diff options
Diffstat (limited to 'drivers/media/platform/qcom/camss/camss-vfe-170.c')
| -rw-r--r-- | drivers/media/platform/qcom/camss/camss-vfe-170.c | 774 |
1 files changed, 774 insertions, 0 deletions
diff --git a/drivers/media/platform/qcom/camss/camss-vfe-170.c b/drivers/media/platform/qcom/camss/camss-vfe-170.c new file mode 100644 index 000000000..f9492b1d1 --- /dev/null +++ b/drivers/media/platform/qcom/camss/camss-vfe-170.c @@ -0,0 +1,774 @@ +// SPDX-License-Identifier: GPL-2.0 +/* + * camss-vfe-170.c + * + * Qualcomm MSM Camera Subsystem - VFE (Video Front End) Module v170 + * + * Copyright (C) 2020-2021 Linaro Ltd. + */ + +#include <linux/interrupt.h> +#include <linux/io.h> +#include <linux/iopoll.h> + +#include "camss.h" +#include "camss-vfe.h" + +#define VFE_HW_VERSION (0x000) + +#define VFE_GLOBAL_RESET_CMD (0x018) +#define GLOBAL_RESET_CMD_CORE BIT(0) +#define GLOBAL_RESET_CMD_CAMIF BIT(1) +#define GLOBAL_RESET_CMD_BUS BIT(2) +#define GLOBAL_RESET_CMD_BUS_BDG BIT(3) +#define GLOBAL_RESET_CMD_REGISTER BIT(4) +#define GLOBAL_RESET_CMD_PM BIT(5) +#define GLOBAL_RESET_CMD_BUS_MISR BIT(6) +#define GLOBAL_RESET_CMD_TESTGEN BIT(7) +#define GLOBAL_RESET_CMD_DSP BIT(8) +#define GLOBAL_RESET_CMD_IDLE_CGC BIT(9) +#define GLOBAL_RESET_CMD_RDI0 BIT(10) +#define GLOBAL_RESET_CMD_RDI1 BIT(11) +#define GLOBAL_RESET_CMD_RDI2 BIT(12) +#define GLOBAL_RESET_CMD_RDI3 BIT(13) +#define GLOBAL_RESET_CMD_VFE_DOMAIN BIT(30) +#define GLOBAL_RESET_CMD_RESET_BYPASS BIT(31) + +#define VFE_CORE_CFG (0x050) +#define CFG_PIXEL_PATTERN_YCBYCR (0x4) +#define CFG_PIXEL_PATTERN_YCRYCB (0x5) +#define CFG_PIXEL_PATTERN_CBYCRY (0x6) +#define CFG_PIXEL_PATTERN_CRYCBY (0x7) +#define CFG_COMPOSITE_REG_UPDATE_EN BIT(4) + +#define VFE_IRQ_CMD (0x058) +#define CMD_GLOBAL_CLEAR BIT(0) + +#define VFE_IRQ_MASK_0 (0x05c) +#define MASK_0_CAMIF_SOF BIT(0) +#define MASK_0_CAMIF_EOF BIT(1) +#define MASK_0_RDI_REG_UPDATE(n) BIT((n) + 5) +#define MASK_0_IMAGE_MASTER_n_PING_PONG(n) BIT((n) + 8) +#define MASK_0_IMAGE_COMPOSITE_DONE_n(n) BIT((n) + 25) +#define MASK_0_RESET_ACK BIT(31) + +#define VFE_IRQ_MASK_1 (0x060) +#define MASK_1_CAMIF_ERROR BIT(0) +#define MASK_1_VIOLATION BIT(7) +#define MASK_1_BUS_BDG_HALT_ACK BIT(8) +#define MASK_1_IMAGE_MASTER_n_BUS_OVERFLOW(n) BIT((n) + 9) +#define MASK_1_RDI_SOF(n) BIT((n) + 29) + +#define VFE_IRQ_CLEAR_0 (0x064) +#define VFE_IRQ_CLEAR_1 (0x068) + +#define VFE_IRQ_STATUS_0 (0x06c) +#define STATUS_0_CAMIF_SOF BIT(0) +#define STATUS_0_RDI_REG_UPDATE(n) BIT((n) + 5) +#define STATUS_0_IMAGE_MASTER_PING_PONG(n) BIT((n) + 8) +#define STATUS_0_IMAGE_COMPOSITE_DONE(n) BIT((n) + 25) +#define STATUS_0_RESET_ACK BIT(31) + +#define VFE_IRQ_STATUS_1 (0x070) +#define STATUS_1_VIOLATION