M7350/kernel/arch/arm/mach-msm/pil-q6v5-mss.c
2024-09-09 08:52:07 +00:00

954 lines
23 KiB
C

/*
* Copyright (c) 2012-2013, The Linux Foundation. All rights reserved.
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License version 2 and
* only version 2 as published by the Free Software Foundation.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*/
#include <linux/init.h>
#include <linux/module.h>
#include <linux/platform_device.h>
#include <linux/io.h>
#include <linux/iopoll.h>
#include <linux/ioport.h>
#include <linux/delay.h>
#include <linux/sched.h>
#include <linux/clk.h>
#include <linux/err.h>
#include <linux/of.h>
#include <linux/regulator/consumer.h>
#include <linux/interrupt.h>
#include <linux/of_gpio.h>
#include <linux/dma-mapping.h>
#include <mach/subsystem_restart.h>
#include <mach/clk.h>
#include <mach/msm_smsm.h>
#include <mach/ramdump.h>
#include <mach/msm_smem.h>
#include "peripheral-loader.h"
#include "pil-q6v5.h"
#include "sysmon.h"
/* Q6 Register Offsets */
#define QDSP6SS_RST_EVB 0x010
/* AXI Halting Registers */
#define MSS_Q6_HALT_BASE 0x180
#define MSS_MODEM_HALT_BASE 0x200
#define MSS_NC_HALT_BASE 0x280
/* RMB Status Register Values */
#define STATUS_PBL_SUCCESS 0x1
#define STATUS_XPU_UNLOCKED 0x1
#define STATUS_XPU_UNLOCKED_SCRIBBLED 0x2
/* PBL/MBA interface registers */
#define RMB_MBA_IMAGE 0x00
#define RMB_PBL_STATUS 0x04
#define RMB_MBA_COMMAND 0x08
#define RMB_MBA_STATUS 0x0C
#define RMB_PMI_META_DATA 0x10
#define RMB_PMI_CODE_START 0x14
#define RMB_PMI_CODE_LENGTH 0x18
#define VDD_MSS_UV 1050000
#define MAX_VDD_MSS_UV 1150000
#define MAX_VDD_MX_UV 1150000
#define PROXY_TIMEOUT_MS 10000
#define POLL_INTERVAL_US 50
#define CMD_META_DATA_READY 0x1
#define CMD_LOAD_READY 0x2
#define STATUS_META_DATA_AUTH_SUCCESS 0x3
#define STATUS_AUTH_COMPLETE 0x4
#define MAX_SSR_REASON_LEN 81U
/* External BHS */
#define EXTERNAL_BHS_ON BIT(0)
#define EXTERNAL_BHS_STATUS BIT(4)
#define BHS_TIMEOUT_US 50
#define STOP_ACK_TIMEOUT_MS 1000
struct mba_data {
void __iomem *rmb_base;
void __iomem *io_clamp_reg;
struct pil_desc desc;
struct subsys_device *subsys;
struct subsys_desc subsys_desc;
void *adsp_state_notifier;
u32 img_length;
struct q6v5_data *q6;
bool self_auth;
void *ramdump_dev;
void *smem_ramdump_dev;
bool crash_shutdown;
bool ignore_errors;
int err_fatal_irq;
unsigned int stop_ack_irq;
int force_stop_gpio;
struct completion stop_ack;
};
static int pbl_mba_boot_timeout_ms = 1000;
module_param(pbl_mba_boot_timeout_ms, int, S_IRUGO | S_IWUSR);
static int modem_auth_timeout_ms = 10000;
module_param(modem_auth_timeout_ms, int, S_IRUGO | S_IWUSR);
static int pil_mss_power_up(struct q6v5_data *drv)
{
int ret = 0;
struct device *dev = drv->desc.dev;
u32 regval;
if (drv->vreg) {
ret = regulator_enable(drv->vreg);
if (ret)
dev_err(dev, "Failed to enable modem regulator.\n");
