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freebsd-skq/sys/arm/freescale/vybrid/vf_dcu4.c
Pedro F. Giffuni af3dc4a7ca sys/arm: further adoption of SPDX licensing ID tags. 
Mainly focus on files that use BSD 2-Clause license, however the tool I
was using misidentified many licenses so this was mostly a manual - error
prone - task.

The Software Package Data Exchange (SPDX) group provides a specification
to make it easier for automated tools to detect and summarize well known
opensource licenses. We are gradually adopting the specification, noting
that the tags are considered only advisory and do not, in any way,
superceed or replace the license texts.
2017-11-27 15:04:10 +00:00

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/*-
* SPDX-License-Identifier: BSD-2-Clause-FreeBSD
*
* Copyright (c) 2014 Ruslan Bukin <br@bsdpad.com>
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
*
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
* SUCH DAMAGE.
*/
/*
* Vybrid Family Display Control Unit (DCU4)
* Chapter 55, Vybrid Reference Manual, Rev. 5, 07/2013
*/
#include <sys/cdefs.h>
__FBSDID("$FreeBSD$");
#include <sys/param.h>
#include <sys/systm.h>
#include <sys/bus.h>
#include <sys/kernel.h>
#include <sys/module.h>
#include <sys/malloc.h>
#include <sys/rman.h>
#include <sys/timeet.h>
#include <sys/timetc.h>
#include <sys/watchdog.h>
#include <sys/fbio.h>
#include <sys/consio.h>
#include <sys/eventhandler.h>
#include <sys/gpio.h>
#include <vm/vm.h>
#include <vm/pmap.h>
#include <dev/ofw/openfirm.h>
#include <dev/ofw/ofw_bus.h>
#include <dev/ofw/ofw_bus_subr.h>
#include <dev/vt/vt.h>
#include <dev/vt/colors/vt_termcolors.h>
#include "gpio_if.h"
#include <machine/bus.h>
#include <machine/fdt.h>
#include <machine/cpu.h>
#include <machine/intr.h>
#include "fb_if.h"
#include <arm/freescale/vybrid/vf_common.h>
#define DCU_CTRLDESCCURSOR1 0x000 /* Control Descriptor Cursor 1 */
#define DCU_CTRLDESCCURSOR2 0x004 /* Control Descriptor Cursor 2 */
#define DCU_CTRLDESCCURSOR3 0x008 /* Control Descriptor Cursor 3 */
#define DCU_CTRLDESCCURSOR4 0x00C /* Control Descriptor Cursor 4 */
#define DCU_DCU_MODE 0x010 /* DCU4 Mode */
#define DCU_MODE_M 0x3
#define DCU_MODE_S 0
#define DCU_MODE_NORMAL 0x1
#define DCU_MODE_TEST 0x2
#define DCU_MODE_COLBAR 0x3
#define RASTER_EN (1 << 14) /* Raster scan of pixel data */
#define PDI_EN (1 << 13)
#define PDI_DE_MODE (1 << 11)
#define PDI_MODE_M 2
#define DCU_BGND 0x014 /* Background */
#define DCU_DISP_SIZE 0x018 /* Display Size */
#define DELTA_M 0x7ff
#define DELTA_Y_S 16
#define DELTA_X_S 0
#define DCU_HSYN_PARA 0x01C /* Horizontal Sync Parameter */
#define BP_H_SHIFT 22
#define PW_H_SHIFT 11
#define FP_H_SHIFT 0
#define DCU_VSYN_PARA 0x020 /* Vertical Sync Parameter */
