| /* |
| * Samsung EXYNOS4x12 FIMC-IS (Imaging Subsystem) driver |
| * |
| * Copyright (C) 2013 Samsung Electronics Co., Ltd. |
| * |
| * Authors: Sylwester Nawrocki <s.nawrocki@samsung.com> |
| * Younghwan Joo <yhwan.joo@samsung.com> |
| * |
| * 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. |
| */ |
| #define pr_fmt(fmt) "%s:%d " fmt, __func__, __LINE__ |
| |
| #include <linux/device.h> |
| #include <linux/debugfs.h> |
| #include <linux/delay.h> |
| #include <linux/dma-contiguous.h> |
| #include <linux/errno.h> |
| #include <linux/firmware.h> |
| #include <linux/interrupt.h> |
| #include <linux/kernel.h> |
| #include <linux/module.h> |
| #include <linux/i2c.h> |
| #include <linux/of_irq.h> |
| #include <linux/of_address.h> |
| #include <linux/of_graph.h> |
| #include <linux/of_platform.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/videobuf2-dma-contig.h> |
| |
| #include "media-dev.h" |
| #include "fimc-is.h" |
| #include "fimc-is-command.h" |
| #include "fimc-is-errno.h" |
| #include "fimc-is-i2c.h" |
| #include "fimc-is-param.h" |
| #include "fimc-is-regs.h" |
| |
| |
| static char *fimc_is_clocks[ISS_CLKS_MAX] = { |
| [ISS_CLK_PPMUISPX] = "ppmuispx", |
| [ISS_CLK_PPMUISPMX] = "ppmuispmx", |
| [ISS_CLK_LITE0] = "lite0", |
| [ISS_CLK_LITE1] = "lite1", |
| [ISS_CLK_MPLL] = "mpll", |
| [ISS_CLK_ISP] = "isp", |
| [ISS_CLK_DRC] = "drc", |
| [ISS_CLK_FD] = "fd", |
| [ISS_CLK_MCUISP] = "mcuisp", |
| [ISS_CLK_UART] = "uart", |
| [ISS_CLK_ISP_DIV0] = "ispdiv0", |
| [ISS_CLK_ISP_DIV1] = "ispdiv1", |
| [ISS_CLK_MCUISP_DIV0] = "mcuispdiv0", |
| [ISS_CLK_MCUISP_DIV1] = "mcuispdiv1", |
| [ISS_CLK_ACLK200] = "aclk200", |
| [ISS_CLK_ACLK200_DIV] = "div_aclk200", |
| [ISS_CLK_ACLK400MCUISP] = "aclk400mcuisp", |
| [ISS_CLK_ACLK400MCUISP_DIV] = "div_aclk400mcuisp", |
| }; |
| |
| static void fimc_is_put_clocks(struct fimc_is *is) |
| { |
| int i; |
| |
| for (i = 0; i < ISS_CLKS_MAX; i++) { |
| if (IS_ERR(is->clocks[i])) |
| continue; |
| clk_put(is->clocks[i]); |
| is->clocks[i] = ERR_PTR(-EINVAL); |
| } |
| } |
| |
| static int fimc_is_get_clocks(struct fimc_is *is) |
| { |
| int i, ret; |
| |
| for (i = 0; i < ISS_CLKS_MAX; i++) |
| is->clocks[i] = ERR_PTR(-EINVAL); |
| |
| for (i = 0; i < ISS_CLKS_MAX; i++) { |
| is->clocks[i] = clk_get(&is->pdev->dev, fimc_is_clocks[i]); |
| if (IS_ERR(is->clocks[i])) { |
| ret = PTR_ERR(is->clocks[i]); |
| goto err; |
| } |
| } |
| |
| return 0; |
| err: |
| fimc_is_put_clocks(is); |
| dev_err(&is->pdev->dev, "failed to get clock: %s\n", |
| fimc_is_clocks[i]); |
| return ret; |
| } |
| |
| static int fimc_is_setup_clocks(struct fimc_is *is) |
| { |
| int ret; |
| |
| ret = clk_set_parent(is->clocks[ISS_CLK_ACLK200], |
| is->clocks[ISS_CLK_ACLK200_DIV]); |
| if (ret < 0) |
| return ret; |
| |
| ret = clk_set_parent(is->clocks[ISS_CLK_ACLK400MCUISP], |
| is->clocks[ISS_CLK_ACLK400MCUISP_DIV]); |
| if (ret < 0) |
| return ret; |
| |
| ret = clk_set_rate(is->clocks[ISS_CLK_ISP_DIV0], ACLK_AXI_FREQUENCY); |
| if (ret < 0) |
| return ret; |
| |
| ret = clk_set_rate(is->clocks[ISS_CLK_ISP_DIV1], ACLK_AXI_FREQUENCY); |
| if (ret < 0) |
| return ret; |
| |
| ret = clk_set_rate(is->clocks[ISS_CLK_MCUISP_DIV0], |
| ATCLK_MCUISP_FREQUENCY); |
| if (ret < 0) |
| return ret; |
| |
