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camss-vfe-680.c

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linux-6.19.14/drivers/media/platform/qcom/camss/camss-vfe-680.c C
  1// SPDX-License-Identifier: GPL-2.0
  2/*
  3 * camss-vfe-680.c
  4 *
  5 * Qualcomm MSM Camera Subsystem - VFE (Video Front End) Module v680
  6 *
  7 * Copyright (C) 2025 Linaro Ltd.
  8 */
  9
 10#include <linux/delay.h>
 11#include <linux/interrupt.h>
 12#include <linux/io.h>
 13#include <linux/iopoll.h>
 14
 15#include "camss.h"
 16#include "camss-vfe.h"
 17
 18#define VFE_TOP_IRQn_STATUS(vfe, n)		((vfe_is_lite(vfe) ? 0x1c : 0x44) + (n) * 4)
 19#define VFE_TOP_IRQn_MASK(vfe, n)		((vfe_is_lite(vfe) ? 0x24 : 0x34) + (n) * 4)
 20#define VFE_TOP_IRQn_CLEAR(vfe, n)		((vfe_is_lite(vfe) ? 0x2c : 0x3c) + (n) * 4)
 21#define		VFE_IRQ1_SOF(vfe, n)		((vfe_is_lite(vfe) ? BIT(2) : BIT(8)) << ((n) * 2))
 22#define		VFE_IRQ1_EOF(vfe, n)		((vfe_is_lite(vfe) ? BIT(3) : BIT(9)) << ((n) * 2))
 23#define VFE_TOP_IRQ_CMD(vfe)			(vfe_is_lite(vfe) ? 0x38 : 0x30)
 24#define		VFE_TOP_IRQ_CMD_GLOBAL_CLEAR	BIT(0)
 25#define VFE_TOP_DIAG_CONFIG			(vfe_is_lite(vfe) ? 0x40 : 0x50)
 26
 27#define VFE_TOP_DEBUG_11(vfe)			(vfe_is_lite(vfe) ? 0x40 : 0xcc)
 28#define VFE_TOP_DEBUG_12(vfe)			(vfe_is_lite(vfe) ? 0x40 : 0xd0)
 29#define VFE_TOP_DEBUG_13(vfe)			(vfe_is_lite(vfe) ? 0x40 : 0xd4)
 30
 31#define VFE_BUS_IRQn_MASK(vfe, n)		((vfe_is_lite(vfe) ? 0x218 : 0xc18) + (n) * 4)
 32#define VFE_BUS_IRQn_CLEAR(vfe, n)		((vfe_is_lite(vfe) ? 0x220 : 0xc20) + (n) * 4)
 33#define VFE_BUS_IRQn_STATUS(vfe, n)		((vfe_is_lite(vfe) ? 0x228 : 0xc28) + (n) * 4)
 34#define VFE_BUS_IRQ_GLOBAL_CLEAR(vfe)		(vfe_is_lite(vfe) ? 0x230 : 0xc30)
 35#define VFE_BUS_WR_VIOLATION_STATUS(vfe)	(vfe_is_lite(vfe) ? 0x264 : 0xc64)
 36#define VFE_BUS_WR_OVERFLOW_STATUS(vfe)		(vfe_is_lite(vfe) ? 0x268 : 0xc68)
 37#define VFE_BUS_WR_IMAGE_VIOLATION_STATUS(vfe)	(vfe_is_lite(vfe) ? 0x270 : 0xc70)
 38
 39#define VFE_BUS_WRITE_CLIENT_CFG(vfe, c)	((vfe_is_lite(vfe) ? 0x400 : 0xe00) + (c) * 0x100)
 40#define		VFE_BUS_WRITE_CLIENT_CFG_EN	BIT(0)
 41#define VFE_BUS_IMAGE_ADDR(vfe, c)		((vfe_is_lite(vfe) ? 0x404 : 0xe04) + (c) * 0x100)
 42#define VFE_BUS_FRAME_INCR(vfe, c)		((vfe_is_lite(vfe) ? 0x408 : 0xe08) + (c) * 0x100)
