GK SDK 源码库: XMIPCLinuxV100R005C00SPC030 (kernel/tools/open_source excluded)

2026-09-06 03:52:57 +08:00
commit b1928b41c0
21813 changed files with 4413081 additions and 0 deletions
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+// SPDX-License-Identifier: GPL-2.0+
+/*
+ * (C) Copyright 2012 Stephen Warren
+ */
+
+#include <common.h>
+#include <memalign.h>
+#include <phys2bus.h>
+#include <asm/arch/mbox.h>
+
+struct msg_set_power_state {
+	struct bcm2835_mbox_hdr hdr;
+	struct bcm2835_mbox_tag_set_power_state set_power_state;
+	u32 end_tag;
+};
+
+struct msg_get_clock_rate {
+	struct bcm2835_mbox_hdr hdr;
+	struct bcm2835_mbox_tag_get_clock_rate get_clock_rate;
+	u32 end_tag;
+};
+
+struct msg_query {
+	struct bcm2835_mbox_hdr hdr;
+	struct bcm2835_mbox_tag_physical_w_h physical_w_h;
+	u32 end_tag;
+};
+
+struct msg_setup {
+	struct bcm2835_mbox_hdr hdr;
+	struct bcm2835_mbox_tag_physical_w_h physical_w_h;
+	struct bcm2835_mbox_tag_virtual_w_h virtual_w_h;
+	struct bcm2835_mbox_tag_depth depth;
+	struct bcm2835_mbox_tag_pixel_order pixel_order;
+	struct bcm2835_mbox_tag_alpha_mode alpha_mode;
+	struct bcm2835_mbox_tag_virtual_offset virtual_offset;
+	struct bcm2835_mbox_tag_overscan overscan;
+	struct bcm2835_mbox_tag_allocate_buffer allocate_buffer;
+	struct bcm2835_mbox_tag_pitch pitch;
+	u32 end_tag;
+};
+
+int bcm2835_power_on_module(u32 module)
+{
+	ALLOC_CACHE_ALIGN_BUFFER(struct msg_set_power_state, msg_pwr, 1);
+	int ret;
+
+	BCM2835_MBOX_INIT_HDR(msg_pwr);
+	BCM2835_MBOX_INIT_TAG(&msg_pwr->set_power_state,
+			      SET_POWER_STATE);
+	msg_pwr->set_power_state.body.req.device_id = module;
+	msg_pwr->set_power_state.body.req.state =
+		BCM2835_MBOX_SET_POWER_STATE_REQ_ON |
+		BCM2835_MBOX_SET_POWER_STATE_REQ_WAIT;
+
+	ret = bcm2835_mbox_call_prop(BCM2835_MBOX_PROP_CHAN,
+				     &msg_pwr->hdr);
+	if (ret) {
+		printf("bcm2835: Could not set module %u power state\n",
+		       module);
+		return -EIO;
+	}
+
+	return 0;
+}
+
+int bcm2835_get_mmc_clock(u32 clock_id)
+{
+	ALLOC_CACHE_ALIGN_BUFFER(struct msg_get_clock_rate, msg_clk, 1);
+	int ret;
+
+	ret = bcm2835_power_on_module(BCM2835_MBOX_POWER_DEVID_SDHCI);
+	if (ret)
+		return ret;
+
+	BCM2835_MBOX_INIT_HDR(msg_clk);
+	BCM2835_MBOX_INIT_TAG(&msg_clk->get_clock_rate, GET_CLOCK_RATE);
+	msg_clk->get_clock_rate.body.req.clock_id = clock_id;
+
+	ret = bcm2835_mbox_call_prop(BCM2835_MBOX_PROP_CHAN, &msg_clk->hdr);
+	if (ret) {
+		printf("bcm2835: Could not query eMMC clock rate\n");
+		return -EIO;
+	}
+
+	return msg_clk->get_clock_rate.body.resp.rate_hz;
