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arm: allwinner: Garbage collect a10_hdmi driver

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It was disconnected 5 years ago in 4573cd3914
("arm: allwinner: Disconnect A10/A20 HDMI driver") as it wasn't working.

Sponsored by:	Beckhoff Automation GmbH & Co. KG
Reviewed by:	andrew
Differential Revision:	https://reviews.freebsd.org/D39117
This commit is contained in:
Emmanuel Vadot
2023-03-15 13:00:20 +01:00
parent 1c4ff02a74
commit 37531e78df
3 changed files with 0 additions and 1818 deletions
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sys/arm/allwinner/a10_fb.c
-660
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@@ -1,660 +0,0 @@
/*-
* Copyright (c) 2016 Jared McNeill <jmcneill@invisible.ca>
*
* 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 ``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 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.
*
* $FreeBSD$
*/
/*
* Allwinner A10/A20 Framebuffer
*/
#include <sys/cdefs.h>
__FBSDID("$FreeBSD$");
#include <sys/param.h>
#include <sys/systm.h>
#include <sys/bus.h>
#include <sys/rman.h>
#include <sys/condvar.h>
#include <sys/eventhandler.h>
#include <sys/kernel.h>
#include <sys/module.h>
#include <sys/fbio.h>
#include <vm/vm.h>
#include <vm/vm_extern.h>
#include <vm/vm_kern.h>
#include <vm/pmap.h>
#include <machine/bus.h>
#include <dev/ofw/ofw_bus.h>
#include <dev/ofw/ofw_bus_subr.h>
#include <dev/videomode/videomode.h>
#include <dev/videomode/edidvar.h>
#include <dev/extres/clk/clk.h>
#include <dev/extres/hwreset/hwreset.h>
#include "fb_if.h"
#include "hdmi_if.h"
#define FB_DEFAULT_W 800
#define FB_DEFAULT_H 600
#define FB_DEFAULT_REF 60
#define FB_BPP 32
#define FB_ALIGN 0x1000
#define HDMI_ENABLE_DELAY 20000
#define DEBE_FREQ 300000000
#define DOT_CLOCK_TO_HZ(c) ((c) * 1000)
/* Display backend */
#define DEBE_REG_START 0x800
#define DEBE_REG_END 0x1000
#define DEBE_REG_WIDTH 4
#define DEBE_MODCTL 0x800
#define MODCTL_ITLMOD_EN (1 << 28)
#define MODCTL_OUT_SEL_MASK (0x7 << 20)
#define MODCTL_OUT_SEL(sel) ((sel) << 20)
#define OUT_SEL_LCD 0
#define MODCTL_LAY0_EN (1 << 8)
#define MODCTL_START_CTL (1 << 1)
#define MODCTL_EN (1 << 0)
#define DEBE_DISSIZE 0x808
#define DIS_HEIGHT(h) (((h) - 1) << 16)
#define DIS_WIDTH(w) (((w) - 1) << 0)
#define DEBE_LAYSIZE0 0x810
#define LAY_HEIGHT(h) (((h) - 1) << 16)
#define LAY_WIDTH(w) (((w) - 1) << 0)
#define DEBE_LAYCOOR0 0x820
#define LAY_XCOOR(x) ((x) << 16)
#define LAY_YCOOR(y) ((y) << 0)
#define DEBE_LAYLINEWIDTH0 0x840
#define DEBE_LAYFB_L32ADD0 0x850
#define LAYFB_L32ADD(pa) ((pa) << 3)
#define DEBE_LAYFB_H4ADD 0x860
#define LAY0FB_H4ADD(pa) ((pa) >> 29)
#define DEBE_REGBUFFCTL 0x870
#define REGBUFFCTL_LOAD (1 << 0)
#define DEBE_ATTCTL1 0x8a0
#define ATTCTL1_FBFMT(fmt) ((fmt) << 8)
