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WSL2-Linux-Kernel
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WSL2-Linux-Kernel/drivers/remoteproc/qcom_q6v5_wcss.c

1129 строки
28 KiB
C
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// SPDX-License-Identifier: GPL-2.0
/*
* Copyright (C) 2016-2018 Linaro Ltd.
* Copyright (C) 2014 Sony Mobile Communications AB
* Copyright (c) 2012-2018, The Linux Foundation. All rights reserved.
*/
#include <linux/clk.h>
#include <linux/delay.h>
#include <linux/io.h>
#include <linux/iopoll.h>
#include <linux/kernel.h>
#include <linux/mfd/syscon.h>
#include <linux/module.h>
#include <linux/of_address.h>
#include <linux/of_reserved_mem.h>
#include <linux/platform_device.h>
#include <linux/regmap.h>
#include <linux/regulator/consumer.h>
#include <linux/reset.h>
#include <linux/soc/qcom/mdt_loader.h>
#include "qcom_common.h"
#include "qcom_pil_info.h"
#include "qcom_q6v5.h"
#define WCSS_CRASH_REASON 421
/* Q6SS Register Offsets */
#define Q6SS_RESET_REG 0x014
#define Q6SS_GFMUX_CTL_REG 0x020
#define Q6SS_PWR_CTL_REG 0x030
#define Q6SS_MEM_PWR_CTL 0x0B0
#define Q6SS_STRAP_ACC 0x110
#define Q6SS_CGC_OVERRIDE 0x034
#define Q6SS_BCR_REG 0x6000
/* AXI Halt Register Offsets */
#define AXI_HALTREQ_REG 0x0
#define AXI_HALTACK_REG 0x4
#define AXI_IDLE_REG 0x8
#define HALT_ACK_TIMEOUT_MS 100
/* Q6SS_RESET */
#define Q6SS_STOP_CORE BIT(0)
#define Q6SS_CORE_ARES BIT(1)
#define Q6SS_BUS_ARES_ENABLE BIT(2)
/* Q6SS_BRC_RESET */
#define Q6SS_BRC_BLK_ARES BIT(0)
/* Q6SS_GFMUX_CTL */
#define Q6SS_CLK_ENABLE BIT(1)
#define Q6SS_SWITCH_CLK_SRC BIT(8)
/* Q6SS_PWR_CTL */
#define Q6SS_L2DATA_STBY_N BIT(18)
#define Q6SS_SLP_RET_N BIT(19)
#define Q6SS_CLAMP_IO BIT(20)
#define QDSS_BHS_ON BIT(21)
#define QDSS_Q6_MEMORIES GENMASK(15, 0)
/* Q6SS parameters */
#define Q6SS_LDO_BYP BIT(25)
#define Q6SS_BHS_ON BIT(24)
#define Q6SS_CLAMP_WL BIT(21)
#define Q6SS_CLAMP_QMC_MEM BIT(22)
#define HALT_CHECK_MAX_LOOPS 200
#define Q6SS_XO_CBCR GENMASK(5, 3)
#define Q6SS_SLEEP_CBCR GENMASK(5, 2)
/* Q6SS config/status registers */
#define TCSR_GLOBAL_CFG0 0x0
#define TCSR_GLOBAL_CFG1 0x4
#define SSCAON_CONFIG 0x8
#define SSCAON_STATUS 0xc
#define Q6SS_BHS_STATUS 0x78
#define Q6SS_RST_EVB 0x10
#define BHS_EN_REST_ACK BIT(0)
#define SSCAON_ENABLE BIT(13)
#define SSCAON_BUS_EN BIT(15)
#define SSCAON_BUS_MUX_MASK GENMASK(18, 16)
#define MEM_BANKS 19
#define TCSR_WCSS_CLK_MASK 0x1F
#define TCSR_WCSS_CLK_ENABLE 0x14
#define MAX_HALT_REG 3
enum {
WCSS_IPQ8074,
WCSS_QCS404,
};
struct wcss_data {
const char *firmware_name;
unsigned int crash_reason_smem;
u32 version;
bool aon_reset_required;
bool wcss_q6_reset_required;
const char *ssr_name;
const char *sysmon_name;
int ssctl_id;
const struct rproc_ops *ops;
bool requires_force_stop;
};
struct q6v5_wcss {
struct device *dev;
void __iomem *reg_base;
void __iomem *rmb_base;
struct regmap *halt_map;
u32 halt_q6;
u32 halt_wcss;
u32 halt_nc;
struct clk *xo;
struct clk *ahbfabric_cbcr_clk;
struct clk *gcc_abhs_cbcr;
struct clk *gcc_axim_cbcr;
struct clk *lcc_csr_cbcr;
struct clk *ahbs_cbcr;
struct clk *tcm_slave_cbcr;
struct clk *qdsp6ss_abhm_cbcr;
struct clk *qdsp6ss_sleep_cbcr;
struct clk *qdsp6ss_axim_cbcr;
struct clk *qdsp6ss_xo_cbcr;
struct clk *qdsp6ss_core_gfmux;
struct clk *lcc_bcr_sleep;
struct regulator *cx_supply;
struct qcom_sysmon *sysmon;
struct reset_control *wcss_aon_reset;
struct reset_control *wcss_reset;
struct reset_control *wcss_q6_reset;
