display/aml-canvas/aml-canvas.c

22 #include "aml-canvas.h"
25     aml_canvas_t* canvas = ctx;
26     mmio_buffer_release(&canvas->dmc_regs);
28         if (canvas->pmt_handle[index] != ZX_HANDLE_INVALID) {
29             zx_pmt_unpin(canvas->pmt_handle[index]);
30             canvas->pmt_handle[index] = ZX_HANDLE_INVALID;
33     free(canvas);
39     aml_canvas_t* canvas = ctx;
51     mtx_lock(&canvas->lock);
62     // find an unused canvas index
64         if (canvas->pmt_handle[index] == ZX_HANDLE_INVALID) {
70         CANVAS_ERROR("All canvas indexes are currently in use\n");
75     status = zx_bti_pin(canvas->bti, ZX_BTI_PERM_READ | ZX_BTI_PERM_WRITE | ZX_BTI_CONTIGUOUS,
78                         &canvas->pmt_handle[index]);
87         zx_handle_close(canvas->pmt_handle[index]);
88         canvas->pmt_handle[index] = ZX_HANDLE_INVALID;
116     mtx_unlock(&canvas->lock);
121     aml_canvas_t* canvas = ctx;
123     mtx_lock(&canvas->lock);
125     zx_pmt_unpin(canvas->pmt_handle[canvas_idx]);
126     canvas->pmt_handle[canvas_idx] = ZX_HANDLE_INVALID;
128     mtx_unlock(&canvas->lock);
132 static void aml_canvas_init(aml_canvas_t* canvas) {
143     aml_canvas_t* canvas = ctx;
144     device_remove(canvas->zxdev);
205     aml_canvas_t* canvas = calloc(1, sizeof(aml_canvas_t));
206     if (!canvas) {
211     status = device_get_protocol(parent, ZX_PROTOCOL_PLATFORM_DEV, &canvas->pdev);
224     status = pdev_get_bti(&canvas->pdev, 0, &canvas->bti);
231     status = pdev_map_mmio_buffer2(&canvas->pdev, 0,
233                                   &canvas->dmc_regs);
240     aml_canvas_init(canvas);
242     mtx_init(&canvas->lock, mtx_plain);
246         .name = "aml-canvas",
247         .ctx = canvas,
252     status = device_add(parent, &args, &canvas->zxdev);
257     canvas->canvas.ops = &canvas_ops;
258     canvas->canvas.ctx = canvas;
260     // Register the canvas protocol with the platform bus
261     pbus_register_protocol(&pbus, ZX_PROTOCOL_AMLOGIC_CANVAS, &canvas->canvas, aml_canvas_proxy_cb,
262                            canvas);
265     aml_canvas_release(canvas);