}
if (drv->cxrail_bhs) {
regval = readl_relaxed(drv->cxrail_bhs);
regval |= EXTERNAL_BHS_ON;
writel_relaxed(regval, drv->cxrail_bhs);
ret = readl_poll_timeout(drv->cxrail_bhs, regval,
regval & EXTERNAL_BHS_STATUS, 1, BHS_TIMEOUT_US);
}
return ret;
}
static int pil_mss_power_down(struct q6v5_data *drv)
{
u32 regval;
if (drv->cxrail_bhs) {
regval = readl_relaxed(drv->cxrail_bhs);
regval &= ~EXTERNAL_BHS_ON;
writel_relaxed(regval, drv->cxrail_bhs);
}
if (drv->vreg)
return regulator_disable(drv->vreg);
return 0;
}
static int pil_mss_enable_clks(struct q6v5_data *drv)
{
int ret;
ret = clk_prepare_enable(drv->ahb_clk);
if (ret)
goto err_ahb_clk;
ret = clk_prepare_enable(drv->axi_clk);
if (ret)
goto err_axi_clk;
ret = clk_prepare_enable(drv->rom_clk);
if (ret)
goto err_rom_clk;
return 0;
err_rom_clk:
clk_disable_unprepare(drv->axi_clk);
err_axi_clk:
clk_disable_unprepare(drv->ahb_clk);
err_ahb_clk:
return ret;
}
static void pil_mss_disable_clks(struct q6v5_data *drv)
{
clk_disable_unprepare(drv->rom_clk);
clk_disable_unprepare(drv->axi_clk);
clk_disable_unprepare(drv->ahb_clk);
}
static int wait_for_mba_ready(struct q6v5_data *drv)
{
struct device *dev = drv->desc.dev;
struct mba_data *mba = platform_get_drvdata(to_platform_device(dev));
int ret;
u32 status;
/* Wait for PBL completion. */
ret = readl_poll_timeout(mba->rmb_base + RMB_PBL_STATUS, status,
status != 0, POLL_INTERVAL_US, pbl_mba_boot_timeout_ms * 1000);
if (ret) {
dev_err(dev, "PBL boot timed out\n");
return ret;
}
if (status != STATUS_PBL_SUCCESS) {
dev_err(dev, "PBL returned unexpected status %d\n", status);
return -EINVAL;
}
/* Wait for MBA completion. */
ret = readl_poll_timeout(mba->rmb_base + RMB_MBA_STATUS, status,
status != 0, POLL_INTERVAL_US, pbl_mba_boot_timeout_ms * 1000);
if (ret) {
dev_err(dev, "MBA boot timed out\n");
return ret;
}
if (status != STATUS_XPU_UNLOCKED &&
status != STATUS_XPU_UNLOCKED_SCRIBBLED) {
dev_err(dev, "MBA returned unexpected status %d\n", status);
return -EINVAL;
}
return 0;
}
static int pil_mss_shutdown(struct pil_desc *pil)
{
struct q6v5_data *drv = container_of(pil, struct q6v5_data, desc);
pil_q6v5_halt_axi_port(pil, drv->axi_halt_base + MSS_Q6_HALT_BASE);
pil_q6v5_halt_axi_port(pil, drv->axi_halt_base + MSS_MODEM_HALT_BASE);
pil_q6v5_halt_axi_port(pil, drv->axi_halt_base + MSS_NC_HALT_BASE);
writel_relaxed(1, drv->restart_reg);
if (drv->is_booted) {
pil_mss_disable_clks(drv);
pil_mss_power_down(drv);
drv->is_booted = false;
}
return 0;
}
static int pil_mss_reset(struct pil_desc *pil)
{
struct q6v5_data *drv = container_of(pil, struct q6v5_data, desc);
struct platform_device *pdev = to_platform_device(pil->dev);
struct mba_data *mba = platform_get_drvdata(pdev);
phys_addr_t start_addr = pil_get_entry_addr(pil);
int ret;
/*
* Bring subsystem out of reset and enable required
* regulators and clocks.
