This driver is for the FIMC-IS IP available in Samsung Exynos5
SoC onwards. This patch adds the core files for the new driver.
Signed-off-by: Arun Kumar K <arun.kk@xxxxxxxxxxx>
Signed-off-by: Kilyeon Im <kilyeon.im@xxxxxxxxxxx>
Reviewed-by: Sylwester Nawrocki <s.nawrocki@xxxxxxxxxxx>
---
drivers/media/platform/exynos5-is/fimc-is-core.c | 410 ++++++++++++++++++++++
drivers/media/platform/exynos5-is/fimc-is-core.h | 132 +++++++
2 files changed, 542 insertions(+)
create mode 100644 drivers/media/platform/exynos5-is/fimc-is-core.c
create mode 100644 drivers/media/platform/exynos5-is/fimc-is-core.h
diff --git a/drivers/media/platform/exynos5-is/fimc-is-core.c b/drivers/media/platform/exynos5-is/fimc-is-core.c
new file mode 100644
index 0000000..2b116d0
--- /dev/null
+++ b/drivers/media/platform/exynos5-is/fimc-is-core.c
@@ -0,0 +1,410 @@
+/*
+ * Samsung EXYNOS5 FIMC-IS (Imaging Subsystem) driver
+*
+ * Copyright (C) 2013 Samsung Electronics Co., Ltd.
+ * Arun Kumar K <arun.kk@xxxxxxxxxxx>
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License version 2 as
+ * published by the Free Software Foundation.
+ */
+
+#include <linux/bug.h>
+#include <linux/ctype.h>
+#include <linux/device.h>
+#include <linux/debugfs.h>
+#include <linux/delay.h>
+#include <linux/errno.h>
+#include <linux/err.h>
+#include <linux/firmware.h>
+#include <linux/fs.h>
+#include <linux/gpio.h>
+#include <linux/interrupt.h>
+#include <linux/kernel.h>
+#include <linux/list.h>
+#include <linux/module.h>
+#include <linux/of.h>
+#include <linux/of_gpio.h>
+#include <linux/of_address.h>
+#include <linux/of_platform.h>
+#include <linux/of_irq.h>
+#include <linux/pinctrl/consumer.h>
+#include <linux/platform_device.h>
+#include <linux/pm_runtime.h>
+#include <linux/slab.h>
+#include <linux/types.h>
+#include <linux/videodev2.h>
+
+#include <media/v4l2-device.h>
+#include <media/v4l2-ioctl.h>
+#include <media/v4l2-mem2mem.h>
+#include <media/v4l2-of.h>
+#include <media/videobuf2-core.h>
+#include <media/videobuf2-dma-contig.h>
+
+#include "fimc-is.h"
+#include "fimc-is-i2c.h"
+
+#define CLK_MCU_ISP_DIV0_FREQ (200 * 1000000)
+#define CLK_MCU_ISP_DIV1_FREQ (100 * 1000000)
+#define CLK_ISP_DIV0_FREQ (134 * 1000000)
+#define CLK_ISP_DIV1_FREQ (68 * 1000000)
+#define CLK_ISP_DIVMPWM_FREQ (34 * 1000000)
+
+static const char * const fimc_is_clock_name[] = {
+ [IS_CLK_ISP] = "isp",
+ [IS_CLK_MCU_ISP] = "mcu_isp",
+ [IS_CLK_ISP_DIV0] = "isp_div0",
+ [IS_CLK_ISP_DIV1] = "isp_div1",
+ [IS_CLK_ISP_DIVMPWM] = "isp_divmpwm",
+ [IS_CLK_MCU_ISP_DIV0] = "mcu_isp_div0",
+ [IS_CLK_MCU_ISP_DIV1] = "mcu_isp_div1",
+};
+
+static void fimc_is_put_clocks(struct fimc_is *is)
+{
+ int i;
+
+ for (i = 0; i < IS_CLK_MAX_NUM; i++) {
