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mfd: Remove obsolete hwacc implementation for db8500-prmcu
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This patch removes the obsolete hwacc implementation in the
DB8500 PRCMU driver.

Signed-off-by: Mattias Nilsson <mattias.i.nilsson@stericsson.com>
Reviewed-by: Jonas Aberg <jonas.aberg@stericsson.com>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
Signed-off-by: Samuel Ortiz <sameo@linux.intel.com>
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Mattias Nilsson authored and Samuel Ortiz committed Mar 16, 2012
1 parent 829ecbc commit d902d0d
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Showing 2 changed files with 0 additions and 198 deletions.
155 changes: 0 additions & 155 deletions drivers/mfd/db8500-prcmu.c
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Original file line number Diff line number Diff line change
Expand Up @@ -516,35 +516,6 @@ static struct dsiescclk dsiescclk[3] = {
}
};

static struct regulator *hwacc_regulator[NUM_HW_ACC];
static struct regulator *hwacc_ret_regulator[NUM_HW_ACC];

static bool hwacc_enabled[NUM_HW_ACC];
static bool hwacc_ret_enabled[NUM_HW_ACC];

static const char *hwacc_regulator_name[NUM_HW_ACC] = {
[HW_ACC_SVAMMDSP] = "hwacc-sva-mmdsp",
[HW_ACC_SVAPIPE] = "hwacc-sva-pipe",
[HW_ACC_SIAMMDSP] = "hwacc-sia-mmdsp",
[HW_ACC_SIAPIPE] = "hwacc-sia-pipe",
[HW_ACC_SGA] = "hwacc-sga",
[HW_ACC_B2R2] = "hwacc-b2r2",
[HW_ACC_MCDE] = "hwacc-mcde",
[HW_ACC_ESRAM1] = "hwacc-esram1",
[HW_ACC_ESRAM2] = "hwacc-esram2",
[HW_ACC_ESRAM3] = "hwacc-esram3",
[HW_ACC_ESRAM4] = "hwacc-esram4",
};

static const char *hwacc_ret_regulator_name[NUM_HW_ACC] = {
[HW_ACC_SVAMMDSP] = "hwacc-sva-mmdsp-ret",
[HW_ACC_SIAMMDSP] = "hwacc-sia-mmdsp-ret",
[HW_ACC_ESRAM1] = "hwacc-esram1-ret",
[HW_ACC_ESRAM2] = "hwacc-esram2-ret",
[HW_ACC_ESRAM3] = "hwacc-esram3-ret",
[HW_ACC_ESRAM4] = "hwacc-esram4-ret",
};

/*
* Used by MCDE to setup all necessary PRCMU registers
*/
Expand Down Expand Up @@ -1294,132 +1265,6 @@ static int request_pll(u8 clock, bool enable)
return r;
}

/**
* prcmu_set_hwacc - set the power state of a h/w accelerator
* @hwacc_dev: The hardware accelerator (enum hw_acc_dev).
* @state: The new power state (enum hw_acc_state).
*
* This function sets the power state of a hardware accelerator.
* This function should not be called from interrupt context.
*
* NOTE! Deprecated, to be removed when all users switched over to use the
* regulator framework API.
*/
int prcmu_set_hwacc(u16 hwacc_dev, u8 state)
{
int r = 0;
bool ram_retention = false;
bool enable, enable_ret;

/* check argument */
BUG_ON(hwacc_dev >= NUM_HW_ACC);

/* get state of switches */
enable = hwacc_enabled[hwacc_dev];
enable_ret = hwacc_ret_enabled[hwacc_dev];

/* set flag if retention is possible */
switch (hwacc_dev) {
case HW_ACC_SVAMMDSP:
case HW_ACC_SIAMMDSP:
case HW_ACC_ESRAM1:
case HW_ACC_ESRAM2:
case HW_ACC_ESRAM3:
case HW_ACC_ESRAM4:
ram_retention = true;
break;
}

/* check argument */
BUG_ON(state > HW_ON);
BUG_ON(state == HW_OFF_RAMRET && !ram_retention);

/* modify enable flags */
switch (state) {
case HW_OFF:
enable_ret = false;
enable = false;
break;
case HW_ON:
enable = true;
break;
case HW_OFF_RAMRET:
enable_ret = true;
enable = false;
break;
}

/* get regulator (lazy) */
if (hwacc_regulator[hwacc_dev] == NULL) {
hwacc_regulator[hwacc_dev] = regulator_get(NULL,
hwacc_regulator_name[hwacc_dev]);
if (IS_ERR(hwacc_regulator[hwacc_dev])) {
pr_err("prcmu: failed to get supply %s\n",
hwacc_regulator_name[hwacc_dev]);
r = PTR_ERR(hwacc_regulator[hwacc_dev]);
goto out;
}
}

if (ram_retention) {
if (hwacc_ret_regulator[hwacc_dev] == NULL) {
hwacc_ret_regulator[hwacc_dev] = regulator_get(NULL,
hwacc_ret_regulator_name[hwacc_dev]);
if (IS_ERR(hwacc_ret_regulator[hwacc_dev])) {
pr_err("prcmu: failed to get supply %s\n",
hwacc_ret_regulator_name[hwacc_dev]);
r = PTR_ERR(hwacc_ret_regulator[hwacc_dev]);
goto out;
}
}
}