| return clk_set_rate(is->clocks[ISS_CLK_MCUISP_DIV1], |
| ATCLK_MCUISP_FREQUENCY); |
| } |
| |
| static int fimc_is_enable_clocks(struct fimc_is *is) |
| { |
| int i, ret; |
| |
| for (i = 0; i < ISS_GATE_CLKS_MAX; i++) { |
| if (IS_ERR(is->clocks[i])) |
| continue; |
| ret = clk_prepare_enable(is->clocks[i]); |
| if (ret < 0) { |
| dev_err(&is->pdev->dev, "clock %s enable failed\n", |
| fimc_is_clocks[i]); |
| for (--i; i >= 0; i--) |
| clk_disable(is->clocks[i]); |
| return ret; |
| } |
| pr_debug("enabled clock: %s\n", fimc_is_clocks[i]); |
| } |
| return 0; |
| } |
| |
| static void fimc_is_disable_clocks(struct fimc_is *is) |
| { |
| int i; |
| |
| for (i = 0; i < ISS_GATE_CLKS_MAX; i++) { |
| if (!IS_ERR(is->clocks[i])) { |
| clk_disable_unprepare(is->clocks[i]); |
| pr_debug("disabled clock: %s\n", fimc_is_clocks[i]); |
| } |
| } |
| } |
| |
| static int fimc_is_parse_sensor_config(struct fimc_is_sensor *sensor, |
| struct device_node *np) |
| { |
| u32 tmp = 0; |
| int ret; |
| |
| np = of_graph_get_next_endpoint(np, NULL); |
| if (!np) |
| return -ENXIO; |
| np = of_graph_get_remote_port(np); |
| if (!np) |
| return -ENXIO; |
| |
| /* Use MIPI-CSIS channel id to determine the ISP I2C bus index. */ |
| ret = of_property_read_u32(np, "reg", &tmp); |
| sensor->i2c_bus = tmp - FIMC_INPUT_MIPI_CSI2_0; |
| |
| return ret; |
| } |
| |
| static int fimc_is_register_subdevs(struct fimc_is *is) |
| { |
| struct device_node *adapter, *child; |
| int ret; |
| |
| ret = fimc_isp_subdev_create(&is->isp); |
| if (ret < 0) |
| return ret; |
| |
| for_each_compatible_node(adapter, NULL, FIMC_IS_I2C_COMPATIBLE) { |
| if (!of_find_device_by_node(adapter)) { |
| of_node_put(adapter); |
| return -EPROBE_DEFER; |
| } |
| |
| for_each_available_child_of_node(adapter, child) { |
| struct i2c_client *client; |
| struct v4l2_subdev *sd; |
| |
| client = of_find_i2c_device_by_node(child); |
| if (!client) |
| goto e_retry; |
| |
| sd = i2c_get_clientdata(client); |
| if (!sd) |
| goto e_retry; |
| |
| /* FIXME: Add support for multiple sensors. */ |
| if (WARN_ON(is->sensor)) |
| continue; |
| |
| is->sensor = sd_to_fimc_is_sensor(sd); |
| |
| if (fimc_is_parse_sensor_config(is->sensor, child)) { |
| dev_warn(&is->pdev->dev, "DT parse error: %s\n", |
| child->full_name); |
| } |
| pr_debug("%s(): registered subdev: %p\n", |
| __func__, sd->name); |
| } |
| } |
| return 0; |
| |
| e_retry: |
| of_node_put(child); |
| return -EPROBE_DEFER; |
| } |
| |
| static int fimc_is_unregister_subdevs(struct fimc_is *is) |
| { |
| fimc_isp_subdev_destroy(&is->isp); |
| is->sensor = NULL; |
| return 0; |
| } |
| |
| static int fimc_is_load_setfile(struct fimc_is *is, char *file_name) |
| { |
| const struct firmware *fw; |
| void *buf; |
| int ret; |
| |
| ret = request_firmware(&fw, file_name, &is->pdev->dev); |
| if (ret < 0) { |
| dev_err(&is->pdev->dev, "firmware request failed (%d)\n", ret); |
| return ret; |
| } |
| buf = is->memory.vaddr + is->setfile.base; |
| memcpy(buf, fw->data, fw->size); |
| fimc_is_mem_barrier(); |
| is->setfile.size = fw->size; |
| |
| pr_debug("mem vaddr: %p, setfile buf: %p\n", is->memory.vaddr, buf); |
| |
| memcpy(is->fw.setfile_info, |
| fw->data + fw->size - FIMC_IS_SETFILE_INFO_LEN, |
