From 071106ecf68c401173c58808b1cf5f68cc50d390 Mon Sep 17 00:00:00 2001
From: hc <hc@nodka.com>
Date: Fri, 05 Jan 2024 08:39:27 +0000
Subject: [PATCH] change wifi driver to cypress
---
kernel/drivers/media/platform/marvell-ccic/mmp-driver.c | 388 ++++++++++++++++---------------------------------------
1 files changed, 115 insertions(+), 273 deletions(-)
diff --git a/kernel/drivers/media/platform/marvell-ccic/mmp-driver.c b/kernel/drivers/media/platform/marvell-ccic/mmp-driver.c
index 6d9f0ab..63fce1b 100644
--- a/kernel/drivers/media/platform/marvell-ccic/mmp-driver.c
+++ b/kernel/drivers/media/platform/marvell-ccic/mmp-driver.c
@@ -1,18 +1,15 @@
+// SPDX-License-Identifier: GPL-2.0-only
/*
* Support for the camera device found on Marvell MMP processors; known
* to work with the Armada 610 as used in the OLPC 1.75 system.
*
* Copyright 2011 Jonathan Corbet <corbet@lwn.net>
- *
- * This file may be distributed under the terms of the GNU General
- * Public License, version 2.
+ * Copyright 2018 Lubomir Rintel <lkundrak@v3.sk>
*/
#include <linux/init.h>
#include <linux/kernel.h>
#include <linux/module.h>
-#include <linux/i2c.h>
-#include <linux/platform_data/i2c-gpio.h>
#include <linux/interrupt.h>
#include <linux/spinlock.h>
#include <linux/slab.h>
@@ -20,10 +17,11 @@
#include <media/v4l2-device.h>
#include <linux/platform_data/media/mmp-camera.h>
#include <linux/device.h>
+#include <linux/of.h>
+#include <linux/of_platform.h>
#include <linux/platform_device.h>
-#include <linux/gpio.h>
+#include <linux/pm_runtime.h>
#include <linux/io.h>
-#include <linux/delay.h>
#include <linux/list.h>
#include <linux/pm.h>
#include <linux/clk.h>
@@ -34,10 +32,9 @@
MODULE_AUTHOR("Jonathan Corbet <corbet@lwn.net>");
MODULE_LICENSE("GPL");
-static char *mcam_clks[] = {"CCICAXICLK", "CCICFUNCLK", "CCICPHYCLK"};
+static char *mcam_clks[] = {"axi", "func", "phy"};
struct mmp_camera {
- void __iomem *power_regs;
struct platform_device *pdev;
struct mcam_camera mcam;
struct list_head devlist;
@@ -48,161 +45,6 @@
static inline struct mmp_camera *mcam_to_cam(struct mcam_camera *mcam)
{
return container_of(mcam, struct mmp_camera, mcam);
-}
-
-/*
- * A silly little infrastructure so we can keep track of our devices.
- * Chances are that we will never have more than one of them, but
- * the Armada 610 *does* have two controllers...
- */
-
-static LIST_HEAD(mmpcam_devices);
-static struct mutex mmpcam_devices_lock;
-
-static void mmpcam_add_device(struct mmp_camera *cam)
-{
- mutex_lock(&mmpcam_devices_lock);
- list_add(&cam->devlist, &mmpcam_devices);
- mutex_unlock(&mmpcam_devices_lock);
-}
-
-static void mmpcam_remove_device(struct mmp_camera *cam)
-{
- mutex_lock(&mmpcam_devices_lock);
- list_del(&cam->devlist);
- mutex_unlock(&mmpcam_devices_lock);
-}
-
-/*
- * Platform dev remove passes us a platform_device, and there's
- * no handy unused drvdata to stash a backpointer in. So just
- * dig it out of our list.