+ if (IS_ERR(is->clock[i]))
+ continue;
+ clk_unprepare(is->clock[i]);
+ clk_put(is->clock[i]);
+ is->clock[i] = ERR_PTR(-EINVAL);
+ }
+}
+
+static int fimc_is_get_clocks(struct fimc_is *is)
+{
+ struct device *dev = &is->pdev->dev;
+ int i, ret;
+
+ for (i = 0; i < IS_CLK_MAX_NUM; i++) {
+ is->clock[i] = clk_get(dev, fimc_is_clock_name[i]);
+ if (IS_ERR(is->clock[i]))
+ goto err;
+ ret = clk_prepare(is->clock[i]);
+ if (ret < 0) {
+ clk_put(is->clock[i]);
+ is->clock[i] = ERR_PTR(-EINVAL);
+ goto err;
+ }
+ }
+ return 0;
+err:
+ fimc_is_put_clocks(is);
+ pr_err("Failed to get clock: %s\n", fimc_is_clock_name[i]);
+ return -ENXIO;
+}
+
+static int fimc_is_configure_clocks(struct fimc_is *is)
+{
+ int i, ret;
+
+ for (i = 0; i < IS_CLK_MAX_NUM; i++)
+ is->clock[i] = ERR_PTR(-EINVAL);
+
+ ret = fimc_is_get_clocks(is);
+ if (ret)
+ return ret;
+
+ /* Set rates */
+ ret = clk_set_rate(is->clock[IS_CLK_MCU_ISP_DIV0],
+ CLK_MCU_ISP_DIV0_FREQ);
+ if (ret)
+ return ret;
+ ret = clk_set_rate(is->clock[IS_CLK_MCU_ISP_DIV1],
+ CLK_MCU_ISP_DIV1_FREQ);
+ if (ret)
+ return ret;
+ ret = clk_set_rate(is->clock[IS_CLK_ISP_DIV0], CLK_ISP_DIV0_FREQ);
+ if (ret)
+ return ret;
+ ret = clk_set_rate(is->clock[IS_CLK_ISP_DIV1], CLK_ISP_DIV1_FREQ);
+ if (ret)
+ return ret;
+ ret = clk_set_rate(is->clock[IS_CLK_ISP_DIVMPWM],
+ CLK_ISP_DIVMPWM_FREQ);
+ return ret;
+}
+
+static void fimc_is_pipelines_destroy(struct fimc_is *is)
+{
+ int i;
+
+ for (i = 0; i < is->drvdata->num_instances; i++)
+ fimc_is_pipeline_destroy(&is->pipeline[i]);
+}
+
+static int fimc_is_parse_sensor_config(struct fimc_is *is, unsigned int index,
+ struct device_node *node)
+{
+ struct fimc_is_sensor *sensor = &is->sensor[index];
+ u32 tmp = 0;
+ int ret;
+
+ sensor->drvdata = exynos5_is_sensor_get_drvdata(node);
+ if (!sensor->drvdata) {
+ dev_err(&is->pdev->dev, "no driver data found for: %s\n",
+ node->full_name);
+ return -EINVAL;
+ }
+
+ node = v4l2_of_get_next_endpoint(node, NULL);
+ if (!node)
+ return -ENXIO;
+
+ node = v4l2_of_get_remote_port(node);
+ if (!node)
+ return -ENXIO;
+
+ /* Use MIPI-CSIS channel id to determine the ISP I2C bus index. */
+ ret = of_property_read_u32(node, "reg", &tmp);
+ if (ret < 0) {
+ dev_err(&is->pdev->dev, "reg property not found at: %s\n",
+ node->full_name);
+ return ret;
+ }
+
+ sensor->i2c_bus = tmp - FIMC_INPUT_MIPI_CSI2_0;
+ return 0;
+}
+
+static int fimc_is_parse_sensor(struct fimc_is *is)
+{
+ struct device_node *i2c_bus, *child;
+ int ret, index = 0;
+
+ for_each_compatible_node(i2c_bus, NULL, FIMC_IS_I2C_COMPATIBLE) {
+ for_each_available_child_of_node(i2c_bus, child) {
+ ret = fimc_is_parse_sensor_config(is, index, child);
+
+ if (ret < 0 || index >= FIMC_IS_NUM_SENSORS) {