+}
+
+int bcm2835_get_video_size(int *widthp, int *heightp)
+{
+	ALLOC_CACHE_ALIGN_BUFFER(struct msg_query, msg_query, 1);
+	int ret;
+
+	BCM2835_MBOX_INIT_HDR(msg_query);
+	BCM2835_MBOX_INIT_TAG_NO_REQ(&msg_query->physical_w_h,
+				     GET_PHYSICAL_W_H);
+	ret = bcm2835_mbox_call_prop(BCM2835_MBOX_PROP_CHAN, &msg_query->hdr);
+	if (ret) {
+		printf("bcm2835: Could not query display resolution\n");
+		return ret;
+	}
+	*widthp = msg_query->physical_w_h.body.resp.width;
+	*heightp = msg_query->physical_w_h.body.resp.height;
+
+	return 0;
+}
+
+int bcm2835_set_video_params(int *widthp, int *heightp, int depth_bpp,
+			     int pixel_order, int alpha_mode, ulong *fb_basep,
+			     ulong *fb_sizep, int *pitchp)
+{
+	ALLOC_CACHE_ALIGN_BUFFER(struct msg_setup, msg_setup, 1);
+	int ret;
+
+	BCM2835_MBOX_INIT_HDR(msg_setup);
+	BCM2835_MBOX_INIT_TAG(&msg_setup->physical_w_h, SET_PHYSICAL_W_H);
+	msg_setup->physical_w_h.body.req.width = *widthp;
+	msg_setup->physical_w_h.body.req.height = *heightp;
+	BCM2835_MBOX_INIT_TAG(&msg_setup->virtual_w_h, SET_VIRTUAL_W_H);
+	msg_setup->virtual_w_h.body.req.width = *widthp;
+	msg_setup->virtual_w_h.body.req.height = *heightp;
+	BCM2835_MBOX_INIT_TAG(&msg_setup->depth, SET_DEPTH);
+	msg_setup->depth.body.req.bpp = 32;
+	BCM2835_MBOX_INIT_TAG(&msg_setup->pixel_order, SET_PIXEL_ORDER);
+	msg_setup->pixel_order.body.req.order = pixel_order;
+	BCM2835_MBOX_INIT_TAG(&msg_setup->alpha_mode, SET_ALPHA_MODE);
+	msg_setup->alpha_mode.body.req.alpha = alpha_mode;
+	BCM2835_MBOX_INIT_TAG(&msg_setup->virtual_offset, SET_VIRTUAL_OFFSET);
+	msg_setup->virtual_offset.body.req.x = 0;
+	msg_setup->virtual_offset.body.req.y = 0;
+	BCM2835_MBOX_INIT_TAG(&msg_setup->overscan, SET_OVERSCAN);
+	msg_setup->overscan.body.req.top = 0;
+	msg_setup->overscan.body.req.bottom = 0;
+	msg_setup->overscan.body.req.left = 0;
+	msg_setup->overscan.body.req.right = 0;
+	BCM2835_MBOX_INIT_TAG(&msg_setup->allocate_buffer, ALLOCATE_BUFFER);
+	msg_setup->allocate_buffer.body.req.alignment = 0x100;
+	BCM2835_MBOX_INIT_TAG_NO_REQ(&msg_setup->pitch, GET_PITCH);
+
+	ret = bcm2835_mbox_call_prop(BCM2835_MBOX_PROP_CHAN, &msg_setup->hdr);
+	if (ret) {
+		printf("bcm2835: Could not configure display\n");
+		return ret;
+	}
+	*widthp = msg_setup->physical_w_h.body.resp.width;
+	*heightp = msg_setup->physical_w_h.body.resp.height;
+	*pitchp = msg_setup->pitch.body.resp.pitch;
+	*fb_basep = bus_to_phys(
+			msg_setup->allocate_buffer.body.resp.fb_address);
+	*fb_sizep = msg_setup->allocate_buffer.body.resp.fb_size;
+
+	return 0;
+}