*/
ret = pil_mss_power_up(drv);
if (ret)
goto err_power;
/* Deassert reset to subsystem and wait for propagation */
writel_relaxed(0, drv->restart_reg);
mb();
udelay(2);
ret = pil_mss_enable_clks(drv);
if (ret)
goto err_clks;
/* Program Image Address */
if (mba->self_auth) {
writel_relaxed(start_addr, mba->rmb_base + RMB_MBA_IMAGE);
/* Ensure write to RMB base occurs before reset is released. */
mb();
} else {
writel_relaxed((start_addr >> 4) & 0x0FFFFFF0,
drv->reg_base + QDSP6SS_RST_EVB);
}
ret = pil_q6v5_reset(pil);
if (ret)
goto err_q6v5_reset;
/* Wait for MBA to start. Check for PBL and MBA errors while waiting. */
if (mba->self_auth) {
ret = wait_for_mba_ready(drv);
if (ret)
goto err_auth;
}
drv->is_booted = true;
return 0;
err_auth:
pil_q6v5_shutdown(pil);
err_q6v5_reset:
pil_mss_disable_clks(drv);
err_clks:
pil_mss_power_down(drv);
err_power:
return ret;
}
static int pil_q6v5_mss_make_proxy_votes(struct pil_desc *pil)
{
int ret;
struct q6v5_data *drv = container_of(pil, struct q6v5_data, desc);
ret = regulator_set_voltage(drv->vreg_mx, VDD_MSS_UV, MAX_VDD_MX_UV);
if (ret) {
dev_err(pil->dev, "Failed to request vreg_mx voltage\n");
return ret;
}
ret = regulator_enable(drv->vreg_mx);
if (ret) {
dev_err(pil->dev, "Failed to enable vreg_mx\n");
regulator_set_voltage(drv->vreg_mx, 0, MAX_VDD_MX_UV);
return ret;
}
ret = pil_q6v5_make_proxy_votes(pil);
if (ret) {
regulator_disable(drv->vreg_mx);
regulator_set_voltage(drv->vreg_mx, 0, MAX_VDD_MX_UV);
}
return ret;
}
static void pil_q6v5_mss_remove_proxy_votes(struct pil_desc *pil)
{
struct q6v5_data *drv = container_of(pil, struct q6v5_data, desc);
pil_q6v5_remove_proxy_votes(pil);
regulator_disable(drv->vreg_mx);
regulator_set_voltage(drv->vreg_mx, 0, MAX_VDD_MX_UV);
}
static struct pil_reset_ops pil_mss_ops = {
.proxy_vote = pil_q6v5_mss_make_proxy_votes,
.proxy_unvote = pil_q6v5_mss_remove_proxy_votes,
.auth_and_reset = pil_mss_reset,
.shutdown = pil_mss_shutdown,
};
static int pil_mba_make_proxy_votes(struct pil_desc *pil)
{
int ret;
struct mba_data *drv = dev_get_drvdata(pil->dev);
ret = clk_prepare_enable(drv->q6->xo);
if (ret) {
dev_err(pil->dev, "Failed to enable XO\n");
return ret;
}
return 0;
}
static void pil_mba_remove_proxy_votes(struct pil_desc *pil)
{
struct mba_data *drv = dev_get_drvdata(pil->dev);
clk_disable_unprepare(drv->q6->xo);
}
static int pil_mba_init_image(struct pil_desc *pil,
const u8 *metadata, size_t size)
{
struct mba_data *drv = dev_get_drvdata(pil->dev);
void *mdata_virt;
dma_addr_t mdata_phys;
s32 status;
int ret;
/* Make metadata physically contiguous and 4K aligned. */
mdata_virt = dma_alloc_coherent(pil->dev, size, &mdata_phys,
GFP_KERNEL);
if (!mdata_virt) {
dev_err(pil->dev, "MBA metadata buffer allocation failed\n");
return -ENOMEM;
}
memcpy(mdata_virt, metadata, size);
/* wmb() ensures copy completes prior to starting authentication. */
wmb();
/* Initialize length counter to 0 */
writel_relaxed(0, drv->rmb_base + RMB_PMI_CODE_LENGTH);
drv->img_length = 0;
/* Pass address of meta-data to the MBA and perform authentication */