BIT(7) +#define STATUS_1_BUS_BDG_HALT_ACK BIT(8) +#define STATUS_1_RDI_SOF(n) BIT((n) + 27) + +#define VFE_VIOLATION_STATUS (0x07c) + +#define VFE_CAMIF_CMD (0x478) +#define CMD_CLEAR_CAMIF_STATUS BIT(2) + +#define VFE_CAMIF_CFG (0x47c) +#define CFG_VSYNC_SYNC_EDGE (0) +#define VSYNC_ACTIVE_HIGH (0) +#define VSYNC_ACTIVE_LOW (1) +#define CFG_HSYNC_SYNC_EDGE (1) +#define HSYNC_ACTIVE_HIGH (0) +#define HSYNC_ACTIVE_LOW (1) +#define CFG_VFE_SUBSAMPLE_ENABLE BIT(4) +#define CFG_BUS_SUBSAMPLE_ENABLE BIT(5) +#define CFG_VFE_OUTPUT_EN BIT(6) +#define CFG_BUS_OUTPUT_EN BIT(7) +#define CFG_BINNING_EN BIT(9) +#define CFG_FRAME_BASED_EN BIT(10) +#define CFG_RAW_CROP_EN BIT(22) + +#define VFE_REG_UPDATE_CMD (0x4ac) +#define REG_UPDATE_RDI(n) BIT(1 + (n)) + +#define VFE_BUS_IRQ_MASK(n) (0x2044 + (n) * 4) +#define VFE_BUS_IRQ_CLEAR(n) (0x2050 + (n) * 4) +#define VFE_BUS_IRQ_STATUS(n) (0x205c + (n) * 4) +#define STATUS0_COMP_RESET_DONE BIT(0) +#define STATUS0_COMP_REG_UPDATE0_DONE BIT(1) +#define STATUS0_COMP_REG_UPDATE1_DONE BIT(2) +#define STATUS0_COMP_REG_UPDATE2_DONE BIT(3) +#define STATUS0_COMP_REG_UPDATE3_DONE BIT(4) +#define STATUS0_COMP_REG_UPDATE_DONE(n) BIT((n) + 1) +#define STATUS0_COMP0_BUF_DONE BIT(5) +#define STATUS0_COMP1_BUF_DONE BIT(6) +#define STATUS0_COMP2_BUF_DONE BIT(7) +#define STATUS0_COMP3_BUF_DONE BIT(8) +#define STATUS0_COMP4_BUF_DONE BIT(9) +#define STATUS0_COMP5_BUF_DONE BIT(10) +#define STATUS0_COMP_BUF_DONE(n) BIT((n) + 5) +#define STATUS0_COMP_ERROR BIT(11) +#define STATUS0_COMP_OVERWRITE BIT(12) +#define STATUS0_OVERFLOW BIT(13) +#define STATUS0_VIOLATION BIT(14) +/* WM_CLIENT_BUF_DONE defined for buffers 0:19 */ +#define STATUS1_WM_CLIENT_BUF_DONE(n) BIT(n) +#define STATUS1_EARLY_DONE BIT(24) +#define STATUS2_DUAL_COMP0_BUF_DONE BIT(0) +#define STATUS2_DUAL_COMP1_BUF_DONE BIT(1) +#define STATUS2_DUAL_COMP2_BUF_DONE BIT(2) +#define STATUS2_DUAL_COMP3_BUF_DONE BIT(3) +#define STATUS2_DUAL_COMP4_BUF_DONE BIT(4) +#define STATUS2_DUAL_COMP5_BUF_DONE BIT(5) +#define STATUS2_DUAL_COMP_BUF_DONE(n) BIT(n) +#define STATUS2_DUAL_COMP_ERROR BIT(6) +#define STATUS2_DUAL_COMP_OVERWRITE BIT(7) + +#define VFE_BUS_IRQ_CLEAR_GLOBAL (0x2068) + +#define VFE_BUS_WM_DEBUG_STATUS_CFG (0x226c) +#define DEBUG_STATUS_CFG_STATUS0(n) BIT(n) +#define DEBUG_STATUS_CFG_STATUS1(n) BIT(8 + (n)) + +#define VFE_BUS_WM_ADDR_SYNC_FRAME_HEADER (0x2080) + +#define VFE_BUS_WM_ADDR_SYNC_NO_SYNC (0x2084) +#define BUS_VER2_MAX_CLIENTS (24) +#define WM_ADDR_NO_SYNC_DEFAULT_VAL \ + ((1 << BUS_VER2_MAX_CLIENTS) - 1) + +#define VFE_BUS_WM_CGC_OVERRIDE (0x200c) +#define WM_CGC_OVERRIDE_ALL (0xFFFFF) + +#define VFE_BUS_WM_TEST_BUS_CTRL (0x211c) + +#define VFE_BUS_WM_STATUS0(n) (0x2200 + (n) * 