@@ -13,10 +13,12 @@ config VIDEO_ATOMISP
tristate "Intel Atom Image Signal Processor Driver"
depends on VIDEO_DEV && INTEL_ATOMISP
depends on PMIC_OPREGION
+ depends on I2C
select V4L2_FWNODE
select IOSF_MBI
select VIDEOBUF2_VMALLOC
select VIDEO_V4L2_SUBDEV_API
+ select INTEL_CIO2_BRIDGE
help
Say Y here if your platform supports Intel Atom SoC
camera imaging subsystem.
@@ -30,9 +30,6 @@
#define CSI2_PAD_SOURCE 1
#define CSI2_PADS_NUM 2
-#define CSI2_MAX_LANES 4
-#define CSI2_MAX_LINK_FREQS 3
-
#define CSI2_MAX_ACPI_GPIOS 2u
struct acpi_device;
@@ -55,70 +52,6 @@ struct atomisp_csi2_acpi_gpio_parsing_data {
unsigned int map_count;
};
-enum atomisp_csi2_sensor_swnodes {
- SWNODE_SENSOR,
- SWNODE_SENSOR_PORT,
- SWNODE_SENSOR_ENDPOINT,
- SWNODE_CSI2_PORT,
- SWNODE_CSI2_ENDPOINT,
- SWNODE_COUNT
-};
-
-struct atomisp_csi2_property_names {
- char clock_frequency[16];
- char rotation[9];
- char bus_type[9];
- char data_lanes[11];
- char remote_endpoint[16];
- char link_frequencies[17];
-};
-
-struct atomisp_csi2_node_names {
- char port[7];
- char endpoint[11];
- char remote_port[7];
-};
-
-struct atomisp_csi2_sensor_config {
- const char *hid;
- int lanes;
- int nr_link_freqs;
- u64 link_freqs[CSI2_MAX_LINK_FREQS];
-};
-
-struct atomisp_csi2_sensor {
- /* Append port in "-%u" format as suffix of HID */
- char name[ACPI_ID_LEN + 4];
- struct acpi_device *adev;
- int port;
- int lanes;
-
- /* SWNODE_COUNT + 1 for terminating NULL */
- const struct software_node *group[SWNODE_COUNT + 1];
- struct software_node swnodes[SWNODE_COUNT];
- struct atomisp_csi2_node_names node_names;
- struct atomisp_csi2_property_names prop_names;
- /* "clock-frequency", "rotation" + terminating entry */
- struct property_entry dev_properties[3];
- /* "bus-type", "data-lanes", "remote-endpoint" + "link-freq" + terminating entry */
- struct property_entry ep_properties[5];
- /* "data-lanes", "remote-endpoint" + terminating entry */
- struct property_entry csi2_properties[3];
- struct software_node_ref_args local_ref[1];
- struct software_node_ref_args remote_ref[1];
- struct software_node_ref_args vcm_ref[1];
- /* GPIO mappings storage */
- struct atomisp_csi2_acpi_gpio_map gpio_map;
-};
-
-struct atomisp_csi2_bridge {
- struct software_node csi2_node;
- char csi2_node_name[14];
- u32 data_lanes[CSI2_MAX_LANES];
- unsigned int n_sensors;
- struct atomisp_csi2_sensor sensors[ATOMISP_CAMERA_NR_PORTS];
-};
-
struct atomisp_mipi_csi2_device {
struct v4l2_subdev subdev;
struct media_pad pads[CSI2_PADS_NUM];
@@ -14,31 +14,14 @@
#include <linux/device.h>
#include <linux/dmi.h>
#include <linux/property.h>
+
+#include <media/intel-cio2-bridge.h>
#include <media/v4l2-fwnode.h>
#include "atomisp_cmd.h"
#include "atomisp_csi2.h"
#include "atomisp_internal.h"
-#define NODE_SENSOR(_HID, _PROPS) \
- ((const struct software_node) { \
- .name = _HID, \
- .properties = _PROPS, \
- })
-
-#define NODE_PORT(_PORT, _SENSOR_NODE) \
- ((const struct software_node) { \
- .name = _PORT, \
- .parent = _SENSOR_NODE, \
- })
-
-#define NODE_ENDPOINT(_EP, _PORT, _PROPS) \
- ((const struct software_node) { \
- .name = _EP, \
- .parent = _PORT, \
- .properties = _PROPS, \
- })
-
#define PMC_CLK_RATE_19_2MHZ 19200000
/*
@@ -91,7 +74,7 @@ static const guid_t atomisp_dsm_guid =
* or which have not yet been converted to work without atomisp_gmin
* power-management and with v4l2-async probing.