+ of_node_put(child);
+ return ret;
+ }
+ index++;
+ }
+ }
+ return 0;
+}
+
+static void *fimc_is_get_drvdata(struct platform_device *pdev);
+
+static int fimc_is_probe(struct platform_device *pdev)
+{
+ struct device *dev = &pdev->dev;
+ struct resource *res;
+ struct fimc_is *is;
+ void __iomem *regs;
+ struct device_node *node;
+ int irq, ret;
+ int i;
+
+ dev_dbg(dev, "FIMC-IS Probe Enter\n");
+
+ if (!dev->of_node)
+ return -ENODEV;
+
+ is = devm_kzalloc(&pdev->dev, sizeof(*is), GFP_KERNEL);
+ if (!is)
+ return -ENOMEM;
+
+ is->pdev = pdev;
+
+ is->drvdata = fimc_is_get_drvdata(pdev);
+
+ res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
+ regs = devm_ioremap_resource(dev, res);
+ if (IS_ERR(regs))
+ return PTR_ERR(regs);
+
+ /* Get the PMU base */
+ node = of_parse_phandle(dev->of_node, "samsung,pmu", 0);
+ if (!node)
+ return -ENODEV;
+ is->pmu_regs = of_iomap(node, 0);
+ if (!is->pmu_regs)
+ return -ENOMEM;
+
+ irq = irq_of_parse_and_map(dev->of_node, 0);
+ if (irq < 0) {
+ dev_err(dev, "Failed to get IRQ\n");
+ return irq;
+ }
+
+ ret = fimc_is_configure_clocks(is);
+ if (ret < 0) {
+ dev_err(dev, "clocks configuration failed\n");
+ goto err_clk;
+ }
+
+ platform_set_drvdata(pdev, is);
+ pm_runtime_enable(dev);
+
+ is->alloc_ctx = vb2_dma_contig_init_ctx(dev);
+ if (IS_ERR(is->alloc_ctx)) {
+ ret = PTR_ERR(is->alloc_ctx);
+ goto err_vb;
+ }
+
+ /* Get IS-sensor contexts */
+ ret = fimc_is_parse_sensor(is);
+ if (ret < 0)
+ goto err_vb;
+
+ /* Initialize FIMC Pipeline */
+ for (i = 0; i < is->drvdata->num_instances; i++) {
+ ret = fimc_is_pipeline_init(&is->pipeline[i], i, is);
+ if (ret < 0)
+ goto err_sd;
+ }
+
+ /* Initialize FIMC Interface */
+ ret = fimc_is_interface_init(&is->interface, regs, irq);
+ if (ret < 0)
+ goto err_sd;
+
+ /* Probe the peripheral devices */
+ ret = of_platform_populate(dev->of_node, NULL, NULL, dev);
+ if (ret < 0)
+ goto err_sd;
+
+ dev_dbg(dev, "FIMC-IS registered successfully\n");
+
+ return 0;
+
+err_sd:
+ fimc_is_pipelines_destroy(is);
+err_vb:
+ vb2_dma_contig_cleanup_ctx(is->alloc_ctx);
+err_clk:
+ fimc_is_put_clocks(is);
+
+ return ret;
+}
+
+int fimc_is_clk_enable(struct fimc_is *is)
+{
+ int ret;
+
+ ret = clk_enable(is->clock[IS_CLK_ISP]);
+ if (ret)
+ return ret;
+ ret = clk_enable(is->clock[IS_CLK_MCU_ISP]);
+ if (ret)
+ clk_disable(is->clock[IS_CLK_ISP]);
+ return ret;
+}
+
+void fimc_is_clk_disable(struct fimc_is *is)
+{
+ clk_disable(is->clock[IS_CLK_ISP]);
+ clk_disable(is->clock[IS_CLK_MCU_ISP]);
+}
+
+static int fimc_is_pm_resume(struct device *dev)
+{
+ struct fimc_is *is = dev_get_drvdata(dev);
+ int ret;
+
+ ret = fimc_is_clk_enable(is);
+ if (ret < 0) {
+ dev_err(dev, "Could not enable clocks\n");