0x100) +#define VFE_BUS_WM_STATUS1(n) (0x2204 + (n) * 0x100) +#define VFE_BUS_WM_CFG(n) (0x2208 + (n) * 0x100) +#define WM_CFG_EN (0) +#define WM_CFG_MODE (1) +#define MODE_QCOM_PLAIN (0) +#define MODE_MIPI_RAW (1) +#define WM_CFG_VIRTUALFRAME (2) +#define VFE_BUS_WM_HEADER_ADDR(n) (0x220c + (n) * 0x100) +#define VFE_BUS_WM_HEADER_CFG(n) (0x2210 + (n) * 0x100) +#define VFE_BUS_WM_IMAGE_ADDR(n) (0x2214 + (n) * 0x100) +#define VFE_BUS_WM_IMAGE_ADDR_OFFSET(n) (0x2218 + (n) * 0x100) +#define VFE_BUS_WM_BUFFER_WIDTH_CFG(n) (0x221c + (n) * 0x100) +#define WM_BUFFER_DEFAULT_WIDTH (0xFF01) + +#define VFE_BUS_WM_BUFFER_HEIGHT_CFG(n) (0x2220 + (n) * 0x100) +#define VFE_BUS_WM_PACKER_CFG(n) (0x2224 + (n) * 0x100) + +#define VFE_BUS_WM_STRIDE(n) (0x2228 + (n) * 0x100) +#define WM_STRIDE_DEFAULT_STRIDE (0xFF01) + +#define VFE_BUS_WM_IRQ_SUBSAMPLE_PERIOD(n) (0x2248 + (n) * 0x100) +#define VFE_BUS_WM_IRQ_SUBSAMPLE_PATTERN(n) (0x224c + (n) * 0x100) +#define VFE_BUS_WM_FRAMEDROP_PERIOD(n) (0x2250 + (n) * 0x100) +#define VFE_BUS_WM_FRAMEDROP_PATTERN(n) (0x2254 + (n) * 0x100) +#define VFE_BUS_WM_FRAME_INC(n) (0x2258 + (n) * 0x100) +#define VFE_BUS_WM_BURST_LIMIT(n) (0x225c + (n) * 0x100) + +static u32 vfe_hw_version(struct vfe_device *vfe) +{ + u32 hw_version = readl_relaxed(vfe->base + VFE_HW_VERSION); + + u32 gen = (hw_version >> 28) & 0xF; + u32 rev = (hw_version >> 16) & 0xFFF; + u32 step = hw_version & 0xFFFF; + + dev_dbg(vfe->camss->dev, "VFE HW Version = %u.%u.%u\n", + gen, rev, step); + + return hw_version; +} + +static inline void vfe_reg_set(struct vfe_device *vfe, u32 reg, u32 set_bits) +{ + u32 bits = readl_relaxed(vfe->base + reg); + + writel_relaxed(bits | set_bits, vfe->base + reg); +} + +static void vfe_global_reset(struct vfe_device *vfe) +{ + u32 reset_bits = GLOBAL_RESET_CMD_CORE | + GLOBAL_RESET_CMD_CAMIF | + GLOBAL_RESET_CMD_BUS | + GLOBAL_RESET_CMD_BUS_BDG | + GLOBAL_RESET_CMD_REGISTER | + GLOBAL_RESET_CMD_TESTGEN | + GLOBAL_RESET_CMD_DSP | + GLOBAL_RESET_CMD_IDLE_CGC | + GLOBAL_RESET_CMD_RDI0 | + GLOBAL_RESET_CMD_RDI1 | + GLOBAL_RESET_CMD_RDI2; + + writel_relaxed(BIT(31), vfe->base + VFE_IRQ_MASK_0); + + /* Make sure IRQ mask has been written before resetting */ + wmb(); + + writel_relaxed(reset_bits, vfe->base + VFE_GLOBAL_RESET_CMD); +} + +static void vfe_wm_start(struct vfe_device *vfe, u8 wm, struct vfe_line *line) +{ + u32 val; + + /*Set Debug Registers*/ + val = DEBUG_STATUS_CFG_STATUS0(1) | + DEBUG_STATUS_CFG_STATUS0(7); + writel_relaxed(val, vfe->base + VFE_BUS_WM_DEBUG_STATUS_CFG); + + /* BUS_WM_INPUT_IF_ADDR_SYNC_FRAME_HEADER */ + writel_relaxed(0, vfe->base + VFE_BUS_WM_ADDR_SYNC_FRAME_HEADER); + + /* no clock gating at bus input */ + val = WM_CGC_OVERRIDE_ALL; + writel_relaxed(val, vfe->base + VFE_BUS_WM_CGC_OVERRIDE); + + writel_relaxed(0x0, vfe->base + VFE_BUS_WM_TEST_BUS_CTRL); + + /* if addr_no_sync has default value then config the addr no sync reg */ + val = WM_ADDR_NO_SYNC_DEFAULT_VAL; + writel_relaxed(val, vfe->base + VFE_BUS_WM_ADDR_SYNC_NO_SYNC); + + writel_relaxed(0xf, vfe->base + VFE_BUS_WM_BURST_LIMIT(wm)); + + val = WM_BUFFER_DEFAULT_WIDTH; + writel_relaxed(val, vfe->base + VFE_BUS_WM_BUFFER_WIDTH_CFG(wm)); + + val = 0; + writel_relaxed(val, vfe->base + VFE_BUS_WM_BUFFER_HEIGHT_CFG(wm)); + + val = 0; + writel_relaxed(val, vfe->base + VFE_BUS_WM_PACKER_CFG(wm)); // XXX 1 for PLAIN8? + + /* Configure stride for RDIs */ + val = WM_STRIDE_DEFAULT_STRIDE; + writel_relaxed(val, vfe->base + VFE_BUS_WM_STRIDE(wm)); + + /* Enable WM */ + val = 1 << WM_CFG_EN | + MODE_MIPI_RAW << WM_CFG_MODE; + writel_relaxed(val, vfe->base + VFE_BUS_WM_CFG(wm)); +} + +static void vfe_wm_stop(struct vfe_device *vfe, u8 wm) +{ + /* Disable WM */ + writel_relaxed(0, vfe->base + VFE_BUS_WM_CFG(wm)); +} + +static void vfe_wm_update(struct vfe_device *vfe, u8 wm, u32 addr, + struct vfe_line *line) +{ + struct v4l2_pix_format_mplane *pix = + &line->video_out.active_fmt.fmt.pix_mp; + u32 stride = pix->plane_fmt[0].bytesperline; + + writel_relaxed(addr, vfe->base + VFE_BUS_WM_IMAGE_ADDR(wm)); + writel_relaxed(stride * pix->height, vfe->base + VFE_BUS_WM_FRAME_INC(wm)); +} + +static void vfe_reg_update(struct vfe_device *vfe, enum vfe_line_id line_id) +{ + vfe->reg_update |= REG_UPDATE_RDI(line_id); + + /* Enforce ordering between previous reg writes and reg update */ + wmb(); + + writel_relaxed(vfe->reg_update, vfe->base + VFE_REG_UPDATE_CMD); + + /* Enforce ordering between reg update and subsequent reg writes */ + wmb(); +} + +static inline void vfe_reg_update_clear(struct vfe_device *vfe, + enum vfe_line_id line_id) +{ + vfe->reg_update &= ~REG_UPDATE_RDI(line_id); +} + +static void vfe_enable_irq_common(struct vfe_device *vfe) +{ + vfe_reg_set(vfe, VFE_IRQ_MASK_0, ~0u); + vfe_reg_set(vfe, VFE_IRQ_MASK_1, ~0u); + + writel_relaxed(~0u, vfe->base + VFE_BUS_IRQ_MASK(0)); + writel_relaxed(~0u, vfe->base + VFE_BUS_IRQ_MASK(1)); + writel_relaxed(~0u, vfe->base + VFE_BUS_IRQ_MASK(2)); +} + +static void vfe_isr_halt_ack(struct vfe_device *vfe) +{ + complete(&vfe->halt_complete); +} + +static void vfe_isr_read(struct vfe_device *vfe, u32 *status0, u32 *status1) +{ + *status0 = readl_relaxed(vfe->base + VFE_IRQ_STATUS_0); + *status1 = readl_relaxed(vfe->base + VFE_IRQ_STATUS_1); + + writel_relaxed(*status0, vfe->base + VFE_IRQ_CLEAR_0); + writel_relaxed(*status1, vfe->base + VFE_IRQ_CLEAR_1); + + /* Enforce ordering between IRQ Clear and