u-boot/drivers/video/rockchip/rk_vop.c
Jacob Chen 8530783594 rockchip: video: Add LVDS support in vop driver
LVDS have a different display out mode, add code to get right flag.

The vop_ip decide display device and the remote_vop_id decide which
vop was being used. So we should use the remote_vop_id to set DCLK_VOP.

Signed-off-by: Jacob Chen <jacob-chen@iotwrt.com>
Acked-by: Simon Glass <sjg@chromium.org>
2016-03-14 22:24:10 +01:00

358 lines
9.6 KiB
C

/*
* Copyright (c) 2015 Google, Inc
* Copyright 2014 Rockchip Inc.
*
* SPDX-License-Identifier: GPL-2.0+
*/
#include <common.h>
#include <clk.h>
#include <display.h>
#include <dm.h>
#include <edid.h>
#include <regmap.h>
#include <syscon.h>
#include <video.h>
#include <asm/gpio.h>
#include <asm/hardware.h>
#include <asm/io.h>
#include <asm/arch/clock.h>
#include <asm/arch/cru_rk3288.h>
#include <asm/arch/grf_rk3288.h>
#include <asm/arch/edp_rk3288.h>
#include <asm/arch/hdmi_rk3288.h>
#include <asm/arch/vop_rk3288.h>
#include <dm/device-internal.h>
#include <dm/uclass-internal.h>
#include <dt-bindings/clock/rk3288-cru.h>
#include <power/regulator.h>
DECLARE_GLOBAL_DATA_PTR;
struct rk_vop_priv {
struct rk3288_vop *regs;
struct rk3288_grf *grf;
};
void rkvop_enable(struct rk3288_vop *regs, ulong fbbase,
int fb_bits_per_pixel, const struct display_timing *edid)
{
u32 lb_mode;
u32 rgb_mode;
u32 hactive = edid->hactive.typ;
u32 vactive = edid->vactive.typ;
writel(V_ACT_WIDTH(hactive - 1) | V_ACT_HEIGHT(vactive - 1),
&regs->win0_act_info);
writel(V_DSP_XST(edid->hsync_len.typ + edid->hback_porch.typ) |
V_DSP_YST(edid->vsync_len.typ + edid->vback_porch.typ),
&regs->win0_dsp_st);
writel(V_DSP_WIDTH(hactive - 1) |
V_DSP_HEIGHT(vactive - 1),
&regs->win0_dsp_info);
clrsetbits_le32(&regs->win0_color_key, M_WIN0_KEY_EN | M_WIN0_KEY_COLOR,
V_WIN0_KEY_EN(0) | V_WIN0_KEY_COLOR(0));
switch (fb_bits_per_pixel) {
case 16:
rgb_mode = RGB565;
writel(V_RGB565_VIRWIDTH(hactive), &regs->win0_vir);
break;
case 24:
rgb_mode = RGB888;
writel(V_RGB888_VIRWIDTH(hactive), &regs->win0_vir);
break;
case 32:
default:
rgb_mode = ARGB8888;
writel(V_ARGB888_VIRWIDTH(hactive), &regs->win0_vir);
break;
}
if (hactive > 2560)
lb_mode = LB_RGB_3840X2;
else if (hactive > 1920)
lb_mode = LB_RGB_2560X4;
else if (hactive > 1280)
lb_mode = LB_RGB_1920X5;
else
lb_mode = LB_RGB_1280X8;
clrsetbits_le32(&regs->win0_ctrl0,
M_WIN0_LB_MODE | M_WIN0_DATA_FMT | M_WIN0_EN,
V_WIN0_LB_MODE(lb_mode) | V_WIN0_DATA_FMT(rgb_mode) |
V_WIN0_EN(1));
writel(fbbase, &regs->win0_yrgb_mst);
writel(0x01, &regs->reg_cfg_done); /* enable reg config */
}
void rkvop_mode_set(struct rk3288_vop *regs,
const struct display_timing *edid, enum vop_modes mode)
{
u32 hactive = edid->hactive.typ;
u32 vactive = edid->vactive.typ;
u32 hsync_len = edid->hsync_len.typ;
u32 hback_porch = edid->hback_porch.typ;
u32 vsync_len = edid->vsync_len.typ;
u32 vback_porch = edid->vback_porch.typ;
u32 hfront_porch = edid->hfront_porch.typ;
u32 vfront_porch = edid->vfront_porch.typ;
uint flags;
int mode_flags;
switch (mode) {
case VOP_MODE_HDMI:
clrsetbits_le32(&regs->sys_ctrl, M_ALL_OUT_EN,
V_HDMI_OUT_EN(1));
break;
case VOP_MODE_EDP:
default:
clrsetbits_le32(&regs->sys_ctrl, M_ALL_OUT_EN,
V_EDP_OUT_EN(1));
break;