*/
-static const struct atomisp_csi2_sensor_config supported_sensors[] = {
+static const struct intel_cio2_sensor_config supported_sensors[] = {
/* GalaxyCore GC0310 */
{ "INT0310", 1 },
/* Omnivision OV2680 */
@@ -402,8 +385,7 @@ static int atomisp_csi2_handle_acpi_gpio_res(struct acpi_resource *ares, void *_
* the INT3472 discrete.c code and there is some overlap, but there are
* enough differences that it is difficult to share the code.
*/
-static int atomisp_csi2_add_gpio_mappings(struct atomisp_csi2_sensor *sensor,
- struct acpi_device *adev)
+static int atomisp_csi2_add_gpio_mappings(struct acpi_device *adev)
{
struct atomisp_csi2_acpi_gpio_parsing_data data = { };
LIST_HEAD(resource_list);
@@ -471,9 +453,12 @@ static int atomisp_csi2_add_gpio_mappings(struct atomisp_csi2_sensor *sensor,
}
}
+ data.map = kzalloc(sizeof(*data.map), GFP_KERNEL);
+ if (!data.map)
+ return -ENOMEM;
+
/* Now parse the ACPI resources and build the lookup table */
data.adev = adev;
- data.map = &sensor->gpio_map;
ret = acpi_dev_get_resources(adev, &resource_list,
atomisp_csi2_handle_acpi_gpio_res, &data);
if (ret < 0)
@@ -493,220 +478,52 @@ static int atomisp_csi2_add_gpio_mappings(struct atomisp_csi2_sensor *sensor,
return ret;
}
-static const struct atomisp_csi2_property_names prop_names = {
- .clock_frequency = "clock-frequency",
- .rotation = "rotation",
- .bus_type = "bus-type",
- .data_lanes = "data-lanes",
- .remote_endpoint = "remote-endpoint",
- .link_frequencies = "link-frequencies",
-};
-
-static void atomisp_csi2_create_fwnode_properties(struct atomisp_csi2_sensor *sensor,
- struct atomisp_csi2_bridge *bridge,
- const struct atomisp_csi2_sensor_config *cfg)
+static int atomisp_csi2_parse_sensor_fwnode(
+ struct acpi_device *adev,
+ struct intel_cio2_sensor *sensor,
+ const struct intel_cio2_sensor_config *cfg)
{
- sensor->prop_names = prop_names;
-
- sensor->local_ref[0] = SOFTWARE_NODE_REFERENCE(&sensor->swnodes[SWNODE_CSI2_ENDPOINT]);
- sensor->remote_ref[0] = SOFTWARE_NODE_REFERENCE(&sensor->swnodes[SWNODE_SENSOR_ENDPOINT]);
-
- sensor->dev_properties[0] = PROPERTY_ENTRY_U32(sensor->prop_names.clock_frequency,
- PMC_CLK_RATE_19_2MHZ);
- sensor->dev_properties[1] = PROPERTY_ENTRY_U32(sensor->prop_names.rotation, 0);
-
- sensor->ep_properties[0] = PROPERTY_ENTRY_U32(sensor->prop_names.bus_type,
- V4L2_FWNODE_BUS_TYPE_CSI2_DPHY);
- sensor->ep_properties[1] = PROPERTY_ENTRY_U32_ARRAY_LEN(sensor->prop_names.data_lanes,
- bridge->data_lanes,
- sensor->lanes);
- sensor->ep_properties[2] = PROPERTY_ENTRY_REF_ARRAY(sensor->prop_names.remote_endpoint,
- sensor->local_ref);
- if (cfg->nr_link_freqs > 0)
- sensor->ep_properties[3] =
- PROPERTY_ENTRY_U64_ARRAY_LEN(sensor->prop_names.link_frequencies,
- cfg->link_freqs, cfg->nr_link_freqs);
-
- sensor->csi2_properties[0] = PROPERTY_ENTRY_U32_ARRAY_LEN(sensor->prop_names.data_lanes,