| FIMC_IS_SETFILE_INFO_LEN - 1); |
| |
| is->fw.setfile_info[FIMC_IS_SETFILE_INFO_LEN - 1] = '\0'; |
| is->setfile.state = 1; |
| |
| pr_debug("FIMC-IS setfile loaded: base: %#x, size: %zu B\n", |
| is->setfile.base, fw->size); |
| |
| release_firmware(fw); |
| return ret; |
| } |
| |
| int fimc_is_cpu_set_power(struct fimc_is *is, int on) |
| { |
| unsigned int timeout = FIMC_IS_POWER_ON_TIMEOUT; |
| |
| if (on) { |
| /* Disable watchdog */ |
| mcuctl_write(0, is, REG_WDT_ISP); |
| |
| /* Cortex-A5 start address setting */ |
| mcuctl_write(is->memory.paddr, is, MCUCTL_REG_BBOAR); |
| |
| /* Enable and start Cortex-A5 */ |
| pmuisp_write(0x18000, is, REG_PMU_ISP_ARM_OPTION); |
| pmuisp_write(0x1, is, REG_PMU_ISP_ARM_CONFIGURATION); |
| } else { |
| /* A5 power off */ |
| pmuisp_write(0x10000, is, REG_PMU_ISP_ARM_OPTION); |
| pmuisp_write(0x0, is, REG_PMU_ISP_ARM_CONFIGURATION); |
| |
| while (pmuisp_read(is, REG_PMU_ISP_ARM_STATUS) & 1) { |
| if (timeout == 0) |
| return -ETIME; |
| timeout--; |
| udelay(1); |
| } |
| } |
| |
| return 0; |
| } |
| |
| /* Wait until @bit of @is->state is set to @state in the interrupt handler. */ |
| int fimc_is_wait_event(struct fimc_is *is, unsigned long bit, |
| unsigned int state, unsigned int timeout) |
| { |
| |
| int ret = wait_event_timeout(is->irq_queue, |
| !state ^ test_bit(bit, &is->state), |
| timeout); |
| if (ret == 0) { |
| dev_WARN(&is->pdev->dev, "%s() timed out\n", __func__); |
| return -ETIME; |
| } |
| return 0; |
| } |
| |
| int fimc_is_start_firmware(struct fimc_is *is) |
| { |
| struct device *dev = &is->pdev->dev; |
| int ret; |
| |
| if (is->fw.f_w == NULL) { |
| dev_err(dev, "firmware is not loaded\n"); |
| return -EINVAL; |
| } |
| |
| memcpy(is->memory.vaddr, is->fw.f_w->data, is->fw.f_w->size); |
| wmb(); |
| |
| ret = fimc_is_cpu_set_power(is, 1); |
| if (ret < 0) |
| return ret; |
| |
| ret = fimc_is_wait_event(is, IS_ST_A5_PWR_ON, 1, |
| msecs_to_jiffies(FIMC_IS_FW_LOAD_TIMEOUT)); |
| if (ret < 0) |
| dev_err(dev, "FIMC-IS CPU power on failed\n"); |
| |
| return ret; |
| } |
| |
| /* Allocate working memory for the FIMC-IS CPU. */ |
| static int fimc_is_alloc_cpu_memory(struct fimc_is *is) |
| { |
| struct device *dev = &is->pdev->dev; |
| |
| is->memory.vaddr = dma_alloc_coherent(dev, FIMC_IS_CPU_MEM_SIZE, |
| &is->memory.paddr, GFP_KERNEL); |
| if (is->memory.vaddr == NULL) |
| return -ENOMEM; |
| |
| is->memory.size = FIMC_IS_CPU_MEM_SIZE; |
| memset(is->memory.vaddr, 0, is->memory.size); |
| |
| dev_info(dev, "FIMC-IS CPU memory base: %#x\n", (u32)is->memory.paddr); |
| |
| if (((u32)is->memory.paddr) & FIMC_IS_FW_ADDR_MASK) { |
| dev_err(dev, "invalid firmware memory alignment: %#x\n", |
| (u32)is->memory.paddr); |
| dma_free_coherent(dev, is->memory.size, is->memory.vaddr, |
| is->memory.paddr); |
| return -EIO; |
| } |
| |
| is->is_p_region = (struct is_region *)(is->memory.vaddr + |
| FIMC_IS_CPU_MEM_SIZE - FIMC_IS_REGION_SIZE); |
| |
| is->is_dma_p_region = is->memory.paddr + |
| FIMC_IS_CPU_MEM_SIZE - FIMC_IS_REGION_SIZE; |
| |
| is->is_shared_region = (struct is_share_region *)(is->memory.vaddr + |
| FIMC_IS_SHARED_REGION_OFFSET); |
| return 0; |
| } |
| |
| static void fimc_is_free_cpu_memory(struct fimc_is *is) |
| { |
| struct device *dev = &is->pdev->dev; |