/* set regulators */
if (ram_retention) {
if (enable_ret && !hwacc_ret_enabled[hwacc_dev]) {
r = regulator_enable(hwacc_ret_regulator[hwacc_dev]);
if (r < 0) {
pr_err("prcmu_set_hwacc: ret enable failed\n");
goto out;
}
hwacc_ret_enabled[hwacc_dev] = true;
}
}

if (enable && !hwacc_enabled[hwacc_dev]) {
r = regulator_enable(hwacc_regulator[hwacc_dev]);
if (r < 0) {
pr_err("prcmu_set_hwacc: enable failed\n");
goto out;
}
hwacc_enabled[hwacc_dev] = true;
}

if (!enable && hwacc_enabled[hwacc_dev]) {
r = regulator_disable(hwacc_regulator[hwacc_dev]);
if (r < 0) {
pr_err("prcmu_set_hwacc: disable failed\n");
goto out;
}
hwacc_enabled[hwacc_dev] = false;
}

if (ram_retention) {
if (!enable_ret && hwacc_ret_enabled[hwacc_dev]) {
r = regulator_disable(hwacc_ret_regulator[hwacc_dev]);
if (r < 0) {
pr_err("prcmu_set_hwacc: ret disable failed\n");
goto out;
}
hwacc_ret_enabled[hwacc_dev] = false;
}
}

out:
return r;
}
EXPORT_SYMBOL(prcmu_set_hwacc);

/**
* db8500_prcmu_set_epod - set the state of a EPOD (power domain)
* @epod_id: The EPOD to set
Expand Down
43 changes: 0 additions & 43 deletions include/linux/mfd/db8500-prcmu.h
View file
Original file line number Diff line number Diff line change
Expand Up @@ -438,43 +438,6 @@ enum auto_enable {

/* End of file previously known as prcmu-fw-defs_v1.h */

/**
* enum hw_acc_dev - enum for hw accelerators
* @HW_ACC_SVAMMDSP: for SVAMMDSP
* @HW_ACC_SVAPIPE: for SVAPIPE
* @HW_ACC_SIAMMDSP: for SIAMMDSP
* @HW_ACC_SIAPIPE: for SIAPIPE
* @HW_ACC_SGA: for SGA
* @HW_ACC_B2R2: for B2R2
* @HW_ACC_MCDE: for MCDE
* @HW_ACC_ESRAM1: for ESRAM1
* @HW_ACC_ESRAM2: for ESRAM2
* @HW_ACC_ESRAM3: for ESRAM3
* @HW_ACC_ESRAM4: for ESRAM4
* @NUM_HW_ACC: number of hardware accelerators
*
* Different hw accelerators which can be turned ON/
* OFF or put into retention (MMDSPs and ESRAMs).
* Used with EPOD API.
*
* NOTE! Deprecated, to be removed when all users switched over to use the
* regulator API.
*/
enum hw_acc_dev {
HW_ACC_SVAMMDSP,
HW_ACC_SVAPIPE,
HW_ACC_SIAMMDSP,
HW_ACC_SIAPIPE,
HW_ACC_SGA,
HW_ACC_B2R2,
HW_ACC_MCDE,
HW_ACC_ESRAM1,
HW_ACC_ESRAM2,
HW_ACC_ESRAM3,
HW_ACC_ESRAM4,
NUM_HW_ACC
};

/**
* enum prcmu_power_status - results from set_power_state
* @PRCMU_SLEEP_OK: Sleep went ok
Expand Down Expand Up @@ -552,8 +515,6 @@ bool prcmu_has_arm_maxopp(void);
struct prcmu_fw_version *prcmu_get_fw_version(void);
int prcmu_request_ape_opp_100_voltage(bool enable);
int prcmu_release_usb_wakeup_state(void);
/* NOTE! Use regulator framework instead */
int prcmu_set_hwacc(u16 hw_acc_dev, u8 state);
void prcmu_configure_auto_pm(struct prcmu_auto_pm_config *sleep,
struct prcmu_auto_pm_config *idle);
bool prcmu_is_auto_pm_enabled(void);
Expand Down Expand Up @@ -667,10 +628,6 @@ static inline int db8500_prcmu_get_ddr_opp(void)
return DDR_100_OPP;
}

static inline int prcmu_set_hwacc(u16 hw_acc_dev, u8 state)
{
return 0;
}
static inline void prcmu_configure_auto_pm(struct prcmu_auto_pm_config *sleep,
struct prcmu_auto_pm_config *idle)
{
Expand Down

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