writel_relaxed(mdata_phys, drv->rmb_base + RMB_PMI_META_DATA);
writel_relaxed(CMD_META_DATA_READY, drv->rmb_base + RMB_MBA_COMMAND);
ret = readl_poll_timeout(drv->rmb_base + RMB_MBA_STATUS, status,
status == STATUS_META_DATA_AUTH_SUCCESS || status < 0,
POLL_INTERVAL_US, modem_auth_timeout_ms * 1000);
if (ret) {
dev_err(pil->dev, "MBA authentication of headers timed out\n");
} else if (status < 0) {
dev_err(pil->dev, "MBA returned error %d for headers\n",
status);
ret = -EINVAL;
}
dma_free_coherent(pil->dev, size, mdata_virt, mdata_phys);
return ret;
}
static int pil_mba_verify_blob(struct pil_desc *pil, phys_addr_t phy_addr,
size_t size)
{
struct mba_data *drv = dev_get_drvdata(pil->dev);
s32 status;
/* Begin image authentication */
if (drv->img_length == 0) {
writel_relaxed(phy_addr, drv->rmb_base + RMB_PMI_CODE_START);
writel_relaxed(CMD_LOAD_READY, drv->rmb_base + RMB_MBA_COMMAND);
}
/* Increment length counter */
drv->img_length += size;
writel_relaxed(drv->img_length, drv->rmb_base + RMB_PMI_CODE_LENGTH);
status = readl_relaxed(drv->rmb_base + RMB_MBA_STATUS);
if (status < 0) {
dev_err(pil->dev, "MBA returned error %d\n", status);
return -EINVAL;
}
return 0;
}
static int pil_mba_auth(struct pil_desc *pil)
{
struct mba_data *drv = dev_get_drvdata(pil->dev);
int ret;
s32 status;
/* Wait for all segments to be authenticated or an error to occur */
ret = readl_poll_timeout(drv->rmb_base + RMB_MBA_STATUS, status,
status == STATUS_AUTH_COMPLETE || status < 0,
50, modem_auth_timeout_ms * 1000);
if (ret) {
dev_err(pil->dev, "MBA authentication of image timed out\n");
} else if (status < 0) {
dev_err(pil->dev, "MBA returned error %d for image\n", status);
ret = -EINVAL;
}
return ret;
}
static struct pil_reset_ops pil_mba_ops = {
.init_image = pil_mba_init_image,
.proxy_vote = pil_mba_make_proxy_votes,
.proxy_unvote = pil_mba_remove_proxy_votes,
.verify_blob = pil_mba_verify_blob,
.auth_and_reset = pil_mba_auth,
};
#define subsys_to_drv(d) container_of(d, struct mba_data, subsys_desc)
static void log_modem_sfr(void)
{
u32 size;
char *smem_reason, reason[MAX_SSR_REASON_LEN];
smem_reason = smem_get_entry(SMEM_SSR_REASON_MSS0, &size);
if (!smem_reason || !size) {
pr_err("modem subsystem failure reason: (unknown, smem_get_entry failed).\n");
return;
}
if (!smem_reason[0]) {
pr_err("modem subsystem failure reason: (unknown, empty string found).\n");
return;
}
strlcpy(reason, smem_reason, min(size, sizeof(reason)));
pr_err("modem subsystem failure reason: %s.\n", reason);
smem_reason[0] = '\0';
wmb();
}
static void restart_modem(struct mba_data *drv)
{
log_modem_sfr();
drv->ignore_errors = true;
subsystem_restart_dev(drv->subsys);
}
static irqreturn_t modem_err_fatal_intr_handler(int irq, void *dev_id)
{
struct mba_data *drv = dev_id;
/* Ignore if we're the one that set the force stop GPIO */
if (drv->crash_shutdown)
return IRQ_HANDLED;
pr_err("Fatal error on the modem.\n");
subsys_set_crash_status(drv->subsys, true);
restart_modem(drv);
return IRQ_HANDLED;
}
static irqreturn_t modem_stop_ack_intr_handler(int irq, void *dev_id)
{
struct mba_data *drv = dev_id;