| |
| dma_free_coherent(dev, is->memory.size, is->memory.vaddr, |
| is->memory.paddr); |
| } |
| |
| static void fimc_is_load_firmware(const struct firmware *fw, void *context) |
| { |
| struct fimc_is *is = context; |
| struct device *dev = &is->pdev->dev; |
| void *buf; |
| int ret; |
| |
| if (fw == NULL) { |
| dev_err(dev, "firmware request failed\n"); |
| return; |
| } |
| mutex_lock(&is->lock); |
| |
| if (fw->size < FIMC_IS_FW_SIZE_MIN || fw->size > FIMC_IS_FW_SIZE_MAX) { |
| dev_err(dev, "wrong firmware size: %d\n", fw->size); |
| goto done; |
| } |
| |
| is->fw.size = fw->size; |
| |
| ret = fimc_is_alloc_cpu_memory(is); |
| if (ret < 0) { |
| dev_err(dev, "failed to allocate FIMC-IS CPU memory\n"); |
| goto done; |
| } |
| |
| memcpy(is->memory.vaddr, fw->data, fw->size); |
| wmb(); |
| |
| /* Read firmware description. */ |
| buf = (void *)(is->memory.vaddr + fw->size - FIMC_IS_FW_DESC_LEN); |
| memcpy(&is->fw.info, buf, FIMC_IS_FW_INFO_LEN); |
| is->fw.info[FIMC_IS_FW_INFO_LEN] = 0; |
| |
| buf = (void *)(is->memory.vaddr + fw->size - FIMC_IS_FW_VER_LEN); |
| memcpy(&is->fw.version, buf, FIMC_IS_FW_VER_LEN); |
| is->fw.version[FIMC_IS_FW_VER_LEN - 1] = 0; |
| |
| is->fw.state = 1; |
| |
| dev_info(dev, "loaded firmware: %s, rev. %s\n", |
| is->fw.info, is->fw.version); |
| dev_dbg(dev, "FW size: %d, paddr: %#x\n", fw->size, is->memory.paddr); |
| |
| is->is_shared_region->chip_id = 0xe4412; |
| is->is_shared_region->chip_rev_no = 1; |
| |
| fimc_is_mem_barrier(); |
| |
| /* |
| * FIXME: The firmware is not being released for now, as it is |
| * needed around for copying to the IS working memory every |
| * time before the Cortex-A5 is restarted. |
| */ |
| if (is->fw.f_w) |
| release_firmware(is->fw.f_w); |
| is->fw.f_w = fw; |
| done: |
| mutex_unlock(&is->lock); |
| } |
| |
| static int fimc_is_request_firmware(struct fimc_is *is, const char *fw_name) |
| { |
| return request_firmware_nowait(THIS_MODULE, |
| FW_ACTION_HOTPLUG, fw_name, &is->pdev->dev, |
| GFP_KERNEL, is, fimc_is_load_firmware); |
| } |
| |
| /* General IS interrupt handler */ |
| static void fimc_is_general_irq_handler(struct fimc_is *is) |
| { |
| is->i2h_cmd.cmd = mcuctl_read(is, MCUCTL_REG_ISSR(10)); |
| |
| switch (is->i2h_cmd.cmd) { |
| case IHC_GET_SENSOR_NUM: |
| fimc_is_hw_get_params(is, 1); |
| fimc_is_hw_wait_intmsr0_intmsd0(is); |
| fimc_is_hw_set_sensor_num(is); |
| pr_debug("ISP FW version: %#x\n", is->i2h_cmd.args[0]); |
| break; |
| case IHC_SET_FACE_MARK: |
| case IHC_FRAME_DONE: |
| fimc_is_hw_get_params(is, 2); |
| break; |
| case IHC_SET_SHOT_MARK: |
| case IHC_AA_DONE: |
| case IH_REPLY_DONE: |
| fimc_is_hw_get_params(is, 3); |
| break; |
| case IH_REPLY_NOT_DONE: |
| fimc_is_hw_get_params(is, 4); |
| break; |
| case IHC_NOT_READY: |
| break; |
| default: |
| pr_info("unknown command: %#x\n", is->i2h_cmd.cmd); |
| } |
| |
| fimc_is_fw_clear_irq1(is, FIMC_IS_INT_GENERAL); |
| |
| switch (is->i2h_cmd.cmd) { |
| case IHC_GET_SENSOR_NUM: |
| fimc_is_hw_set_intgr0_gd0(is); |
| set_bit(IS_ST_A5_PWR_ON, &is->state); |
| break; |
| |
| case IHC_SET_SHOT_MARK: |
| break; |
| |
| case IHC_SET_FACE_MARK: |
| is->fd_header.count = is->i2h_cmd.args[0]; |
| is->fd_header.index = is->i2h_cmd.args[1]; |