#define FBFMT_XRGB8888 9
#define ATTCTL1_FBPS(ps) ((ps) << 0)
#define FBPS_32BPP_ARGB 0
/* Timing controller */
#define TCON_GCTL 0x000
#define GCTL_TCON_EN (1 << 31)
#define GCTL_IO_MAP_SEL_TCON1 (1 << 0)
#define TCON_GINT1 0x008
#define GINT1_TCON1_LINENO(n) (((n) + 2) << 0)
#define TCON0_DCLK 0x044
#define DCLK_EN 0xf0000000
#define TCON1_CTL 0x090
#define TCON1_EN (1 << 31)
#define INTERLACE_EN (1 << 20)
#define TCON1_SRC_SEL(src) ((src) << 0)
#define TCON1_SRC_CH1 0
#define TCON1_SRC_CH2 1
#define TCON1_SRC_BLUE 2
#define TCON1_START_DELAY(sd) ((sd) << 4)
#define TCON1_BASIC0 0x094
#define TCON1_BASIC1 0x098
#define TCON1_BASIC2 0x09c
#define TCON1_BASIC3 0x0a0
#define TCON1_BASIC4 0x0a4
#define TCON1_BASIC5 0x0a8
#define BASIC_X(x) (((x) - 1) << 16)
#define BASIC_Y(y) (((y) - 1) << 0)
#define BASIC3_HT(ht) (((ht) - 1) << 16)
#define BASIC3_HBP(hbp) (((hbp) - 1) << 0)
#define BASIC4_VT(vt) ((vt) << 16)
#define BASIC4_VBP(vbp) (((vbp) - 1) << 0)
#define BASIC5_HSPW(hspw) (((hspw) - 1) << 16)
#define BASIC5_VSPW(vspw) (((vspw) - 1) << 0)
#define TCON1_IO_POL 0x0f0
#define IO_POL_IO2_INV (1 << 26)
#define IO_POL_PHSYNC (1 << 25)
#define IO_POL_PVSYNC (1 << 24)
#define TCON1_IO_TRI 0x0f4
#define IO0_OUTPUT_TRI_EN (1 << 24)
#define IO1_OUTPUT_TRI_EN (1 << 25)
#define IO_TRI_MASK 0xffffffff
#define START_DELAY(vbl) (MIN(32, (vbl)) - 2)
#define VBLANK_LEN(vt, vd, i) ((((vt) << (i)) >> 1) - (vd) - 2)
#define VTOTAL(vt) ((vt) * 2)
#define DIVIDE(x, y) (((x) + ((y) / 2)) / (y))
struct a10fb_softc {
device_t dev;
device_t fbdev;
struct resource *res[2];
/* Framebuffer */
struct fb_info info;
size_t fbsize;
bus_addr_t paddr;
vm_offset_t vaddr;
/* HDMI */
eventhandler_tag hdmi_evh;
};
static struct resource_spec a10fb_spec[] = {
{ SYS_RES_MEMORY, 0, RF_ACTIVE }, /* DEBE */
{ SYS_RES_MEMORY, 1, RF_ACTIVE }, /* TCON */
{ -1, 0 }
};
#define DEBE_READ(sc, reg) bus_read_4((sc)->res[0], (reg))
#define DEBE_WRITE(sc, reg, val) bus_write_4((sc)->res[0], (reg), (val))
#define TCON_READ(sc, reg) bus_read_4((sc)->res[1], (reg))
#define TCON_WRITE(sc, reg, val) bus_write_4((sc)->res[1], (reg), (val))
static int
a10fb_allocfb(struct a10fb_softc *sc)
{
sc->vaddr = kmem_alloc_contig(sc->fbsize, M_NOWAIT | M_ZERO, 0, ~0,
FB_ALIGN, 0, VM_MEMATTR_WRITE_COMBINING);
if (sc->vaddr == 0) {
device_printf(sc->dev, "failed to allocate FB memory\n");
return (ENOMEM);
}
sc->paddr = pmap_kextract(sc->vaddr);
return (0);
}
static void
a10fb_freefb(struct a10fb_softc *sc)
{
kmem_free(sc->vaddr, sc->fbsize);
}
static int
a10fb_setup_debe(struct a10fb_softc *sc, const struct videomode *mode)
{
int width, height, interlace, reg;
clk_t clk_ahb, clk_dram, clk_debe;
hwreset_t rst;
uint32_t val;
int error;
interlace = !!(mode->flags & VID_INTERLACE);
width = mode->hdisplay;
height = mode->vdisplay << interlace;