#define BP_V_SHIFT 22
#define PW_V_SHIFT 11
#define FP_V_SHIFT 0
#define DCU_SYNPOL 0x024 /* Synchronize Polarity */
#define INV_HS (1 << 0)
#define INV_VS (1 << 1)
#define INV_PDI_VS (1 << 8) /* Polarity of PDI input VSYNC. */
#define INV_PDI_HS (1 << 9) /* Polarity of PDI input HSYNC. */
#define INV_PDI_DE (1 << 10) /* Polarity of PDI input DE. */
#define DCU_THRESHOLD 0x028 /* Threshold */
#define LS_BF_VS_SHIFT 16
#define OUT_BUF_HIGH_SHIFT 8
#define OUT_BUF_LOW_SHIFT 0
#define DCU_INT_STATUS 0x02C /* Interrupt Status */
#define DCU_INT_MASK 0x030 /* Interrupt Mask */
#define DCU_COLBAR_1 0x034 /* COLBAR_1 */
#define DCU_COLBAR_2 0x038 /* COLBAR_2 */
#define DCU_COLBAR_3 0x03C /* COLBAR_3 */
#define DCU_COLBAR_4 0x040 /* COLBAR_4 */
#define DCU_COLBAR_5 0x044 /* COLBAR_5 */
#define DCU_COLBAR_6 0x048 /* COLBAR_6 */
#define DCU_COLBAR_7 0x04C /* COLBAR_7 */
#define DCU_COLBAR_8 0x050 /* COLBAR_8 */
#define DCU_DIV_RATIO 0x054 /* Divide Ratio */
#define DCU_SIGN_CALC_1 0x058 /* Sign Calculation 1 */
#define DCU_SIGN_CALC_2 0x05C /* Sign Calculation 2 */
#define DCU_CRC_VAL 0x060 /* CRC Value */
#define DCU_PDI_STATUS 0x064 /* PDI Status */
#define DCU_PDI_STA_MSK 0x068 /* PDI Status Mask */
#define DCU_PARR_ERR_STATUS1 0x06C /* Parameter Error Status 1 */
#define DCU_PARR_ERR_STATUS2 0x070 /* Parameter Error Status 2 */
#define DCU_PARR_ERR_STATUS3 0x07C /* Parameter Error Status 3 */
#define DCU_MASK_PARR_ERR_ST1 0x080 /* Mask Parameter Error Status 1 */
#define DCU_MASK_PARR_ERR_ST2 0x084 /* Mask Parameter Error Status 2 */
#define DCU_MASK_PARR_ERR_ST3 0x090 /* Mask Parameter Error Status 3 */
#define DCU_THRESHOLD_INP_BUF_1 0x094 /* Threshold Input 1 */
#define DCU_THRESHOLD_INP_BUF_2 0x098 /* Threshold Input 2 */
#define DCU_THRESHOLD_INP_BUF_3 0x09C /* Threshold Input 3 */
#define DCU_LUMA_COMP 0x0A0 /* LUMA Component */
#define DCU_CHROMA_RED 0x0A4 /* Red Chroma Components */
#define DCU_CHROMA_GREEN 0x0A8 /* Green Chroma Components */
#define DCU_CHROMA_BLUE 0x0AC /* Blue Chroma Components */
#define DCU_CRC_POS 0x0B0 /* CRC Position */
#define DCU_LYR_INTPOL_EN 0x0B4 /* Layer Interpolation Enable */
#define DCU_LYR_LUMA_COMP 0x0B8 /* Layer Luminance Component */
#define DCU_LYR_CHRM_RED 0x0BC /* Layer Chroma Red */
#define DCU_LYR_CHRM_GRN 0x0C0 /* Layer Chroma Green */
#define DCU_LYR_CHRM_BLUE 0x0C4 /* Layer Chroma Blue */
#define DCU_COMP_IMSIZE 0x0C8 /* Compression Image Size */
#define DCU_UPDATE_MODE 0x0CC /* Update Mode */
#define READREG (1 << 30)
#define MODE (1 << 31)
#define DCU_UNDERRUN 0x0D0 /* Underrun */
#define DCU_GLBL_PROTECT 0x100 /* Global Protection */
#define DCU_SFT_LCK_BIT_L0 0x104 /* Soft Lock Bit Layer 0 */