Global IRQ Clear */ + wmb(); + writel_relaxed(CMD_GLOBAL_CLEAR, vfe->base + VFE_IRQ_CMD); +} + +static void vfe_violation_read(struct vfe_device *vfe) +{ + u32 violation = readl_relaxed(vfe->base + VFE_VIOLATION_STATUS); + + pr_err_ratelimited("VFE: violation = 0x%08x\n", violation); +} + +/* + * vfe_isr - VFE module interrupt handler + * @irq: Interrupt line + * @dev: VFE device + * + * Return IRQ_HANDLED on success + */ +static irqreturn_t vfe_isr(int irq, void *dev) +{ + struct vfe_device *vfe = dev; + u32 status0, status1, vfe_bus_status[3]; + int i, wm; + + status0 = readl_relaxed(vfe->base + VFE_IRQ_STATUS_0); + status1 = readl_relaxed(vfe->base + VFE_IRQ_STATUS_1); + + writel_relaxed(status0, vfe->base + VFE_IRQ_CLEAR_0); + writel_relaxed(status1, vfe->base + VFE_IRQ_CLEAR_1); + + for (i = VFE_LINE_RDI0; i <= VFE_LINE_RDI2; i++) { + vfe_bus_status[i] = readl_relaxed(vfe->base + VFE_BUS_IRQ_STATUS(i)); + writel_relaxed(vfe_bus_status[i], vfe->base + VFE_BUS_IRQ_CLEAR(i)); + } + + /* Enforce ordering between IRQ reading and interpretation */ + wmb(); + + writel_relaxed(CMD_GLOBAL_CLEAR, vfe->base + VFE_IRQ_CMD); + writel_relaxed(1, vfe->base + VFE_BUS_IRQ_CLEAR_GLOBAL); + + if (status0 & STATUS_0_RESET_ACK) + vfe->isr_ops.reset_ack(vfe); + + for (i = VFE_LINE_RDI0; i <= VFE_LINE_RDI2; i++) + if (status0 & STATUS_0_RDI_REG_UPDATE(i)) + vfe->isr_ops.reg_update(vfe, i); + + for (i = VFE_LINE_RDI0; i <= VFE_LINE_RDI2; i++) + if (status0 & STATUS_1_RDI_SOF(i)) + vfe->isr_ops.sof(vfe, i); + + for (i = 0; i < MSM_VFE_COMPOSITE_IRQ_NUM; i++) + if (vfe_bus_status[0] & STATUS0_COMP_BUF_DONE(i)) + vfe->isr_ops.comp_done(vfe, i); + + for (wm = 0; wm < MSM_VFE_IMAGE_MASTERS_NUM; wm++) + if (status0 & BIT(9)) + if (vfe_bus_status[1] & STATUS1_WM_CLIENT_BUF_DONE(wm)) + vfe->isr_ops.wm_done(vfe, wm); + + return IRQ_HANDLED; +} + +/* + * vfe_halt - Trigger halt on VFE module and wait to complete + * @vfe: VFE device + * + * Return 0 on success or a negative error code otherwise + */ +static int vfe_halt(struct vfe_device *vfe) +{ + /* rely on vfe_disable_output() to stop the VFE */ + return 0; +} + +static int vfe_get_output(struct vfe_line *line) +{ + struct vfe_device *vfe = to_vfe(line); + struct vfe_output *output; + unsigned long flags; + int wm_idx; + + spin_lock_irqsave(&vfe->output_lock, flags); + + output = &line->output; + if (output->state != VFE_OUTPUT_OFF) { + dev_err(vfe->camss->dev, "Output is running\n"); + goto error; + } + + output->wm_num = 1; + + wm_idx = vfe_reserve_wm(vfe, line->id); + if (wm_idx < 0) { + dev_err(vfe->camss->dev, "Can not reserve wm\n"); + goto error_get_wm; + } + output->wm_idx[0] = wm_idx; + + output->drop_update_idx = 