- */
-static struct mmp_camera *mmpcam_find_device(struct platform_device *pdev)
-{
- struct mmp_camera *cam;
-
- mutex_lock(&mmpcam_devices_lock);
- list_for_each_entry(cam, &mmpcam_devices, devlist) {
- if (cam->pdev == pdev) {
- mutex_unlock(&mmpcam_devices_lock);
- return cam;
- }
- }
- mutex_unlock(&mmpcam_devices_lock);
- return NULL;
-}
-
-
-
-
-/*
- * Power-related registers; this almost certainly belongs
- * somewhere else.
- *
- * ARMADA 610 register manual, sec 7.2.1, p1842.
- */
-#define CPU_SUBSYS_PMU_BASE 0xd4282800
-#define REG_CCIC_DCGCR 0x28 /* CCIC dyn clock gate ctrl reg */
-#define REG_CCIC_CRCR 0x50 /* CCIC clk reset ctrl reg */
-#define REG_CCIC2_CRCR 0xf4 /* CCIC2 clk reset ctrl reg */
-
-static void mcam_clk_enable(struct mcam_camera *mcam)
-{
- unsigned int i;
-
- for (i = 0; i < NR_MCAM_CLK; i++) {
- if (!IS_ERR(mcam->clk[i]))
- clk_prepare_enable(mcam->clk[i]);
- }
-}
-
-static void mcam_clk_disable(struct mcam_camera *mcam)
-{
- int i;
-
- for (i = NR_MCAM_CLK - 1; i >= 0; i--) {
- if (!IS_ERR(mcam->clk[i]))
- clk_disable_unprepare(mcam->clk[i]);
- }
-}
-
-/*
- * Power control.
- */
-static void mmpcam_power_up_ctlr(struct mmp_camera *cam)
-{
- iowrite32(0x3f, cam->power_regs + REG_CCIC_DCGCR);
- iowrite32(0x3805b, cam->power_regs + REG_CCIC_CRCR);
- mdelay(1);
-}
-
-static int mmpcam_power_up(struct mcam_camera *mcam)
-{
- struct mmp_camera *cam = mcam_to_cam(mcam);
- struct mmp_camera_platform_data *pdata;
-
-/*
- * Turn on power and clocks to the controller.
- */
- mmpcam_power_up_ctlr(cam);
-/*
- * Provide power to the sensor.
- */
- mcam_reg_write(mcam, REG_CLKCTRL, 0x60000002);
- pdata = cam->pdev->dev.platform_data;
- gpio_set_value(pdata->sensor_power_gpio, 1);
- mdelay(5);
- mcam_reg_clear_bit(mcam, REG_CTRL1, 0x10000000);
- gpio_set_value(pdata->sensor_reset_gpio, 0); /* reset is active low */
- mdelay(5);
- gpio_set_value(pdata->sensor_reset_gpio, 1); /* reset is active low */
- mdelay(5);
-
- mcam_clk_enable(mcam);
-
- return 0;
-}
-
-static void mmpcam_power_down(struct mcam_camera *mcam)
-{
- struct mmp_camera *cam = mcam_to_cam(mcam);
- struct mmp_camera_platform_data *pdata;
-/*
- * Turn off clocks and set reset lines
- */
- iowrite32(0, cam->power_regs + REG_CCIC_DCGCR);
- iowrite32(0, cam->power_regs + REG_CCIC_CRCR);
-/*
- * Shut down the sensor.
