478 lines
12 KiB
C
478 lines
12 KiB
C
/*
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* Copyright 2015 Advanced Micro Devices, Inc.
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*
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* Permission is hereby granted, free of charge, to any person obtaining a
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* copy of this software and associated documentation files (the "Software"),
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* to deal in the Software without restriction, including without limitation
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* the rights to use, copy, modify, merge, publish, distribute, sublicense,
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* and/or sell copies of the Software, and to permit persons to whom the
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* Software is furnished to do so, subject to the following conditions:
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*
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* The above copyright notice and this permission notice shall be included in
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* all copies or substantial portions of the Software.
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*
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
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* THE COPYRIGHT HOLDER(S) OR AUTHOR(S) BE LIABLE FOR ANY CLAIM, DAMAGES OR
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* OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
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* ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
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* OTHER DEALINGS IN THE SOFTWARE.
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*
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* Authors: AMD
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*
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*/
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#include <linux/irqdomain.h>
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#include <linux/pm_domain.h>
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#include <linux/platform_device.h>
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#include <sound/designware_i2s.h>
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#include <sound/pcm.h>
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#include "amdgpu.h"
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#include "atom.h"
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#include "amdgpu_acp.h"
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#include "acp_gfx_if.h"
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#define ACP_TILE_ON_MASK 0x03
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#define ACP_TILE_OFF_MASK 0x02
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#define ACP_TILE_ON_RETAIN_REG_MASK 0x1f
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#define ACP_TILE_OFF_RETAIN_REG_MASK 0x20
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#define ACP_TILE_P1_MASK 0x3e
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#define ACP_TILE_P2_MASK 0x3d
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#define ACP_TILE_DSP0_MASK 0x3b
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#define ACP_TILE_DSP1_MASK 0x37
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#define ACP_TILE_DSP2_MASK 0x2f
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#define ACP_DMA_REGS_END 0x146c0
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#define ACP_I2S_PLAY_REGS_START 0x14840
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#define ACP_I2S_PLAY_REGS_END 0x148b4
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#define ACP_I2S_CAP_REGS_START 0x148b8
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#define ACP_I2S_CAP_REGS_END 0x1496c
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#define ACP_I2S_COMP1_CAP_REG_OFFSET 0xac
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#define ACP_I2S_COMP2_CAP_REG_OFFSET 0xa8
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#define ACP_I2S_COMP1_PLAY_REG_OFFSET 0x6c
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#define ACP_I2S_COMP2_PLAY_REG_OFFSET 0x68
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#define mmACP_PGFSM_RETAIN_REG 0x51c9
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#define mmACP_PGFSM_CONFIG_REG 0x51ca
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#define mmACP_PGFSM_READ_REG_0 0x51cc
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#define mmACP_MEM_SHUT_DOWN_REQ_LO 0x51f8
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#define mmACP_MEM_SHUT_DOWN_REQ_HI 0x51f9
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#define mmACP_MEM_SHUT_DOWN_STS_LO 0x51fa
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#define mmACP_MEM_SHUT_DOWN_STS_HI 0x51fb
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#define ACP_TIMEOUT_LOOP 0x000000FF
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#define ACP_DEVS 3
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#define ACP_SRC_ID 162
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enum {
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ACP_TILE_P1 = 0,
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ACP_TILE_P2,
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ACP_TILE_DSP0,
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ACP_TILE_DSP1,
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ACP_TILE_DSP2,
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};
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static int acp_sw_init(void *handle)
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{
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struct amdgpu_device *adev = (struct amdgpu_device *)handle;
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adev->acp.parent = adev->dev;
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adev->acp.cgs_device =
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amdgpu_cgs_create_device(adev);
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if (!adev->acp.cgs_device)
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return -EINVAL;
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return 0;
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}
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static int acp_sw_fini(void *handle)
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{
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struct amdgpu_device *adev = (struct amdgpu_device *)handle;
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if (adev->acp.cgs_device)
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amdgpu_cgs_destroy_device(adev->acp.cgs_device);
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return 0;
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}
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/* power off a tile/block within ACP */
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static int acp_suspend_tile(void *cgs_dev, int tile)
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{
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u32 val = 0;
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u32 count = 0;
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if ((tile < ACP_TILE_P1) || (tile > ACP_TILE_DSP2)) {
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pr_err("Invalid ACP tile : %d to suspend\n", tile);
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return -1;
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}
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val = cgs_read_register(cgs_dev, mmACP_PGFSM_READ_REG_0 + tile);
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val &= ACP_TILE_ON_MASK;
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if (val == 0x0) {
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val = cgs_read_register(cgs_dev, mmACP_PGFSM_RETAIN_REG);