 43#define VFE_BUS_IMAGE_CFG0(vfe, c)		((vfe_is_lite(vfe) ? 0x40c : 0xe0c) + (c) * 0x100)
 44#define		VFE_BUS_IMAGE_CFG0_DATA(h, s)	(((h) << 16) | ((s) >> 4))
 45#define WM_IMAGE_CFG_0_DEFAULT_WIDTH		(0xFFFF)
 46
 47#define VFE_BUS_IMAGE_CFG1(vfe, c)		((vfe_is_lite(vfe) ? 0x410 : 0xe10) + (c) * 0x100)
 48#define VFE_BUS_IMAGE_CFG2(vfe, c)		((vfe_is_lite(vfe) ? 0x414 : 0xe14) + (c) * 0x100)
 49#define VFE_BUS_PACKER_CFG(vfe, c)		((vfe_is_lite(vfe) ? 0x418 : 0xe18) + (c) * 0x100)
 50#define VFE_BUS_IRQ_SUBSAMPLE_PERIOD(vfe, c)	((vfe_is_lite(vfe) ? 0x430 : 0xe30) + (c) * 0x100)
 51#define VFE_BUS_IRQ_SUBSAMPLE_PATTERN(vfe, c)	((vfe_is_lite(vfe) ? 0x434 : 0xe34) + (c) * 0x100)
 52#define VFE_BUS_FRAMEDROP_PERIOD(vfe, c)	((vfe_is_lite(vfe) ? 0x438 : 0xe38) + (c) * 0x100)
 53#define VFE_BUS_FRAMEDROP_PATTERN(vfe, c)	((vfe_is_lite(vfe) ? 0x43c : 0xe3c) + (c) * 0x100)
 54#define VFE_BUS_MMU_PREFETCH_CFG(vfe, c)	((vfe_is_lite(vfe) ? 0x460 : 0xe60) + (c) * 0x100)
 55#define		VFE_BUS_MMU_PREFETCH_CFG_EN	BIT(0)
 56#define VFE_BUS_MMU_PREFETCH_MAX_OFFSET(vfe, c)	((vfe_is_lite(vfe) ? 0x464 : 0xe64) + (c) * 0x100)
 57#define VFE_BUS_ADDR_STATUS0(vfe, c)		((vfe_is_lite(vfe) ? 0x470 : 0xe70) + (c) * 0x100)
 58
 59/*
 60 * TODO: differentiate the port id based on requested type of RDI, BHIST etc
 61 *
 62 * IFE write master IDs
 63 *
 64 * VIDEO_FULL_Y		0
 65 * VIDEO_FULL_C		1
 66 * VIDEO_DS_4:1		2
 67 * VIDEO_DS_16:1	3
 68 * DISPLAY_FULL_Y	4
 69 * DISPLAY_FULL_C	5
 70 * DISPLAY_DS_4:1	6
 71 * DISPLAY_DS_16:1	7
 72 * FD_Y			8
 73 * FD_C			9
 74 * PIXEL_RAW		10
 75 * STATS_BE0		11
 76 * STATS_BHIST0		12
 77 * STATS_TINTLESS_BG	13
 78 * STATS_AWB_BG		14
 79 * STATS_AWB_BFW	15
 80 * STATS_BAF		16
 81 * STATS_BHIST		17
 82 * STATS_RS		18
 83 * STATS_IHIST		19
 84 * SPARSE_PD		20
 85 * PDAF_V2.0_PD_DATA	21
 86 * PDAF_V2.0_SAD	22
 87 * LCR			23
 88 * RDI0			24
 89 * RDI1			25
 90 * RDI2			26
 91 * LTM_STATS		27
 92 *
 93 * IFE Lite write master IDs
 94 *
 95 * RDI0			0
 96 * RDI1			1
 97 * RDI2			2
 98 * RDI3			3
 99 * GAMMA		4
100 * BE			5
101 */
102
103/* TODO: assign an ENUM in resources and use the provided master
104 *       id directly for RDI, STATS, AWB_BG, BHIST.
105 *       This macro only works because RDI is all we support right now.