#define DCU_SFT_LCK_BIT_L1 0x108 /* Soft Lock Bit Layer 1 */
#define DCU_SFT_LCK_DISP_SIZE 0x10C /* Soft Lock Display Size */
#define DCU_SFT_LCK_HS_VS_PARA 0x110 /* Soft Lock Hsync/Vsync Parameter */
#define DCU_SFT_LCK_POL 0x114 /* Soft Lock POL */
#define DCU_SFT_LCK_L0_TRANSP 0x118 /* Soft Lock L0 Transparency */
#define DCU_SFT_LCK_L1_TRANSP 0x11C /* Soft Lock L1 Transparency */
/* Control Descriptor */
#define DCU_CTRLDESCL(n, m) 0x200 + (0x40 * n) + 0x4 * (m - 1)
#define DCU_CTRLDESCLn_1(n) DCU_CTRLDESCL(n, 1)
#define DCU_CTRLDESCLn_2(n) DCU_CTRLDESCL(n, 2)
#define DCU_CTRLDESCLn_3(n) DCU_CTRLDESCL(n, 3)
#define TRANS_SHIFT 20
#define DCU_CTRLDESCLn_4(n) DCU_CTRLDESCL(n, 4)
#define BPP_MASK 0xf /* Bit per pixel Mask */
#define BPP_SHIFT 16 /* Bit per pixel Shift */
#define BPP24 0x5
#define EN_LAYER (1 << 31) /* Enable the layer */
#define DCU_CTRLDESCLn_5(n) DCU_CTRLDESCL(n, 5)
#define DCU_CTRLDESCLn_6(n) DCU_CTRLDESCL(n, 6)
#define DCU_CTRLDESCLn_7(n) DCU_CTRLDESCL(n, 7)
#define DCU_CTRLDESCLn_8(n) DCU_CTRLDESCL(n, 8)
#define DCU_CTRLDESCLn_9(n) DCU_CTRLDESCL(n, 9)
#define NUM_LAYERS 64
struct panel_info {
uint32_t width;
uint32_t height;
uint32_t h_back_porch;
uint32_t h_pulse_width;
uint32_t h_front_porch;
uint32_t v_back_porch;
uint32_t v_pulse_width;
uint32_t v_front_porch;
uint32_t clk_div;
uint32_t backlight_pin;
};
struct dcu_softc {
struct resource *res[2];
bus_space_tag_t bst;
bus_space_handle_t bsh;
void *ih;
device_t dev;
device_t sc_fbd; /* fbd child */
struct fb_info sc_info;
struct panel_info *panel;
};
static struct resource_spec dcu_spec[] = {
{ SYS_RES_MEMORY, 0, RF_ACTIVE },
{ SYS_RES_IRQ, 0, RF_ACTIVE },
{ -1, 0 }
};
static int
dcu_probe(device_t dev)
{
if (!ofw_bus_status_okay(dev))
return (ENXIO);
if (!ofw_bus_is_compatible(dev, "fsl,mvf600-dcu4"))
return (ENXIO);
device_set_desc(dev, "Vybrid Family Display Control Unit (DCU4)");
return (BUS_PROBE_DEFAULT);
}
static void
dcu_intr(void *arg)
{
struct dcu_softc *sc;
int reg;
sc = arg;
/* Ack interrupts */
reg = READ4(sc, DCU_INT_STATUS);
WRITE4(sc, DCU_INT_STATUS, reg);
/* TODO interrupt handler */
}
static int
get_panel_info(struct dcu_softc *sc, struct panel_info *panel)
{
phandle_t node;
pcell_t dts_value[3];
int len;
if ((node = ofw_bus_get_node(sc->dev)) == -1)
return (ENXIO);
/* panel size */
if ((len = OF_getproplen(node, "panel-size")) <= 0)
return (ENXIO);
OF_getencprop(node, "panel-size", dts_value, len);
panel->width = dts_value[0];
panel->height = dts_value[1];
/* hsync */
if ((len = OF_getproplen(node, "panel-hsync")) <= 0)
return (ENXIO);
OF_getencprop(node, "panel-hsync", dts_value, len);
panel->h_back_porch = dts_value[0];
panel->h_pulse_width = dts_value[1];
panel->h_front_porch = dts_value[2];
/* vsync */
