arch/arm/mach-msm/pil-q6v4-mss.c - kernel/msm - Gitiles

 /* Copyright (c) 2012, 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/regulator/consumer.h>
 #include <linux/err.h>
 #include <linux/io.h>
 #include <linux/delay.h>
 #include <linux/clk.h>

 #include <mach/msm_iomap.h>

 #include "peripheral-loader.h"
 #include "pil-q6v4.h"
 #include "scm-pas.h"

 #define MSS_S_HCLK_CTL		(MSM_CLK_CTL_BASE + 0x2C70)
 #define MSS_SLP_CLK_CTL		(MSM_CLK_CTL_BASE + 0x2C60)
 #define SFAB_MSS_M_ACLK_CTL	(MSM_CLK_CTL_BASE + 0x2340)
 #define SFAB_MSS_S_HCLK_CTL	(MSM_CLK_CTL_BASE + 0x2C00)
 #define MSS_RESET		(MSM_CLK_CTL_BASE + 0x2C64)

 struct q6v4_modem {
 	struct q6v4_data q6_fw;
 	struct q6v4_data q6_sw;
 	void __iomem *modem_base;
 };

 static DEFINE_MUTEX(pil_q6v4_modem_lock);
 static unsigned pil_q6v4_modem_count;

 /* Bring modem subsystem out of reset */
 static void pil_q6v4_init_modem(void __iomem *base, void __iomem *jtag_clk)
 {
 	mutex_lock(&pil_q6v4_modem_lock);
 	if (!pil_q6v4_modem_count) {
 		/* Enable MSS clocks */
 		writel_relaxed(0x10, SFAB_MSS_M_ACLK_CTL);
 		writel_relaxed(0x10, SFAB_MSS_S_HCLK_CTL);
 		writel_relaxed(0x10, MSS_S_HCLK_CTL);
 		writel_relaxed(0x10, MSS_SLP_CLK_CTL);
 		/* Wait for clocks to enable */
 		mb();
 		udelay(10);

 		/* De-assert MSS reset */
 		writel_relaxed(0x0, MSS_RESET);
 		mb();
 		udelay(10);
 		/* Enable MSS */
 		writel_relaxed(0x7, base);
 	}

 	/* Enable JTAG clocks */
 	/* TODO: Remove if/when Q6 software enables them? */
 	writel_relaxed(0x10, jtag_clk);

 	pil_q6v4_modem_count++;
 	mutex_unlock(&pil_q6v4_modem_lock);
 }

 /* Put modem subsystem back into reset */
 static void pil_q6v4_shutdown_modem(void)
 {
 	mutex_lock(&pil_q6v4_modem_lock);
 	if (pil_q6v4_modem_count)
 		pil_q6v4_modem_count--;
 	if (pil_q6v4_modem_count == 0)
 		writel_relaxed(0x1, MSS_RESET);
 	mutex_unlock(&pil_q6v4_modem_lock);
 }

 static int pil_q6v4_modem_boot(struct pil_desc *pil)
 {
 	struct q6v4_data *drv = pil_to_q6v4_data(pil);
 	struct q6v4_modem *mdm = dev_get_drvdata(pil->dev);
 	int err;

 	err = pil_q6v4_power_up(drv);
 	if (err)
 		return err;

 	pil_q6v4_init_modem(mdm->modem_base, drv->jtag_clk_reg);
 	return pil_q6v4_boot(pil);
 }

 static int pil_q6v4_modem_shutdown(struct pil_desc *pil)
 {
 	struct q6v4_data *drv = pil_to_q6v4_data(pil);
 	int ret;

 	ret = pil_q6v4_shutdown(pil);
 	if (ret)
 		return ret;
 	pil_q6v4_shutdown_modem();
 	pil_q6v4_power_down(drv);
 	return 0;
 }

 static struct pil_reset_ops pil_q6v4_modem_ops = {
 	.init_image = pil_q6v4_init_image,
 	.auth_and_reset = pil_q6v4_modem_boot,
 	.shutdown = pil_q6v4_modem_shutdown,
 	.proxy_vote = pil_q6v4_make_proxy_votes,
 	.proxy_unvote = pil_q6v4_remove_proxy_votes,
 };

 static struct pil_reset_ops pil_q6v4_modem_ops_trusted = {
 	.init_image = pil_q6v4_init_image_trusted,
 	.auth_and_reset = pil_q6v4_boot_trusted,
 	.shutdown = pil_q6v4_shutdown_trusted,
 	.proxy_vote = pil_q6v4_make_proxy_votes,
 	.proxy_unvote = pil_q6v4_remove_proxy_votes,
 };

