
}
- /*
- * Create a two-way route between the AP and the new interface
- */
- ret = gb_svc_route_create(svc, svc->ap_intf_id, GB_DEVICE_ID_AP,
- intf_id, device_id);
- if (ret) {
- dev_err(&svc->dev, "failed to create route to interface %hhu (device id %hhu): %d\n",
- intf_id, device_id, ret);
- goto svc_id_free;
+ module = gb_module_create(hd, module_id, num_interfaces);
+ if (!module) {
+ dev_err(&svc->dev, "failed to create module\n");
+ return;
}
- ret = gb_interface_init(intf, device_id);
+ ret = gb_module_add(module);
if (ret) {
- dev_err(&svc->dev, "failed to initialize interface %hhu (device id %hhu): %d\n",
- intf_id, device_id, ret);
- goto destroy_route;
+ gb_module_put(module);
+ return;
}
- return;
+ list_add(&module->hd_node, &hd->modules);
+}
-destroy_route:
- gb_svc_route_destroy(svc, svc->ap_intf_id, intf_id);
-svc_id_free:
- /*
- * XXX Should we tell SVC that this id doesn't belong to interface
- * XXX anymore.
- */
-ida_put:
- ida_simple_remove(&svc->device_id_map, device_id);
-destroy_interface:
- gb_interface_remove(intf);
+static void gb_svc_process_module_removed(struct gb_operation *operation)
+{
+ struct gb_svc_module_removed_request *request;
+ struct gb_connection *connection = operation->connection;
+ struct gb_svc *svc = gb_connection_get_data(connection);
+ struct gb_module *module;
+ u8 module_id;
+
+ /* The request message size has already been verified. */
+ request = operation->request->payload;
+ module_id = request->primary_intf_id;
+
+ dev_dbg(&svc->dev, "%s - id = %u\n", __func__, module_id);
+
+ module = gb_svc_module_lookup(svc, module_id);
+ if (!module) {
+ dev_warn(&svc->dev, "unexpected module-removed event %u\n",
+ module_id);
+ return;
+ }
+
+ module->disconnected = true;
+
+ gb_module_del(module);
+ list_del(&module->hd_node);
+ gb_module_put(module);
}
-static void gb_svc_process_intf_hot_unplug(struct gb_operation *operation)
+static void gb_svc_process_intf_mailbox_event(struct gb_operation *operation)
{
- struct gb_svc *svc = operation->connection->private;
- struct gb_svc_intf_hot_unplug_request *request;
- struct gb_host_device *hd = operation->connection->hd;
+ struct gb_svc_intf_mailbox_event_request *request;
+ struct gb_connection *connection = operation->connection;
+ struct gb_svc *svc = gb_connection_get_data(connection);
struct gb_interface *intf;
u8 intf_id;
+ u16 result_code;
+ u32 mailbox;
/* The request message size has already been verified. */
request = operation->request->payload;
intf_id = request->intf_id;
+ result_code = le16_to_cpu(request->result_code);
+ mailbox = le32_to_cpu(request->mailbox);
- dev_dbg(&svc->dev, "%s - id = %u\n", __func__, intf_id);
+ dev_dbg(&svc->dev, "%s - id = %u, result = 0x%04x, mailbox = 0x%08x\n",
+ __func__, intf_id, result_code, mailbox);
- intf = gb_interface_find(hd, intf_id);
+ intf = gb_svc_interface_lookup(svc, intf_id);
if (!intf) {
- dev_warn(&svc->dev, "could not find hot-unplug interface %hhu\n",
- intf_id);
+ dev_warn(&svc->dev, "unexpected mailbox event %u\n", intf_id);
return;
}
- gb_svc_intf_remove(svc, intf);
+ gb_interface_mailbox_event(intf, result_code, mailbox);
}
static void gb_svc_process_deferred_request(struct work_struct *work)
dr = container_of(work, struct gb_svc_deferred_request, work);
operation = dr->operation;