0; + + spin_unlock_irqrestore(&vfe->output_lock, flags); + + return 0; + +error_get_wm: + vfe_release_wm(vfe, output->wm_idx[0]); + output->state = VFE_OUTPUT_OFF; +error: + spin_unlock_irqrestore(&vfe->output_lock, flags); + + return -EINVAL; +} + +static int vfe_enable_output(struct vfe_line *line) +{ + struct vfe_device *vfe = to_vfe(line); + struct vfe_output *output = &line->output; + const struct vfe_hw_ops *ops = vfe->ops; + struct media_entity *sensor; + unsigned long flags; + unsigned int frame_skip = 0; + unsigned int i; + + sensor = camss_find_sensor(&line->subdev.entity); + if (sensor) { + struct v4l2_subdev *subdev = media_entity_to_v4l2_subdev(sensor); + + v4l2_subdev_call(subdev, sensor, g_skip_frames, &frame_skip); + /* Max frame skip is 29 frames */ + if (frame_skip > VFE_FRAME_DROP_VAL - 1) + frame_skip = VFE_FRAME_DROP_VAL - 1; + } + + spin_lock_irqsave(&vfe->output_lock, flags); + + ops->reg_update_clear(vfe, line->id); + + if (output->state != VFE_OUTPUT_OFF) { + dev_err(vfe->camss->dev, "Output is not in reserved state %d\n", + output->state); + spin_unlock_irqrestore(&vfe->output_lock, flags); + return -EINVAL; + } + + WARN_ON(output->gen2.active_num); + + output->state = VFE_OUTPUT_ON; + + output->sequence = 0; + output->wait_reg_update = 0; + reinit_completion(&output->reg_update); + + vfe_wm_start(vfe, output->wm_idx[0], line); + + for (i = 0; i < 2; i++) { + output->buf[i] = vfe_buf_get_pending(output); + if (!output->buf[i]) + break; + output->gen2.active_num++; + vfe_wm_update(vfe, output->wm_idx[0], output->buf[i]->addr[0], line); + } + + ops->reg_update(vfe, line->id); + + spin_unlock_irqrestore(&vfe->output_lock, flags); + + return 0; +} + +static void vfe_disable_output(struct vfe_line *line) +{ + struct vfe_device *vfe = to_vfe(line); + struct vfe_output *output = &line->output; + unsigned long flags; + unsigned int i; + + spin_lock_irqsave(&vfe->output_lock, flags); + for (i = 0; i < output->wm_num; i++) + vfe_wm_stop(vfe, output->wm_idx[i]); + output->gen2.active_num = 0; + spin_unlock_irqrestore(&vfe->output_lock, flags); + + vfe_reset(vfe); +} + +/* + * vfe_enable - Enable streaming on VFE line + * @line: VFE line + * + * Return 0 on success or a negative error code otherwise + */ +static int vfe_enable(struct vfe_line *line) +{ + struct vfe_device *vfe = to_vfe(line); + int ret; + + mutex_lock(&vfe->stream_lock); + + if (!vfe->stream_count) + vfe_enable_irq_common(vfe); + + vfe->stream_count++; + + mutex_unlock(&vfe->stream_lock); + + ret = vfe_get_output(line); + if (ret < 0) + goto error_get_output; + + ret = vfe_enable_output(line); + if (ret < 0) + goto error_enable_output; + + vfe->was_streaming = 1; + + return 0; + +error_enable_output: + vfe_put_output(line); + +error_get_output: + mutex_lock(&vfe->stream_lock); + + vfe->stream_count--; + + mutex_unlock(&vfe->stream_lock); + + return ret; +} + +/* + * vfe_disable - Disable streaming on VFE line + * @line: VFE line + * + * Return 0 on success or a negative error code otherwise + */ +static int vfe_disable(struct vfe_line *line) +{ + struct vfe_device *vfe = to_vfe(line); + + vfe_disable_output(line); + + vfe_put_output(line); + + mutex_lock(&vfe->stream_lock); + + vfe->stream_count--; + + mutex_unlock(&vfe->stream_lock); + + return 0; +} + +/* + * vfe_isr_sof - Process start of frame interrupt + * @vfe: VFE Device + * @line_id: VFE line + */ +static void vfe_isr_sof(struct vfe_device *vfe, enum vfe_line_id line_id) +{ + /* nop */ +} + +/* + * vfe_isr_reg_update - Process reg update interrupt + * @vfe: VFE Device + * @line_id: VFE line + */ +static void vfe_isr_reg_update(struct vfe_device *vfe, enum vfe_line_id line_id) +{ + struct vfe_output *output; + unsigned long flags; + + spin_lock_irqsave(&vfe->output_lock, flags); + vfe->ops->reg_update_clear(vfe, line_id); + + output = &vfe->line[line_id].output; + + if (output->wait_reg_update) { + output->wait_reg_update = 0; + complete(&output->reg_update); + } + + spin_unlock_irqrestore(&vfe->output_lock, flags); +} + +/* + * vfe_isr_wm_done - Process write master done interrupt + * @vfe: VFE Device + * @wm: Write master id + */ +static void vfe_isr_wm_done(struct vfe_device *vfe, u8 wm) +{ + struct vfe_line *line = &vfe->line[vfe->wm_output_map[wm]]; + struct camss_buffer *ready_buf; + struct vfe_output *output; + unsigned long flags; + u32 index; + u64 ts = ktime_get_ns(); + + spin_lock_irqsave(&vfe->output_lock, flags); + + if (vfe->wm_output_map[wm] == VFE_LINE_NONE) { + dev_err_ratelimited(vfe->camss->dev, + "Received wm done for unmapped index\n"); + goto out_unlock; + } + output = &vfe->line[vfe->wm_output_map[wm]].output; + + ready_buf = output->buf[0]; + if (!ready_buf) { + dev_err_ratelimited(vfe->camss->dev, + "Missing ready buf %d!\n", output->state); + goto out_unlock; + } + + ready_buf->vb.vb2_buf.timestamp = ts; + ready_buf->vb.sequence = output->sequence++; + + index = 0; + output->buf[0] = output->buf[1]; + if (output->buf[0]) + index = 1; + + output->buf[index] = vfe_buf_get_pending(output); + + if (output->buf[index]) + vfe_wm_update(vfe, output->wm_idx[0], output->buf[index]->addr[0], line); + else + output->gen2.active_num--; + + spin_unlock_irqrestore(&vfe->output_lock, flags); + + vb2_buffer_done(&ready_buf->vb.vb2_buf, VB2_BUF_STATE_DONE); + + return; + +out_unlock: + spin_unlock_irqrestore(&vfe->output_lock, flags); +} + +/* + * vfe_pm_domain_off - Disable power domains specific to this