- */
- pdata = cam->pdev->dev.platform_data;
- gpio_set_value(pdata->sensor_power_gpio, 0);
- gpio_set_value(pdata->sensor_reset_gpio, 0);
-
- mcam_clk_disable(mcam);
-}
-
-static void mcam_ctlr_reset(struct mcam_camera *mcam)
-{
- unsigned long val;
- struct mmp_camera *cam = mcam_to_cam(mcam);
-
- if (mcam->ccic_id) {
- /*
- * Using CCIC2
- */
- val = ioread32(cam->power_regs + REG_CCIC2_CRCR);
- iowrite32(val & ~0x2, cam->power_regs + REG_CCIC2_CRCR);
- iowrite32(val | 0x2, cam->power_regs + REG_CCIC2_CRCR);
- } else {
- /*
- * Using CCIC1
- */
- val = ioread32(cam->power_regs + REG_CCIC_CRCR);
- iowrite32(val & ~0x2, cam->power_regs + REG_CCIC_CRCR);
- iowrite32(val | 0x2, cam->power_regs + REG_CCIC_CRCR);
- }
}
/*
@@ -240,8 +82,8 @@
* bit 8 ~ bit 15: HS_SETTLE
* Time interval during which the HS
* receiver shall ignore any Data Lane
- * HS transistions.
- * The vaule has been calibrated on
+ * HS transitions.
+ * The value has been calibrated on
* different boards. It seems to work well.
*
* More detail please refer
@@ -336,42 +178,46 @@
struct mmp_camera *cam;
struct mcam_camera *mcam;
struct resource *res;
+ struct fwnode_handle *ep;
struct mmp_camera_platform_data *pdata;
int ret;
-
- pdata = pdev->dev.platform_data;
- if (!pdata)
- return -ENODEV;
cam = devm_kzalloc(&pdev->dev, sizeof(*cam), GFP_KERNEL);
if (cam == NULL)
return -ENOMEM;
+ platform_set_drvdata(pdev, cam);
cam->pdev = pdev;
INIT_LIST_HEAD(&cam->devlist);
mcam = &cam->mcam;
- mcam->plat_power_up = mmpcam_power_up;
- mcam->plat_power_down = mmpcam_power_down;
- mcam->ctlr_reset = mcam_ctlr_reset;
mcam->calc_dphy = mmpcam_calc_dphy;
mcam->dev = &pdev->dev;
- mcam->use_smbus = 0;
- mcam->ccic_id = pdev->id;
- mcam->mclk_min = pdata->mclk_min;
- mcam->mclk_src = pdata->mclk_src;
- mcam->mclk_div = pdata->mclk_div;
- mcam->bus_type = pdata->bus_type;
- mcam->dphy = pdata->dphy;
- if (mcam->bus_type == V4L2_MBUS_CSI2) {
+ pdata = pdev->dev.platform_data;
+ if (pdata) {
+ mcam->mclk_src = pdata->mclk_src;
+ mcam->mclk_div = pdata->mclk_div;
+ mcam->bus_type = pdata->bus_type;
+ mcam->dphy = pdata->dphy;
+ mcam->lane = pdata->lane;
+ } else {
+ /*
+ * These are values that used to be hardcoded in mcam-core and
+ * work well on a OLPC XO 1.75 with a parallel bus sensor.
+ * If it turns out other setups make sense, the values should
+ * be obtained from the device tree.
+ */
+ mcam->mclk_src = 3;
+ mcam->mclk_div = 2;
+ }
+ if (mcam->bus_type == V4L2_MBUS_CSI2_DPHY) {
cam->mipi_clk = devm_clk_get(mcam->dev, "mipi");
if ((IS_ERR(cam->mipi_clk) && mcam->dphy[2] == 0))
return PTR_ERR(cam->mipi_clk);
}
mcam->mipi_enabled = false;
- mcam->lane = pdata->lane;
mcam->chip_id = MCAM_ARMADA610;
mcam->buffer_mode = B_DMA_sg;
- strlcpy(mcam->bus_info, "platform:mmp-camera", sizeof(mcam->bus_info));
+ strscpy(mcam->bus_info, "platform:mmp-camera", sizeof(mcam->bus_info));
spin_lock_init(&mcam->dev_lock);
/*
* Get our I/O memory.
@@ -381,54 +227,39 @@
if (IS_ERR(mcam->regs))
return PTR_ERR(mcam->regs);
mcam->regs_size = resource_size(res);
- /*
- * Power/clock memory is elsewhere; get it too. Perhaps this
- * should really be managed outside of this driver?