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val = val | (1 << tile);
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cgs_write_register(cgs_dev, mmACP_PGFSM_RETAIN_REG, val);
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cgs_write_register(cgs_dev, mmACP_PGFSM_CONFIG_REG,
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0x500 + tile);
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count = ACP_TIMEOUT_LOOP;
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while (true) {
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val = cgs_read_register(cgs_dev, mmACP_PGFSM_READ_REG_0
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+ tile);
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val = val & ACP_TILE_ON_MASK;
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if (val == ACP_TILE_OFF_MASK)
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break;
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if (--count == 0) {
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pr_err("Timeout reading ACP PGFSM status\n");
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return -ETIMEDOUT;
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}
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udelay(100);
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}
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val = cgs_read_register(cgs_dev, mmACP_PGFSM_RETAIN_REG);
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val |= ACP_TILE_OFF_RETAIN_REG_MASK;
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cgs_write_register(cgs_dev, mmACP_PGFSM_RETAIN_REG, val);
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}
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return 0;
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}
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/* power on a tile/block within ACP */
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static int acp_resume_tile(void *cgs_dev, int tile)
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{
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u32 val = 0;
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u32 count = 0;
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if ((tile < ACP_TILE_P1) || (tile > ACP_TILE_DSP2)) {
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pr_err("Invalid ACP tile to resume\n");
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return -1;
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}
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val = cgs_read_register(cgs_dev, mmACP_PGFSM_READ_REG_0 + tile);
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val = val & ACP_TILE_ON_MASK;
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if (val != 0x0) {
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cgs_write_register(cgs_dev, mmACP_PGFSM_CONFIG_REG,
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0x600 + tile);
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count = ACP_TIMEOUT_LOOP;
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while (true) {
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val = cgs_read_register(cgs_dev, mmACP_PGFSM_READ_REG_0
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+ tile);
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val = val & ACP_TILE_ON_MASK;
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if (val == 0x0)
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break;
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if (--count == 0) {
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pr_err("Timeout reading ACP PGFSM status\n");
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return -ETIMEDOUT;
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}
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udelay(100);
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}
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val = cgs_read_register(cgs_dev, mmACP_PGFSM_RETAIN_REG);
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if (tile == ACP_TILE_P1)
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val = val & (ACP_TILE_P1_MASK);
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else if (tile == ACP_TILE_P2)
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val = val & (ACP_TILE_P2_MASK);
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cgs_write_register(cgs_dev, mmACP_PGFSM_RETAIN_REG, val);
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}
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return 0;
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}
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struct acp_pm_domain {
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void *cgs_dev;
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struct generic_pm_domain gpd;
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};
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static int acp_poweroff(struct generic_pm_domain *genpd)
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{
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int i, ret;
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struct acp_pm_domain *apd;
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apd = container_of(genpd, struct acp_pm_domain, gpd);
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if (apd != NULL) {
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/* Donot return abruptly if any of power tile fails to suspend.
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* Log it and continue powering off other tile
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*/
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for (i = 4; i >= 0 ; i--) {
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ret = acp_suspend_tile(apd->cgs_dev, ACP_TILE_P1 + i);
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if (ret)
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pr_err("ACP tile %d tile suspend failed\n", i);
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}
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}
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return 0;
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}
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static int acp_poweron(struct generic_pm_domain *genpd)
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{
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int i, ret;
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struct acp_pm_domain *apd;
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apd = container_of(genpd, struct acp_pm_domain, gpd);
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if (apd != NULL) {
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for (i = 0; i < 2; i++) {
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ret = acp_resume_tile(apd->cgs_dev, ACP_TILE_P1 + i);
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if (ret) {
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pr_err("ACP tile %d resume failed\n", i);
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break;
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}
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}
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/* Disable DSPs which are not going to be used */
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for (i = 0; i < 3; i++) {
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ret = acp_suspend_tile(apd->cgs_dev, ACP_TILE_DSP0 + i);
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/* Continue suspending other DSP, even if one fails */
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if (ret)
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pr_err("ACP DSP %d suspend failed\n", i);
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}
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}
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return 0;
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}