+ return ret;
+ }
+ return 0;
+}
+
+static int fimc_is_pm_suspend(struct device *dev)
+{
+ struct fimc_is *is = dev_get_drvdata(dev);
+
+ fimc_is_clk_disable(is);
+ return 0;
+}
+
+static int fimc_is_runtime_resume(struct device *dev)
+{
+ return fimc_is_pm_resume(dev);
+}
+
+static int fimc_is_runtime_suspend(struct device *dev)
+{
+ return fimc_is_pm_suspend(dev);
+}
+
+#ifdef CONFIG_PM_SLEEP
+static int fimc_is_resume(struct device *dev)
+{
+ /* TODO */
+ return 0;
+}
+
+static int fimc_is_suspend(struct device *dev)
+{
+ /* TODO */
+ return 0;
+}
+#endif /* CONFIG_PM_SLEEP */
+
+static int fimc_is_remove(struct platform_device *pdev)
+{
+ struct fimc_is *is = platform_get_drvdata(pdev);
+ struct device *dev = &pdev->dev;
+
+ pm_runtime_disable(dev);
+ pm_runtime_set_suspended(dev);
+ fimc_is_pipelines_destroy(is);
+ vb2_dma_contig_cleanup_ctx(is->alloc_ctx);
+ fimc_is_put_clocks(is);
+ return 0;
+}
+
+static const struct dev_pm_ops fimc_is_pm_ops = {
+ SET_SYSTEM_SLEEP_PM_OPS(fimc_is_suspend, fimc_is_resume)
+ SET_RUNTIME_PM_OPS(fimc_is_runtime_suspend, fimc_is_runtime_resume,
+ NULL)
+};
+
+static struct fimc_is_drvdata exynos5250_drvdata = {
+ .num_instances = 1,
+ .fw_name = "exynos5_fimc_is_fw.bin",
+};
+
+static const struct of_device_id exynos5_fimc_is_match[] = {
+ {
+ .compatible = "samsung,exynos5250-fimc-is",
+ .data = &exynos5250_drvdata,
+ },
+ {},
+};
+MODULE_DEVICE_TABLE(of, exynos5_fimc_is_match);
+
+static void *fimc_is_get_drvdata(struct platform_device *pdev)
+{
+ struct fimc_is_drvdata *driver_data = NULL;
+ const struct of_device_id *match;
+
+ match = of_match_node(exynos5_fimc_is_match,
+ pdev->dev.of_node);
+ if (match)
+ driver_data = (struct fimc_is_drvdata *)match->data;
+ return driver_data;
+}
+
+static struct platform_driver fimc_is_driver = {
+ .probe = fimc_is_probe,
+ .remove = fimc_is_remove,
+ .driver = {
+ .name = FIMC_IS_DRV_NAME,
+ .owner = THIS_MODULE,
+ .pm = &fimc_is_pm_ops,
+ .of_match_table = exynos5_fimc_is_match,
+ }
+};
+module_platform_driver(fimc_is_driver);
+
+MODULE_LICENSE("GPL");
+MODULE_AUTHOR("Arun Kumar K <arun.kk@xxxxxxxxxxx>");
+MODULE_DESCRIPTION("Samsung Exynos5 (FIMC-IS) Imaging Subsystem driver");
diff --git a/drivers/media/platform/exynos5-is/fimc-is-core.h b/drivers/media/platform/exynos5-is/fimc-is-core.h
new file mode 100644
index 0000000..c27b603
--- /dev/null
+++ b/drivers/media/platform/exynos5-is/fimc-is-core.h
@@ -0,0 +1,132 @@
+/*
+ * Samsung EXYNOS5 FIMC-IS (Imaging Subsystem) driver
+ *
+ * Copyright (C) 2013 Samsung Electronics Co., Ltd.
+ * Arun Kumar K <arun.kk@xxxxxxxxxxx>
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License version 2 as
+ * published by the Free Software Foundation.
