drivers/dma/ti/k3-udma-private.c

   1 // SPDX-License-Identifier: GPL-2.0
   2 /*
   3  *  Copyright (C) 2019 Texas Instruments Incorporated - http://www.ti.com
   4  *  Author: Peter Ujfalusi <peter.ujfalusi@ti.com>
   5  */
   6
   7 int xudma_navss_psil_pair(struct udma_dev *ud, u32 src_thread, u32 dst_thread)
   8 {
   9         return navss_psil_pair(ud, src_thread, dst_thread);
  10 }
  11 EXPORT_SYMBOL(xudma_navss_psil_pair);
  12
  13 int xudma_navss_psil_unpair(struct udma_dev *ud, u32 src_thread, u32 dst_thread)
  14 {
  15         return navss_psil_unpair(ud, src_thread, dst_thread);
  16 }
  17 EXPORT_SYMBOL(xudma_navss_psil_unpair);
  18
  19 struct udma_dev *of_xudma_dev_get(struct device_node *np, const char *property)
  20 {
  21         struct device_node *udma_node = np;
  22         struct platform_device *pdev;
  23         struct udma_dev *ud;
  24
  25         if (property) {
  26                 udma_node = of_parse_phandle(np, property, 0);
  27                 if (!udma_node) {
  28                         pr_err("UDMA node is not found\n");
  29                         return ERR_PTR(-ENODEV);
  30                 }
  31         }
  32
  33         pdev = of_find_device_by_node(udma_node);
  34         if (!pdev) {
  35                 pr_debug("UDMA device not found\n");
  36                 return ERR_PTR(-EPROBE_DEFER);
  37         }
  38
  39         if (np != udma_node)
  40                 of_node_put(udma_node);
  41
  42         ud = platform_get_drvdata(pdev);
  43         if (!ud) {
  44                 pr_debug("UDMA has not been probed\n");
  45                 return ERR_PTR(-EPROBE_DEFER);
  46         }
  47
  48         return ud;
  49 }
  50 EXPORT_SYMBOL(of_xudma_dev_get);
  51
  52 u32 xudma_dev_get_psil_base(struct udma_dev *ud)
  53 {
  54         return ud->psil_base;
  55 }
  56 EXPORT_SYMBOL(xudma_dev_get_psil_base);
  57
  58 struct udma_tisci_rm *xudma_dev_get_tisci_rm(struct udma_dev *ud)
  59 {
  60         return &ud->tisci_rm;
  61 }
  62 EXPORT_SYMBOL(xudma_dev_get_tisci_rm);
  63
  64 int xudma_alloc_gp_rflow_range(struct udma_dev *ud, int from, int cnt)
  65 {
  66         return __udma_alloc_gp_rflow_range(ud, from, cnt);
  67 }
  68 EXPORT_SYMBOL(xudma_alloc_gp_rflow_range);
  69
  70 int xudma_free_gp_rflow_range(struct udma_dev *ud, int from, int cnt)
  71 {
  72         return __udma_free_gp_rflow_range(ud, from, cnt);
  73 }
  74 EXPORT_SYMBOL(xudma_free_gp_rflow_range);
  75
  76 bool xudma_rflow_is_gp(struct udma_dev *ud, int id)
  77 {
  78         return !test_bit(id, ud->rflow_gp_map);
  79 }
  80 EXPORT_SYMBOL(xudma_rflow_is_gp);
  81
  82 #define XUDMA_GET_PUT_RESOURCE(res)                                     \
  83 struct udma_##res *xudma_##res##_get(struct udma_dev *ud, int id)       \
  84 {                                                                       \
  85         return __udma_reserve_##res(ud, false, id);                     \
  86 }                                                                       \
  87 EXPORT_SYMBOL(xudma_##res##_get);                                       \
  88                                                                         \
  89 void xudma_##res##_put(struct udma_dev *ud, struct udma_##res *p)       \
  90 {                                                                       \
  91         clear_bit(p->id, ud->res##_map);                                \
  92 }                                                                       \
  93 EXPORT_SYMBOL(xudma_##res##_put)
  94 XUDMA_GET_PUT_RESOURCE(tchan);
  95 XUDMA_GET_PUT_RESOURCE(rchan);
  96
  97 struct udma_rflow *xudma_rflow_get(struct udma_dev *ud, int id)
  98 {
  99         return __udma_get_rflow(ud, id);
 100 }
 101 EXPORT_SYMBOL(xudma_rflow_get);
 102
 103 void xudma_rflow_put(struct udma_dev *ud, struct udma_rflow *p)
 104 {
 105         __udma_put_rflow(ud, p);
 106 }
 107 EXPORT_SYMBOL(xudma_rflow_put);
 108
 109 #define XUDMA_GET_RESOURCE_ID(res)                                      \
 110 int xudma_##res##_get_id(struct udma_##res *p)                          \
 111 {                                                                       \
 112         return p->id;                                                   \
 113 }                                                                       \
 114 EXPORT_SYMBOL(xudma_##res##_get_id)
 115 XUDMA_GET_RESOURCE_ID(tchan);
 116 XUDMA_GET_RESOURCE_ID(rchan);
 117 XUDMA_GET_RESOURCE_ID(rflow);
 118
 119 /* Exported register access functions */
 120 #define XUDMA_RT_IO_FUNCTIONS(res)                                      \
 121 u32 xudma_##res##rt_read(struct udma_##res *p, int reg)                 \
 122 {                                                                       \
 123         return udma_##res##rt_read(p, reg);                             \
 124 }                                                                       \
 125 EXPORT_SYMBOL(xudma_##res##rt_read);                                    \
 126                                                                         \
 127 void xudma_##res##rt_write(struct udma_##res *p, int reg, u32 val)      \
 128 {                                                                       \
 129         udma_##res##rt_write(p, reg, val);                              \
 130 }                                                                       \
 131 EXPORT_SYMBOL(xudma_##res##rt_write)
 132 XUDMA_RT_IO_FUNCTIONS(tchan);
 133 XUDMA_RT_IO_FUNCTIONS(rchan);