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static struct device *get_mfd_cell_dev(const char *device_name, int r)
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{
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char auto_dev_name[25];
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struct device *dev;
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snprintf(auto_dev_name, sizeof(auto_dev_name),
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"%s.%d.auto", device_name, r);
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dev = bus_find_device_by_name(&platform_bus_type, NULL, auto_dev_name);
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dev_info(dev, "device %s added to pm domain\n", auto_dev_name);
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return dev;
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}
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/**
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* acp_hw_init - start and test ACP block
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*
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* @adev: amdgpu_device pointer
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*
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*/
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static int acp_hw_init(void *handle)
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{
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int r, i;
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uint64_t acp_base;
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struct device *dev;
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struct i2s_platform_data *i2s_pdata;
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struct amdgpu_device *adev = (struct amdgpu_device *)handle;
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const struct amdgpu_ip_block_version *ip_version =
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amdgpu_get_ip_block(adev, AMD_IP_BLOCK_TYPE_ACP);
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if (!ip_version)
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return -EINVAL;
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r = amd_acp_hw_init(adev->acp.cgs_device,
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ip_version->major, ip_version->minor);
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/* -ENODEV means board uses AZ rather than ACP */
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if (r == -ENODEV)
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return 0;
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else if (r)
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return r;
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r = cgs_get_pci_resource(adev->acp.cgs_device, CGS_RESOURCE_TYPE_MMIO,
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0x5289, 0, &acp_base);
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if (r == -ENODEV)
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return 0;
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else if (r)
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return r;
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adev->acp.acp_genpd = kzalloc(sizeof(struct acp_pm_domain), GFP_KERNEL);
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if (adev->acp.acp_genpd == NULL)
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return -ENOMEM;
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adev->acp.acp_genpd->gpd.name = "ACP_AUDIO";
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adev->acp.acp_genpd->gpd.power_off = acp_poweroff;
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adev->acp.acp_genpd->gpd.power_on = acp_poweron;
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adev->acp.acp_genpd->cgs_dev = adev->acp.cgs_device;
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pm_genpd_init(&adev->acp.acp_genpd->gpd, NULL, false);
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adev->acp.acp_cell = kzalloc(sizeof(struct mfd_cell) * ACP_DEVS,
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GFP_KERNEL);
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if (adev->acp.acp_cell == NULL)
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return -ENOMEM;
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adev->acp.acp_res = kzalloc(sizeof(struct resource) * 4, GFP_KERNEL);
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if (adev->acp.acp_res == NULL) {
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kfree(adev->acp.acp_cell);
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return -ENOMEM;
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}
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i2s_pdata = kzalloc(sizeof(struct i2s_platform_data) * 2, GFP_KERNEL);
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if (i2s_pdata == NULL) {
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kfree(adev->acp.acp_res);
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kfree(adev->acp.acp_cell);
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return -ENOMEM;
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}
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i2s_pdata[0].quirks = DW_I2S_QUIRK_COMP_REG_OFFSET;
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i2s_pdata[0].cap = DWC_I2S_PLAY;
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i2s_pdata[0].snd_rates = SNDRV_PCM_RATE_8000_96000;
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i2s_pdata[0].i2s_reg_comp1 = ACP_I2S_COMP1_PLAY_REG_OFFSET;
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i2s_pdata[0].i2s_reg_comp2 = ACP_I2S_COMP2_PLAY_REG_OFFSET;
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i2s_pdata[1].quirks = DW_I2S_QUIRK_COMP_REG_OFFSET |
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DW_I2S_QUIRK_COMP_PARAM1;
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i2s_pdata[1].cap = DWC_I2S_RECORD;
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i2s_pdata[1].snd_rates = SNDRV_PCM_RATE_8000_96000;
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i2s_pdata[1].i2s_reg_comp1 = ACP_I2S_COMP1_CAP_REG_OFFSET;
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i2s_pdata[1].i2s_reg_comp2 = ACP_I2S_COMP2_CAP_REG_OFFSET;
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adev->acp.acp_res[0].name = "acp2x_dma";
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adev->acp.acp_res[0].flags = IORESOURCE_MEM;
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adev->acp.acp_res[0].start = acp_base;
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adev->acp.acp_res[0].end = acp_base + ACP_DMA_REGS_END;
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adev->acp.acp_res[1].name = "acp2x_dw_i2s_play";
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adev->acp.acp_res[1].flags = IORESOURCE_MEM;
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adev->acp.acp_res[1].start = acp_base + ACP_I2S_PLAY_REGS_START;
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adev->acp.acp_res[1].end = acp_base + ACP_I2S_PLAY_REGS_END;
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adev->acp.acp_res[2].name = "acp2x_dw_i2s_cap";
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adev->acp.acp_res[2].flags = IORESOURCE_MEM;
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adev->acp.acp_res[2].start = acp_base + ACP_I2S_CAP_REGS_START;
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adev->acp.acp_res[2].end = acp_base + ACP_I2S_CAP_REGS_END;
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adev->acp.acp_res[3].name = "acp2x_dma_irq";
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adev->acp.acp_res[3].flags = IORESOURCE_IRQ;
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adev->acp.acp_res[3].start = amdgpu_irq_create_mapping(adev, 162);
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adev->acp.acp_res[3].end = adev->acp.acp_res[3].start;
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adev->acp.acp_cell[0].name = "acp_audio_dma";
