mirror of https://gitee.com/openkylin/linux.git
firmware: xilinx: Add APIs to read/write GGS/PGGS registers
Add APIs to read/write PGGS and GGS registers. Signed-off-by: Rajan Vaja <rajan.vaja@xilinx.com> Signed-off-by: Jolly Shah <jolly.shah@xilinx.com> Link: https://lore.kernel.org/r/1587761887-4279-22-git-send-email-jolly.shah@xilinx.com Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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@ -617,6 +617,72 @@ int zynqmp_pm_sd_dll_reset(u32 node_id, u32 type)
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}
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EXPORT_SYMBOL_GPL(zynqmp_pm_sd_dll_reset);
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/**
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* zynqmp_pm_write_ggs() - PM API for writing global general storage (ggs)
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* @index GGS register index
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* @value Register value to be written
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*
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* This function writes value to GGS register.
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*
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* @return Returns status, either success or error+reason
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*/
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int zynqmp_pm_write_ggs(u32 index, u32 value)
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{
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return zynqmp_pm_invoke_fn(PM_IOCTL, 0, IOCTL_WRITE_GGS,
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index, value, NULL);
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}
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EXPORT_SYMBOL_GPL(zynqmp_pm_write_ggs);
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/**
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* zynqmp_pm_write_ggs() - PM API for reading global general storage (ggs)
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* @index GGS register index
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* @value Register value to be written
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*
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* This function returns GGS register value.
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*
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* @return Returns status, either success or error+reason
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*/
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int zynqmp_pm_read_ggs(u32 index, u32 *value)
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{
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return zynqmp_pm_invoke_fn(PM_IOCTL, 0, IOCTL_READ_GGS,
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index, 0, value);
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}
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EXPORT_SYMBOL_GPL(zynqmp_pm_read_ggs);
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/**
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* zynqmp_pm_write_pggs() - PM API for writing persistent global general
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* storage (pggs)
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* @index PGGS register index
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* @value Register value to be written
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*
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* This function writes value to PGGS register.
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*
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* @return Returns status, either success or error+reason
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*/
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int zynqmp_pm_write_pggs(u32 index, u32 value)
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{
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return zynqmp_pm_invoke_fn(PM_IOCTL, 0, IOCTL_WRITE_PGGS, index, value,
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NULL);
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}
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EXPORT_SYMBOL_GPL(zynqmp_pm_write_pggs);
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/**
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* zynqmp_pm_write_pggs() - PM API for reading persistent global general
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* storage (pggs)
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* @index PGGS register index
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* @value Register value to be written
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*
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* This function returns PGGS register value.
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*
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* @return Returns status, either success or error+reason
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*/
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int zynqmp_pm_read_pggs(u32 index, u32 *value)
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{
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return zynqmp_pm_invoke_fn(PM_IOCTL, 0, IOCTL_READ_PGGS, index, 0,
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value);
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}
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EXPORT_SYMBOL_GPL(zynqmp_pm_read_pggs);
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/**
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* zynqmp_pm_reset_assert - Request setting of reset (1 - assert, 0 - release)
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* @reset: Reset to be configured
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@ -107,6 +107,10 @@ enum pm_ioctl_id {
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IOCTL_GET_PLL_FRAC_MODE,
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IOCTL_SET_PLL_FRAC_DATA,
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IOCTL_GET_PLL_FRAC_DATA,
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IOCTL_WRITE_GGS = 12,
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IOCTL_READ_GGS = 13,
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IOCTL_WRITE_PGGS = 14,
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IOCTL_READ_PGGS = 15,
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};
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enum pm_query_id {
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@ -330,6 +334,10 @@ int zynqmp_pm_set_requirement(const u32 node, const u32 capabilities,
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int zynqmp_pm_aes_engine(const u64 address, u32 *out);
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int zynqmp_pm_fpga_load(const u64 address, const u32 size, const u32 flags);
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int zynqmp_pm_fpga_get_status(u32 *value);
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int zynqmp_pm_write_ggs(u32 index, u32 value);
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int zynqmp_pm_read_ggs(u32 index, u32 *value);
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int zynqmp_pm_write_pggs(u32 index, u32 value);
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int zynqmp_pm_read_pggs(u32 index, u32 *value);
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#else
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static inline struct zynqmp_eemi_ops *zynqmp_pm_get_eemi_ops(void)
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{
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@ -456,6 +464,22 @@ static inline int zynqmp_pm_fpga_get_status(u32 *value)
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{
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return -ENODEV;
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}
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static inline int zynqmp_pm_write_ggs(u32 index, u32 value)
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{
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return -ENODEV;
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}
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static inline int zynqmp_pm_read_ggs(u32 index, u32 *value)
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{
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return -ENODEV;
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}
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static inline int zynqmp_pm_write_pggs(u32 index, u32 value)
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{
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return -ENODEV;
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}
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static inline int zynqmp_pm_read_pggs(u32 index, u32 *value)
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{
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return -ENODEV;
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}
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#endif
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#endif /* __FIRMWARE_ZYNQMP_H__ */
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