case VOP_MODE_LVDS:
clrsetbits_le32(&regs->sys_ctrl, M_ALL_OUT_EN,
V_RGB_OUT_EN(1));
break;
}
if (mode == VOP_MODE_HDMI || mode == VOP_MODE_EDP)
/* RGBaaa */
mode_flags = 15;
else
/* RGB888 */
mode_flags = 0;
flags = V_DSP_OUT_MODE(mode_flags) |
V_DSP_HSYNC_POL(!!(edid->flags & DISPLAY_FLAGS_HSYNC_HIGH)) |
V_DSP_VSYNC_POL(!!(edid->flags & DISPLAY_FLAGS_VSYNC_HIGH));
clrsetbits_le32(&regs->dsp_ctrl0,
M_DSP_OUT_MODE | M_DSP_VSYNC_POL | M_DSP_HSYNC_POL,
flags);
writel(V_HSYNC(hsync_len) |
V_HORPRD(hsync_len + hback_porch + hactive + hfront_porch),
&regs->dsp_htotal_hs_end);
writel(V_HEAP(hsync_len + hback_porch + hactive) |
V_HASP(hsync_len + hback_porch),
&regs->dsp_hact_st_end);
writel(V_VSYNC(vsync_len) |
V_VERPRD(vsync_len + vback_porch + vactive + vfront_porch),
&regs->dsp_vtotal_vs_end);
writel(V_VAEP(vsync_len + vback_porch + vactive)|
V_VASP(vsync_len + vback_porch),
&regs->dsp_vact_st_end);
writel(V_HEAP(hsync_len + hback_porch + hactive) |
V_HASP(hsync_len + hback_porch),
&regs->post_dsp_hact_info);
writel(V_VAEP(vsync_len + vback_porch + vactive)|
V_VASP(vsync_len + vback_porch),
&regs->post_dsp_vact_info);
writel(0x01, &regs->reg_cfg_done); /* enable reg config */
}
/**
* rk_display_init() - Try to enable the given display device
*
* This function performs many steps:
* - Finds the display device being referenced by @ep_node
* - Puts the VOP's ID into its uclass platform data
* - Probes the device to set it up
* - Reads the EDID timing information
* - Sets up the VOP clocks, etc. for the selected pixel clock and display mode
* - Enables the display (the display device handles this and will do different
* things depending on the display type)
* - Tells the uclass about the display resolution so that the console will
* appear correctly
*
* @dev: VOP device that we want to connect to the display
* @fbbase: Frame buffer address
* @l2bpp Log2 of bits-per-pixels for the display
* @ep_node: Device tree node to process - this is the offset of an endpoint
* node within the VOP's 'port' list.
* @return 0 if OK, -ve if something went wrong
*/
int rk_display_init(struct udevice *dev, ulong fbbase,
enum video_log2_bpp l2bpp, int ep_node)
{
struct video_priv *uc_priv = dev_get_uclass_priv(dev);
const void *blob = gd->fdt_blob;
struct rk_vop_priv *priv = dev_get_priv(dev);
int vop_id, remote_vop_id;
struct rk3288_vop *regs = priv->regs;
struct display_timing timing;
struct udevice *disp;
int ret, remote, i, offset;
struct display_plat *disp_uc_plat;
struct udevice *clk;
vop_id = fdtdec_get_int(blob, ep_node, "reg", -1);
debug("vop_id=%d\n", vop_id);
remote = fdtdec_lookup_phandle(blob, ep_node, "remote-endpoint");
if (remote < 0)
return -EINVAL;
remote_vop_id = fdtdec_get_int(blob, remote, "reg", -1);
debug("remote vop_id=%d\n", remote_vop_id);
for (i = 0, offset = remote; i < 3 && offset > 0; i++)
offset = fdt_parent_offset(blob, offset);
if (offset < 0) {
debug("%s: Invalid remote-endpoint position\n", dev->name);
return -EINVAL;
}
ret = uclass_find_device_by_of_offset(UCLASS_DISPLAY, offset, &disp);
if (ret) {
debug("%s: device '%s' display not found (ret=%d)\n", __func__,
dev->name, ret);
return ret;
}
disp_uc_plat = dev_get_uclass_platdata(disp);
