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intel_th: Make the switch allocate its subdevices

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Instead of allocating devices for every possible output subdevice,
allow the switch to allocate only the ones that it knows about.

Signed-off-by: Alexander Shishkin <alexander.shishkin@linux.intel.com>
This commit is contained in:
Alexander Shishkin
2017-08-10 18:28:38 +03:00
parent 8edc514b01
commit a753bfcfdb
3 changed files with 236 additions and 94 deletions
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13
drivers/hwtracing/intel_th/intel_th.h
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@@ -216,6 +216,7 @@ int intel_th_trace_enable(struct intel_th_device *thdev);
int intel_th_trace_disable(struct intel_th_device *thdev);
int intel_th_set_output(struct intel_th_device *thdev,
unsigned int master);
int intel_th_output_enable(struct intel_th *th, unsigned int otype);
enum {
TH_MMIO_CONFIG = 0,
@@ -223,8 +224,9 @@ enum {
TH_MMIO_END,
};
#define TH_SUBDEVICE_MAX 6
#define TH_POSSIBLE_OUTPUTS 8
/* Total number of possible subdevices: outputs + GTH + STH */
#define TH_SUBDEVICE_MAX (TH_POSSIBLE_OUTPUTS + 2)
#define TH_CONFIGURABLE_MASTERS 256
#define TH_MSC_MAX 2
@@ -233,6 +235,10 @@ enum {
* @dev: driver core's device
* @thdev: subdevices
* @hub: "switch" subdevice (GTH)
* @resource: resources of the entire controller
* @num_thdevs: number of devices in the @thdev array
* @num_resources: number or resources in the @resource array
* @irq: irq number
* @id: this Intel TH controller's device ID in the system
* @major: device node major for output devices
*/
@@ -242,6 +248,11 @@ struct intel_th {
struct intel_th_device *thdev[TH_SUBDEVICE_MAX];
struct intel_th_device *hub;
struct resource *resource;
unsigned int num_thdevs;
unsigned int num_resources;
int irq;
int id;
int major;
#ifdef CONFIG_MODULES