- bridge->data_lanes,
- sensor->lanes);
- sensor->csi2_properties[1] = PROPERTY_ENTRY_REF_ARRAY(sensor->prop_names.remote_endpoint,
- sensor->remote_ref);
-}
-
-static void atomisp_csi2_init_swnode_names(struct atomisp_csi2_sensor *sensor)
-{
- snprintf(sensor->node_names.remote_port,
- sizeof(sensor->node_names.remote_port),
- SWNODE_GRAPH_PORT_NAME_FMT, sensor->port);
- snprintf(sensor->node_names.port,
- sizeof(sensor->node_names.port),
- SWNODE_GRAPH_PORT_NAME_FMT, 0); /* Always port 0 */
- snprintf(sensor->node_names.endpoint,
- sizeof(sensor->node_names.endpoint),
- SWNODE_GRAPH_ENDPOINT_NAME_FMT, 0); /* And endpoint 0 */
-}
-
-static void atomisp_csi2_init_swnode_group(struct atomisp_csi2_sensor *sensor)
-{
- struct software_node *nodes = sensor->swnodes;
-
- sensor->group[SWNODE_SENSOR] = &nodes[SWNODE_SENSOR];
- sensor->group[SWNODE_SENSOR_PORT] = &nodes[SWNODE_SENSOR_PORT];
- sensor->group[SWNODE_SENSOR_ENDPOINT] = &nodes[SWNODE_SENSOR_ENDPOINT];
- sensor->group[SWNODE_CSI2_PORT] = &nodes[SWNODE_CSI2_PORT];
- sensor->group[SWNODE_CSI2_ENDPOINT] = &nodes[SWNODE_CSI2_ENDPOINT];
-}
-
-static void atomisp_csi2_create_connection_swnodes(struct atomisp_csi2_bridge *bridge,
- struct atomisp_csi2_sensor *sensor)
-{
- struct software_node *nodes = sensor->swnodes;
-
- atomisp_csi2_init_swnode_names(sensor);
-
- nodes[SWNODE_SENSOR] = NODE_SENSOR(sensor->name,
- sensor->dev_properties);
- nodes[SWNODE_SENSOR_PORT] = NODE_PORT(sensor->node_names.port,
- &nodes[SWNODE_SENSOR]);
- nodes[SWNODE_SENSOR_ENDPOINT] = NODE_ENDPOINT(sensor->node_names.endpoint,
- &nodes[SWNODE_SENSOR_PORT],
- sensor->ep_properties);
- nodes[SWNODE_CSI2_PORT] = NODE_PORT(sensor->node_names.remote_port,
- &bridge->csi2_node);
- nodes[SWNODE_CSI2_ENDPOINT] = NODE_ENDPOINT(sensor->node_names.endpoint,
- &nodes[SWNODE_CSI2_PORT],
- sensor->csi2_properties);
-
- atomisp_csi2_init_swnode_group(sensor);
-}
-
-static void atomisp_csi2_unregister_sensors(struct atomisp_csi2_bridge *bridge)
-{
- struct atomisp_csi2_sensor *sensor;
- unsigned int i;
-
- for (i = 0; i < bridge->n_sensors; i++) {
- sensor = &bridge->sensors[i];
- software_node_unregister_node_group(sensor->group);
- acpi_dev_remove_driver_gpios(sensor->adev);
- acpi_dev_put(sensor->adev);
- }
-}
-
-static int atomisp_csi2_connect_sensor(const struct atomisp_csi2_sensor_config *cfg,
- struct atomisp_csi2_bridge *bridge,
- struct atomisp_device *isp)
-{
- struct fwnode_handle *fwnode, *primary;
- struct atomisp_csi2_sensor *sensor;
- struct acpi_device *adev;
int ret, clock_num;
- for_each_acpi_dev_match(adev, cfg->hid, NULL, -1) {
- if (!adev->status.enabled)
- continue;
+ /*
+ * ACPI takes care of turning the PMC clock on and off, but on BYT
+ * the clock defaults to 25 MHz instead of the expected 19.2 MHz.
