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firmware: xilinx: Add reset API's
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This Patch Adds reset API's to support release, assert
and status functionalities by using firmware interface.

Signed-off-by: Nava kishore Manne <nava.manne@xilinx.com>
Signed-off-by: Michal Simek <michal.simek@xilinx.com>
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Nava kishore Manne authored and Michal Simek committed Jan 29, 2019
1 parent bfeffd1 commit bc3843d
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Showing 2 changed files with 176 additions and 0 deletions.
40 changes: 40 additions & 0 deletions drivers/firmware/xilinx/zynqmp.c
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Original file line number Diff line number Diff line change
Expand Up @@ -469,6 +469,44 @@ static int zynqmp_pm_ioctl(u32 node_id, u32 ioctl_id, u32 arg1, u32 arg2,
arg1, arg2, out);
}

/**
* zynqmp_pm_reset_assert - Request setting of reset (1 - assert, 0 - release)
* @reset: Reset to be configured
* @assert_flag: Flag stating should reset be asserted (1) or
* released (0)
*
* Return: Returns status, either success or error+reason
*/
static int zynqmp_pm_reset_assert(const enum zynqmp_pm_reset reset,
const enum zynqmp_pm_reset_action assert_flag)
{
return zynqmp_pm_invoke_fn(PM_RESET_ASSERT, reset, assert_flag,
0, 0, NULL);
}

/**
* zynqmp_pm_reset_get_status - Get status of the reset
* @reset: Reset whose status should be returned
* @status: Returned status
*
* Return: Returns status, either success or error+reason
*/
static int zynqmp_pm_reset_get_status(const enum zynqmp_pm_reset reset,
u32 *status)
{
u32 ret_payload[PAYLOAD_ARG_CNT];
int ret;

if (!status)
return -EINVAL;

ret = zynqmp_pm_invoke_fn(PM_RESET_GET_STATUS, reset, 0,
0, 0, ret_payload);
*status = ret_payload[1];

return ret;
}

static const struct zynqmp_eemi_ops eemi_ops = {
.get_api_version = zynqmp_pm_get_api_version,
.query_data = zynqmp_pm_query_data,
Expand All @@ -482,6 +520,8 @@ static const struct zynqmp_eemi_ops eemi_ops = {
.clock_setparent = zynqmp_pm_clock_setparent,
.clock_getparent = zynqmp_pm_clock_getparent,
.ioctl = zynqmp_pm_ioctl,
.reset_assert = zynqmp_pm_reset_assert,
.reset_get_status = zynqmp_pm_reset_get_status,
};

/**
Expand Down
136 changes: 136 additions & 0 deletions include/linux/firmware/xlnx-zynqmp.h
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Original file line number Diff line number Diff line change
Expand Up @@ -34,6 +34,8 @@

enum pm_api_id {
PM_GET_API_VERSION = 1,
PM_RESET_ASSERT = 17,
PM_RESET_GET_STATUS,
PM_IOCTL = 34,
PM_QUERY_DATA,
PM_CLOCK_ENABLE,
Expand Down Expand Up @@ -75,6 +77,137 @@ enum pm_query_id {
PM_QID_CLOCK_GET_NUM_CLOCKS = 12,
};

enum zynqmp_pm_reset_action {
PM_RESET_ACTION_RELEASE,
PM_RESET_ACTION_ASSERT,
PM_RESET_ACTION_PULSE,
};