| is->fd_header.offset = 0; |
| break; |
| |
| case IHC_FRAME_DONE: |
| break; |
| |
| case IHC_AA_DONE: |
| pr_debug("AA_DONE - %d, %d, %d\n", is->i2h_cmd.args[0], |
| is->i2h_cmd.args[1], is->i2h_cmd.args[2]); |
| break; |
| |
| case IH_REPLY_DONE: |
| pr_debug("ISR_DONE: args[0]: %#x\n", is->i2h_cmd.args[0]); |
| |
| switch (is->i2h_cmd.args[0]) { |
| case HIC_PREVIEW_STILL...HIC_CAPTURE_VIDEO: |
| /* Get CAC margin */ |
| set_bit(IS_ST_CHANGE_MODE, &is->state); |
| is->isp.cac_margin_x = is->i2h_cmd.args[1]; |
| is->isp.cac_margin_y = is->i2h_cmd.args[2]; |
| pr_debug("CAC margin (x,y): (%d,%d)\n", |
| is->isp.cac_margin_x, is->isp.cac_margin_y); |
| break; |
| |
| case HIC_STREAM_ON: |
| clear_bit(IS_ST_STREAM_OFF, &is->state); |
| set_bit(IS_ST_STREAM_ON, &is->state); |
| break; |
| |
| case HIC_STREAM_OFF: |
| clear_bit(IS_ST_STREAM_ON, &is->state); |
| set_bit(IS_ST_STREAM_OFF, &is->state); |
| break; |
| |
| case HIC_SET_PARAMETER: |
| is->config[is->config_index].p_region_index[0] = 0; |
| is->config[is->config_index].p_region_index[1] = 0; |
| set_bit(IS_ST_BLOCK_CMD_CLEARED, &is->state); |
| pr_debug("HIC_SET_PARAMETER\n"); |
| break; |
| |
| case HIC_GET_PARAMETER: |
| break; |
| |
| case HIC_SET_TUNE: |
| break; |
| |
| case HIC_GET_STATUS: |
| break; |
| |
| case HIC_OPEN_SENSOR: |
| set_bit(IS_ST_OPEN_SENSOR, &is->state); |
| pr_debug("data lanes: %d, settle line: %d\n", |
| is->i2h_cmd.args[2], is->i2h_cmd.args[1]); |
| break; |
| |
| case HIC_CLOSE_SENSOR: |
| clear_bit(IS_ST_OPEN_SENSOR, &is->state); |
| is->sensor_index = 0; |
| break; |
| |
| case HIC_MSG_TEST: |
| pr_debug("config MSG level completed\n"); |
| break; |
| |
| case HIC_POWER_DOWN: |
| clear_bit(IS_ST_PWR_SUBIP_ON, &is->state); |
| break; |
| |
| case HIC_GET_SET_FILE_ADDR: |
| is->setfile.base = is->i2h_cmd.args[1]; |
| set_bit(IS_ST_SETFILE_LOADED, &is->state); |
| break; |
| |
| case HIC_LOAD_SET_FILE: |
| set_bit(IS_ST_SETFILE_LOADED, &is->state); |
| break; |
| } |
| break; |
| |
| case IH_REPLY_NOT_DONE: |
| pr_err("ISR_NDONE: %d: %#x, %s\n", is->i2h_cmd.args[0], |
| is->i2h_cmd.args[1], |
| fimc_is_strerr(is->i2h_cmd.args[1])); |
| |
| if (is->i2h_cmd.args[1] & IS_ERROR_TIME_OUT_FLAG) |
| pr_err("IS_ERROR_TIME_OUT\n"); |
| |
| switch (is->i2h_cmd.args[1]) { |
| case IS_ERROR_SET_PARAMETER: |
| fimc_is_mem_barrier(); |
| } |
| |
| switch (is->i2h_cmd.args[0]) { |
| case HIC_SET_PARAMETER: |
| is->config[is->config_index].p_region_index[0] = 0; |
| is->config[is->config_index].p_region_index[1] = 0; |
| set_bit(IS_ST_BLOCK_CMD_CLEARED, &is->state); |
| break; |
| } |
| break; |
| |
| case IHC_NOT_READY: |
| pr_err("IS control sequence error: Not Ready\n"); |
| break; |
| } |
| |
| wake_up(&is->irq_queue); |
| } |
| |
| static irqreturn_t fimc_is_irq_handler(int irq, void *priv) |
| { |
| struct fimc_is *is = priv; |
| unsigned long flags; |
| u32 status; |
| |
| spin_lock_irqsave(&is->slock, flags); |
| status = mcuctl_read(is, MCUCTL_REG_INTSR1); |
| |
| if (status & (1UL << FIMC_IS_INT_GENERAL)) |
| fimc_is_general_irq_handler(is); |
| |
| if (status & (1UL << FIMC_IS_INT_FRAME_DONE_ISP)) |
| fimc_isp_irq_handler(is); |
| |
| spin_unlock_irqrestore(&is->slock, flags); |
| return IRQ_HANDLED; |
| } |
| |