if ((len = OF_getproplen(node, "panel-vsync")) <= 0)
return (ENXIO);
OF_getencprop(node, "panel-vsync", dts_value, len);
panel->v_back_porch = dts_value[0];
panel->v_pulse_width = dts_value[1];
panel->v_front_porch = dts_value[2];
/* clk divider */
if ((len = OF_getproplen(node, "panel-clk-div")) <= 0)
return (ENXIO);
OF_getencprop(node, "panel-clk-div", dts_value, len);
panel->clk_div = dts_value[0];
/* backlight pin */
if ((len = OF_getproplen(node, "panel-backlight-pin")) <= 0)
return (ENXIO);
OF_getencprop(node, "panel-backlight-pin", dts_value, len);
panel->backlight_pin = dts_value[0];
return (0);
}
static int
dcu_init(struct dcu_softc *sc)
{
struct panel_info *panel;
int reg;
int i;
panel = sc->panel;
/* Configure DCU */
reg = ((sc->sc_info.fb_height) << DELTA_Y_S);
reg |= (sc->sc_info.fb_width / 16);
WRITE4(sc, DCU_DISP_SIZE, reg);
reg = (panel->h_back_porch << BP_H_SHIFT);
reg |= (panel->h_pulse_width << PW_H_SHIFT);
reg |= (panel->h_front_porch << FP_H_SHIFT);
WRITE4(sc, DCU_HSYN_PARA, reg);
reg = (panel->v_back_porch << BP_V_SHIFT);
reg |= (panel->v_pulse_width << PW_V_SHIFT);
reg |= (panel->v_front_porch << FP_V_SHIFT);
WRITE4(sc, DCU_VSYN_PARA, reg);
WRITE4(sc, DCU_BGND, 0);
WRITE4(sc, DCU_DIV_RATIO, panel->clk_div);
reg = (INV_VS | INV_HS);
WRITE4(sc, DCU_SYNPOL, reg);
/* TODO: export to panel info */
reg = (0x3 << LS_BF_VS_SHIFT);
reg |= (0x78 << OUT_BUF_HIGH_SHIFT);
reg |= (0 << OUT_BUF_LOW_SHIFT);
WRITE4(sc, DCU_THRESHOLD, reg);
/* Mask all the interrupts */
WRITE4(sc, DCU_INT_MASK, 0xffffffff);
/* Reset all layers */
for (i = 0; i < NUM_LAYERS; i++) {
WRITE4(sc, DCU_CTRLDESCLn_1(i), 0x0);
WRITE4(sc, DCU_CTRLDESCLn_2(i), 0x0);
WRITE4(sc, DCU_CTRLDESCLn_3(i), 0x0);
WRITE4(sc, DCU_CTRLDESCLn_4(i), 0x0);
WRITE4(sc, DCU_CTRLDESCLn_5(i), 0x0);
WRITE4(sc, DCU_CTRLDESCLn_6(i), 0x0);
WRITE4(sc, DCU_CTRLDESCLn_7(i), 0x0);
WRITE4(sc, DCU_CTRLDESCLn_8(i), 0x0);
WRITE4(sc, DCU_CTRLDESCLn_9(i), 0x0);
}
/* Setup first layer */
reg = (sc->sc_info.fb_width | (sc->sc_info.fb_height << 16));
WRITE4(sc, DCU_CTRLDESCLn_1(0), reg);
WRITE4(sc, DCU_CTRLDESCLn_2(0), 0x0);
WRITE4(sc, DCU_CTRLDESCLn_3(0), sc->sc_info.fb_pbase);
reg = (BPP24 << BPP_SHIFT);
reg |= EN_LAYER;
reg |= (0xFF << TRANS_SHIFT); /* completely opaque */
WRITE4(sc, DCU_CTRLDESCLn_4(0), reg);
WRITE4(sc, DCU_CTRLDESCLn_5(0), 0xffffff);
WRITE4(sc, DCU_CTRLDESCLn_6(0), 0x0);
WRITE4(sc, DCU_CTRLDESCLn_7(0), 0x0);
WRITE4(sc, DCU_CTRLDESCLn_8(0), 0x0);
WRITE4(sc, DCU_CTRLDESCLn_9(0), 0x0);
/* Enable DCU in normal mode */
reg = READ4(sc, DCU_DCU_MODE);
reg &= ~(DCU_MODE_M << DCU_MODE_S);
reg |= (DCU_MODE_NORMAL << DCU_MODE_S);
reg |= (RASTER_EN);
WRITE4(sc, DCU_DCU_MODE, reg);
WRITE4(sc, DCU_UPDATE_MODE, READREG);
return (0);
}
static int