 static int __devinit
 pil_q6v4_proc_init(struct q6v4_data *drv, struct platform_device *pdev, int i)
 {
 	static const char *name[2] = { "fw", "sw" };
 	const struct pil_q6v4_pdata *pdata_p = pdev->dev.platform_data;
 	const struct pil_q6v4_pdata *pdata = pdata_p + i;
 	char reg_name[12];
 	struct pil_desc *desc;
 	struct resource *res;

 	res = platform_get_resource(pdev, IORESOURCE_MEM, 1 + i);
 	if (!res)
 		return -EINVAL;

 	drv->base = devm_ioremap(&pdev->dev, res->start, resource_size(res));
 	if (!drv->base)
 		return -ENOMEM;

 	snprintf(reg_name, sizeof(reg_name), "%s_core_vdd", name[i]);
 	drv->vreg = devm_regulator_get(&pdev->dev, reg_name);
 	if (IS_ERR(drv->vreg))
 		return PTR_ERR(drv->vreg);

 	drv->xo = devm_clk_get(&pdev->dev, "xo");
 	if (IS_ERR(drv->xo))
 		return PTR_ERR(drv->xo);

 	desc = &drv->desc;
 	desc->name = pdata->name;
 	desc->depends_on = pdata->depends;
 	desc->dev = &pdev->dev;
 	desc->owner = THIS_MODULE;
 	desc->proxy_timeout = 10000;
 	pil_q6v4_init(drv, pdata);

 	if (pas_supported(pdata->pas_id) > 0) {
 		desc->ops = &pil_q6v4_modem_ops_trusted;
 		dev_info(&pdev->dev, "using secure boot for %s\n", name[i]);
 	} else {
 		desc->ops = &pil_q6v4_modem_ops;
 		dev_info(&pdev->dev, "using non-secure boot for %s\n", name[i]);
 	}
 	return 0;
 }

 static int __devinit pil_q6v4_modem_driver_probe(struct platform_device *pdev)
 {
 	struct q6v4_data *drv_fw, *drv_sw;
 	struct q6v4_modem *drv;
 	struct resource *res;
 	struct regulator *pll_supply;
 	int ret;

 	drv = devm_kzalloc(&pdev->dev, sizeof(*drv), GFP_KERNEL);
 	if (!drv)
 		return -ENOMEM;
 	platform_set_drvdata(pdev, drv);

 	drv_fw = &drv->q6_fw;
 	drv_sw = &drv->q6_sw;

 	ret = pil_q6v4_proc_init(drv_fw, pdev, 0);
 	if (ret)
 		return ret;

 	ret = pil_q6v4_proc_init(drv_sw, pdev, 1);
 	if (ret)
 		return ret;

 	pll_supply = devm_regulator_get(&pdev->dev, "pll_vdd");
 	drv_fw->pll_supply = drv_sw->pll_supply = pll_supply;
 	if (IS_ERR(pll_supply))
 		return PTR_ERR(pll_supply);

 	ret = regulator_set_voltage(pll_supply, 1800000, 1800000);
 	if (ret) {
 		dev_err(&pdev->dev, "failed to set pll voltage\n");
 		return ret;
 	}

 	ret = regulator_set_optimum_mode(pll_supply, 100000);
 	if (ret < 0) {
 		dev_err(&pdev->dev, "failed to set pll optimum mode\n");
 		return ret;
 	}

 	res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
 	if (!res)
 		return -EINVAL;

 	drv->modem_base = devm_ioremap(&pdev->dev, res->start,
 			resource_size(res));
 	if (!drv->modem_base)
 		return -ENOMEM;

 	drv_fw->pil = msm_pil_register(&drv_fw->desc);
 	if (IS_ERR(drv_fw->pil))
 		return PTR_ERR(drv_fw->pil);

 	drv_sw->pil = msm_pil_register(&drv_sw->desc);
 	if (IS_ERR(drv_sw->pil)) {
 		msm_pil_unregister(drv_fw->pil);
 		return PTR_ERR(drv_sw->pil);
 	}
 	return 0;
 }

 static int __devexit pil_q6v4_modem_driver_exit(struct platform_device *pdev)
 {
 	struct q6v4_modem *drv = platform_get_drvdata(pdev);
 	msm_pil_unregister(drv->q6_sw.pil);
 	msm_pil_unregister(drv->q6_fw.pil);
 	return 0;
 }

 static struct platform_driver pil_q6v4_modem_driver = {
 	.probe = pil_q6v4_modem_driver_probe,
 	.remove = __devexit_p(pil_q6v4_modem_driver_exit),
 	.driver = {
 		.name = "pil-q6v4-modem",
 		.owner = THIS_MODULE,
 	},
 };

 static int __init pil_q6v4_modem_init(void)
 {
 	return platform_driver_register(&pil_q6v4_modem_driver);
 }
 module_init(pil_q6v4_modem_init);

 static void __exit pil_q6v4_modem_exit(void)
 {
 	platform_driver_unregister(&pil_q6v4_modem_driver);
 }
 module_exit(pil_q6v4_modem_exit);