/* Leave reset */
error = hwreset_get_by_ofw_name(sc->dev, 0, "de_be", &rst);
if (error != 0) {
device_printf(sc->dev, "cannot find reset 'de_be'\n");
return (error);
}
error = hwreset_deassert(rst);
if (error != 0) {
device_printf(sc->dev, "couldn't de-assert reset 'de_be'\n");
return (error);
}
/* Gating AHB clock for BE */
error = clk_get_by_ofw_name(sc->dev, 0, "ahb_de_be", &clk_ahb);
if (error != 0) {
device_printf(sc->dev, "cannot find clk 'ahb_de_be'\n");
return (error);
}
error = clk_enable(clk_ahb);
if (error != 0) {
device_printf(sc->dev, "cannot enable clk 'ahb_de_be'\n");
return (error);
}
/* Enable DRAM clock to BE */
error = clk_get_by_ofw_name(sc->dev, 0, "dram_de_be", &clk_dram);
if (error != 0) {
device_printf(sc->dev, "cannot find clk 'dram_de_be'\n");
return (error);
}
error = clk_enable(clk_dram);
if (error != 0) {
device_printf(sc->dev, "cannot enable clk 'dram_de_be'\n");
return (error);
}
/* Set BE clock to 300MHz and enable */
error = clk_get_by_ofw_name(sc->dev, 0, "de_be", &clk_debe);
if (error != 0) {
device_printf(sc->dev, "cannot find clk 'de_be'\n");
return (error);
}
error = clk_set_freq(clk_debe, DEBE_FREQ, CLK_SET_ROUND_DOWN);
if (error != 0) {
device_printf(sc->dev, "cannot set 'de_be' frequency\n");
return (error);
}
error = clk_enable(clk_debe);
if (error != 0) {
device_printf(sc->dev, "cannot enable clk 'de_be'\n");
return (error);
}
/* Initialize all registers to 0 */
for (reg = DEBE_REG_START; reg < DEBE_REG_END; reg += DEBE_REG_WIDTH)
DEBE_WRITE(sc, reg, 0);
/* Enable display backend */
DEBE_WRITE(sc, DEBE_MODCTL, MODCTL_EN);
/* Set display size */
DEBE_WRITE(sc, DEBE_DISSIZE, DIS_HEIGHT(height) | DIS_WIDTH(width));
/* Set layer 0 size, position, and stride */
DEBE_WRITE(sc, DEBE_LAYSIZE0, LAY_HEIGHT(height) | LAY_WIDTH(width));
DEBE_WRITE(sc, DEBE_LAYCOOR0, LAY_XCOOR(0) | LAY_YCOOR(0));
DEBE_WRITE(sc, DEBE_LAYLINEWIDTH0, width * FB_BPP);
/* Point layer 0 to FB memory */
DEBE_WRITE(sc, DEBE_LAYFB_L32ADD0, LAYFB_L32ADD(sc->paddr));
DEBE_WRITE(sc, DEBE_LAYFB_H4ADD, LAY0FB_H4ADD(sc->paddr));
/* Set backend format and pixel sequence */
DEBE_WRITE(sc, DEBE_ATTCTL1, ATTCTL1_FBFMT(FBFMT_XRGB8888) |
ATTCTL1_FBPS(FBPS_32BPP_ARGB));
/* Enable layer 0, output to LCD, setup interlace */
val = DEBE_READ(sc, DEBE_MODCTL);
val |= MODCTL_LAY0_EN;
val &= ~MODCTL_OUT_SEL_MASK;
val |= MODCTL_OUT_SEL(OUT_SEL_LCD);
if (interlace)
val |= MODCTL_ITLMOD_EN;
else
val &= ~MODCTL_ITLMOD_EN;
DEBE_WRITE(sc, DEBE_MODCTL, val);
/* Commit settings */
DEBE_WRITE(sc, DEBE_REGBUFFCTL, REGBUFFCTL_LOAD);
/* Start DEBE */
val = DEBE_READ(sc, DEBE_MODCTL);
val |= MODCTL_START_CTL;
DEBE_WRITE(sc, DEBE_MODCTL, val);
return (0);
}
static int
a10fb_setup_pll(struct a10fb_softc *sc, uint64_t freq)
{
clk_t clk_sclk1, clk_sclk2;
int error;
