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platform: dce: reworked dce FSM design

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Redesign DCE KMD drive state machine to handle new PM events.

Bug 3583331

Change-Id: I89adcfa2f311a9a1e86b70e14821468203365266
Signed-off-by: Mahesh Kumar <mahkumar@nvidia.com>
Reviewed-on: https://git-master.nvidia.com/r/c/linux-nvidia/+/2673665
Reviewed-by: svc_kernel_abi <svc_kernel_abi@nvidia.com>
Reviewed-by: Arun Swain <arswain@nvidia.com>
GVS: Gerrit_Virtual_Submit
This commit is contained in:
Mahesh Kumar
2022-02-18 03:39:30 +05:30
committed by Laxman Dewangan
parent a6cc70f8d5
commit 28a1cfd1c1
15 changed files with 1081 additions and 425 deletions
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58
drivers/platform/tegra/dce/dce-util-common.c
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@@ -576,6 +576,14 @@ void dce_thread_join(struct dce_thread *thread)
usleep_range(10000, 20000);
};
/**
* dce_get_nxt_pow_of_2 : get next power of 2 number for a given number
*
* @addr : Address of given number
* @nbits : bits in given number
*
* Return : unsigned long next power of 2 value
*/
unsigned long dce_get_nxt_pow_of_2(unsigned long *addr, u8 nbits)
{
u8 l_bit = 0;
@@ -600,3 +608,53 @@ unsigned long dce_get_nxt_pow_of_2(unsigned long *addr, u8 nbits)
return val;
}
/*
* dce_schedule_work : schedule work in global workqueue
*
* @work : dce work to be scheduled
*
* Return : void
*/
void dce_schedule_work(struct dce_work_struct *work)
{
schedule_work(&work->work);
}
/*
* dce_work_handle_fn : handler function for scheduled dce-work
*
* @work : Pointer to the scheduled work
*
* Return : void
*/
void dce_work_handle_fn(struct work_struct *work)
{
struct dce_work_struct *dce_work = container_of(work,
struct dce_work_struct,
work);
if (dce_work->dce_work_fn != NULL)
dce_work->dce_work_fn(dce_work->d);
}
/*
* dce_init_work : Init dce work structure
*
* @d : Pointer to tegra_dce struct.
* @work : Pointer to dce work structure
* @work_fn : worker function to be called
*
* Return : 0 if successful
*/
int dce_init_work(struct tegra_dce *d,
struct dce_work_struct *work,
void (*work_fn)(struct tegra_dce *d))
{
work->d = d;
work->dce_work_fn = work_fn;
INIT_WORK(&work->work, dce_work_handle_fn);
return 0;
}