VFE. + * @vfe: VFE Device + */ +static void vfe_pm_domain_off(struct vfe_device *vfe) +{ + struct camss *camss = vfe->camss; + + if (vfe->id >= camss->vfe_num) + return; + + device_link_del(camss->genpd_link[vfe->id]); +} + +/* + * vfe_pm_domain_on - Enable power domains specific to this VFE. + * @vfe: VFE Device + */ +static int vfe_pm_domain_on(struct vfe_device *vfe) +{ + struct camss *camss = vfe->camss; + enum vfe_line_id id = vfe->id; + + if (id >= camss->vfe_num) + return 0; + + camss->genpd_link[id] = device_link_add(camss->dev, camss->genpd[id], + DL_FLAG_STATELESS | + DL_FLAG_PM_RUNTIME | + DL_FLAG_RPM_ACTIVE); + if (!camss->genpd_link[id]) + return -EINVAL; + + return 0; +} + +/* + * vfe_queue_buffer - Add empty buffer + * @vid: Video device structure + * @buf: Buffer to be enqueued + * + * Add an empty buffer - depending on the current number of buffers it will be + * put in pending buffer queue or directly given to the hardware to be filled. + * + * Return 0 on success or a negative error code otherwise + */ +static int vfe_queue_buffer(struct camss_video *vid, + struct camss_buffer *buf) +{ + struct vfe_line *line = container_of(vid, struct vfe_line, video_out); + struct vfe_device *vfe = to_vfe(line); + struct vfe_output *output; + unsigned long flags; + + output = &line->output; + + spin_lock_irqsave(&vfe->output_lock, flags); + + if (output->state == VFE_OUTPUT_ON && output->gen2.active_num < 2) { + output->buf[output->gen2.active_num++] = buf; + vfe_wm_update(vfe, output->wm_idx[0], buf->addr[0], line); + } else { + vfe_buf_add_pending(output, buf); + } + + spin_unlock_irqrestore(&vfe->output_lock, flags); + + return 0; +} + +static const struct vfe_isr_ops vfe_isr_ops_170 = { + .reset_ack = vfe_isr_reset_ack, + .halt_ack = vfe_isr_halt_ack, + .reg_update = vfe_isr_reg_update, + .sof = vfe_isr_sof, + .comp_done = vfe_isr_comp_done, + .wm_done = vfe_isr_wm_done, +}; + +static const struct camss_video_ops vfe_video_ops_170 = { + .queue_buffer = vfe_queue_buffer, + .flush_buffers = vfe_flush_buffers, +}; + +static void vfe_subdev_init(struct device *dev, struct vfe_device *vfe) +{ + vfe->isr_ops = vfe_isr_ops_170; + vfe->video_ops = vfe_video_ops_170; + + vfe->line_num = VFE_LINE_NUM_GEN2; +} + +const struct vfe_hw_ops vfe_ops_170 = { + .global_reset = vfe_global_reset, + .hw_version = vfe_hw_version, + .isr_read = vfe_isr_read, + .isr = vfe_isr, + .pm_domain_off = vfe_pm_domain_off, + .pm_domain_on = vfe_pm_domain_on, + .reg_update_clear = vfe_reg_update_clear, + .reg_update = vfe_reg_update, + .subdev_init = vfe_subdev_init, + .vfe_disable = vfe_disable, + .vfe_enable = vfe_enable, + .vfe_halt = vfe_halt, + .violation_read = vfe_violation_read, +}; |