drivers/gpu/drm/amd/amdgpu/isp_v4_1_0.c

Source file repositories/reference/linux-study-clean/drivers/gpu/drm/amd/amdgpu/isp_v4_1_0.c

File Facts

System
Linux kernel
Corpus path
drivers/gpu/drm/amd/amdgpu/isp_v4_1_0.c
Extension
.c
Size
5904 bytes
Lines
191
Domain
Driver Families
Bucket
drivers/gpu
Inferred role
Driver Families: implementation source
Status
source implementation candidate

Why This File Exists

Repeatable hardware-adapter layer. Deep compatibility for every driver is out of scope; this atlas records patterns, probe lifecycles, bus glue, IRQ/DMA usage, and links back to core abstractions.

Dependency Surface

Detected Declarations

Annotated Snippet

#include "amdgpu.h"
#include "isp_v4_1_0.h"

static const unsigned int isp_4_1_0_int_srcid[MAX_ISP410_INT_SRC] = {
	ISP_4_1__SRCID__ISP_RINGBUFFER_WPT9,
	ISP_4_1__SRCID__ISP_RINGBUFFER_WPT10,
	ISP_4_1__SRCID__ISP_RINGBUFFER_WPT11,
	ISP_4_1__SRCID__ISP_RINGBUFFER_WPT12,
	ISP_4_1__SRCID__ISP_RINGBUFFER_WPT13,
	ISP_4_1__SRCID__ISP_RINGBUFFER_WPT14,
	ISP_4_1__SRCID__ISP_RINGBUFFER_WPT15,
	ISP_4_1__SRCID__ISP_RINGBUFFER_WPT16
};

static int isp_v4_1_0_hw_init(struct amdgpu_isp *isp)
{
	struct amdgpu_device *adev = isp->adev;
	int idx, int_idx, num_res, r;
	u64 isp_base;

	if (adev->rmmio_size == 0 || adev->rmmio_size < 0x5289)
		return -EINVAL;

	isp_base = adev->rmmio_base;

	isp->isp_cell = kzalloc_objs(struct mfd_cell, 3);
	if (!isp->isp_cell) {
		r = -ENOMEM;
		drm_err(&adev->ddev,
			"%s: isp mfd cell alloc failed\n", __func__);
		goto failure;
	}

	num_res = MAX_ISP410_MEM_RES + MAX_ISP410_INT_SRC;
	isp->isp_res = kzalloc_objs(struct resource, num_res);
	if (!isp->isp_res) {
		r = -ENOMEM;
		drm_err(&adev->ddev,
			"%s: isp mfd res alloc failed\n", __func__);
		goto failure;
	}

	isp->isp_pdata = kzalloc_obj(*isp->isp_pdata);
	if (!isp->isp_pdata) {
		r = -ENOMEM;
		drm_err(&adev->ddev,
			"%s: isp platform data alloc failed\n", __func__);
		goto failure;
	}

	/* initialize isp platform data */
	isp->isp_pdata->adev = (void *)adev;
	isp->isp_pdata->asic_type = adev->asic_type;
	isp->isp_pdata->base_rmmio_size = adev->rmmio_size;

	isp->isp_res[0].name = "isp_4_1_0_reg";
	isp->isp_res[0].flags = IORESOURCE_MEM;
	isp->isp_res[0].start = isp_base;
	isp->isp_res[0].end = isp_base + ISP_REGS_OFFSET_END;

	isp->isp_res[1].name = "isp_4_1_phy0_reg";
	isp->isp_res[1].flags = IORESOURCE_MEM;
	isp->isp_res[1].start = isp_base + ISP410_PHY0_OFFSET;
	isp->isp_res[1].end = isp_base + ISP410_PHY0_OFFSET + ISP410_PHY0_SIZE;

	for (idx = MAX_ISP410_MEM_RES, int_idx = 0; idx < num_res; idx++, int_idx++) {
		isp->isp_res[idx].name = "isp_4_1_0_irq";
		isp->isp_res[idx].flags = IORESOURCE_IRQ;
		isp->isp_res[idx].start =
			amdgpu_irq_create_mapping(adev, isp_4_1_0_int_srcid[int_idx]);
		isp->isp_res[idx].end =
			isp->isp_res[idx].start;
	}

	isp->isp_cell[0].name = "amd_isp_capture";
	isp->isp_cell[0].num_resources = num_res;
	isp->isp_cell[0].resources = &isp->isp_res[0];
	isp->isp_cell[0].platform_data = isp->isp_pdata;
	isp->isp_cell[0].pdata_size = sizeof(struct isp_platform_data);

	/* initialize isp i2c platform data */
	isp->isp_i2c_res = kzalloc_objs(struct resource, 1);
	if (!isp->isp_i2c_res) {
		r = -ENOMEM;
		drm_err(&adev->ddev,
			"%s: isp mfd res alloc failed\n", __func__);
		goto failure;
	}

	isp->isp_i2c_res[0].name = "isp_i2c0_reg";

Annotation

Implementation Notes