 MODULE_DESCRIPTION("Support for booting QDSP6v4 (Hexagon) processors");
 MODULE_LICENSE("GPL v2");
	/* Copyright (c) 2012, 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/regulator/consumer.h>
	#include <linux/err.h>
	#include <linux/io.h>
	#include <linux/delay.h>
	#include <linux/clk.h>

	#include <mach/msm_iomap.h>

	#include "peripheral-loader.h"
	#include "pil-q6v4.h"
	#include "scm-pas.h"

	#define MSS_S_HCLK_CTL (MSM_CLK_CTL_BASE + 0x2C70)
	#define MSS_SLP_CLK_CTL (MSM_CLK_CTL_BASE + 0x2C60)
	#define SFAB_MSS_M_ACLK_CTL (MSM_CLK_CTL_BASE + 0x2340)
	#define SFAB_MSS_S_HCLK_CTL (MSM_CLK_CTL_BASE + 0x2C00)
	#define MSS_RESET (MSM_CLK_CTL_BASE + 0x2C64)

	struct q6v4_modem {
	struct q6v4_data q6_fw;
	struct q6v4_data q6_sw;
	void __iomem *modem_base;
	};

	static DEFINE_MUTEX(pil_q6v4_modem_lock);
	static unsigned pil_q6v4_modem_count;

	/* Bring modem subsystem out of reset */
	static void pil_q6v4_init_modem(void __iomem base, void __iomem jtag_clk)
	{
	mutex_lock(&pil_q6v4_modem_lock);
	if (!pil_q6v4_modem_count) {
	/* Enable MSS clocks */
	writel_relaxed(0x10, SFAB_MSS_M_ACLK_CTL);
	writel_relaxed(0x10, SFAB_MSS_S_HCLK_CTL);
	writel_relaxed(0x10, MSS_S_HCLK_CTL);
	writel_relaxed(0x10, MSS_SLP_CLK_CTL);
	/* Wait for clocks to enable */
	mb();
	udelay(10);

	/* De-assert MSS reset */
	writel_relaxed(0x0, MSS_RESET);
	mb();
	udelay(10);
	/* Enable MSS */
	writel_relaxed(0x7, base);
	}

	/* Enable JTAG clocks */
	/* TODO: Remove if/when Q6 software enables them? */
	writel_relaxed(0x10, jtag_clk);

	pil_q6v4_modem_count++;
	mutex_unlock(&pil_q6v4_modem_lock);
	}

	/* Put modem subsystem back into reset */
	static void pil_q6v4_shutdown_modem(void)
	{
	mutex_lock(&pil_q6v4_modem_lock);
	if (pil_q6v4_modem_count)
	pil_q6v4_modem_count--;
	if (pil_q6v4_modem_count == 0)
	writel_relaxed(0x1, MSS_RESET);
	mutex_unlock(&pil_q6v4_modem_lock);
	}

	static int pil_q6v4_modem_boot(struct pil_desc *pil)
	{
	struct q6v4_data *drv = pil_to_q6v4_data(pil);
	struct q6v4_modem *mdm = dev_get_drvdata(pil->dev);
	int err;

	err = pil_q6v4_power_up(drv);
	if (err)
	return err;

	pil_q6v4_init_modem(mdm->modem_base, drv->jtag_clk_reg);
	return pil_q6v4_boot(pil);
	}

	static int pil_q6v4_modem_shutdown(struct pil_desc *pil)
	{
	struct q6v4_data *drv = pil_to_q6v4_data(pil);
	int ret;

	ret = pil_q6v4_shutdown(pil);
	if (ret)
	return ret;
	pil_q6v4_shutdown_modem();
	pil_q6v4_power_down(drv);
	return 0;
	}

	static struct pil_reset_ops pil_q6v4_modem_ops = {
	.init_image = pil_q6v4_init_image,
	.auth_and_reset = pil_q6v4_modem_boot,
	.shutdown = pil_q6v4_modem_shutdown,
	.proxy_vote = pil_q6v4_make_proxy_votes,
	.proxy_unvote = pil_q6v4_remove_proxy_votes,
	};

	static struct pil_reset_ops pil_q6v4_modem_ops_trusted = {
	.init_image = pil_q6v4_init_image_trusted,
	.auth_and_reset = pil_q6v4_boot_trusted,
	.shutdown = pil_q6v4_shutdown_trusted,
	.proxy_vote = pil_q6v4_make_proxy_votes,
	.proxy_unvote = pil_q6v4_remove_proxy_votes,
	};