- svc = operation->connection->private;
+ svc = gb_connection_get_data(operation->connection);
type = operation->request->header->type;
switch (type) {
+ case GB_SVC_TYPE_SVC_HELLO:
+ gb_svc_process_hello_deferred(operation);
+ break;
case GB_SVC_TYPE_INTF_HOTPLUG:
gb_svc_process_intf_hotplug(operation);
break;
case GB_SVC_TYPE_INTF_HOT_UNPLUG:
gb_svc_process_intf_hot_unplug(operation);
break;
+ case GB_SVC_TYPE_MODULE_INSERTED:
+ gb_svc_process_module_inserted(operation);
+ break;
+ case GB_SVC_TYPE_MODULE_REMOVED:
+ gb_svc_process_module_removed(operation);
+ break;
+ case GB_SVC_TYPE_INTF_MAILBOX_EVENT:
+ gb_svc_process_intf_mailbox_event(operation);
+ break;
default:
- dev_err(&svc->dev, "bad deferred request type: %02x\n", type);
+ dev_err(&svc->dev, "bad deferred request type: 0x%02x\n", type);
}
gb_operation_put(operation);
static int gb_svc_queue_deferred_request(struct gb_operation *operation)
{
- struct gb_svc *svc = operation->connection->private;
+ struct gb_svc *svc = gb_connection_get_data(operation->connection);
struct gb_svc_deferred_request *dr;
dr = kmalloc(sizeof(*dr), GFP_KERNEL);
*/
static int gb_svc_intf_hotplug_recv(struct gb_operation *op)
{
- struct gb_svc *svc = op->connection->private;
+ struct gb_svc *svc = gb_connection_get_data(op->connection);
struct gb_svc_intf_hotplug_request *request;
if (op->request->payload_size < sizeof(*request)) {
static int gb_svc_intf_hot_unplug_recv(struct gb_operation *op)
{
- struct gb_svc *svc = op->connection->private;
+ struct gb_svc *svc = gb_connection_get_data(op->connection);
struct gb_svc_intf_hot_unplug_request *request;
if (op->request->payload_size < sizeof(*request)) {
static int gb_svc_intf_reset_recv(struct gb_operation *op)
{
- struct gb_svc *svc = op->connection->private;
+ struct gb_svc *svc = gb_connection_get_data(op->connection);
struct gb_message *request = op->request;
struct gb_svc_intf_reset_request *reset;
u8 intf_id;
return 0;
}
-static int gb_svc_request_recv(u8 type, struct gb_operation *op)
+static int gb_svc_key_code_map(struct gb_svc *svc, u16 key_code, u16 *code)
+{
+ switch (key_code) {
+ case GB_KEYCODE_ARA:
+ *code = SVC_KEY_ARA_BUTTON;
+ break;
+ default:
+ dev_warn(&svc->dev, "unknown keycode received: %u\n", key_code);
+ return -EINVAL;
+ }
+
+ return 0;
+}
+
+static int gb_svc_key_event_recv(struct gb_operation *op)
+{
+ struct gb_svc *svc = gb_connection_get_data(op->connection);
+ struct gb_message *request = op->request;
+ struct gb_svc_key_event_request *key;
+ u16 code;
+ u8 event;
+ int ret;
+
+ if (request->payload_size < sizeof(*key)) {
+ dev_warn(&svc->dev, "short key request received (%zu < %zu)\n",
+ request->payload_size, sizeof(*key));
+ return -EINVAL;
+ }
+
+ key = request->payload;
+
+ ret = gb_svc_key_code_map(svc, le16_to_cpu(key->key_code), &code);
+ if (ret < 0)
+ return ret;
+
+ event = key->key_event;
+ if ((event != GB_SVC_KEY_PRESSED) && (event != GB_SVC_KEY_RELEASED)) {
+ dev_warn(&svc->dev, "unknown key event received: %u\n", event);
+ return -EINVAL;
+ }
+
+ input_report_key(svc->input, code, (event == GB_SVC_KEY_PRESSED));
+ input_sync(svc->input);
+
+ return 0;
+}
+
+static int gb_svc_module_inserted_recv(struct gb_operation *op)
+{
+ struct gb_svc *svc = gb_connection_get_data(op->connection);