struct reset_control *wcss_q6_bcr_reset;
struct qcom_q6v5 q6v5;
phys_addr_t mem_phys;
phys_addr_t mem_reloc;
void *mem_region;
size_t mem_size;
unsigned int crash_reason_smem;
u32 version;
bool requires_force_stop;
struct qcom_rproc_glink glink_subdev;
struct qcom_rproc_ssr ssr_subdev;
};
static int q6v5_wcss_reset(struct q6v5_wcss *wcss)
{
int ret;
u32 val;
int i;
/* Assert resets, stop core */
val = readl(wcss->reg_base + Q6SS_RESET_REG);
val |= Q6SS_CORE_ARES | Q6SS_BUS_ARES_ENABLE | Q6SS_STOP_CORE;
writel(val, wcss->reg_base + Q6SS_RESET_REG);
/* BHS require xo cbcr to be enabled */
val = readl(wcss->reg_base + Q6SS_XO_CBCR);
val |= 0x1;
writel(val, wcss->reg_base + Q6SS_XO_CBCR);
/* Read CLKOFF bit to go low indicating CLK is enabled */
ret = readl_poll_timeout(wcss->reg_base + Q6SS_XO_CBCR,
val, !(val & BIT(31)), 1,
HALT_CHECK_MAX_LOOPS);
if (ret) {
dev_err(wcss->dev,
"xo cbcr enabling timed out (rc:%d)\n", ret);
return ret;
}
/* Enable power block headswitch and wait for it to stabilize */
val = readl(wcss->reg_base + Q6SS_PWR_CTL_REG);
val |= Q6SS_BHS_ON;
writel(val, wcss->reg_base + Q6SS_PWR_CTL_REG);
udelay(1);
/* Put LDO in bypass mode */
val |= Q6SS_LDO_BYP;
writel(val, wcss->reg_base + Q6SS_PWR_CTL_REG);
/* Deassert Q6 compiler memory clamp */
val = readl(wcss->reg_base + Q6SS_PWR_CTL_REG);
val &= ~Q6SS_CLAMP_QMC_MEM;
writel(val, wcss->reg_base + Q6SS_PWR_CTL_REG);
/* Deassert memory peripheral sleep and L2 memory standby */
val |= Q6SS_L2DATA_STBY_N | Q6SS_SLP_RET_N;
writel(val, wcss->reg_base + Q6SS_PWR_CTL_REG);
/* Turn on L1, L2, ETB and JU memories 1 at a time */
val = readl(wcss->reg_base + Q6SS_MEM_PWR_CTL);
for (i = MEM_BANKS; i >= 0; i--) {
val |= BIT(i);
writel(val, wcss->reg_base + Q6SS_MEM_PWR_CTL);
/*
* Read back value to ensure the write is done then
* wait for 1us for both memory peripheral and data
* array to turn on.
*/
val |= readl(wcss->reg_base + Q6SS_MEM_PWR_CTL);
udelay(1);
}
/* Remove word line clamp */
val = readl(wcss->reg_base + Q6SS_PWR_CTL_REG);
val &= ~Q6SS_CLAMP_WL;
writel(val, wcss->reg_base + Q6SS_PWR_CTL_REG);
/* Remove IO clamp */
val &= ~Q6SS_CLAMP_IO;
writel(val, wcss->reg_base + Q6SS_PWR_CTL_REG);
/* Bring core out of reset */
val = readl(wcss->reg_base + Q6SS_RESET_REG);
val &= ~Q6SS_CORE_ARES;
writel(val, wcss->reg_base + Q6SS_RESET_REG);
/* Turn on core clock */
val = readl(wcss->reg_base + Q6SS_GFMUX_CTL_REG);
val |= Q6SS_CLK_ENABLE;
writel(val, wcss->reg_base + Q6SS_GFMUX_CTL_REG);
/* Start core execution */
val = readl(wcss->reg_base + Q6SS_RESET_REG);
val &= ~Q6SS_STOP_CORE;
writel(val, wcss->reg_base + Q6SS_RESET_REG);
return 0;
}
static int q6v5_wcss_start(struct rproc *rproc)
{
struct q6v5_wcss *wcss = rproc->priv;
int ret;
qcom_q6v5_prepare(&wcss->q6v5);
/* Release Q6 and WCSS reset */
ret = reset_control_deassert(wcss->wcss_reset);
if (ret) {
dev_err(wcss->dev, "wcss_reset failed\n");
return ret;
}
ret = reset_control_deassert(wcss->wcss_q6_reset);
if (ret) {
dev_err(wcss->dev, "wcss_q6_reset failed\n");
goto wcss_reset;
}
/* Lithium configuration - clock gating and bus arbitration */
ret = regmap_update_bits(wcss->halt_map,
wcss->halt_nc + TCSR_GLOBAL_CFG0,
TCSR_WCSS_CLK_MASK,
TCSR_WCSS_CLK_ENABLE);
if (ret)
goto wcss_q6_reset;
ret = regmap_update_bits(wcss->halt_map,
wcss->halt_nc + TCSR_GLOBAL_CFG1,
1, 0);
if (ret)
goto wcss_q6_reset;
/* Write bootaddr to EVB so that Q6WCSS will jump there after reset */
writel(rproc->bootaddr >> 4, wcss->reg_base + Q6SS_RST_EVB);