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adev->acp.acp_cell[0].num_resources = 4;
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adev->acp.acp_cell[0].resources = &adev->acp.acp_res[0];
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adev->acp.acp_cell[1].name = "designware-i2s";
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adev->acp.acp_cell[1].num_resources = 1;
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adev->acp.acp_cell[1].resources = &adev->acp.acp_res[1];
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adev->acp.acp_cell[1].platform_data = &i2s_pdata[0];
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adev->acp.acp_cell[1].pdata_size = sizeof(struct i2s_platform_data);
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adev->acp.acp_cell[2].name = "designware-i2s";
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adev->acp.acp_cell[2].num_resources = 1;
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adev->acp.acp_cell[2].resources = &adev->acp.acp_res[2];
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adev->acp.acp_cell[2].platform_data = &i2s_pdata[1];
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adev->acp.acp_cell[2].pdata_size = sizeof(struct i2s_platform_data);
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r = mfd_add_hotplug_devices(adev->acp.parent, adev->acp.acp_cell,
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ACP_DEVS);
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if (r)
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return r;
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for (i = 0; i < ACP_DEVS ; i++) {
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dev = get_mfd_cell_dev(adev->acp.acp_cell[i].name, i);
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r = pm_genpd_add_device(&adev->acp.acp_genpd->gpd, dev);
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if (r) {
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dev_err(dev, "Failed to add dev to genpd\n");
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return r;
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}
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}
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return 0;
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}
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/**
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* acp_hw_fini - stop the hardware block
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*
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* @adev: amdgpu_device pointer
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*
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*/
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static int acp_hw_fini(void *handle)
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{
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int i, ret;
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struct device *dev;
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struct amdgpu_device *adev = (struct amdgpu_device *)handle;
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/* return early if no ACP */
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if (!adev->acp.acp_genpd)
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return 0;
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for (i = 0; i < ACP_DEVS ; i++) {
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dev = get_mfd_cell_dev(adev->acp.acp_cell[i].name, i);
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ret = pm_genpd_remove_device(&adev->acp.acp_genpd->gpd, dev);
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/* If removal fails, dont giveup and try rest */
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if (ret)
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dev_err(dev, "remove dev from genpd failed\n");
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}
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mfd_remove_devices(adev->acp.parent);
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kfree(adev->acp.acp_res);
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kfree(adev->acp.acp_genpd);
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kfree(adev->acp.acp_cell);
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return 0;
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}
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static int acp_suspend(void *handle)
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{
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return 0;
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}
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static int acp_resume(void *handle)
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{
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return 0;
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}
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static int acp_early_init(void *handle)
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{
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return 0;
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}
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static bool acp_is_idle(void *handle)
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{
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return true;
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}
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static int acp_wait_for_idle(void *handle)
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{
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return 0;
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}
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static int acp_soft_reset(void *handle)
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{
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return 0;
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}
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static int acp_set_clockgating_state(void *handle,
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enum amd_clockgating_state state)
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{
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return 0;
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}
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static int acp_set_powergating_state(void *handle,
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enum amd_powergating_state state)
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{
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return 0;
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}
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const struct amd_ip_funcs acp_ip_funcs = {
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.name = "acp_ip",
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.early_init = acp_early_init,
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.late_init = NULL,
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.sw_init = acp_sw_init,
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.sw_fini = acp_sw_fini,
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.hw_init = acp_hw_init,
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.hw_fini = acp_hw_fini,
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.suspend = acp_suspend,
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.resume = acp_resume,
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.is_idle = acp_is_idle,
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.wait_for_idle = acp_wait_for_idle,
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.soft_reset = acp_soft_reset,
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.set_clockgating_state = acp_set_clockgating_state,
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.set_powergating_state = acp_set_powergating_state,
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};
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