+ struct gb_svc_module_inserted_request *request;
+
+ if (op->request->payload_size < sizeof(*request)) {
+ dev_warn(&svc->dev, "short module-inserted request received (%zu < %zu)\n",
+ op->request->payload_size, sizeof(*request));
+ return -EINVAL;
+ }
+
+ request = op->request->payload;
+
+ dev_dbg(&svc->dev, "%s - id = %u\n", __func__,
+ request->primary_intf_id);
+
+ return gb_svc_queue_deferred_request(op);
+}
+
+static int gb_svc_module_removed_recv(struct gb_operation *op)
+{
+ struct gb_svc *svc = gb_connection_get_data(op->connection);
+ struct gb_svc_module_removed_request *request;
+
+ if (op->request->payload_size < sizeof(*request)) {
+ dev_warn(&svc->dev, "short module-removed request received (%zu < %zu)\n",
+ op->request->payload_size, sizeof(*request));
+ return -EINVAL;
+ }
+
+ request = op->request->payload;
+
+ dev_dbg(&svc->dev, "%s - id = %u\n", __func__,
+ request->primary_intf_id);
+
+ return gb_svc_queue_deferred_request(op);
+}
+
+static int gb_svc_intf_mailbox_event_recv(struct gb_operation *op)
+{
+ struct gb_svc *svc = gb_connection_get_data(op->connection);
+ struct gb_svc_intf_mailbox_event_request *request;
+
+ if (op->request->payload_size < sizeof(*request)) {
+ dev_warn(&svc->dev, "short mailbox request received (%zu < %zu)\n",
+ op->request->payload_size, sizeof(*request));
+ return -EINVAL;
+ }
+
+ request = op->request->payload;
+
+ dev_dbg(&svc->dev, "%s - id = %u\n", __func__, request->intf_id);
+
+ return gb_svc_queue_deferred_request(op);
+}
+
+static int gb_svc_request_handler(struct gb_operation *op)
{
struct gb_connection *connection = op->connection;
- struct gb_svc *svc = connection->private;
+ struct gb_svc *svc = gb_connection_get_data(connection);
+ u8 type = op->type;
int ret = 0;
/*
* need to protect 'state' for any races.
*/
switch (type) {
- case GB_REQUEST_TYPE_PROTOCOL_VERSION:
+ case GB_SVC_TYPE_PROTOCOL_VERSION:
if (svc->state != GB_SVC_STATE_RESET)
ret = -EINVAL;
break;
}
switch (type) {
- case GB_REQUEST_TYPE_PROTOCOL_VERSION:
+ case GB_SVC_TYPE_PROTOCOL_VERSION:
ret = gb_svc_version_request(op);
if (!ret)
svc->state = GB_SVC_STATE_PROTOCOL_VERSION;
return gb_svc_intf_hot_unplug_recv(op);
case GB_SVC_TYPE_INTF_RESET:
return gb_svc_intf_reset_recv(op);
+ case GB_SVC_TYPE_KEY_EVENT:
+ return gb_svc_key_event_recv(op);
+ case GB_SVC_TYPE_MODULE_INSERTED:
+ return gb_svc_module_inserted_recv(op);
+ case GB_SVC_TYPE_MODULE_REMOVED:
+ return gb_svc_module_removed_recv(op);
+ case GB_SVC_TYPE_INTF_MAILBOX_EVENT:
+ return gb_svc_intf_mailbox_event_recv(op);
default:
dev_warn(&svc->dev, "unsupported request 0x%02x\n", type);
return -EINVAL;
}
}
+static struct input_dev *gb_svc_input_create(struct gb_svc *svc)
+{
+ struct input_dev *input_dev;
+
+ input_dev = input_allocate_device();
+ if (!input_dev)
+ return ERR_PTR(-ENOMEM);
+
+ input_dev->name = dev_name(&svc->dev);
+ svc->input_phys = kasprintf(GFP_KERNEL, "greybus-%s/input0",
+ input_dev->name);
+ if (!svc->input_phys)
+ goto err_free_input;
+
+ input_dev->phys = svc->input_phys;
+ input_dev->dev.parent = &svc->dev;
+
+ input_set_drvdata(input_dev, svc);
+
+ input_set_capability(input_dev, EV_KEY, SVC_KEY_ARA_BUTTON);
+
+ return input_dev;
+
+err_free_input:
+ input_free_device(svc->input);
+ return ERR_PTR(-ENOMEM);
+}
+