pr_info("Received stop ack interrupt from modem\n");
complete(&drv->stop_ack);
return IRQ_HANDLED;
}
static int modem_shutdown(const struct subsys_desc *subsys)
{
struct mba_data *drv = subsys_to_drv(subsys);
unsigned long ret;
if (subsys->is_not_loadable)
return 0;
if (!subsys_get_crash_status(drv->subsys)) {
gpio_set_value(drv->force_stop_gpio, 1);
ret = wait_for_completion_timeout(&drv->stop_ack,
msecs_to_jiffies(STOP_ACK_TIMEOUT_MS));
if (!ret)
pr_warn("Timed out on stop ack from modem.\n");
gpio_set_value(drv->force_stop_gpio, 0);
}
pil_shutdown(&drv->desc);
pil_shutdown(&drv->q6->desc);
return 0;
}
static int modem_powerup(const struct subsys_desc *subsys)
{
struct mba_data *drv = subsys_to_drv(subsys);
int ret;
if (subsys->is_not_loadable)
return 0;
/*
* At this time, the modem is shutdown. Therefore this function cannot
* run concurrently with either the watchdog bite error handler or the
* SMSM callback, making it safe to unset the flag below.
*/
INIT_COMPLETION(drv->stop_ack);
drv->ignore_errors = false;
ret = pil_boot(&drv->q6->desc);
if (ret)
return ret;
ret = pil_boot(&drv->desc);
if (ret)
pil_shutdown(&drv->q6->desc);
return ret;
}
static void modem_crash_shutdown(const struct subsys_desc *subsys)
{
struct mba_data *drv = subsys_to_drv(subsys);
drv->crash_shutdown = true;
if (!subsys_get_crash_status(drv->subsys)) {
gpio_set_value(drv->force_stop_gpio, 1);
mdelay(STOP_ACK_TIMEOUT_MS);
}
}
static struct ramdump_segment smem_segments[] = {
{0x0FA00000, 0x0FC00000 - 0x0FA00000},
};
static int modem_ramdump(int enable, const struct subsys_desc *subsys)
{
struct mba_data *drv = subsys_to_drv(subsys);
int ret;
if (!enable)
return 0;
ret = pil_boot(&drv->q6->desc);
if (ret)
return ret;
ret = pil_do_ramdump(&drv->desc, drv->ramdump_dev);
if (ret < 0) {
pr_err("Unable to dump modem fw memory (rc = %d).\n", ret);
goto out;
}
ret = do_elf_ramdump(drv->smem_ramdump_dev, smem_segments,
ARRAY_SIZE(smem_segments));
if (ret < 0) {
pr_err("Unable to dump smem memory (rc = %d).\n", ret);
goto out;
}
out:
pil_shutdown(&drv->q6->desc);
return ret;
}
static int adsp_state_notifier_fn(struct notifier_block *this,
unsigned long code, void *ss_handle)
{
int ret;
ret = sysmon_send_event(SYSMON_SS_MODEM, "adsp", code);
if (ret < 0)
pr_err("%s: sysmon_send_event failed (%d).", __func__, ret);
return NOTIFY_DONE;
}
static struct notifier_block adsp_state_notifier_block = {
.notifier_call = adsp_state_notifier_fn,
};
static irqreturn_t modem_wdog_bite_irq(int irq, void *dev_id)
{
struct mba_data *drv = dev_id;
if (drv->ignore_errors)
return IRQ_HANDLED;
pr_err("Watchdog bite received from modem software!\n");
subsys_set_crash_status(drv->subsys, true);
restart_modem(drv);
return IRQ_HANDLED;
}
static int mss_start(const struct subsys_desc *desc)
{
int ret;
struct mba_data *drv = subsys_to_drv(desc);
if (desc->is_not_loadable)
return 0;
INIT_COMPLETION(drv->stop_ack);
ret = pil_boot(&drv->q6->desc);
if (ret)
return ret;
ret = pil_boot(&drv->desc);
if (ret) {
pil_shutdown(&drv->q6->desc);
/*
* We know now that the unvote interrupt is not coming.