debug("Found device '%s', disp_uc_priv=%p\n", disp->name, disp_uc_plat);
disp_uc_plat->source_id = remote_vop_id;
disp_uc_plat->src_dev = dev;
ret = device_probe(disp);
if (ret) {
debug("%s: device '%s' display won't probe (ret=%d)\n",
__func__, dev->name, ret);
return ret;
}
ret = display_read_timing(disp, &timing);
if (ret) {
debug("%s: Failed to read timings\n", __func__);
return ret;
}
ret = rkclk_get_clk(CLK_NEW, &clk);
if (!ret) {
ret = clk_set_periph_rate(clk, DCLK_VOP0 + remote_vop_id,
timing.pixelclock.typ);
}
if (ret) {
debug("%s: Failed to set pixel clock: ret=%d\n", __func__, ret);
return ret;
}
rkvop_mode_set(regs, &timing, vop_id);
rkvop_enable(regs, fbbase, 1 << l2bpp, &timing);
ret = display_enable(disp, 1 << l2bpp, &timing);
if (ret)
return ret;
uc_priv->xsize = timing.hactive.typ;
uc_priv->ysize = timing.vactive.typ;
uc_priv->bpix = l2bpp;
debug("fb=%lx, size=%d %d\n", fbbase, uc_priv->xsize, uc_priv->ysize);
return 0;
}
static int rk_vop_probe(struct udevice *dev)
{
struct video_uc_platdata *plat = dev_get_uclass_platdata(dev);
const void *blob = gd->fdt_blob;
struct rk_vop_priv *priv = dev_get_priv(dev);
struct udevice *reg;
int ret, port, node;
/* Before relocation we don't need to do anything */
if (!(gd->flags & GD_FLG_RELOC))
return 0;
priv->grf = syscon_get_first_range(ROCKCHIP_SYSCON_GRF);
priv->regs = (struct rk3288_vop *)dev_get_addr(dev);
/* lcdc(vop) iodomain select 1.8V */
rk_setreg(&priv->grf->io_vsel, 1 << 0);
/*
* Try some common regulators. We should really get these from the
* device tree somehow.
*/
ret = regulator_autoset_by_name("vcc18_lcd", &reg);
if (ret)
debug("%s: Cannot autoset regulator vcc18_lcd\n", __func__);
ret = regulator_autoset_by_name("VCC18_LCD", &reg);
if (ret)
debug("%s: Cannot autoset regulator VCC18_LCD\n", __func__);
ret = regulator_autoset_by_name("vdd10_lcd_pwren_h", &reg);
if (ret) {
debug("%s: Cannot autoset regulator vdd10_lcd_pwren_h\n",
__func__);
}
ret = regulator_autoset_by_name("vdd10_lcd", &reg);
if (ret) {
debug("%s: Cannot autoset regulator vdd10_lcd\n",
__func__);
}
ret = regulator_autoset_by_name("VDD10_LCD", &reg);
if (ret) {
debug("%s: Cannot autoset regulator VDD10_LCD\n",
__func__);
}
ret = regulator_autoset_by_name("vcc33_lcd", &reg);
if (ret)
debug("%s: Cannot autoset regulator vcc33_lcd\n", __func__);
/*
* Try all the ports until we find one that works. In practice this
* tries EDP first if available, then HDMI.
*/
port = fdt_subnode_offset(blob, dev->of_offset, "port");
if (port < 0)
return -EINVAL;
for (node = fdt_first_subnode(blob, port);
node > 0;
node = fdt_next_subnode(blob, node)) {
ret = rk_display_init(dev, plat->base, VIDEO_BPP16, node);
if (ret)
debug("Device failed: ret=%d\n", ret);
if (!ret)
break;
}
return ret;
}
static int rk_vop_bind(struct udevice *dev)
{
struct video_uc_platdata *plat = dev_get_uclass_platdata(dev);
plat->size = 1920 * 1080 * 2;
return 0;
}
static const struct video_ops rk_vop_ops = {
};
static const struct udevice_id rk_vop_ids[] = {
{ .compatible = "rockchip,rk3288-vop" },
{ }
};
U_BOOT_DRIVER(rk_vop) = {
.name = "rk_vop",
.id = UCLASS_VIDEO,
.of_match = rk_vop_ids,
.ops = &rk_vop_ops,
.bind = rk_vop_bind,
.probe = rk_vop_probe,
.priv_auto_alloc_size = sizeof(struct rk_vop_priv),
};