ret = q6v5_wcss_reset(wcss);
if (ret)
goto wcss_q6_reset;
ret = qcom_q6v5_wait_for_start(&wcss->q6v5, 5 * HZ);
if (ret == -ETIMEDOUT)
dev_err(wcss->dev, "start timed out\n");
return ret;
wcss_q6_reset:
reset_control_assert(wcss->wcss_q6_reset);
wcss_reset:
reset_control_assert(wcss->wcss_reset);
return ret;
}
static int q6v5_wcss_qcs404_power_on(struct q6v5_wcss *wcss)
{
unsigned long val;
int ret, idx;
/* Toggle the restart */
reset_control_assert(wcss->wcss_reset);
usleep_range(200, 300);
reset_control_deassert(wcss->wcss_reset);
usleep_range(200, 300);
/* Enable GCC_WDSP_Q6SS_AHBS_CBCR clock */
ret = clk_prepare_enable(wcss->gcc_abhs_cbcr);
if (ret)
return ret;
/* Remove reset to the WCNSS QDSP6SS */
reset_control_deassert(wcss->wcss_q6_bcr_reset);
/* Enable Q6SSTOP_AHBFABRIC_CBCR clock */
ret = clk_prepare_enable(wcss->ahbfabric_cbcr_clk);
if (ret)
goto disable_gcc_abhs_cbcr_clk;
/* Enable the LCCCSR CBC clock, Q6SSTOP_Q6SSTOP_LCC_CSR_CBCR clock */
ret = clk_prepare_enable(wcss->lcc_csr_cbcr);
if (ret)
goto disable_ahbfabric_cbcr_clk;
/* Enable the Q6AHBS CBC, Q6SSTOP_Q6SS_AHBS_CBCR clock */
ret = clk_prepare_enable(wcss->ahbs_cbcr);
if (ret)
goto disable_csr_cbcr_clk;
/* Enable the TCM slave CBC, Q6SSTOP_Q6SS_TCM_SLAVE_CBCR clock */
ret = clk_prepare_enable(wcss->tcm_slave_cbcr);
if (ret)
goto disable_ahbs_cbcr_clk;
/* Enable the Q6SS AHB master CBC, Q6SSTOP_Q6SS_AHBM_CBCR clock */
ret = clk_prepare_enable(wcss->qdsp6ss_abhm_cbcr);
if (ret)
goto disable_tcm_slave_cbcr_clk;
/* Enable the Q6SS AXI master CBC, Q6SSTOP_Q6SS_AXIM_CBCR clock */
ret = clk_prepare_enable(wcss->qdsp6ss_axim_cbcr);
if (ret)
goto disable_abhm_cbcr_clk;
/* Enable the Q6SS XO CBC */
val = readl(wcss->reg_base + Q6SS_XO_CBCR);
val |= BIT(0);
writel(val, wcss->reg_base + Q6SS_XO_CBCR);
/* Read CLKOFF bit to go low indicating CLK is enabled */
ret = readl_poll_timeout(wcss->reg_base + Q6SS_XO_CBCR,
val, !(val & BIT(31)), 1,
HALT_CHECK_MAX_LOOPS);
if (ret) {
dev_err(wcss->dev,
"xo cbcr enabling timed out (rc:%d)\n", ret);
goto disable_xo_cbcr_clk;
}
writel(0, wcss->reg_base + Q6SS_CGC_OVERRIDE);
/* Enable QDSP6 sleep clock clock */
val = readl(wcss->reg_base + Q6SS_SLEEP_CBCR);
val |= BIT(0);
writel(val, wcss->reg_base + Q6SS_SLEEP_CBCR);
/* Enable the Enable the Q6 AXI clock, GCC_WDSP_Q6SS_AXIM_CBCR*/
ret = clk_prepare_enable(wcss->gcc_axim_cbcr);
if (ret)
goto disable_sleep_cbcr_clk;
/* Assert resets, stop core */
val = readl(wcss->reg_base + Q6SS_RESET_REG);
val |= Q6SS_CORE_ARES | Q6SS_BUS_ARES_ENABLE | Q6SS_STOP_CORE;
writel(val, wcss->reg_base + Q6SS_RESET_REG);
/* Program the QDSP6SS PWR_CTL register */
writel(0x01700000, wcss->reg_base + Q6SS_PWR_CTL_REG);
writel(0x03700000, wcss->reg_base + Q6SS_PWR_CTL_REG);
writel(0x03300000, wcss->reg_base + Q6SS_PWR_CTL_REG);
writel(0x033C0000, wcss->reg_base + Q6SS_PWR_CTL_REG);
/*
* Enable memories by turning on the QDSP6 memory foot/head switch, one
* bank at a time to avoid in-rush current
*/
for (idx = 28; idx >= 0; idx--) {
writel((readl(wcss->reg_base + Q6SS_MEM_PWR_CTL) |
(1 << idx)), wcss->reg_base + Q6SS_MEM_PWR_CTL);
}
writel(0x031C0000, wcss->reg_base + Q6SS_PWR_CTL_REG);
writel(0x030C0000, wcss->reg_base + Q6SS_PWR_CTL_REG);
val = readl(wcss->reg_base + Q6SS_RESET_REG);
val &= ~Q6SS_CORE_ARES;
writel(val, wcss->reg_base + Q6SS_RESET_REG);
/* Enable the Q6 core clock at the GFM, Q6SSTOP_QDSP6SS_GFMUX_CTL */
val = readl(wcss->reg_base + Q6SS_GFMUX_CTL_REG);
