firmware: xilinx: Add OSPI Mux selection support

Add OSPI Mux selection API support to select the AXI interface to OSPI.

Signed-off-by: Sai Krishna Potthuri <lakshmi.sai.krishna.potthuri@xilinx.com>
Link: https://lore.kernel.org/r/1632478031-12242-2-git-send-email-lakshmi.sai.krishna.potthuri@xilinx.com
Signed-off-by: Mark Brown <broonie@kernel.org>

diff --git a/drivers/firmware/xilinx/zynqmp.c b/drivers/firmware/xilinx/zynqmp.c
index a3cadbaf3cba772e06cfb25a07f74e47c54ac6ac..1436e03ff4f7d9aad2d3b6334269e6c0c8a451f2 100644 (file)
--- a/drivers/firmware/xilinx/zynqmp.c
+++ b/drivers/firmware/xilinx/zynqmp.c
@@ -647,6 +647,23 @@ int zynqmp_pm_sd_dll_reset(u32 node_id, u32 type)
 }
 EXPORT_SYMBOL_GPL(zynqmp_pm_sd_dll_reset);
 
+/**
+ * zynqmp_pm_ospi_mux_select() - OSPI Mux selection
+ *
+ * @dev_id:    Device Id of the OSPI device.
+ * @select:    OSPI Mux select value.
+ *
+ * This function select the OSPI Mux.
+ *
+ * Return:     Returns status, either success or error+reason
+ */
+int zynqmp_pm_ospi_mux_select(u32 dev_id, u32 select)
+{
+       return zynqmp_pm_invoke_fn(PM_IOCTL, dev_id, IOCTL_OSPI_MUX_SELECT,
+                                  select, 0, NULL);
+}
+EXPORT_SYMBOL_GPL(zynqmp_pm_ospi_mux_select);
+
 /**
  * zynqmp_pm_write_ggs() - PM API for writing global general storage (ggs)
  * @index:     GGS register index

diff --git a/include/linux/firmware/xlnx-zynqmp.h b/include/linux/firmware/xlnx-zynqmp.h
index 56b426fe020ccaa21641143f94343dde6dedb304..4c70a6e2141e9dbcfa32d0b3dc18e6fccb0f1af5 100644 (file)
--- a/include/linux/firmware/xlnx-zynqmp.h
+++ b/include/linux/firmware/xlnx-zynqmp.h
@@ -123,6 +123,7 @@ enum pm_ioctl_id {
        IOCTL_READ_PGGS = 15,
        /* Set healthy bit value */
        IOCTL_SET_BOOT_HEALTH_STATUS = 17,
+       IOCTL_OSPI_MUX_SELECT = 21,
 };
 
 enum pm_query_id {
@@ -351,6 +352,11 @@ enum zynqmp_pm_shutdown_subtype {
        ZYNQMP_PM_SHUTDOWN_SUBTYPE_SYSTEM = 2,
 };
 
+enum ospi_mux_select_type {
+       PM_OSPI_MUX_SEL_DMA = 0,
+       PM_OSPI_MUX_SEL_LINEAR = 1,
+};
+
 /**
  * struct zynqmp_pm_query_data - PM query data
  * @qid:       query ID
@@ -387,6 +393,7 @@ int zynqmp_pm_set_pll_frac_data(u32 clk_id, u32 data);
 int zynqmp_pm_get_pll_frac_data(u32 clk_id, u32 *data);
 int zynqmp_pm_set_sd_tapdelay(u32 node_id, u32 type, u32 value);
 int zynqmp_pm_sd_dll_reset(u32 node_id, u32 type);
+int zynqmp_pm_ospi_mux_select(u32 dev_id, u32 select);
 int zynqmp_pm_reset_assert(const enum zynqmp_pm_reset reset,
                           const enum zynqmp_pm_reset_action assert_flag);
 int zynqmp_pm_reset_get_status(const enum zynqmp_pm_reset reset, u32 *status);
@@ -508,6 +515,11 @@ static inline int zynqmp_pm_sd_dll_reset(u32 node_id, u32 type)
        return -ENODEV;
 }
 
+static inline int zynqmp_pm_ospi_mux_select(u32 dev_id, u32 select)
+{
+       return -ENODEV;
+}
+
 static inline int zynqmp_pm_reset_assert(const enum zynqmp_pm_reset reset,
                                         const enum zynqmp_pm_reset_action assert_flag)
 {