+ * Get the PMC-clock number from ACPI PR0 method and set it to 19.2 MHz.
+ * The PMC-clock number is also used to determine the default CSI port.
+ */
+ clock_num = atomisp_csi2_get_pmc_clk_nr_from_acpi_pr0(adev);
- if (bridge->n_sensors >= ATOMISP_CAMERA_NR_PORTS) {
- dev_err(isp->dev, "Exceeded available CSI2 ports\n");
- ret = -EOVERFLOW;
- goto err_put_adev;
- }
+ ret = atomisp_csi2_set_pmc_clk_freq(adev, clock_num);
+ if (ret)
+ return ret;
- sensor = &bridge->sensors[bridge->n_sensors];
-
- /*
- * ACPI takes care of turning the PMC clock on and off, but on BYT
- * the clock defaults to 25 MHz instead of the expected 19.2 MHz.
- * Get the PMC-clock number from ACPI _PR0 method and set it to 19.2 MHz.
- * The PMC-clock number is also used to determine the default CSI port.
- */
- clock_num = atomisp_csi2_get_pmc_clk_nr_from_acpi_pr0(adev);
-
- ret = atomisp_csi2_set_pmc_clk_freq(adev, clock_num);
- if (ret)
- goto err_put_adev;
-
- sensor->port = atomisp_csi2_get_port(adev, clock_num);
- if (sensor->port >= ATOMISP_CAMERA_NR_PORTS) {
- acpi_handle_err(adev->handle, "Invalid port: %d\n", sensor->port);
- ret = -EINVAL;
- goto err_put_adev;
- }
-
- sensor->lanes = gmin_cfg_get_int(adev, "CsiLanes", cfg->lanes);
- if (sensor->lanes > CSI2_MAX_LANES) {
- acpi_handle_err(adev->handle, "Invalid number of lanes: %d\n", sensor->lanes);
- ret = -EINVAL;
- goto err_put_adev;
- }
-
- ret = atomisp_csi2_add_gpio_mappings(sensor, adev);
- if (ret)
- goto err_put_adev;
-
- snprintf(sensor->name, sizeof(sensor->name), "%s-%u",
- cfg->hid, sensor->port);
-
- atomisp_csi2_create_fwnode_properties(sensor, bridge, cfg);
- atomisp_csi2_create_connection_swnodes(bridge, sensor);
-
- ret = software_node_register_node_group(sensor->group);
- if (ret)
- goto err_remove_mappings;
-
- fwnode = software_node_fwnode(&sensor->swnodes[SWNODE_SENSOR]);
- if (!fwnode) {
- ret = -ENODEV;
- goto err_free_swnodes;
- }
-
- sensor->adev = acpi_dev_get(adev);
-
- primary = acpi_fwnode_handle(adev);
- primary->secondary = fwnode;
-
- bridge->n_sensors++;
+ sensor->link = atomisp_csi2_get_port(adev, clock_num);
+ if (sensor->link >= ATOMISP_CAMERA_NR_PORTS) {
+ dev_err(&adev->dev, "Invalid port: %u\n", sensor->link);
+ return -EINVAL;
}
- return 0;
-
-err_free_swnodes:
- software_node_unregister_node_group(sensor->group);
-err_remove_mappings:
- acpi_dev_remove_driver_gpios(adev);
-err_put_adev:
- acpi_dev_put(adev);
- return ret;
-}
-
-static int atomisp_csi2_connect_sensors(struct atomisp_csi2_bridge *bridge,
- struct atomisp_device *isp)
-{
- unsigned int i;
- int ret;
-
- for (i = 0; i < ARRAY_SIZE(supported_sensors); i++) {
- const struct atomisp_csi2_sensor_config *cfg = &supported_sensors[i];
-
- ret = atomisp_csi2_connect_sensor(cfg, bridge, isp);
- if (ret)
- goto err_unregister_sensors;
+ sensor->lanes = gmin_cfg_get_int(adev, "CsiLanes", cfg->default_lanes);