val |= Q6SS_CLK_ENABLE | Q6SS_SWITCH_CLK_SRC;
writel(val, wcss->reg_base + Q6SS_GFMUX_CTL_REG);
/* Enable sleep clock branch needed for BCR circuit */
ret = clk_prepare_enable(wcss->lcc_bcr_sleep);
if (ret)
goto disable_core_gfmux_clk;
return 0;
disable_core_gfmux_clk:
val = readl(wcss->reg_base + Q6SS_GFMUX_CTL_REG);
val &= ~(Q6SS_CLK_ENABLE | Q6SS_SWITCH_CLK_SRC);
writel(val, wcss->reg_base + Q6SS_GFMUX_CTL_REG);
clk_disable_unprepare(wcss->gcc_axim_cbcr);
disable_sleep_cbcr_clk:
val = readl(wcss->reg_base + Q6SS_SLEEP_CBCR);
val &= ~Q6SS_CLK_ENABLE;
writel(val, wcss->reg_base + Q6SS_SLEEP_CBCR);
disable_xo_cbcr_clk:
val = readl(wcss->reg_base + Q6SS_XO_CBCR);
val &= ~Q6SS_CLK_ENABLE;
writel(val, wcss->reg_base + Q6SS_XO_CBCR);
clk_disable_unprepare(wcss->qdsp6ss_axim_cbcr);
disable_abhm_cbcr_clk:
clk_disable_unprepare(wcss->qdsp6ss_abhm_cbcr);
disable_tcm_slave_cbcr_clk:
clk_disable_unprepare(wcss->tcm_slave_cbcr);
disable_ahbs_cbcr_clk:
clk_disable_unprepare(wcss->ahbs_cbcr);
disable_csr_cbcr_clk:
clk_disable_unprepare(wcss->lcc_csr_cbcr);
disable_ahbfabric_cbcr_clk:
clk_disable_unprepare(wcss->ahbfabric_cbcr_clk);
disable_gcc_abhs_cbcr_clk:
clk_disable_unprepare(wcss->gcc_abhs_cbcr);
return ret;
}
static inline int q6v5_wcss_qcs404_reset(struct q6v5_wcss *wcss)
{
unsigned long val;
writel(0x80800000, wcss->reg_base + Q6SS_STRAP_ACC);
/* Start core execution */
val = readl(wcss->reg_base + Q6SS_RESET_REG);
val &= ~Q6SS_STOP_CORE;
writel(val, wcss->reg_base + Q6SS_RESET_REG);
return 0;
}
static int q6v5_qcs404_wcss_start(struct rproc *rproc)
{
struct q6v5_wcss *wcss = rproc->priv;
int ret;
ret = clk_prepare_enable(wcss->xo);
if (ret)
return ret;
ret = regulator_enable(wcss->cx_supply);
if (ret)
goto disable_xo_clk;
qcom_q6v5_prepare(&wcss->q6v5);
ret = q6v5_wcss_qcs404_power_on(wcss);
if (ret) {
dev_err(wcss->dev, "wcss clk_enable failed\n");
goto disable_cx_supply;
}
writel(rproc->bootaddr >> 4, wcss->reg_base + Q6SS_RST_EVB);
q6v5_wcss_qcs404_reset(wcss);
ret = qcom_q6v5_wait_for_start(&wcss->q6v5, 5 * HZ);
if (ret == -ETIMEDOUT) {
dev_err(wcss->dev, "start timed out\n");
goto disable_cx_supply;
}
return 0;
disable_cx_supply:
regulator_disable(wcss->cx_supply);
disable_xo_clk:
clk_disable_unprepare(wcss->xo);
return ret;
}
static void q6v5_wcss_halt_axi_port(struct q6v5_wcss *wcss,
struct regmap *halt_map,
u32 offset)
{
unsigned long timeout;
unsigned int val;
int ret;
/* Check if we're already idle */
ret = regmap_read(halt_map, offset + AXI_IDLE_REG, &val);
if (!ret && val)
return;
/* Assert halt request */
regmap_write(halt_map, offset + AXI_HALTREQ_REG, 1);
/* Wait for halt */
timeout = jiffies + msecs_to_jiffies(HALT_ACK_TIMEOUT_MS);
for (;;) {
ret = regmap_read(halt_map, offset + AXI_HALTACK_REG, &val);
if (ret || val || time_after(jiffies, timeout))
break;
msleep(1);
}
ret = regmap_read(halt_map, offset + AXI_IDLE_REG, &val);
if (ret || !val)
dev_err(wcss->dev, "port failed halt\n");
/* Clear halt request (port will remain halted until reset) */
regmap_write(halt_map, offset + AXI_HALTREQ_REG, 0);
}
static int q6v5_qcs404_wcss_shutdown(struct q6v5_wcss *wcss)
{
unsigned long val;
int ret;
q6v5_wcss_halt_axi_port(wcss, wcss->halt_map, wcss->halt_wcss);
/* assert clamps to avoid MX current inrush */
val = readl(wcss->reg_base + Q6SS_PWR_CTL_REG);
val |= (Q6SS_CLAMP_IO | Q6SS_CLAMP_WL | Q6SS_CLAMP_QMC_MEM);
writel(val, wcss->reg_base + Q6SS_PWR_CTL_REG);
/* Disable memories by turning off memory foot/headswitch */
