lkml.org 
[lkml]   [2020]   [Sep]   [28]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
Patch in this message
/
From
Subject[PATCH 02/11] firmware: ti_sci: Use struct ti_sci_resource_desc in get_range ops
Date
Use the ti_sci_resource_desc directly and update it's start and num members
directly instead of requiring individual parameters for them.

This will allow easy extension of the RM parameters without changing API.

Signed-off-by: Peter Ujfalusi <peter.ujfalusi@ti.com>
---
drivers/firmware/ti_sci.c | 32 ++++++++++++--------------
include/linux/soc/ti/ti_sci_protocol.h | 32 +++++++++++++-------------
2 files changed, 31 insertions(+), 33 deletions(-)

diff --git a/drivers/firmware/ti_sci.c b/drivers/firmware/ti_sci.c
index 65a8c2e82093..7a777e91ce3e 100644
--- a/drivers/firmware/ti_sci.c
+++ b/drivers/firmware/ti_sci.c
@@ -1703,14 +1703,14 @@ static int ti_sci_cmd_core_reboot(const struct ti_sci_handle *handle)
* @subtype: Resource assignment subtype that is being requested
* from the given device.
* @s_host: Host processor ID to which the resources are allocated
- * @range_start: Start index of the resource range
- * @range_num: Number of resources in the range
+ * @desc: Pointer to ti_sci_resource_desc to be updated with the
+ * resource range start index and number of resources
*
* Return: 0 if all went fine, else return appropriate error.
*/
static int ti_sci_get_resource_range(const struct ti_sci_handle *handle,
u32 dev_id, u8 subtype, u8 s_host,
- u16 *range_start, u16 *range_num)
+ struct ti_sci_resource_desc *desc)
{
struct ti_sci_msg_resp_get_resource_range *resp;
struct ti_sci_msg_req_get_resource_range *req;
@@ -1721,7 +1721,7 @@ static int ti_sci_get_resource_range(const struct ti_sci_handle *handle,

if (IS_ERR(handle))
return PTR_ERR(handle);
- if (!handle)
+ if (!handle || !desc)
return -EINVAL;

info = handle_to_ti_sci_info(handle);
@@ -1754,8 +1754,8 @@ static int ti_sci_get_resource_range(const struct ti_sci_handle *handle,
} else if (!resp->range_start && !resp->range_num) {
ret = -ENODEV;
} else {
- *range_start = resp->range_start;
- *range_num = resp->range_num;
+ desc->start = resp->range_start;
+ desc->num = resp->range_num;
};

fail:
@@ -1771,18 +1771,18 @@ static int ti_sci_get_resource_range(const struct ti_sci_handle *handle,
* @dev_id: TISCI device ID.
* @subtype: Resource assignment subtype that is being requested
* from the given device.
- * @range_start: Start index of the resource range
- * @range_num: Number of resources in the range
+ * @desc: Pointer to ti_sci_resource_desc to be updated with the
+ * resource range start index and number of resources
*
* Return: 0 if all went fine, else return appropriate error.
*/
static int ti_sci_cmd_get_resource_range(const struct ti_sci_handle *handle,
u32 dev_id, u8 subtype,
- u16 *range_start, u16 *range_num)
+ struct ti_sci_resource_desc *desc)
{
return ti_sci_get_resource_range(handle, dev_id, subtype,
TI_SCI_IRQ_SECONDARY_HOST_INVALID,
- range_start, range_num);
+ desc);
}