+ if (sensor->lanes > INTEL_CIO2_MAX_LANES) {
+ dev_err(&adev->dev, "Invalid lane-count: %d\n", sensor->lanes);
+ return -EINVAL;
}
- return 0;
+ ret = atomisp_csi2_add_gpio_mappings(adev);
+ if (ret)
+ return ret;
-err_unregister_sensors:
- atomisp_csi2_unregister_sensors(bridge);
- return ret;
+ sensor->mclkspeed = PMC_CLK_RATE_19_2MHZ;
+ sensor->rotation = 0;
+ sensor->orientation = V4L2_FWNODE_ORIENTATION_EXTERNAL;
+
+ return 0;
}
int atomisp_csi2_bridge_init(struct atomisp_device *isp)
{
- struct atomisp_csi2_bridge *bridge;
struct device *dev = isp->dev;
struct fwnode_handle *fwnode;
- int i, ret;
/*
* This function is intended to run only once and then leave
@@ -718,52 +535,8 @@ int atomisp_csi2_bridge_init(struct atomisp_device *isp)
if (fwnode && fwnode->secondary)
return 0;
- bridge = kzalloc(sizeof(*bridge), GFP_KERNEL);
- if (!bridge)
- return -ENOMEM;
-
- strscpy(bridge->csi2_node_name, "atomisp-csi2", sizeof(bridge->csi2_node_name));
- bridge->csi2_node.name = bridge->csi2_node_name;
-
- ret = software_node_register(&bridge->csi2_node);
- if (ret < 0) {
- dev_err(dev, "Failed to register the CSI2 HID node\n");
- goto err_free_bridge;
- }
-
- /*
- * Map the lane arrangement, which is fixed for the ISP2 (meaning we
- * only need one, rather than one per sensor). We include it as a
- * member of the bridge struct rather than a global variable so
- * that it survives if the module is unloaded along with the rest of
- * the struct.
- */
- for (i = 0; i < CSI2_MAX_LANES; i++)
- bridge->data_lanes[i] = i + 1;
-
- ret = atomisp_csi2_connect_sensors(bridge, isp);
- if (ret || bridge->n_sensors == 0)
- goto err_unregister_csi2;
-
- fwnode = software_node_fwnode(&bridge->csi2_node);
- if (!fwnode) {
- dev_err(dev, "Error getting fwnode from csi2 software_node\n");
- ret = -ENODEV;
- goto err_unregister_sensors;
- }
-
- set_secondary_fwnode(dev, fwnode);
-
- return 0;
-
-err_unregister_sensors:
- atomisp_csi2_unregister_sensors(bridge);
-err_unregister_csi2:
- software_node_unregister(&bridge->csi2_node);
-err_free_bridge:
- kfree(bridge);
-
- return ret;
+ return intel_cio2_bridge_init(dev, atomisp_csi2_parse_sensor_fwnode,
+ supported_sensors);
}
/******* V4L2 sub-device asynchronous registration callbacks***********/
@@ -47,6 +47,7 @@ struct intel_cio2_node_names {
struct intel_cio2_sensor_config {
const char *hid;
+ const u8 default_lanes;
const u8 nr_link_freqs;
const u64 link_freqs[INTEL_CIO2_MAX_NUM_LINK_FREQS];
};
Remove the duplicate csi2/cio2 ACPI bridge code and use the new common cio2_bridge_init() functionality. Signed-off-by: Hans de Goede <hdegoede@redhat.com> --- drivers/staging/media/atomisp/Kconfig | 2 + .../staging/media/atomisp/pci/atomisp_csi2.h | 67 ---- .../media/atomisp/pci/atomisp_csi2_bridge.c | 307 +++--------------- include/media/intel-cio2-bridge.h | 1 + 4 files changed, 43 insertions(+), 334 deletions(-)