* Remove the proxy votes immediately.
*/
if (drv->q6->desc.proxy_unvote_irq)
pil_q6v5_mss_remove_proxy_votes(&drv->q6->desc);
}
return ret;
}
static void mss_stop(const struct subsys_desc *desc)
{
struct mba_data *drv = subsys_to_drv(desc);
if (desc->is_not_loadable)
return;
pil_shutdown(&drv->desc);
pil_shutdown(&drv->q6->desc);
}
static int __devinit pil_subsys_init(struct mba_data *drv,
struct platform_device *pdev)
{
int irq, ret;
irq = platform_get_irq(pdev, 0);
if (irq < 0)
return irq;
drv->subsys_desc.name = "modem";
drv->subsys_desc.dev = &pdev->dev;
drv->subsys_desc.owner = THIS_MODULE;
drv->subsys_desc.shutdown = modem_shutdown;
drv->subsys_desc.powerup = modem_powerup;
drv->subsys_desc.ramdump = modem_ramdump;
drv->subsys_desc.crash_shutdown = modem_crash_shutdown;
drv->subsys_desc.start = mss_start;
drv->subsys_desc.stop = mss_stop;
ret = of_get_named_gpio(pdev->dev.of_node,
"qcom,gpio-err-ready", 0);
if (ret < 0)
return ret;
ret = gpio_to_irq(ret);
if (ret < 0)
return ret;
drv->subsys_desc.err_ready_irq = ret;
drv->subsys = subsys_register(&drv->subsys_desc);
if (IS_ERR(drv->subsys)) {
ret = PTR_ERR(drv->subsys);
goto err_subsys;
}
drv->ramdump_dev = create_ramdump_device("modem", &pdev->dev);
if (!drv->ramdump_dev) {
pr_err("%s: Unable to create a modem ramdump device.\n",
__func__);
ret = -ENOMEM;
goto err_ramdump;
}
drv->smem_ramdump_dev = create_ramdump_device("smem-modem", &pdev->dev);
if (!drv->smem_ramdump_dev) {
pr_err("%s: Unable to create an smem ramdump device.\n",
__func__);
ret = -ENOMEM;
goto err_ramdump_smem;
}
ret = devm_request_irq(&pdev->dev, irq, modem_wdog_bite_irq,
IRQF_TRIGGER_RISING, "modem_wdog", drv);
if (ret < 0) {
dev_err(&pdev->dev, "Unable to request watchdog IRQ.\n");
goto err_irq;
}
ret = devm_request_irq(&pdev->dev, drv->err_fatal_irq,
modem_err_fatal_intr_handler,
IRQF_TRIGGER_RISING, "pil-mss", drv);
if (ret < 0) {
dev_err(&pdev->dev, "Unable to register SMP2P err fatal handler!\n");
goto err_irq;
}
ret = devm_request_irq(&pdev->dev, drv->stop_ack_irq,
modem_stop_ack_intr_handler,
IRQF_TRIGGER_RISING, "pil-mss", drv);
if (ret < 0) {
dev_err(&pdev->dev, "Unable to register SMP2P stop ack handler!\n");
goto err_irq;
}
drv->adsp_state_notifier = subsys_notif_register_notifier("adsp",
&adsp_state_notifier_block);
if (IS_ERR(drv->adsp_state_notifier)) {
ret = PTR_ERR(drv->adsp_state_notifier);
dev_err(&pdev->dev, "%s: Registration with the SSR notification driver failed (%d)",
__func__, ret);
goto err_irq;
}
return 0;
err_irq:
destroy_ramdump_device(drv->smem_ramdump_dev);
err_ramdump_smem:
destroy_ramdump_device(drv->ramdump_dev);
err_ramdump:
subsys_unregister(drv->subsys);
err_subsys:
return ret;
}
static int __devinit pil_mss_loadable_init(struct mba_data *drv,
struct platform_device *pdev)
{
struct q6v5_data *q6;
struct pil_desc *q6_desc, *mba_desc;
struct resource *res;
struct property *prop;
int ret;
int clk_ready = of_get_named_gpio(pdev->dev.of_node,
"qcom,gpio-proxy-unvote", 0);
if (clk_ready < 0)
return clk_ready;
clk_ready = gpio_to_irq(clk_ready);
if (clk_ready < 0)
return clk_ready;
q6 = pil_q6v5_init(pdev);
if (IS_ERR(q6))
return PTR_ERR(q6);
drv->q6 = q6;
q6_desc = &q6->desc;
q6_desc->ops = &pil_mss_ops;
q6_desc->owner = THIS_MODULE;
q6_desc->proxy_timeout = PROXY_TIMEOUT_MS;
q6_desc->proxy_unvote_irq = clk_ready;
drv->self_auth = of_property_read_bool(pdev->dev.of_node,
"qcom,pil-self-auth");
if (drv->self_auth) {
res = platform_get_resource_byname(pdev, IORESOURCE_MEM,
"rmb_base");
drv->rmb_base = devm_request_and_ioremap(&pdev->dev, res);
if (!drv->rmb_base)
return -ENOMEM;
}
res = platform_get_resource_byname(pdev, IORESOURCE_MEM, "restart_reg");
q6->restart_reg = devm_request_and_ioremap(&pdev->dev, res);
if (!q6->restart_reg)
return -ENOMEM;
q6->vreg = NULL;
prop = of_find_property(pdev->dev.of_node, "vdd_mss-supply", NULL);
if (prop) {
q6->vreg = devm_regulator_get(&pdev->dev, "vdd_mss");
if (IS_ERR(q6->vreg))
return PTR_ERR(q6->vreg);
ret = regulator_set_voltage(q6->vreg, VDD_MSS_UV,
MAX_VDD_MSS_UV);
if (ret)
dev_err(&pdev->dev, "Failed to set vreg voltage.\n");
ret = regulator_set_optimum_mode(q6->vreg, 100000);
if (ret < 0) {
dev_err(&pdev->dev, "Failed to set vreg mode.\n");
return ret;
}
}
q6->vreg_mx = devm_regulator_get(&pdev->dev, "vdd_mx");
if (IS_ERR(q6->vreg_mx))
return PTR_ERR(q6->vreg_mx);
res = platform_get_resource_byname(pdev, IORESOURCE_MEM,
"cxrail_bhs_reg");
if (res)
q6->cxrail_bhs = devm_ioremap(&pdev->dev, res->start,
resource_size(res));
q6->ahb_clk = devm_clk_get(&pdev->dev, "iface_clk");
if (IS_ERR(q6->ahb_clk))
return PTR_ERR(q6->ahb_clk);
q6->axi_clk = devm_clk_get(&pdev->dev, "bus_clk");
if (IS_ERR(q6->axi_clk))
return PTR_ERR(q6->axi_clk);
q6->rom_clk = devm_clk_get(&pdev->dev, "mem_clk");
if (IS_ERR(q6->rom_clk))
return PTR_ERR(q6->rom_clk);
ret = pil_desc_init(q6_desc);
if (ret)
return ret;
mba_desc = &drv->desc;
mba_desc->name = "modem";
mba_desc->dev = &pdev->dev;
mba_desc->ops = &pil_mba_ops;
mba_desc->owner = THIS_MODULE;
mba_desc->proxy_timeout = PROXY_TIMEOUT_MS;