| static int fimc_is_hw_open_sensor(struct fimc_is *is, |
| struct fimc_is_sensor *sensor) |
| { |
| struct sensor_open_extended *soe = (void *)&is->is_p_region->shared; |
| |
| fimc_is_hw_wait_intmsr0_intmsd0(is); |
| |
| soe->self_calibration_mode = 1; |
| soe->actuator_type = 0; |
| soe->mipi_lane_num = 0; |
| soe->mclk = 0; |
| soe->mipi_speed = 0; |
| soe->fast_open_sensor = 0; |
| soe->i2c_sclk = 88000000; |
| |
| fimc_is_mem_barrier(); |
| |
| mcuctl_write(HIC_OPEN_SENSOR, is, MCUCTL_REG_ISSR(0)); |
| mcuctl_write(is->sensor_index, is, MCUCTL_REG_ISSR(1)); |
| mcuctl_write(sensor->drvdata->id, is, MCUCTL_REG_ISSR(2)); |
| mcuctl_write(sensor->i2c_bus, is, MCUCTL_REG_ISSR(3)); |
| mcuctl_write(is->is_dma_p_region, is, MCUCTL_REG_ISSR(4)); |
| |
| fimc_is_hw_set_intgr0_gd0(is); |
| |
| return fimc_is_wait_event(is, IS_ST_OPEN_SENSOR, 1, |
| FIMC_IS_SENSOR_OPEN_TIMEOUT); |
| } |
| |
| |
| int fimc_is_hw_initialize(struct fimc_is *is) |
| { |
| const int config_ids[] = { |
| IS_SC_PREVIEW_STILL, IS_SC_PREVIEW_VIDEO, |
| IS_SC_CAPTURE_STILL, IS_SC_CAPTURE_VIDEO |
| }; |
| struct device *dev = &is->pdev->dev; |
| u32 prev_id; |
| int i, ret; |
| |
| /* Sensor initialization. */ |
| ret = fimc_is_hw_open_sensor(is, is->sensor); |
| if (ret < 0) |
| return ret; |
| |
| /* Get the setfile address. */ |
| fimc_is_hw_get_setfile_addr(is); |
| |
| ret = fimc_is_wait_event(is, IS_ST_SETFILE_LOADED, 1, |
| FIMC_IS_CONFIG_TIMEOUT); |
| if (ret < 0) { |
| dev_err(dev, "get setfile address timed out\n"); |
| return ret; |
| } |
| pr_debug("setfile.base: %#x\n", is->setfile.base); |
| |
| /* Load the setfile. */ |
| fimc_is_load_setfile(is, FIMC_IS_SETFILE_6A3); |
| clear_bit(IS_ST_SETFILE_LOADED, &is->state); |
| fimc_is_hw_load_setfile(is); |
| ret = fimc_is_wait_event(is, IS_ST_SETFILE_LOADED, 1, |
| FIMC_IS_CONFIG_TIMEOUT); |
| if (ret < 0) { |
| dev_err(dev, "loading setfile timed out\n"); |
| return ret; |
| } |
| |
| pr_debug("setfile: base: %#x, size: %d\n", |
| is->setfile.base, is->setfile.size); |
| pr_info("FIMC-IS Setfile info: %s\n", is->fw.setfile_info); |
| |
| /* Check magic number. */ |
| if (is->is_p_region->shared[MAX_SHARED_COUNT - 1] != |
| FIMC_IS_MAGIC_NUMBER) { |
| dev_err(dev, "magic number error!\n"); |
| return -EIO; |
| } |
| |
| pr_debug("shared region: %#x, parameter region: %#x\n", |
| is->memory.paddr + FIMC_IS_SHARED_REGION_OFFSET, |
| is->is_dma_p_region); |
| |
| is->setfile.sub_index = 0; |
| |
| /* Stream off. */ |
| fimc_is_hw_stream_off(is); |
| ret = fimc_is_wait_event(is, IS_ST_STREAM_OFF, 1, |
| FIMC_IS_CONFIG_TIMEOUT); |
| if (ret < 0) { |
| dev_err(dev, "stream off timeout\n"); |
| return ret; |
| } |
| |
| /* Preserve previous mode. */ |
| prev_id = is->config_index; |
| |
| /* Set initial parameter values. */ |
| for (i = 0; i < ARRAY_SIZE(config_ids); i++) { |
| is->config_index = config_ids[i]; |
| fimc_is_set_initial_params(is); |
| ret = fimc_is_itf_s_param(is, true); |
| if (ret < 0) { |
| is->config_index = prev_id; |
| return ret; |
| } |
| } |
| is->config_index = prev_id; |
| |
| set_bit(IS_ST_INIT_DONE, &is->state); |
| dev_info(dev, "initialization sequence completed (%d)\n", |
| is->config_index); |
| return 0; |
| } |
| |
| static int fimc_is_log_show(struct seq_file *s, void *data) |