writel((readl(wcss->reg_base + Q6SS_MEM_PWR_CTL) &
~QDSS_Q6_MEMORIES),
wcss->reg_base + Q6SS_MEM_PWR_CTL);
/* Clear the BHS_ON bit */
val = readl(wcss->reg_base + Q6SS_PWR_CTL_REG);
val &= ~Q6SS_BHS_ON;
writel(val, wcss->reg_base + Q6SS_PWR_CTL_REG);
clk_disable_unprepare(wcss->ahbfabric_cbcr_clk);
clk_disable_unprepare(wcss->lcc_csr_cbcr);
clk_disable_unprepare(wcss->tcm_slave_cbcr);
clk_disable_unprepare(wcss->qdsp6ss_abhm_cbcr);
clk_disable_unprepare(wcss->qdsp6ss_axim_cbcr);
val = readl(wcss->reg_base + Q6SS_SLEEP_CBCR);
val &= ~BIT(0);
writel(val, wcss->reg_base + Q6SS_SLEEP_CBCR);
val = readl(wcss->reg_base + Q6SS_XO_CBCR);
val &= ~BIT(0);
writel(val, wcss->reg_base + Q6SS_XO_CBCR);
clk_disable_unprepare(wcss->ahbs_cbcr);
clk_disable_unprepare(wcss->lcc_bcr_sleep);
val = readl(wcss->reg_base + Q6SS_GFMUX_CTL_REG);
val &= ~(Q6SS_CLK_ENABLE | Q6SS_SWITCH_CLK_SRC);
writel(val, wcss->reg_base + Q6SS_GFMUX_CTL_REG);
clk_disable_unprepare(wcss->gcc_abhs_cbcr);
ret = reset_control_assert(wcss->wcss_reset);
if (ret) {
dev_err(wcss->dev, "wcss_reset failed\n");
return ret;
}
usleep_range(200, 300);
ret = reset_control_deassert(wcss->wcss_reset);
if (ret) {
dev_err(wcss->dev, "wcss_reset failed\n");
return ret;
}
usleep_range(200, 300);
clk_disable_unprepare(wcss->gcc_axim_cbcr);
return 0;
}
static int q6v5_wcss_powerdown(struct q6v5_wcss *wcss)
{
int ret;
u32 val;
/* 1 - Assert WCSS/Q6 HALTREQ */
q6v5_wcss_halt_axi_port(wcss, wcss->halt_map, wcss->halt_wcss);
/* 2 - Enable WCSSAON_CONFIG */
val = readl(wcss->rmb_base + SSCAON_CONFIG);
val |= SSCAON_ENABLE;
writel(val, wcss->rmb_base + SSCAON_CONFIG);
/* 3 - Set SSCAON_CONFIG */
val |= SSCAON_BUS_EN;
val &= ~SSCAON_BUS_MUX_MASK;
writel(val, wcss->rmb_base + SSCAON_CONFIG);
/* 4 - SSCAON_CONFIG 1 */
val |= BIT(1);
writel(val, wcss->rmb_base + SSCAON_CONFIG);
/* 5 - wait for SSCAON_STATUS */
ret = readl_poll_timeout(wcss->rmb_base + SSCAON_STATUS,
val, (val & 0xffff) == 0x400, 1000,
HALT_CHECK_MAX_LOOPS);
if (ret) {
dev_err(wcss->dev,
"can't get SSCAON_STATUS rc:%d)\n", ret);
return ret;
}
/* 6 - De-assert WCSS_AON reset */
reset_control_assert(wcss->wcss_aon_reset);
/* 7 - Disable WCSSAON_CONFIG 13 */
val = readl(wcss->rmb_base + SSCAON_CONFIG);
val &= ~SSCAON_ENABLE;
writel(val, wcss->rmb_base + SSCAON_CONFIG);
/* 8 - De-assert WCSS/Q6 HALTREQ */
reset_control_assert(wcss->wcss_reset);
return 0;
}
static int q6v5_q6_powerdown(struct q6v5_wcss *wcss)
{
int ret;
u32 val;
int i;
/* 1 - Halt Q6 bus interface */
q6v5_wcss_halt_axi_port(wcss, wcss->halt_map, wcss->halt_q6);
/* 2 - Disable Q6 Core clock */
val = readl(wcss->reg_base + Q6SS_GFMUX_CTL_REG);
val &= ~Q6SS_CLK_ENABLE;
writel(val, wcss->reg_base + Q6SS_GFMUX_CTL_REG);
/* 3 - Clamp I/O */
val = readl(wcss->reg_base + Q6SS_PWR_CTL_REG);
val |= Q6SS_CLAMP_IO;
writel(val, wcss->reg_base + Q6SS_PWR_CTL_REG);
/* 4 - Clamp WL */
val |= QDSS_BHS_ON;
writel(val, wcss->reg_base + Q6SS_PWR_CTL_REG);
/* 5 - Clear Erase standby */
val &= ~Q6SS_L2DATA_STBY_N;
writel(val, wcss->reg_base + Q6SS_PWR_CTL_REG);
/* 6 - Clear Sleep RTN */
val &= ~Q6SS_SLP_RET_N;
writel(val, wcss->reg_base + Q6SS_PWR_CTL_REG);
/* 7 - turn off Q6 memory foot/head switch one bank at a time */
for (i = 0; i < 20; i++) {
val = readl(wcss->reg_base + Q6SS_MEM_PWR_CTL);
val &= ~BIT(i);
writel(val, wcss->reg_base + Q6SS_MEM_PWR_CTL);
mdelay(1);
}
/* 8 - Assert QMC memory RTN */
val = readl(wcss->reg_base + Q6SS_PWR_CTL_REG);
val |= Q6SS_CLAMP_QMC_MEM;