error = clk_get_by_ofw_name(sc->dev, 0, "lcd_ch1_sclk1", &clk_sclk1);
if (error != 0) {
device_printf(sc->dev, "cannot find clk 'lcd_ch1_sclk1'\n");
return (error);
}
error = clk_get_by_ofw_name(sc->dev, 0, "lcd_ch1_sclk2", &clk_sclk2);
if (error != 0) {
device_printf(sc->dev, "cannot find clk 'lcd_ch1_sclk2'\n");
return (error);
}
error = clk_set_freq(clk_sclk2, freq, 0);
if (error != 0) {
device_printf(sc->dev, "cannot set lcd ch1 frequency\n");
return (error);
}
error = clk_enable(clk_sclk2);
if (error != 0) {
device_printf(sc->dev, "cannot enable lcd ch1 sclk2\n");
return (error);
}
error = clk_enable(clk_sclk1);
if (error != 0) {
device_printf(sc->dev, "cannot enable lcd ch1 sclk1\n");
return (error);
}
return (0);
}
static int
a10fb_setup_tcon(struct a10fb_softc *sc, const struct videomode *mode)
{
u_int interlace, hspw, hbp, vspw, vbp, vbl, width, height, start_delay;
u_int vtotal, framerate, clk;
clk_t clk_ahb;
hwreset_t rst;
uint32_t val;
int error;
interlace = !!(mode->flags & VID_INTERLACE);
width = mode->hdisplay;
height = mode->vdisplay;
hspw = mode->hsync_end - mode->hsync_start;
hbp = mode->htotal - mode->hsync_start;
vspw = mode->vsync_end - mode->vsync_start;
vbp = mode->vtotal - mode->vsync_start;
vbl = VBLANK_LEN(mode->vtotal, mode->vdisplay, interlace);
start_delay = START_DELAY(vbl);
/* Leave reset */
error = hwreset_get_by_ofw_name(sc->dev, 0, "lcd", &rst);
if (error != 0) {
device_printf(sc->dev, "cannot find reset 'lcd'\n");
return (error);
}
error = hwreset_deassert(rst);
if (error != 0) {
device_printf(sc->dev, "couldn't de-assert reset 'lcd'\n");
return (error);
}
/* Gating AHB clock for LCD */
error = clk_get_by_ofw_name(sc->dev, 0, "ahb_lcd", &clk_ahb);
if (error != 0) {
device_printf(sc->dev, "cannot find clk 'ahb_lcd'\n");
return (error);
}
error = clk_enable(clk_ahb);
if (error != 0) {
device_printf(sc->dev, "cannot enable clk 'ahb_lcd'\n");
return (error);
}
/* Disable TCON and TCON1 */
TCON_WRITE(sc, TCON_GCTL, 0);
TCON_WRITE(sc, TCON1_CTL, 0);
/* Enable clocks */
TCON_WRITE(sc, TCON0_DCLK, DCLK_EN);
/* Disable IO and data output ports */
TCON_WRITE(sc, TCON1_IO_TRI, IO_TRI_MASK);
/* Disable TCON and select TCON1 */
TCON_WRITE(sc, TCON_GCTL, GCTL_IO_MAP_SEL_TCON1);
/* Source width and height */
TCON_WRITE(sc, TCON1_BASIC0, BASIC_X(width) | BASIC_Y(height));
/* Scaler width and height */
TCON_WRITE(sc, TCON1_BASIC1, BASIC_X(width) | BASIC_Y(height));
/* Output width and height */
TCON_WRITE(sc, TCON1_BASIC2, BASIC_X(width) | BASIC_Y(height));
/* Horizontal total and back porch */
TCON_WRITE(sc, TCON1_BASIC3, BASIC3_HT(mode->htotal) | BASIC3_HBP(hbp));
/* Vertical total and back porch */
vtotal = VTOTAL(mode->vtotal);
if (interlace) {
framerate = DIVIDE(DIVIDE(DOT_CLOCK_TO_HZ(mode->dot_clock),
mode->htotal), mode->vtotal);