+ */
+#ifndef FIMC_IS_CORE_H_
+#define FIMC_IS_CORE_H_
+
+#include <asm/barrier.h>
+#include <linux/bug.h>
+#include <linux/clk.h>
+#include <linux/device.h>
+#include <linux/errno.h>
+#include <linux/firmware.h>
+#include <linux/interrupt.h>
+#include <linux/io.h>
+#include <linux/irqreturn.h>
+#include <linux/kernel.h>
+#include <linux/list.h>
+#include <linux/module.h>
+#include <linux/platform_device.h>
+#include <linux/pm_runtime.h>
+#include <linux/sched.h>
+#include <linux/sizes.h>
+#include <linux/slab.h>
+#include <linux/spinlock.h>
+#include <linux/types.h>
+#include <linux/videodev2.h>
+
+#include <media/media-entity.h>
+#include <media/s5p_fimc.h>
+#include <media/videobuf2-core.h>
+#include <media/v4l2-ctrls.h>
+#include <media/v4l2-device.h>
+#include <media/v4l2-mem2mem.h>
+#include <media/v4l2-mediabus.h>
+
+#define FIMC_IS_DRV_NAME "exynos5-fimc-is"
+
+#define FIMC_IS_COMMAND_TIMEOUT (10 * HZ)
+#define FIMC_IS_STARTUP_TIMEOUT (3 * HZ)
+#define FIMC_IS_SHUTDOWN_TIMEOUT (10 * HZ)
+
+#define FW_SHARED_OFFSET (0x8c0000)
+#define DEBUG_CNT (500 * 1024)
+#define DEBUG_OFFSET (0x840000)
+#define DEBUGCTL_OFFSET (0x8bd000)
+#define DEBUG_FCOUNT (0x8c64c0)
+
+#define FIMC_IS_MAX_INSTANCES 1
+
+#define FIMC_IS_NUM_SENSORS 2
+#define FIMC_IS_NUM_PIPELINES 1
+
+#define FIMC_IS_MAX_PLANES 3
+#define FIMC_IS_NUM_SCALERS 2
+
+enum fimc_is_clks {
+ IS_CLK_ISP,
+ IS_CLK_MCU_ISP,
+ IS_CLK_ISP_DIV0,
+ IS_CLK_ISP_DIV1,
+ IS_CLK_ISP_DIVMPWM,
+ IS_CLK_MCU_ISP_DIV0,
+ IS_CLK_MCU_ISP_DIV1,
+ IS_CLK_MAX_NUM
+};
+
+/* Video capture states */
+enum fimc_is_video_state {
+ STATE_INIT,
+ STATE_BUFS_ALLOCATED,
+ STATE_RUNNING,
+};
+
+enum fimc_is_scaler_id {
+ SCALER_SCC,
+ SCALER_SCP
+};
+
+enum fimc_is_sensor_pos {
+ SENSOR_CAM0,
+ SENSOR_CAM1
+};
+
+struct fimc_is_buf {
+ struct vb2_buffer vb;
+ struct list_head list;
+ unsigned int paddr[FIMC_IS_MAX_PLANES];
+};
+
+struct fimc_is_memory {
+ /* physical base address */
+ dma_addr_t paddr;
+ /* virtual base address */
+ void *vaddr;
+ /* total length */
+ unsigned int size;
+};
+
+struct fimc_is_meminfo {
+ struct fimc_is_memory fw;
+ struct fimc_is_memory shot;
+ struct fimc_is_memory region;
+ struct fimc_is_memory shared;
+};
+
+struct fimc_is_drvdata {
+ unsigned int num_instances;
+ char *fw_name;
+};
+
+/**
+ * struct fimc_is_fmt - the driver's internal color format data
+ * @name: format description
+ * @fourcc: the fourcc code for this format
+ * @depth: number of bytes per pixel
+ * @num_planes: number of planes for this color format
+ */
+struct fimc_is_fmt {
+ char *name;
+ unsigned int fourcc;
+ unsigned int depth[FIMC_IS_MAX_PLANES];
+ unsigned int num_planes;
+};
+
+#endif
--
1.7.9.5
--
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