writel(val, wcss->reg_base + Q6SS_PWR_CTL_REG);
/* 9 - Turn off BHS */
val &= ~Q6SS_BHS_ON;
writel(val, wcss->reg_base + Q6SS_PWR_CTL_REG);
udelay(1);
/* 10 - Wait till BHS Reset is done */
ret = readl_poll_timeout(wcss->reg_base + Q6SS_BHS_STATUS,
val, !(val & BHS_EN_REST_ACK), 1000,
HALT_CHECK_MAX_LOOPS);
if (ret) {
dev_err(wcss->dev, "BHS_STATUS not OFF (rc:%d)\n", ret);
return ret;
}
/* 11 - Assert WCSS reset */
reset_control_assert(wcss->wcss_reset);
/* 12 - Assert Q6 reset */
reset_control_assert(wcss->wcss_q6_reset);
return 0;
}
static int q6v5_wcss_stop(struct rproc *rproc)
{
struct q6v5_wcss *wcss = rproc->priv;
int ret;
/* WCSS powerdown */
if (wcss->requires_force_stop) {
ret = qcom_q6v5_request_stop(&wcss->q6v5, NULL);
if (ret == -ETIMEDOUT) {
dev_err(wcss->dev, "timed out on wait\n");
return ret;
}
}
if (wcss->version == WCSS_QCS404) {
ret = q6v5_qcs404_wcss_shutdown(wcss);
if (ret)
return ret;
} else {
ret = q6v5_wcss_powerdown(wcss);
if (ret)
return ret;
/* Q6 Power down */
ret = q6v5_q6_powerdown(wcss);
if (ret)
return ret;
}
qcom_q6v5_unprepare(&wcss->q6v5);
return 0;
}
static void *q6v5_wcss_da_to_va(struct rproc *rproc, u64 da, size_t len, bool *is_iomem)
{
struct q6v5_wcss *wcss = rproc->priv;
int offset;
offset = da - wcss->mem_reloc;
if (offset < 0 || offset + len > wcss->mem_size)
return NULL;
return wcss->mem_region + offset;
}
static int q6v5_wcss_load(struct rproc *rproc, const struct firmware *fw)
{
struct q6v5_wcss *wcss = rproc->priv;
int ret;
ret = qcom_mdt_load_no_init(wcss->dev, fw, rproc->firmware,
0, wcss->mem_region, wcss->mem_phys,
wcss->mem_size, &wcss->mem_reloc);
if (ret)
return ret;
qcom_pil_info_store("wcnss", wcss->mem_phys, wcss->mem_size);
return ret;
}
static const struct rproc_ops q6v5_wcss_ipq8074_ops = {
.start = q6v5_wcss_start,
.stop = q6v5_wcss_stop,
.da_to_va = q6v5_wcss_da_to_va,
.load = q6v5_wcss_load,
.get_boot_addr = rproc_elf_get_boot_addr,
};
static const struct rproc_ops q6v5_wcss_qcs404_ops = {
.start = q6v5_qcs404_wcss_start,
.stop = q6v5_wcss_stop,
.da_to_va = q6v5_wcss_da_to_va,
.load = q6v5_wcss_load,
.get_boot_addr = rproc_elf_get_boot_addr,
.parse_fw = qcom_register_dump_segments,
};
static int q6v5_wcss_init_reset(struct q6v5_wcss *wcss,
const struct wcss_data *desc)
{
struct device *dev = wcss->dev;
if (desc->aon_reset_required) {
wcss->wcss_aon_reset = devm_reset_control_get_exclusive(dev, "wcss_aon_reset");
if (IS_ERR(wcss->wcss_aon_reset)) {
dev_err(wcss->dev, "fail to acquire wcss_aon_reset\n");
return PTR_ERR(wcss->wcss_aon_reset);
}
}
wcss->wcss_reset = devm_reset_control_get_exclusive(dev, "wcss_reset");
if (IS_ERR(wcss->wcss_reset)) {
dev_err(wcss->dev, "unable to acquire wcss_reset\n");
return PTR_ERR(wcss->wcss_reset);
}
if (desc->wcss_q6_reset_required) {
wcss->wcss_q6_reset = devm_reset_control_get_exclusive(dev, "wcss_q6_reset");
if (IS_ERR(wcss->wcss_q6_reset)) {
dev_err(wcss->dev, "unable to acquire wcss_q6_reset\n");
return PTR_ERR(wcss->wcss_q6_reset);
}
}
wcss->wcss_q6_bcr_reset = devm_reset_control_get_exclusive(dev, "wcss_q6_bcr_reset");
if (IS_ERR(wcss->wcss_q6_bcr_reset)) {
dev_err(wcss->dev, "unable to acquire wcss_q6_bcr_reset\n");
return PTR_ERR(wcss->wcss_q6_bcr_reset);
}
return 0;
}
static int q6v5_wcss_init_mmio(struct q6v5_wcss *wcss,
struct platform_device *pdev)
{
unsigned int halt_reg[MAX_HALT_REG] = {0};
struct device_node *syscon;
struct resource *res;
int ret;
res = platform_get_resource_byname(pdev, IORESOURCE_MEM, "qdsp6");