clk = mode->htotal * (VTOTAL(mode->vtotal) + 1) * framerate;
if ((clk / 2) == DOT_CLOCK_TO_HZ(mode->dot_clock))
vtotal += 1;
}
TCON_WRITE(sc, TCON1_BASIC4, BASIC4_VT(vtotal) | BASIC4_VBP(vbp));
/* Horizontal and vertical sync */
TCON_WRITE(sc, TCON1_BASIC5, BASIC5_HSPW(hspw) | BASIC5_VSPW(vspw));
/* Polarity */
val = IO_POL_IO2_INV;
if (mode->flags & VID_PHSYNC)
val |= IO_POL_PHSYNC;
if (mode->flags & VID_PVSYNC)
val |= IO_POL_PVSYNC;
TCON_WRITE(sc, TCON1_IO_POL, val);
/* Set scan line for TCON1 line trigger */
TCON_WRITE(sc, TCON_GINT1, GINT1_TCON1_LINENO(start_delay));
/* Enable TCON1 */
val = TCON1_EN;
if (interlace)
val |= INTERLACE_EN;
val |= TCON1_START_DELAY(start_delay);
val |= TCON1_SRC_SEL(TCON1_SRC_CH1);
TCON_WRITE(sc, TCON1_CTL, val);
/* Setup PLL */
return (a10fb_setup_pll(sc, DOT_CLOCK_TO_HZ(mode->dot_clock)));
}
static void
a10fb_enable_tcon(struct a10fb_softc *sc, int onoff)
{
uint32_t val;
/* Enable TCON */
val = TCON_READ(sc, TCON_GCTL);
if (onoff)
val |= GCTL_TCON_EN;
else
val &= ~GCTL_TCON_EN;
TCON_WRITE(sc, TCON_GCTL, val);
/* Enable TCON1 IO0/IO1 outputs */
val = TCON_READ(sc, TCON1_IO_TRI);
if (onoff)
val &= ~(IO0_OUTPUT_TRI_EN | IO1_OUTPUT_TRI_EN);
else
val |= (IO0_OUTPUT_TRI_EN | IO1_OUTPUT_TRI_EN);
TCON_WRITE(sc, TCON1_IO_TRI, val);
}
static int
a10fb_configure(struct a10fb_softc *sc, const struct videomode *mode)
{
size_t fbsize;
int error;
fbsize = round_page(mode->hdisplay * mode->vdisplay * (FB_BPP / NBBY));
/* Detach the old FB device */
if (sc->fbdev != NULL) {
device_delete_child(sc->dev, sc->fbdev);
sc->fbdev = NULL;
}
/* If the FB size has changed, free the old FB memory */
if (sc->fbsize > 0 && sc->fbsize != fbsize) {
a10fb_freefb(sc);
sc->vaddr = 0;
}
/* Allocate the FB if necessary */
sc->fbsize = fbsize;
if (sc->vaddr == 0) {
error = a10fb_allocfb(sc);
if (error != 0) {
device_printf(sc->dev, "failed to allocate FB memory\n");
return (ENXIO);
}
}
/* Setup display backend */
error = a10fb_setup_debe(sc, mode);
if (error != 0)
return (error);
/* Setup display timing controller */
error = a10fb_setup_tcon(sc, mode);
if (error != 0)
return (error);
/* Attach framebuffer device */
sc->info.fb_name = device_get_nameunit(sc->dev);
sc->info.fb_vbase = (intptr_t)sc->vaddr;
sc->info.fb_pbase = sc->paddr;
sc->info.fb_size = sc->fbsize;
sc->info.fb_bpp = sc->info.fb_depth = FB_BPP;
sc->info.fb_stride = mode->hdisplay * (FB_BPP / NBBY);
sc->info.fb_width = mode->hdisplay;
sc->info.fb_height = mode->vdisplay;
sc->fbdev = device_add_child(sc->dev, "fbd", device_get_unit(sc->dev));
if (sc->fbdev == NULL) {
device_printf(sc->dev, "failed to add fbd child\n");
return (ENOENT);
}
error = device_probe_and_attach(sc->fbdev);
if (error != 0) {
device_printf(sc->dev, "failed to attach fbd device\n");
return (error);
}
return (0);
}
static void
a10fb_hdmi_event(void *arg, device_t hdmi_dev)