	static int __devinit
	pil_q6v4_proc_init(struct q6v4_data drv, struct platform_device pdev, int i)
	{
	static const char *name[2] = { "fw", "sw" };
	const struct pil_q6v4_pdata *pdata_p = pdev->dev.platform_data;
	const struct pil_q6v4_pdata *pdata = pdata_p + i;
	char reg_name[12];
	struct pil_desc *desc;
	struct resource *res;

	res = platform_get_resource(pdev, IORESOURCE_MEM, 1 + i);
	if (!res)
	return -EINVAL;

	drv->base = devm_ioremap(&pdev->dev, res->start, resource_size(res));
	if (!drv->base)
	return -ENOMEM;

	snprintf(reg_name, sizeof(reg_name), "%s_core_vdd", name[i]);
	drv->vreg = devm_regulator_get(&pdev->dev, reg_name);
	if (IS_ERR(drv->vreg))
	return PTR_ERR(drv->vreg);

	drv->xo = devm_clk_get(&pdev->dev, "xo");
	if (IS_ERR(drv->xo))
	return PTR_ERR(drv->xo);

	desc = &drv->desc;
	desc->name = pdata->name;
	desc->depends_on = pdata->depends;
	desc->dev = &pdev->dev;
	desc->owner = THIS_MODULE;
	desc->proxy_timeout = 10000;
	pil_q6v4_init(drv, pdata);

	if (pas_supported(pdata->pas_id) > 0) {
	desc->ops = &pil_q6v4_modem_ops_trusted;
	dev_info(&pdev->dev, "using secure boot for %s\n", name[i]);
	} else {
	desc->ops = &pil_q6v4_modem_ops;
	dev_info(&pdev->dev, "using non-secure boot for %s\n", name[i]);
	}
	return 0;
	}

	static int __devinit pil_q6v4_modem_driver_probe(struct platform_device *pdev)
	{
	struct q6v4_data drv_fw, drv_sw;
	struct q6v4_modem *drv;
	struct resource *res;
	struct regulator *pll_supply;
	int ret;

	drv = devm_kzalloc(&pdev->dev, sizeof(*drv), GFP_KERNEL);
	if (!drv)
	return -ENOMEM;
	platform_set_drvdata(pdev, drv);

	drv_fw = &drv->q6_fw;
	drv_sw = &drv->q6_sw;

	ret = pil_q6v4_proc_init(drv_fw, pdev, 0);
	if (ret)
	return ret;

	ret = pil_q6v4_proc_init(drv_sw, pdev, 1);
	if (ret)
	return ret;

	pll_supply = devm_regulator_get(&pdev->dev, "pll_vdd");
	drv_fw->pll_supply = drv_sw->pll_supply = pll_supply;
	if (IS_ERR(pll_supply))
	return PTR_ERR(pll_supply);

	ret = regulator_set_voltage(pll_supply, 1800000, 1800000);
	if (ret) {
	dev_err(&pdev->dev, "failed to set pll voltage\n");
	return ret;
	}

	ret = regulator_set_optimum_mode(pll_supply, 100000);
	if (ret < 0) {
	dev_err(&pdev->dev, "failed to set pll optimum mode\n");
	return ret;
	}

	res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
	if (!res)
	return -EINVAL;

	drv->modem_base = devm_ioremap(&pdev->dev, res->start,
	resource_size(res));
	if (!drv->modem_base)
	return -ENOMEM;

	drv_fw->pil = msm_pil_register(&drv_fw->desc);
	if (IS_ERR(drv_fw->pil))
	return PTR_ERR(drv_fw->pil);

	drv_sw->pil = msm_pil_register(&drv_sw->desc);
	if (IS_ERR(drv_sw->pil)) {
	msm_pil_unregister(drv_fw->pil);
	return PTR_ERR(drv_sw->pil);
	}
	return 0;
	}

	static int __devexit pil_q6v4_modem_driver_exit(struct platform_device *pdev)
	{
	struct q6v4_modem *drv = platform_get_drvdata(pdev);
	msm_pil_unregister(drv->q6_sw.pil);
	msm_pil_unregister(drv->q6_fw.pil);
	return 0;
	}

	static struct platform_driver pil_q6v4_modem_driver = {
	.probe = pil_q6v4_modem_driver_probe,
	.remove = __devexit_p(pil_q6v4_modem_driver_exit),
	.driver = {
	.name = "pil-q6v4-modem",
	.owner = THIS_MODULE,
	},
	};

	static int __init pil_q6v4_modem_init(void)
	{
	return platform_driver_register(&pil_q6v4_modem_driver);
	}
	module_init(pil_q6v4_modem_init);

	static void __exit pil_q6v4_modem_exit(void)
	{
	platform_driver_unregister(&pil_q6v4_modem_driver);
	}
	module_exit(pil_q6v4_modem_exit);

	MODULE_DESCRIPTION("Support for booting QDSP6v4 (Hexagon) processors");
	MODULE_LICENSE("GPL v2");