- */
- res = platform_get_resource(pdev, IORESOURCE_MEM, 1);
- cam->power_regs = devm_ioremap_resource(&pdev->dev, res);
- if (IS_ERR(cam->power_regs))
- return PTR_ERR(cam->power_regs);
- /*
- * Find the i2c adapter. This assumes, of course, that the
- * i2c bus is already up and functioning.
- */
- mcam->i2c_adapter = platform_get_drvdata(pdata->i2c_device);
- if (mcam->i2c_adapter == NULL) {
- dev_err(&pdev->dev, "No i2c adapter\n");
- return -ENODEV;
- }
- /*
- * Sensor GPIO pins.
- */
- ret = devm_gpio_request(&pdev->dev, pdata->sensor_power_gpio,
- "cam-power");
- if (ret) {
- dev_err(&pdev->dev, "Can't get sensor power gpio %d",
- pdata->sensor_power_gpio);
- return ret;
- }
- gpio_direction_output(pdata->sensor_power_gpio, 0);
- ret = devm_gpio_request(&pdev->dev, pdata->sensor_reset_gpio,
- "cam-reset");
- if (ret) {
- dev_err(&pdev->dev, "Can't get sensor reset gpio %d",
- pdata->sensor_reset_gpio);
- return ret;
- }
- gpio_direction_output(pdata->sensor_reset_gpio, 0);
mcam_init_clk(mcam);
/*
- * Power the device up and hand it off to the core.
+ * Create a match of the sensor against its OF node.
*/
- ret = mmpcam_power_up(mcam);
- if (ret)
- return ret;
+ ep = fwnode_graph_get_next_endpoint(of_fwnode_handle(pdev->dev.of_node),
+ NULL);
+ if (!ep)
+ return -ENODEV;
+
+ mcam->asd.match_type = V4L2_ASYNC_MATCH_FWNODE;
+ mcam->asd.match.fwnode = fwnode_graph_get_remote_port_parent(ep);
+
+ fwnode_handle_put(ep);
+
+ /*
+ * Register the device with the core.
+ */
ret = mccic_register(mcam);
if (ret)
- goto out_power_down;
+ return ret;
+
+ /*
+ * Add OF clock provider.
+ */
+ ret = of_clk_add_provider(pdev->dev.of_node, of_clk_src_simple_get,
+ mcam->mclk);
+ if (ret) {
+ dev_err(&pdev->dev, "can't add DT clock provider\n");
+ goto out;
+ }
+
/*
* Finally, set up our IRQ now that the core is ready to
* deal with it.
@@ -436,20 +267,20 @@
res = platform_get_resource(pdev, IORESOURCE_IRQ, 0);
if (res == NULL) {
ret = -ENODEV;
- goto out_unregister;
+ goto out;
}
cam->irq = res->start;
ret = devm_request_irq(&pdev->dev, cam->irq, mmpcam_irq, IRQF_SHARED,
"mmp-camera", mcam);
- if (ret == 0) {
- mmpcam_add_device(cam);
- return 0;
- }
+ if (ret)
+ goto out;
-out_unregister:
+ pm_runtime_enable(&pdev->dev);
+ return 0;
+out:
+ fwnode_handle_put(mcam->asd.match.fwnode);
mccic_shutdown(mcam);
-out_power_down:
- mmpcam_power_down(mcam);
+
return ret;
}
@@ -458,15 +289,14 @@
{
struct mcam_camera *mcam = &cam->mcam;
- mmpcam_remove_device(cam);
mccic_shutdown(mcam);
- mmpcam_power_down(mcam);
+ pm_runtime_force_suspend(mcam->dev);
return 0;
}
static int mmpcam_platform_remove(struct platform_device *pdev)
{
- struct mmp_camera *cam = mmpcam_find_device(pdev);
+ struct mmp_camera *cam = platform_get_drvdata(pdev);
if (cam == NULL)
return -ENODEV;
@@ -476,62 +306,74 @@
/*
* Suspend/resume support.