{
const struct videomode *mode;
struct videomode hdmi_mode;
struct a10fb_softc *sc;
struct edid_info ei;
uint8_t *edid;
uint32_t edid_len;
int error;
sc = arg;
edid = NULL;
edid_len = 0;
mode = NULL;
error = HDMI_GET_EDID(hdmi_dev, &edid, &edid_len);
if (error != 0) {
device_printf(sc->dev, "failed to get EDID: %d\n", error);
} else {
error = edid_parse(edid, &ei);
if (error != 0) {
device_printf(sc->dev, "failed to parse EDID: %d\n",
error);
} else {
if (bootverbose)
edid_print(&ei);
mode = ei.edid_preferred_mode;
}
}
/* If the preferred mode could not be determined, use the default */
if (mode == NULL)
mode = pick_mode_by_ref(FB_DEFAULT_W, FB_DEFAULT_H,
FB_DEFAULT_REF);
if (mode == NULL) {
device_printf(sc->dev, "failed to find usable video mode\n");
return;
}
if (bootverbose)
device_printf(sc->dev, "using %dx%d\n",
mode->hdisplay, mode->vdisplay);
/* Disable HDMI */
HDMI_ENABLE(hdmi_dev, 0);
/* Disable timing controller */
a10fb_enable_tcon(sc, 0);
/* Configure DEBE and TCON */
error = a10fb_configure(sc, mode);
if (error != 0) {
device_printf(sc->dev, "failed to configure FB: %d\n", error);
return;
}
hdmi_mode = *mode;
hdmi_mode.hskew = mode->hsync_end - mode->hsync_start;
hdmi_mode.flags |= VID_HSKEW;
HDMI_SET_VIDEOMODE(hdmi_dev, &hdmi_mode);
/* Enable timing controller */
a10fb_enable_tcon(sc, 1);
DELAY(HDMI_ENABLE_DELAY);
/* Enable HDMI */
HDMI_ENABLE(hdmi_dev, 1);
}
static int
a10fb_probe(device_t dev)
{
if (!ofw_bus_status_okay(dev))
return (ENXIO);
if (!ofw_bus_is_compatible(dev, "allwinner,sun7i-a20-fb"))
return (ENXIO);
device_set_desc(dev, "Allwinner Framebuffer");
return (BUS_PROBE_DEFAULT);
}
static int
a10fb_attach(device_t dev)
{
struct a10fb_softc *sc;
sc = device_get_softc(dev);
sc->dev = dev;
if (bus_alloc_resources(dev, a10fb_spec, sc->res)) {
device_printf(dev, "cannot allocate resources for device\n");
return (ENXIO);
}
sc->hdmi_evh = EVENTHANDLER_REGISTER(hdmi_event,
a10fb_hdmi_event, sc, 0);
return (0);
}
static struct fb_info *
a10fb_fb_getinfo(device_t dev)
{
struct a10fb_softc *sc;
sc = device_get_softc(dev);
return (&sc->info);
}
static device_method_t a10fb_methods[] = {
/* Device interface */
DEVMETHOD(device_probe, a10fb_probe),
DEVMETHOD(device_attach, a10fb_attach),
/* FB interface */
DEVMETHOD(fb_getinfo, a10fb_fb_getinfo),
DEVMETHOD_END
};
static driver_t a10fb_driver = {
"fb",
a10fb_methods,
sizeof(struct a10fb_softc),
};
DRIVER_MODULE(fb, simplebus, a10fb_driver, 0, 0);
sys/arm/allwinner/a10_hdmi.c
-723
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@@ -1,723 +0,0 @@
/*-
* Copyright (c) 2016 Jared McNeill <jmcneill@invisible.ca>
*
* 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 ``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 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.