mba_desc->proxy_unvote_irq = clk_ready;
ret = pil_desc_init(mba_desc);
if (ret)
goto err_mba_desc;
return 0;
err_mba_desc:
pil_desc_release(q6_desc);
return ret;
}
static int __devinit pil_mss_driver_probe(struct platform_device *pdev)
{
struct mba_data *drv;
int ret, err_fatal_gpio, is_not_loadable, stop_ack_gpio;
drv = devm_kzalloc(&pdev->dev, sizeof(*drv), GFP_KERNEL);
if (!drv)
return -ENOMEM;
platform_set_drvdata(pdev, drv);
is_not_loadable = of_property_read_bool(pdev->dev.of_node,
"qcom,is-not-loadable");
if (is_not_loadable) {
drv->subsys_desc.is_not_loadable = 1;
} else {
ret = pil_mss_loadable_init(drv, pdev);
if (ret)
return ret;
}
init_completion(&drv->stop_ack);
/* Get the IRQ from the GPIO for registering inbound handler */
err_fatal_gpio = of_get_named_gpio(pdev->dev.of_node,
"qcom,gpio-err-fatal", 0);
if (err_fatal_gpio < 0)
return err_fatal_gpio;
drv->err_fatal_irq = gpio_to_irq(err_fatal_gpio);
if (drv->err_fatal_irq < 0)
return drv->err_fatal_irq;
stop_ack_gpio = of_get_named_gpio(pdev->dev.of_node,
"qcom,gpio-stop-ack", 0);
if (stop_ack_gpio < 0)
return stop_ack_gpio;
ret = gpio_to_irq(stop_ack_gpio);
if (ret < 0)
return ret;
drv->stop_ack_irq = ret;
/* Get the GPIO pin for writing the outbound bits: add more as needed */
drv->force_stop_gpio = of_get_named_gpio(pdev->dev.of_node,
"qcom,gpio-force-stop", 0);
if (drv->force_stop_gpio < 0)
return drv->force_stop_gpio;
return pil_subsys_init(drv, pdev);
}
static int __devexit pil_mss_driver_exit(struct platform_device *pdev)
{
struct mba_data *drv = platform_get_drvdata(pdev);
subsys_notif_unregister_notifier(drv->adsp_state_notifier,
&adsp_state_notifier_block);
subsys_unregister(drv->subsys);
destroy_ramdump_device(drv->smem_ramdump_dev);
destroy_ramdump_device(drv->ramdump_dev);
pil_desc_release(&drv->desc);
pil_desc_release(&drv->q6->desc);
return 0;
}
static struct of_device_id mss_match_table[] = {
{ .compatible = "qcom,pil-q6v5-mss" },
{}
};
static struct platform_driver pil_mss_driver = {
.probe = pil_mss_driver_probe,
.remove = __devexit_p(pil_mss_driver_exit),
.driver = {
.name = "pil-q6v5-mss",
.of_match_table = mss_match_table,
.owner = THIS_MODULE,
},
};
static int __init pil_mss_init(void)
{
return platform_driver_register(&pil_mss_driver);
}
module_init(pil_mss_init);
static void __exit pil_mss_exit(void)
{
platform_driver_unregister(&pil_mss_driver);
}
module_exit(pil_mss_exit);
MODULE_DESCRIPTION("Support for booting modem subsystems with QDSP6v5 Hexagon processors");
MODULE_LICENSE("GPL v2");