if (!res)
return -EINVAL;
wcss->reg_base = devm_ioremap(&pdev->dev, res->start,
resource_size(res));
if (!wcss->reg_base)
return -ENOMEM;
if (wcss->version == WCSS_IPQ8074) {
res = platform_get_resource_byname(pdev, IORESOURCE_MEM, "rmb");
wcss->rmb_base = devm_ioremap_resource(&pdev->dev, res);
if (IS_ERR(wcss->rmb_base))
return PTR_ERR(wcss->rmb_base);
}
syscon = of_parse_phandle(pdev->dev.of_node,
"qcom,halt-regs", 0);
if (!syscon) {
dev_err(&pdev->dev, "failed to parse qcom,halt-regs\n");
return -EINVAL;
}
wcss->halt_map = syscon_node_to_regmap(syscon);
of_node_put(syscon);
if (IS_ERR(wcss->halt_map))
return PTR_ERR(wcss->halt_map);
ret = of_property_read_variable_u32_array(pdev->dev.of_node,
"qcom,halt-regs",
halt_reg, 0,
MAX_HALT_REG);
if (ret < 0) {
dev_err(&pdev->dev, "failed to parse qcom,halt-regs\n");
return -EINVAL;
}
wcss->halt_q6 = halt_reg[0];
wcss->halt_wcss = halt_reg[1];
wcss->halt_nc = halt_reg[2];
return 0;
}
static int q6v5_alloc_memory_region(struct q6v5_wcss *wcss)
{
struct reserved_mem *rmem = NULL;
struct device_node *node;
struct device *dev = wcss->dev;
node = of_parse_phandle(dev->of_node, "memory-region", 0);
if (node)
rmem = of_reserved_mem_lookup(node);
of_node_put(node);
if (!rmem) {
dev_err(dev, "unable to acquire memory-region\n");
return -EINVAL;
}
wcss->mem_phys = rmem->base;
wcss->mem_reloc = rmem->base;
wcss->mem_size = rmem->size;
wcss->mem_region = devm_ioremap_wc(dev, wcss->mem_phys, wcss->mem_size);
if (!wcss->mem_region) {
dev_err(dev, "unable to map memory region: %pa+%pa\n",
&rmem->base, &rmem->size);
return -EBUSY;
}
return 0;
}
static int q6v5_wcss_init_clock(struct q6v5_wcss *wcss)
{
int ret;
wcss->xo = devm_clk_get(wcss->dev, "xo");
if (IS_ERR(wcss->xo)) {
ret = PTR_ERR(wcss->xo);
if (ret != -EPROBE_DEFER)
dev_err(wcss->dev, "failed to get xo clock");
return ret;
}
wcss->gcc_abhs_cbcr = devm_clk_get(wcss->dev, "gcc_abhs_cbcr");
if (IS_ERR(wcss->gcc_abhs_cbcr)) {
ret = PTR_ERR(wcss->gcc_abhs_cbcr);
if (ret != -EPROBE_DEFER)
dev_err(wcss->dev, "failed to get gcc abhs clock");
return ret;
}
wcss->gcc_axim_cbcr = devm_clk_get(wcss->dev, "gcc_axim_cbcr");
if (IS_ERR(wcss->gcc_axim_cbcr)) {
ret = PTR_ERR(wcss->gcc_axim_cbcr);
if (ret != -EPROBE_DEFER)
dev_err(wcss->dev, "failed to get gcc axim clock\n");
return ret;
}
wcss->ahbfabric_cbcr_clk = devm_clk_get(wcss->dev,
"lcc_ahbfabric_cbc");
if (IS_ERR(wcss->ahbfabric_cbcr_clk)) {
ret = PTR_ERR(wcss->ahbfabric_cbcr_clk);
if (ret != -EPROBE_DEFER)
dev_err(wcss->dev, "failed to get ahbfabric clock\n");
return ret;
}
wcss->lcc_csr_cbcr = devm_clk_get(wcss->dev, "tcsr_lcc_cbc");
if (IS_ERR(wcss->lcc_csr_cbcr)) {
ret = PTR_ERR(wcss->lcc_csr_cbcr);
if (ret != -EPROBE_DEFER)
dev_err(wcss->dev, "failed to get csr cbcr clk\n");
return ret;
}
wcss->ahbs_cbcr = devm_clk_get(wcss->dev,
"lcc_abhs_cbc");
if (IS_ERR(wcss->ahbs_cbcr)) {
ret = PTR_ERR(wcss->ahbs_cbcr);
if (ret != -EPROBE_DEFER)
dev_err(wcss->dev, "failed to get ahbs_cbcr clk\n");
return ret;
}
wcss->tcm_slave_cbcr = devm_clk_get(wcss->dev,
"lcc_tcm_slave_cbc");
if (IS_ERR(wcss->tcm_slave_cbcr)) {
ret = PTR_ERR(wcss->tcm_slave_cbcr);
if (ret != -EPROBE_DEFER)
dev_err(wcss->dev, "failed to get tcm cbcr clk\n");
return ret;
}
wcss->qdsp6ss_abhm_cbcr = devm_clk_get(wcss->dev, "lcc_abhm_cbc");
if (IS_ERR(wcss->qdsp6ss_abhm_cbcr)) {
ret = PTR_ERR(wcss->qdsp6ss_abhm_cbcr);
if (ret != -EPROBE_DEFER)
dev_err(wcss->dev, "failed to get abhm cbcr clk\n");
return ret;