static void gb_svc_release(struct device *dev)
{
struct gb_svc *svc = to_gb_svc(dev);
+ if (svc->connection)
+ gb_connection_destroy(svc->connection);
ida_destroy(&svc->device_id_map);
destroy_workqueue(svc->wq);
+ kfree(svc->input_phys);
kfree(svc);
}
.release = gb_svc_release,
};
-static int gb_svc_connection_init(struct gb_connection *connection)
+struct gb_svc *gb_svc_create(struct gb_host_device *hd)
{
- struct gb_host_device *hd = connection->hd;
struct gb_svc *svc;
svc = kzalloc(sizeof(*svc), GFP_KERNEL);
if (!svc)
- return -ENOMEM;
+ return NULL;
svc->wq = alloc_workqueue("%s:svc", WQ_UNBOUND, 1, dev_name(&hd->dev));
if (!svc->wq) {
kfree(svc);
- return -ENOMEM;
+ return NULL;
}
svc->dev.parent = &hd->dev;
ida_init(&svc->device_id_map);
svc->state = GB_SVC_STATE_RESET;
- svc->connection = connection;
- connection->private = svc;
+ svc->hd = hd;
+
+ svc->input = gb_svc_input_create(svc);
+ if (IS_ERR(svc->input)) {
+ dev_err(&svc->dev, "failed to create input device: %ld\n",
+ PTR_ERR(svc->input));
+ goto err_put_device;
+ }
+
+ svc->connection = gb_connection_create_static(hd, GB_SVC_CPORT_ID,
+ gb_svc_request_handler);
+ if (IS_ERR(svc->connection)) {
+ dev_err(&svc->dev, "failed to create connection: %ld\n",
+ PTR_ERR(svc->connection));
+ goto err_free_input;
+ }
+
+ gb_connection_set_data(svc->connection, svc);
- hd->svc = svc;
+ return svc;
+
+err_free_input:
+ input_free_device(svc->input);
+err_put_device:
+ put_device(&svc->dev);
+ return NULL;
+}
+
+int gb_svc_add(struct gb_svc *svc)
+{
+ int ret;
+
+ /*
+ * The SVC protocol is currently driven by the SVC, so the SVC device
+ * is added from the connection request handler when enough
+ * information has been received.
+ */
+ ret = gb_connection_enable(svc->connection);
+ if (ret)
+ return ret;
return 0;
}
-static void gb_svc_connection_exit(struct gb_connection *connection)
+static void gb_svc_remove_modules(struct gb_svc *svc)
+{
+ struct gb_host_device *hd = svc->hd;
+ struct gb_module *module, *tmp;
+
+ list_for_each_entry_safe(module, tmp, &hd->modules, hd_node) {
+ gb_module_del(module);
+ list_del(&module->hd_node);
+ gb_module_put(module);
+ }
+}
+
+void gb_svc_del(struct gb_svc *svc)
{
- struct gb_svc *svc = connection->private;
+ gb_connection_disable(svc->connection);
- if (device_is_registered(&svc->dev))
+ /*
+ * The SVC device and input device may have been registered
+ * from the request handler.
+ */
+ if (device_is_registered(&svc->dev)) {
+ gb_svc_debugfs_exit(svc);
+ gb_svc_watchdog_destroy(svc);
+ input_unregister_device(svc->input);
device_del(&svc->dev);
+ }
- connection->hd->svc = NULL;
- connection->private = NULL;
+ flush_workqueue(svc->wq);
- put_device(&svc->dev);
+ gb_svc_remove_modules(svc);
}
-static struct gb_protocol svc_protocol = {
- .name = "svc",
- .id = GREYBUS_PROTOCOL_SVC,
- .major = GB_SVC_VERSION_MAJOR,
- .minor = GB_SVC_VERSION_MINOR,
- .connection_init = gb_svc_connection_init,
- .connection_exit = gb_svc_connection_exit,
- .request_recv = gb_svc_request_recv,
- .flags = GB_PROTOCOL_SKIP_CONTROL_CONNECTED |
- GB_PROTOCOL_SKIP_CONTROL_DISCONNECTED |
- GB_PROTOCOL_SKIP_VERSION,
-};
-gb_builtin_protocol_driver(svc_protocol);
+void gb_svc_put(struct gb_svc *svc)
+{
+ put_device(&svc->dev);
+}
projects / cascardo / linux.git / blobdiff