enum zynqmp_pm_reset {
ZYNQMP_PM_RESET_START = 1000,
ZYNQMP_PM_RESET_PCIE_CFG = ZYNQMP_PM_RESET_START,
ZYNQMP_PM_RESET_PCIE_BRIDGE,
ZYNQMP_PM_RESET_PCIE_CTRL,
ZYNQMP_PM_RESET_DP,
ZYNQMP_PM_RESET_SWDT_CRF,
ZYNQMP_PM_RESET_AFI_FM5,
ZYNQMP_PM_RESET_AFI_FM4,
ZYNQMP_PM_RESET_AFI_FM3,
ZYNQMP_PM_RESET_AFI_FM2,
ZYNQMP_PM_RESET_AFI_FM1,
ZYNQMP_PM_RESET_AFI_FM0,
ZYNQMP_PM_RESET_GDMA,
ZYNQMP_PM_RESET_GPU_PP1,
ZYNQMP_PM_RESET_GPU_PP0,
ZYNQMP_PM_RESET_GPU,
ZYNQMP_PM_RESET_GT,
ZYNQMP_PM_RESET_SATA,
ZYNQMP_PM_RESET_ACPU3_PWRON,
ZYNQMP_PM_RESET_ACPU2_PWRON,
ZYNQMP_PM_RESET_ACPU1_PWRON,
ZYNQMP_PM_RESET_ACPU0_PWRON,
ZYNQMP_PM_RESET_APU_L2,
ZYNQMP_PM_RESET_ACPU3,
ZYNQMP_PM_RESET_ACPU2,
ZYNQMP_PM_RESET_ACPU1,
ZYNQMP_PM_RESET_ACPU0,
ZYNQMP_PM_RESET_DDR,
ZYNQMP_PM_RESET_APM_FPD,
ZYNQMP_PM_RESET_SOFT,
ZYNQMP_PM_RESET_GEM0,
ZYNQMP_PM_RESET_GEM1,
ZYNQMP_PM_RESET_GEM2,
ZYNQMP_PM_RESET_GEM3,
ZYNQMP_PM_RESET_QSPI,
ZYNQMP_PM_RESET_UART0,
ZYNQMP_PM_RESET_UART1,
ZYNQMP_PM_RESET_SPI0,
ZYNQMP_PM_RESET_SPI1,
ZYNQMP_PM_RESET_SDIO0,
ZYNQMP_PM_RESET_SDIO1,
ZYNQMP_PM_RESET_CAN0,
ZYNQMP_PM_RESET_CAN1,
ZYNQMP_PM_RESET_I2C0,
ZYNQMP_PM_RESET_I2C1,
ZYNQMP_PM_RESET_TTC0,
ZYNQMP_PM_RESET_TTC1,
ZYNQMP_PM_RESET_TTC2,
ZYNQMP_PM_RESET_TTC3,
ZYNQMP_PM_RESET_SWDT_CRL,
ZYNQMP_PM_RESET_NAND,
ZYNQMP_PM_RESET_ADMA,
ZYNQMP_PM_RESET_GPIO,
ZYNQMP_PM_RESET_IOU_CC,
ZYNQMP_PM_RESET_TIMESTAMP,
ZYNQMP_PM_RESET_RPU_R50,
ZYNQMP_PM_RESET_RPU_R51,
ZYNQMP_PM_RESET_RPU_AMBA,
ZYNQMP_PM_RESET_OCM,
ZYNQMP_PM_RESET_RPU_PGE,
ZYNQMP_PM_RESET_USB0_CORERESET,
ZYNQMP_PM_RESET_USB1_CORERESET,
ZYNQMP_PM_RESET_USB0_HIBERRESET,
ZYNQMP_PM_RESET_USB1_HIBERRESET,
ZYNQMP_PM_RESET_USB0_APB,
ZYNQMP_PM_RESET_USB1_APB,
ZYNQMP_PM_RESET_IPI,
ZYNQMP_PM_RESET_APM_LPD,
ZYNQMP_PM_RESET_RTC,
ZYNQMP_PM_RESET_SYSMON,
ZYNQMP_PM_RESET_AFI_FM6,
ZYNQMP_PM_RESET_LPD_SWDT,
ZYNQMP_PM_RESET_FPD,
ZYNQMP_PM_RESET_RPU_DBG1,
ZYNQMP_PM_RESET_RPU_DBG0,
ZYNQMP_PM_RESET_DBG_LPD,
ZYNQMP_PM_RESET_DBG_FPD,
ZYNQMP_PM_RESET_APLL,
ZYNQMP_PM_RESET_DPLL,
ZYNQMP_PM_RESET_VPLL,
ZYNQMP_PM_RESET_IOPLL,
ZYNQMP_PM_RESET_RPLL,
ZYNQMP_PM_RESET_GPO3_PL_0,
ZYNQMP_PM_RESET_GPO3_PL_1,
ZYNQMP_PM_RESET_GPO3_PL_2,
ZYNQMP_PM_RESET_GPO3_PL_3,
ZYNQMP_PM_RESET_GPO3_PL_4,
ZYNQMP_PM_RESET_GPO3_PL_5,
ZYNQMP_PM_RESET_GPO3_PL_6,
ZYNQMP_PM_RESET_GPO3_PL_7,
ZYNQMP_PM_RESET_GPO3_PL_8,
ZYNQMP_PM_RESET_GPO3_PL_9,
ZYNQMP_PM_RESET_GPO3_PL_10,
ZYNQMP_PM_RESET_GPO3_PL_11,
ZYNQMP_PM_RESET_GPO3_PL_12,
ZYNQMP_PM_RESET_GPO3_PL_13,
ZYNQMP_PM_RESET_GPO3_PL_14,
ZYNQMP_PM_RESET_GPO3_PL_15,
ZYNQMP_PM_RESET_GPO3_PL_16,
ZYNQMP_PM_RESET_GPO3_PL_17,
ZYNQMP_PM_RESET_GPO3_PL_18,
ZYNQMP_PM_RESET_GPO3_PL_19,
ZYNQMP_PM_RESET_GPO3_PL_20,
ZYNQMP_PM_RESET_GPO3_PL_21,
ZYNQMP_PM_RESET_GPO3_PL_22,
ZYNQMP_PM_RESET_GPO3_PL_23,
ZYNQMP_PM_RESET_GPO3_PL_24,
ZYNQMP_PM_RESET_GPO3_PL_25,
ZYNQMP_PM_RESET_GPO3_PL_26,
ZYNQMP_PM_RESET_GPO3_PL_27,
ZYNQMP_PM_RESET_GPO3_PL_28,
ZYNQMP_PM_RESET_GPO3_PL_29,
ZYNQMP_PM_RESET_GPO3_PL_30,
ZYNQMP_PM_RESET_GPO3_PL_31,
ZYNQMP_PM_RESET_RPU_LS,
ZYNQMP_PM_RESET_PS_ONLY,
ZYNQMP_PM_RESET_PL,
ZYNQMP_PM_RESET_PS_PL0,
ZYNQMP_PM_RESET_PS_PL1,
ZYNQMP_PM_RESET_PS_PL2,
ZYNQMP_PM_RESET_PS_PL3,
ZYNQMP_PM_RESET_END = ZYNQMP_PM_RESET_PS_PL3
};

/**
* struct zynqmp_pm_query_data - PM query data
* @qid: query ID
Expand Down Expand Up @@ -102,6 +235,9 @@ struct zynqmp_eemi_ops {
int (*clock_setparent)(u32 clock_id, u32 parent_id);
int (*clock_getparent)(u32 clock_id, u32 *parent_id);
int (*ioctl)(u32 node_id, u32 ioctl_id, u32 arg1, u32 arg2, u32 *out);
int (*reset_assert)(const enum zynqmp_pm_reset reset,
const enum zynqmp_pm_reset_action assert_flag);
int (*reset_get_status)(const enum zynqmp_pm_reset reset, u32 *status);
};

#if IS_REACHABLE(CONFIG_ARCH_ZYNQMP)
Expand Down

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