}
wcss->qdsp6ss_axim_cbcr = devm_clk_get(wcss->dev, "lcc_axim_cbc");
if (IS_ERR(wcss->qdsp6ss_axim_cbcr)) {
ret = PTR_ERR(wcss->qdsp6ss_axim_cbcr);
if (ret != -EPROBE_DEFER)
dev_err(wcss->dev, "failed to get axim cbcr clk\n");
return ret;
}
wcss->lcc_bcr_sleep = devm_clk_get(wcss->dev, "lcc_bcr_sleep");
if (IS_ERR(wcss->lcc_bcr_sleep)) {
ret = PTR_ERR(wcss->lcc_bcr_sleep);
if (ret != -EPROBE_DEFER)
dev_err(wcss->dev, "failed to get bcr cbcr clk\n");
return ret;
}
return 0;
}
static int q6v5_wcss_init_regulator(struct q6v5_wcss *wcss)
{
wcss->cx_supply = devm_regulator_get(wcss->dev, "cx");
if (IS_ERR(wcss->cx_supply))
return PTR_ERR(wcss->cx_supply);
regulator_set_load(wcss->cx_supply, 100000);
return 0;
}
static int q6v5_wcss_probe(struct platform_device *pdev)
{
const struct wcss_data *desc;
struct q6v5_wcss *wcss;
struct rproc *rproc;
int ret;
desc = device_get_match_data(&pdev->dev);
if (!desc)
return -EINVAL;
rproc = rproc_alloc(&pdev->dev, pdev->name, desc->ops,
desc->firmware_name, sizeof(*wcss));
if (!rproc) {
dev_err(&pdev->dev, "failed to allocate rproc\n");
return -ENOMEM;
}
wcss = rproc->priv;
wcss->dev = &pdev->dev;
wcss->version = desc->version;
wcss->version = desc->version;
wcss->requires_force_stop = desc->requires_force_stop;
ret = q6v5_wcss_init_mmio(wcss, pdev);
if (ret)
goto free_rproc;
ret = q6v5_alloc_memory_region(wcss);
if (ret)
goto free_rproc;
if (wcss->version == WCSS_QCS404) {
ret = q6v5_wcss_init_clock(wcss);
if (ret)
goto free_rproc;
ret = q6v5_wcss_init_regulator(wcss);
if (ret)
goto free_rproc;
}
ret = q6v5_wcss_init_reset(wcss, desc);
if (ret)
goto free_rproc;
ret = qcom_q6v5_init(&wcss->q6v5, pdev, rproc, desc->crash_reason_smem,
NULL);
if (ret)
goto free_rproc;
qcom_add_glink_subdev(rproc, &wcss->glink_subdev, "q6wcss");
qcom_add_ssr_subdev(rproc, &wcss->ssr_subdev, "q6wcss");
if (desc->ssctl_id)
wcss->sysmon = qcom_add_sysmon_subdev(rproc,
desc->sysmon_name,
desc->ssctl_id);
ret = rproc_add(rproc);
if (ret)
goto free_rproc;
platform_set_drvdata(pdev, rproc);
return 0;
free_rproc:
rproc_free(rproc);
return ret;
}
static int q6v5_wcss_remove(struct platform_device *pdev)
{
struct rproc *rproc = platform_get_drvdata(pdev);
rproc_del(rproc);
rproc_free(rproc);
return 0;
}
static const struct wcss_data wcss_ipq8074_res_init = {
.firmware_name = "IPQ8074/q6_fw.mdt",
.crash_reason_smem = WCSS_CRASH_REASON,
.aon_reset_required = true,
.wcss_q6_reset_required = true,
.ops = &q6v5_wcss_ipq8074_ops,
.requires_force_stop = true,
};
static const struct wcss_data wcss_qcs404_res_init = {
.crash_reason_smem = WCSS_CRASH_REASON,
.firmware_name = "wcnss.mdt",
.version = WCSS_QCS404,
.aon_reset_required = false,
.wcss_q6_reset_required = false,
.ssr_name = "mpss",
.sysmon_name = "wcnss",
.ssctl_id = 0x12,
.ops = &q6v5_wcss_qcs404_ops,
.requires_force_stop = false,
};
static const struct of_device_id q6v5_wcss_of_match[] = {
{ .compatible = "qcom,ipq8074-wcss-pil", .data = &wcss_ipq8074_res_init },
{ .compatible = "qcom,qcs404-wcss-pil", .data = &wcss_qcs404_res_init },
{ },
};
MODULE_DEVICE_TABLE(of, q6v5_wcss_of_match);
static struct platform_driver q6v5_wcss_driver = {
.probe = q6v5_wcss_probe,
.remove = q6v5_wcss_remove,
.driver = {
.name = "qcom-q6v5-wcss-pil",
.of_match_table = q6v5_wcss_of_match,
},
};
module_platform_driver(q6v5_wcss_driver);
MODULE_DESCRIPTION("Hexagon WCSS Peripheral Image Loader");
MODULE_LICENSE("GPL v2");
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