106 */
107#define RDI_WM(n)			((vfe_is_lite(vfe) ? 0 : 24) + (n))
108
109static void vfe_global_reset(struct vfe_device *vfe)
110{
111	/* VFE680 has no global reset, simply report a completion */
112	complete(&vfe->reset_complete);
113}
114
115/*
116 * vfe_isr - VFE module interrupt handler
117 * @irq: Interrupt line
118 * @dev: VFE device
119 *
120 * Return IRQ_HANDLED on success
121 */
122static irqreturn_t vfe_isr(int irq, void *dev)
123{
124	return IRQ_HANDLED;
125}
126
127/*
128 * vfe_halt - Trigger halt on VFE module and wait to complete
129 * @vfe: VFE device
130 *
131 * Return 0 on success or a negative error code otherwise
132 */
133static int vfe_halt(struct vfe_device *vfe)
134{
135	/* rely on vfe_disable_output() to stop the VFE */
136	return 0;
137}
138
139static void vfe_disable_irq(struct vfe_device *vfe)
140{
141	writel(0u, vfe->base + VFE_TOP_IRQn_MASK(vfe, 0));
142	writel(0u, vfe->base + VFE_TOP_IRQn_MASK(vfe, 1));
143	writel(0u, vfe->base + VFE_BUS_IRQn_MASK(vfe, 0));
144	writel(0u, vfe->base + VFE_BUS_IRQn_MASK(vfe, 1));
145}
146
147static void vfe_wm_update(struct vfe_device *vfe, u8 rdi, u32 addr,
148			  struct vfe_line *line)
149{
150	u8 wm = RDI_WM(rdi);
151
152	writel(addr, vfe->base + VFE_BUS_IMAGE_ADDR(vfe, wm));
153}
154
155static void vfe_wm_start(struct vfe_device *vfe, u8 rdi, struct vfe_line *line)
156{
157	struct v4l2_pix_format_mplane *pix =
158		&line->video_out.active_fmt.fmt.pix_mp;
159	u32 stride = pix->plane_fmt[0].bytesperline;
160	u32 cfg;
161	u8 wm;
162
163	cfg = VFE_BUS_IMAGE_CFG0_DATA(pix->height, stride);
164	wm = RDI_WM(rdi);
165
166	writel(cfg, vfe->base + VFE_BUS_IMAGE_CFG0(vfe, wm));
167	writel(0, vfe->base + VFE_BUS_IMAGE_CFG1(vfe, wm));
168	writel(stride, vfe->base + VFE_BUS_IMAGE_CFG2(vfe, wm));
169	writel(0, vfe->base + VFE_BUS_PACKER_CFG(vfe, wm));
170
171	/* Set total frame increment value */
172	writel(pix->plane_fmt[0].bytesperline * pix->height,
173	       vfe->base + VFE_BUS_FRAME_INCR(vfe, wm));
174
175	/* MMU */
176	writel(VFE_BUS_MMU_PREFETCH_CFG_EN, vfe->base + VFE_BUS_MMU_PREFETCH_CFG(vfe, wm));
177	writel(~0u, vfe->base + VFE_BUS_MMU_PREFETCH_MAX_OFFSET(vfe, wm));
178
179	/* no dropped frames, one irq per frame */
180	writel(1, vfe->base + VFE_BUS_FRAMEDROP_PATTERN(vfe, wm));
181	writel(0, vfe->base + VFE_BUS_FRAMEDROP_PERIOD(vfe, wm));
182	writel(1, vfe->base + VFE_BUS_IRQ_SUBSAMPLE_PATTERN(vfe, wm));
183	writel(0, vfe->base + VFE_BUS_IRQ_SUBSAMPLE_PERIOD(vfe, wm));
184
185	/* We don't process IRQs for VFE in RDI mode at the moment */
186	vfe_disable_irq(vfe);
187
188	/* Enable WM */
189	writel(VFE_BUS_WRITE_CLIENT_CFG_EN,
190	       vfe->base + VFE_BUS_WRITE_CLIENT_CFG(vfe, wm));
191
192	dev_dbg(vfe->camss->dev, "RDI%d WM:%d width %d height %d stride %d\n",
193		rdi, wm, pix->width, pix->height, stride);
194}
195
196static void vfe_wm_stop(struct vfe_device *vfe, u8 rdi)
197{
198	u8 wm = RDI_WM(rdi);
199
200	writel(0, vfe->base + VFE_BUS_WRITE_CLIENT_CFG(vfe, wm));
201}
202
203static const struct camss_video_ops vfe_video_ops_680 = {
204	.queue_buffer = vfe_queue_buffer_v2,
205	.flush_buffers = vfe_flush_buffers,
206};
207
208static void vfe_subdev_init(struct device *dev, struct vfe_device *vfe)
209{
210	vfe->video_ops = vfe_video_ops_680;
211}
212
213static void vfe_reg_update(struct vfe_device *vfe, enum vfe_line_id line_id)
214{
215	int port_id = line_id;
216
217	camss_reg_update(vfe->camss, vfe->id, port_id, false);
218}
219
220static inline void vfe_reg_update_clear(struct vfe_device *vfe,
221					enum vfe_line_id line_id)
222{
223	int port_id = line_id;
224
225	camss_reg_update(vfe->camss, vfe->id, port_id, true);
226}
227
228const struct vfe_hw_ops vfe_ops_680 = {
229	.global_reset = vfe_global_reset,
230	.hw_version = vfe_hw_version,
231	.isr = vfe_isr,
232	.pm_domain_off = vfe_pm_domain_off,
233	.pm_domain_on = vfe_pm_domain_on,
234	.subdev_init = vfe_subdev_init,
235	.vfe_disable = vfe_disable,
236	.vfe_enable = vfe_enable_v2,
237	.vfe_halt = vfe_halt,
238	.vfe_wm_start = vfe_wm_start,
239	.vfe_wm_stop = vfe_wm_stop,
240	.vfe_buf_done = vfe_buf_done,
241	.vfe_wm_update = vfe_wm_update,
242	.reg_update = vfe_reg_update,
243	.reg_update_clear = vfe_reg_update_clear,
244};
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