LXR uboot/arch/arm/mach-keystone/include/mach/mux-k2g.h

   1/* SPDX-License-Identifier: GPL-2.0+ */
   2/*
   3 * K2G: Pinmux configuration
   4 *
   5 * (C) Copyright 2015
   6 *     Texas Instruments Incorporated, <www.ti.com>
   7 */
   8
   9#ifndef __ASM_ARCH_MUX_K2G_H
  10#define __ASM_ARCH_MUX_K2G_H
  11
  12#include <common.h>
  13#include <asm/io.h>
  14
  15#define K2G_PADCFG_REG  (KS2_DEVICE_STATE_CTRL_BASE + 0x1000)
  16
  17/*
  18 * 20:19 - buffer class RW fixed
  19 * 18    - rxactive (Input enabled for the pad ) 0 - Di; 1 - En;
  20 * 17    - pulltypesel (0 - PULLDOWN; 1 - PULLUP);
  21 * 16    - pulluden (0 - PULLUP/DOWN EN; 1 - DI);
  22 * 3:0   - muxmode (available modes 0:5)
  23 */
  24
  25#define PIN_IEN (1 << 18) /* pin input enabled */
  26#define PIN_PDIS        (1 << 16) /* pull up/down disabled */
  27#define PIN_PTU (1 << 17) /* pull up */
  28#define PIN_PTD (0 << 17) /* pull down */
  29
  30#define BUFFER_CLASS_B  (0 << 19)
  31#define BUFFER_CLASS_C  (1 << 19)
  32#define BUFFER_CLASS_D  (2 << 19)
  33#define BUFFER_CLASS_E  (3 << 19)
  34
  35#define MODE(m) ((m) & 0x7)
  36#define MAX_PIN_N       260
  37
  38#define MUX_CFG(value, index)  \
  39        __raw_writel(\
  40                     (value) | \
  41                     (__raw_readl(K2G_PADCFG_REG + (index << 2)) & \
  42                      (0x3 << 19)),\
  43                     (K2G_PADCFG_REG + (index << 2))\
  44                    );
  45
  46struct pin_cfg {
  47        int     reg_inx;
  48        u32     val;
  49};
  50
  51static inline void configure_pin_mux(struct pin_cfg *pin_mux)
  52{
  53        if (!pin_mux)
  54                return;
  55
  56        while ((pin_mux->reg_inx >= 0) && (pin_mux->reg_inx < MAX_PIN_N)) {
  57                MUX_CFG(pin_mux->val, pin_mux->reg_inx);
  58                pin_mux++;
  59        }
  60}
  61
  62#endif /* __ASM_ARCH_MUX_K2G_H */
  63