dcu_attach(device_t dev)
{
struct panel_info panel;
struct dcu_softc *sc;
device_t gpio_dev;
int err;
sc = device_get_softc(dev);
sc->dev = dev;
if (bus_alloc_resources(dev, dcu_spec, sc->res)) {
device_printf(dev, "could not allocate resources\n");
return (ENXIO);
}
/* Memory interface */
sc->bst = rman_get_bustag(sc->res[0]);
sc->bsh = rman_get_bushandle(sc->res[0]);
/* Setup interrupt handler */
err = bus_setup_intr(dev, sc->res[1], INTR_TYPE_BIO | INTR_MPSAFE,
NULL, dcu_intr, sc, &sc->ih);
if (err) {
device_printf(dev, "Unable to alloc interrupt resource.\n");
return (ENXIO);
}
if (get_panel_info(sc, &panel)) {
device_printf(dev, "Can't get panel info\n");
return (ENXIO);
}
sc->panel = &panel;
/* Bypass timing control (used for raw lcd panels) */
tcon_bypass();
/* Get the GPIO device, we need this to give power to USB */
gpio_dev = devclass_get_device(devclass_find("gpio"), 0);
if (gpio_dev == NULL) {
device_printf(sc->dev, "Error: failed to get the GPIO dev\n");
return (1);
}
/* Turn on backlight */
/* TODO: Use FlexTimer/PWM */
GPIO_PIN_SETFLAGS(gpio_dev, panel.backlight_pin, GPIO_PIN_OUTPUT);
GPIO_PIN_SET(gpio_dev, panel.backlight_pin, GPIO_PIN_HIGH);
sc->sc_info.fb_width = panel.width;
sc->sc_info.fb_height = panel.height;
sc->sc_info.fb_stride = sc->sc_info.fb_width * 3;
sc->sc_info.fb_bpp = sc->sc_info.fb_depth = 24;
sc->sc_info.fb_size = sc->sc_info.fb_height * sc->sc_info.fb_stride;
sc->sc_info.fb_vbase = (intptr_t)contigmalloc(sc->sc_info.fb_size,
M_DEVBUF, M_ZERO, 0, ~0, PAGE_SIZE, 0);
sc->sc_info.fb_pbase = (intptr_t)vtophys(sc->sc_info.fb_vbase);
#if 0
printf("%dx%d [%d]\n", sc->sc_info.fb_width, sc->sc_info.fb_height,
sc->sc_info.fb_stride);
printf("pbase == 0x%08x\n", sc->sc_info.fb_pbase);
#endif
memset((int8_t *)sc->sc_info.fb_vbase, 0x0, sc->sc_info.fb_size);
dcu_init(sc);
sc->sc_info.fb_name = device_get_nameunit(dev);
/* Ask newbus to attach framebuffer device to me. */
sc->sc_fbd = device_add_child(dev, "fbd", device_get_unit(dev));
if (sc->sc_fbd == NULL)
device_printf(dev, "Can't attach fbd device\n");
if (device_probe_and_attach(sc->sc_fbd) != 0) {
device_printf(sc->dev, "Failed to attach fbd device\n");
}
return (0);
}
static struct fb_info *
dcu4_fb_getinfo(device_t dev)
{
struct dcu_softc *sc = device_get_softc(dev);
return (&sc->sc_info);
}
static device_method_t dcu_methods[] = {
DEVMETHOD(device_probe, dcu_probe),
DEVMETHOD(device_attach, dcu_attach),
/* Framebuffer service methods */
DEVMETHOD(fb_getinfo, dcu4_fb_getinfo),
{ 0, 0 }
};
static driver_t dcu_driver = {
"fb",
dcu_methods,
sizeof(struct dcu_softc),
};
static devclass_t dcu_devclass;
DRIVER_MODULE(fb, simplebus, dcu_driver, dcu_devclass, 0, 0);
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