*
* $FreeBSD$
*/
/*
* Allwinner A10/A20 HDMI TX
*/
#include <sys/cdefs.h>
__FBSDID("$FreeBSD$");
#include <sys/param.h>
#include <sys/systm.h>
#include <sys/bus.h>
#include <sys/rman.h>
#include <sys/condvar.h>
#include <sys/eventhandler.h>
#include <sys/kernel.h>
#include <sys/module.h>
#include <machine/bus.h>
#include <dev/ofw/ofw_bus.h>
#include <dev/ofw/ofw_bus_subr.h>
#include <dev/videomode/videomode.h>
#include <dev/videomode/edidvar.h>
#include <dev/extres/clk/clk.h>
#include "hdmi_if.h"
#define HDMI_CTRL 0x004
#define CTRL_MODULE_EN (1 << 31)
#define HDMI_INT_STATUS 0x008
#define HDMI_HPD 0x00c
#define HPD_DET (1 << 0)
#define HDMI_VID_CTRL 0x010
#define VID_CTRL_VIDEO_EN (1 << 31)
#define VID_CTRL_HDMI_MODE (1 << 30)
#define VID_CTRL_INTERLACE (1 << 4)
#define VID_CTRL_REPEATER_2X (1 << 0)
#define HDMI_VID_TIMING0 0x014
#define VID_ACT_V(v) (((v) - 1) << 16)
#define VID_ACT_H(h) (((h) - 1) << 0)
#define HDMI_VID_TIMING1 0x018
#define VID_VBP(vbp) (((vbp) - 1) << 16)
#define VID_HBP(hbp) (((hbp) - 1) << 0)
#define HDMI_VID_TIMING2 0x01c
#define VID_VFP(vfp) (((vfp) - 1) << 16)
#define VID_HFP(hfp) (((hfp) - 1) << 0)
#define HDMI_VID_TIMING3 0x020
#define VID_VSPW(vspw) (((vspw) - 1) << 16)
#define VID_HSPW(hspw) (((hspw) - 1) << 0)
#define HDMI_VID_TIMING4 0x024
#define TX_CLOCK_NORMAL 0x03e00000
#define VID_VSYNC_ACTSEL (1 << 1)
#define VID_HSYNC_ACTSEL (1 << 0)
#define HDMI_AUD_CTRL 0x040
#define AUD_CTRL_EN (1 << 31)
#define AUD_CTRL_RST (1 << 30)
#define HDMI_ADMA_CTRL 0x044
#define HDMI_ADMA_MODE (1 << 31)
#define HDMI_ADMA_MODE_DDMA (0 << 31)
#define HDMI_ADMA_MODE_NDMA (1 << 31)
#define HDMI_AUD_FMT 0x048
#define AUD_FMT_CH(n) ((n) - 1)
#define HDMI_PCM_CTRL 0x04c
#define HDMI_AUD_CTS 0x050
#define HDMI_AUD_N 0x054
#define HDMI_AUD_CH_STATUS0 0x058
#define CH_STATUS0_FS_FREQ (0xf << 24)
#define CH_STATUS0_FS_FREQ_48 (2 << 24)
#define HDMI_AUD_CH_STATUS1 0x05c
#define CH_STATUS1_WORD_LEN (0x7 << 1)
#define CH_STATUS1_WORD_LEN_16 (1 << 1)
#define HDMI_AUDIO_RESET_RETRY 1000
#define HDMI_AUDIO_CHANNELS 2
#define HDMI_AUDIO_CHANNELMAP 0x76543210
#define HDMI_AUDIO_N 6144 /* 48 kHz */
#define HDMI_AUDIO_CTS(r, n) ((((r) * 10) * ((n) / 128)) / 480)
