diff options
Diffstat (limited to 'drivers/gpu/drm/lima/lima_bcast.c')
| -rw-r--r-- | drivers/gpu/drm/lima/lima_bcast.c | 62 |
1 files changed, 62 insertions, 0 deletions
diff --git a/drivers/gpu/drm/lima/lima_bcast.c b/drivers/gpu/drm/lima/lima_bcast.c new file mode 100644 index 000000000..fbc43f243 --- /dev/null +++ b/drivers/gpu/drm/lima/lima_bcast.c @@ -0,0 +1,62 @@ +// SPDX-License-Identifier: GPL-2.0 OR MIT +/* Copyright 2018-2019 Qiang Yu <yuq825@gmail.com> */ + +#include <linux/io.h> +#include <linux/device.h> + +#include "lima_device.h" +#include "lima_bcast.h" +#include "lima_regs.h" + +#define bcast_write(reg, data) writel(data, ip->iomem + reg) +#define bcast_read(reg) readl(ip->iomem + reg) + +void lima_bcast_enable(struct lima_device *dev, int num_pp) +{ + struct lima_sched_pipe *pipe = dev->pipe + lima_pipe_pp; + struct lima_ip *ip = dev->ip + lima_ip_bcast; + int i, mask = bcast_read(LIMA_BCAST_BROADCAST_MASK) & 0xffff0000; + + for (i = 0; i < num_pp; i++) { + struct lima_ip *pp = pipe->processor[i]; + + mask |= 1 << (pp->id - lima_ip_pp0); + } + + bcast_write(LIMA_BCAST_BROADCAST_MASK, mask); +} + +static int lima_bcast_hw_init(struct lima_ip *ip) +{ + bcast_write(LIMA_BCAST_BROADCAST_MASK, ip->data.mask << 16); + bcast_write(LIMA_BCAST_INTERRUPT_MASK, ip->data.mask); + return 0; +} + +int lima_bcast_resume(struct lima_ip *ip) +{ + return lima_bcast_hw_init(ip); +} + +void lima_bcast_suspend(struct lima_ip *ip) +{ + +} + +int lima_bcast_init(struct lima_ip *ip) +{ + int i; + + for (i = lima_ip_pp0; i <= lima_ip_pp7; i++) { + if (ip->dev->ip[i].present) + ip->data.mask |= 1 << (i - lima_ip_pp0); + } + + return lima_bcast_hw_init(ip); +} + +void lima_bcast_fini(struct lima_ip *ip) +{ + +} + |