*/
+
#ifdef CONFIG_PM
-
-static int mmpcam_suspend(struct platform_device *pdev, pm_message_t state)
+static int mmpcam_runtime_resume(struct device *dev)
{
- struct mmp_camera *cam = mmpcam_find_device(pdev);
+ struct mmp_camera *cam = dev_get_drvdata(dev);
+ struct mcam_camera *mcam = &cam->mcam;
+ unsigned int i;
- if (state.event != PM_EVENT_SUSPEND)
- return 0;
- mccic_suspend(&cam->mcam);
+ for (i = 0; i < NR_MCAM_CLK; i++) {
+ if (!IS_ERR(mcam->clk[i]))
+ clk_prepare_enable(mcam->clk[i]);
+ }
+
return 0;
}
-static int mmpcam_resume(struct platform_device *pdev)
+static int mmpcam_runtime_suspend(struct device *dev)
{
- struct mmp_camera *cam = mmpcam_find_device(pdev);
+ struct mmp_camera *cam = dev_get_drvdata(dev);
+ struct mcam_camera *mcam = &cam->mcam;
+ int i;
- /*
- * Power up unconditionally just in case the core tries to
- * touch a register even if nothing was active before; trust
- * me, it's better this way.
- */
- mmpcam_power_up_ctlr(cam);
- return mccic_resume(&cam->mcam);
+ for (i = NR_MCAM_CLK - 1; i >= 0; i--) {
+ if (!IS_ERR(mcam->clk[i]))
+ clk_disable_unprepare(mcam->clk[i]);
+ }
+
+ return 0;
}
+static int __maybe_unused mmpcam_suspend(struct device *dev)
+{
+ struct mmp_camera *cam = dev_get_drvdata(dev);
+
+ if (!pm_runtime_suspended(dev))
+ mccic_suspend(&cam->mcam);
+ return 0;
+}
+
+static int __maybe_unused mmpcam_resume(struct device *dev)
+{
+ struct mmp_camera *cam = dev_get_drvdata(dev);
+
+ if (!pm_runtime_suspended(dev))
+ return mccic_resume(&cam->mcam);
+ return 0;
+}
#endif
+static const struct dev_pm_ops mmpcam_pm_ops = {
+ SET_RUNTIME_PM_OPS(mmpcam_runtime_suspend, mmpcam_runtime_resume, NULL)
+ SET_SYSTEM_SLEEP_PM_OPS(mmpcam_suspend, mmpcam_resume)
+};
+
+static const struct of_device_id mmpcam_of_match[] = {
+ { .compatible = "marvell,mmp2-ccic", },
+ {},
+};
+MODULE_DEVICE_TABLE(of, mmpcam_of_match);
static struct platform_driver mmpcam_driver = {
.probe = mmpcam_probe,
.remove = mmpcam_platform_remove,
-#ifdef CONFIG_PM
- .suspend = mmpcam_suspend,
- .resume = mmpcam_resume,
-#endif
.driver = {
.name = "mmp-camera",
+ .of_match_table = of_match_ptr(mmpcam_of_match),
+ .pm = &mmpcam_pm_ops,
}
};
-
-static int __init mmpcam_init_module(void)
-{
- mutex_init(&mmpcam_devices_lock);
- return platform_driver_register(&mmpcam_driver);
-}
-
-static void __exit mmpcam_exit_module(void)
-{
- platform_driver_unregister(&mmpcam_driver);
- /*
- * platform_driver_unregister() should have emptied the list
- */
- if (!list_empty(&mmpcam_devices))
- printk(KERN_ERR "mmp_camera leaving devices behind\n");
-}
-
-module_init(mmpcam_init_module);
-module_exit(mmpcam_exit_module);
+module_platform_driver(mmpcam_driver);
--
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