| { |
| struct fimc_is *is = s->private; |
| const u8 *buf = is->memory.vaddr + FIMC_IS_DEBUG_REGION_OFFSET; |
| |
| if (is->memory.vaddr == NULL) { |
| dev_err(&is->pdev->dev, "firmware memory is not initialized\n"); |
| return -EIO; |
| } |
| |
| seq_printf(s, "%s\n", buf); |
| return 0; |
| } |
| |
| static int fimc_is_debugfs_open(struct inode *inode, struct file *file) |
| { |
| return single_open(file, fimc_is_log_show, inode->i_private); |
| } |
| |
| static const struct file_operations fimc_is_debugfs_fops = { |
| .open = fimc_is_debugfs_open, |
| .read = seq_read, |
| .llseek = seq_lseek, |
| .release = single_release, |
| }; |
| |
| static void fimc_is_debugfs_remove(struct fimc_is *is) |
| { |
| debugfs_remove_recursive(is->debugfs_entry); |
| is->debugfs_entry = NULL; |
| } |
| |
| static int fimc_is_debugfs_create(struct fimc_is *is) |
| { |
| struct dentry *dentry; |
| |
| is->debugfs_entry = debugfs_create_dir("fimc_is", NULL); |
| |
| dentry = debugfs_create_file("fw_log", S_IRUGO, is->debugfs_entry, |
| is, &fimc_is_debugfs_fops); |
| if (!dentry) |
| fimc_is_debugfs_remove(is); |
| |
| return is->debugfs_entry == NULL ? -EIO : 0; |
| } |
| |
| static int fimc_is_runtime_resume(struct device *dev); |
| static int fimc_is_runtime_suspend(struct device *dev); |
| |
| static int fimc_is_probe(struct platform_device *pdev) |
| { |
| struct device *dev = &pdev->dev; |
| struct fimc_is *is; |
| struct resource res; |
| struct device_node *node; |
| int ret; |
| |
| is = devm_kzalloc(&pdev->dev, sizeof(*is), GFP_KERNEL); |
| if (!is) |
| return -ENOMEM; |
| |
| is->pdev = pdev; |
| is->isp.pdev = pdev; |
| |
| init_waitqueue_head(&is->irq_queue); |
| spin_lock_init(&is->slock); |
| mutex_init(&is->lock); |
| |
| ret = of_address_to_resource(dev->of_node, 0, &res); |
| if (ret < 0) |
| return ret; |
| |
| is->regs = devm_ioremap_resource(dev, &res); |
| if (IS_ERR(is->regs)) |
| return PTR_ERR(is->regs); |
| |
| node = of_get_child_by_name(dev->of_node, "pmu"); |
| if (!node) |
| return -ENODEV; |
| |
| is->pmu_regs = of_iomap(node, 0); |
| if (!is->pmu_regs) |
| return -ENOMEM; |
| |
| is->irq = irq_of_parse_and_map(dev->of_node, 0); |
| if (is->irq < 0) { |
| dev_err(dev, "no irq found\n"); |
| return is->irq; |
| } |
| |
| ret = fimc_is_get_clocks(is); |
| if (ret < 0) |
| return ret; |
| |
| platform_set_drvdata(pdev, is); |
| |
| ret = request_irq(is->irq, fimc_is_irq_handler, 0, dev_name(dev), is); |
| if (ret < 0) { |
| dev_err(dev, "irq request failed\n"); |
| goto err_clk; |
| } |
| pm_runtime_enable(dev); |
| |
| if (!pm_runtime_enabled(dev)) { |
| ret = fimc_is_runtime_resume(dev); |
| if (ret < 0) |
| goto err_irq; |
| } |
| |
| ret = pm_runtime_get_sync(dev); |
| if (ret < 0) |
| goto err_pm; |
| |
| is->alloc_ctx = vb2_dma_contig_init_ctx(dev); |
| if (IS_ERR(is->alloc_ctx)) { |
| ret = PTR_ERR(is->alloc_ctx); |
| goto err_pm; |
| } |
| /* |
| * Register FIMC-IS V4L2 subdevs to this driver. The video nodes |
| * will be created within the subdev's registered() callback. |
| */ |
| ret = fimc_is_register_subdevs(is); |
| if (ret < 0) |
| goto err_vb; |
| |
| ret = fimc_is_debugfs_create(is); |
| if (ret < 0) |
| goto err_sd; |
| |
| ret = fimc_is_request_firmware(is, FIMC_IS_FW_FILENAME); |