/**
@@ -1793,18 +1793,17 @@ static int ti_sci_cmd_get_resource_range(const struct ti_sci_handle *handle,
* @subtype: Resource assignment subtype that is being requested
* from the given device.
* @s_host: Host processor ID to which the resources are allocated
- * @range_start: Start index of the resource range
- * @range_num: Number of resources in the range
+ * @desc: Pointer to ti_sci_resource_desc to be updated with the
+ * resource range start index and number of resources
*
* Return: 0 if all went fine, else return appropriate error.
*/
static
int ti_sci_cmd_get_resource_range_from_shost(const struct ti_sci_handle *handle,
u32 dev_id, u8 subtype, u8 s_host,
- u16 *range_start, u16 *range_num)
+ struct ti_sci_resource_desc *desc)
{
- return ti_sci_get_resource_range(handle, dev_id, subtype, s_host,
- range_start, range_num);
+ return ti_sci_get_resource_range(handle, dev_id, subtype, s_host, desc);
}

/**
@@ -3243,8 +3242,7 @@ devm_ti_sci_get_resource_sets(const struct ti_sci_handle *handle,
for (i = 0; i < res->sets; i++) {
ret = handle->ops.rm_core_ops.get_range(handle, dev_id,
sub_types[i],
- &res->desc[i].start,
- &res->desc[i].num);
+ &res->desc[i]);
if (ret) {
dev_dbg(dev, "dev = %d subtype %d not allocated for this host\n",
dev_id, sub_types[i]);
diff --git a/include/linux/soc/ti/ti_sci_protocol.h b/include/linux/soc/ti/ti_sci_protocol.h
index d254d99fd45b..6cd537db4d33 100644
--- a/include/linux/soc/ti/ti_sci_protocol.h
+++ b/include/linux/soc/ti/ti_sci_protocol.h
@@ -195,6 +195,18 @@ struct ti_sci_clk_ops {
u64 *current_freq);
};

+/**
+ * struct ti_sci_resource_desc - Description of TI SCI resource instance range.
+ * @start: Start index of the resource.
+ * @num: Number of resources.
+ * @res_map: Bitmap to manage the allocation of these resources.
+ */
+struct ti_sci_resource_desc {
+ u16 start;
+ u16 num;
+ unsigned long *res_map;
+};
+
/**
* struct ti_sci_rm_core_ops - Resource management core operations
* @get_range: Get a range of resources belonging to ti sci host.
@@ -209,15 +221,15 @@ struct ti_sci_clk_ops {
* - dev_id: TISCI device ID.
* - subtype: Resource assignment subtype that is being requested
* from the given device.
- * - range_start: Start index of the resource range
- * - range_end: Number of resources in the range
+ * - desc: Pointer to ti_sci_resource_desc to be updated with the resource
+ * range start index and number of resources
*/
struct ti_sci_rm_core_ops {
int (*get_range)(const struct ti_sci_handle *handle, u32 dev_id,
- u8 subtype, u16 *range_start, u16 *range_num);
+ u8 subtype, struct ti_sci_resource_desc *desc);
int (*get_range_from_shost)(const struct ti_sci_handle *handle,
u32 dev_id, u8 subtype, u8 s_host,
- u16 *range_start, u16 *range_num);
+ struct ti_sci_resource_desc *desc);
};

#define TI_SCI_RESASG_SUBTYPE_IR_OUTPUT 0
@@ -522,18 +534,6 @@ struct ti_sci_handle {

#define TI_SCI_RESOURCE_NULL 0xffff

-/**
- * struct ti_sci_resource_desc - Description of TI SCI resource instance range.
- * @start: Start index of the resource.
- * @num: Number of resources.
- * @res_map: Bitmap to manage the allocation of these resources.
- */
-struct ti_sci_resource_desc {
- u16 start;
- u16 num;
- unsigned long *res_map;
-};
-
/**
* struct ti_sci_resource - Structure representing a resource assigned
* to a device.
--
Peter
Texas Instruments Finland Oy, Porkkalankatu 22, 00180 Helsinki.
Y-tunnus/Business ID: 0615521-4. Kotipaikka/Domicile: Helsinki

\
 
 \ /
  Last update: 2020-09-28 10:35    [W:0.098 / U:4.824 seconds]
©2003-2020 Jasper Spaans|hosted at Digital Ocean and TransIP|Read the blog|Advertise on this site