| if (ret < 0) |
| goto err_dfs; |
| |
| pm_runtime_put_sync(dev); |
| |
| dev_dbg(dev, "FIMC-IS registered successfully\n"); |
| return 0; |
| |
| err_dfs: |
| fimc_is_debugfs_remove(is); |
| err_sd: |
| fimc_is_unregister_subdevs(is); |
| err_vb: |
| vb2_dma_contig_cleanup_ctx(is->alloc_ctx); |
| err_pm: |
| if (!pm_runtime_enabled(dev)) |
| fimc_is_runtime_suspend(dev); |
| err_irq: |
| free_irq(is->irq, is); |
| err_clk: |
| fimc_is_put_clocks(is); |
| return ret; |
| } |
| |
| static int fimc_is_runtime_resume(struct device *dev) |
| { |
| struct fimc_is *is = dev_get_drvdata(dev); |
| int ret; |
| |
| ret = fimc_is_setup_clocks(is); |
| if (ret) |
| return ret; |
| |
| return fimc_is_enable_clocks(is); |
| } |
| |
| static int fimc_is_runtime_suspend(struct device *dev) |
| { |
| struct fimc_is *is = dev_get_drvdata(dev); |
| |
| fimc_is_disable_clocks(is); |
| return 0; |
| } |
| |
| #ifdef CONFIG_PM_SLEEP |
| static int fimc_is_resume(struct device *dev) |
| { |
| /* TODO: */ |
| return 0; |
| } |
| |
| static int fimc_is_suspend(struct device *dev) |
| { |
| struct fimc_is *is = dev_get_drvdata(dev); |
| |
| /* TODO: */ |
| if (test_bit(IS_ST_A5_PWR_ON, &is->state)) |
| return -EBUSY; |
| |
| return 0; |
| } |
| #endif /* CONFIG_PM_SLEEP */ |
| |
| static int fimc_is_remove(struct platform_device *pdev) |
| { |
| struct device *dev = &pdev->dev; |
| struct fimc_is *is = dev_get_drvdata(dev); |
| |
| pm_runtime_disable(dev); |
| pm_runtime_set_suspended(dev); |
| if (!pm_runtime_status_suspended(dev)) |
| fimc_is_runtime_suspend(dev); |
| free_irq(is->irq, is); |
| fimc_is_unregister_subdevs(is); |
| vb2_dma_contig_cleanup_ctx(is->alloc_ctx); |
| fimc_is_put_clocks(is); |
| fimc_is_debugfs_remove(is); |
| if (is->fw.f_w) |
| release_firmware(is->fw.f_w); |
| fimc_is_free_cpu_memory(is); |
| |
| return 0; |
| } |
| |
| static const struct of_device_id fimc_is_of_match[] = { |
| { .compatible = "samsung,exynos4212-fimc-is" }, |
| { /* sentinel */ }, |
| }; |
| MODULE_DEVICE_TABLE(of, fimc_is_of_match); |
| |
| 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 platform_driver fimc_is_driver = { |
| .probe = fimc_is_probe, |
| .remove = fimc_is_remove, |
| .driver = { |
| .of_match_table = fimc_is_of_match, |
| .name = FIMC_IS_DRV_NAME, |
| .owner = THIS_MODULE, |
| .pm = &fimc_is_pm_ops, |
| } |
| }; |
| |
| static int fimc_is_module_init(void) |
| { |
| int ret; |
| |
| ret = fimc_is_register_sensor_driver(); |
| if (ret < 0) |
| return ret; |
| |
| ret = fimc_is_register_i2c_driver(); |
| if (ret < 0) |
| goto err_sens; |
| |
| ret = platform_driver_register(&fimc_is_driver); |
| if (!ret) |
| return ret; |
| |
| fimc_is_unregister_i2c_driver(); |
| err_sens: |
| fimc_is_unregister_sensor_driver(); |
| return ret; |
| } |
| |
| static void fimc_is_module_exit(void) |
| { |
| fimc_is_unregister_sensor_driver(); |
| fimc_is_unregister_i2c_driver(); |
| platform_driver_unregister(&fimc_is_driver); |
| } |
| |
| module_init(fimc_is_module_init); |
| module_exit(fimc_is_module_exit); |
| |
| MODULE_ALIAS("platform:" FIMC_IS_DRV_NAME); |
| MODULE_AUTHOR("Younghwan Joo <yhwan.joo@samsung.com>"); |
| MODULE_AUTHOR("Sylwester Nawrocki <s.nawrocki@samsung.com>"); |
| MODULE_LICENSE("GPL v2"); |