#define HDMI_PADCTRL0 0x200
#define PADCTRL0_BIASEN (1 << 31)
#define PADCTRL0_LDOCEN (1 << 30)
#define PADCTRL0_LDODEN (1 << 29)
#define PADCTRL0_PWENC (1 << 28)
#define PADCTRL0_PWEND (1 << 27)
#define PADCTRL0_PWENG (1 << 26)
#define PADCTRL0_CKEN (1 << 25)
#define PADCTRL0_SEN (1 << 24)
#define PADCTRL0_TXEN (1 << 23)
#define HDMI_PADCTRL1 0x204
#define PADCTRL1_AMP_OPT (1 << 23)
#define PADCTRL1_AMPCK_OPT (1 << 22)
#define PADCTRL1_DMP_OPT (1 << 21)
#define PADCTRL1_EMP_OPT (1 << 20)
#define PADCTRL1_EMPCK_OPT (1 << 19)
#define PADCTRL1_PWSCK (1 << 18)
#define PADCTRL1_PWSDT (1 << 17)
#define PADCTRL1_REG_CSMPS (1 << 16)
#define PADCTRL1_REG_DEN (1 << 15)
#define PADCTRL1_REG_DENCK (1 << 14)
#define PADCTRL1_REG_PLRCK (1 << 13)
#define PADCTRL1_REG_EMP (0x7 << 10)
#define PADCTRL1_REG_EMP_EN (0x2 << 10)
#define PADCTRL1_REG_CD (0x3 << 8)
#define PADCTRL1_REG_CKSS (0x3 << 6)
#define PADCTRL1_REG_CKSS_1X (0x1 << 6)
#define PADCTRL1_REG_CKSS_2X (0x0 << 6)
#define PADCTRL1_REG_AMP (0x7 << 3)
#define PADCTRL1_REG_AMP_EN (0x6 << 3)
#define PADCTRL1_REG_PLR (0x7 << 0)
#define HDMI_PLLCTRL0 0x208
#define PLLCTRL0_PLL_EN (1 << 31)
#define PLLCTRL0_BWS (1 << 30)
#define PLLCTRL0_HV_IS_33 (1 << 29)
#define PLLCTRL0_LDO1_EN (1 << 28)
#define PLLCTRL0_LDO2_EN (1 << 27)
#define PLLCTRL0_SDIV2 (1 << 25)
#define PLLCTRL0_VCO_GAIN (0x1 << 22)
#define PLLCTRL0_S (0x7 << 17)
#define PLLCTRL0_CP_S (0xf << 12)
#define PLLCTRL0_CS (0x7 << 8)
#define PLLCTRL0_PREDIV(x) ((x) << 4)
#define PLLCTRL0_VCO_S (0x8 << 0)
#define HDMI_PLLDBG0 0x20c
#define PLLDBG0_CKIN_SEL (1 << 21)
#define PLLDBG0_CKIN_SEL_PLL3 (0 << 21)
#define PLLDBG0_CKIN_SEL_PLL7 (1 << 21)
#define HDMI_PKTCTRL0 0x2f0
#define HDMI_PKTCTRL1 0x2f4
#define PKTCTRL_PACKET(n,t) ((t) << ((n) << 2))
#define PKT_NULL 0
#define PKT_GC 1
#define PKT_AVI 2
#define PKT_AI 3
#define PKT_SPD 5
#define PKT_END 15
#define DDC_CTRL 0x500
#define CTRL_DDC_EN (1 << 31)
#define CTRL_DDC_ACMD_START (1 << 30)
#define CTRL_DDC_FIFO_DIR (1 << 8)
#define CTRL_DDC_FIFO_DIR_READ (0 << 8)
#define CTRL_DDC_FIFO_DIR_WRITE (1 << 8)
#define CTRL_DDC_SWRST (1 << 0)
#define DDC_SLAVE_ADDR 0x504
#define SLAVE_ADDR_SEG_SHIFT 24
#define SLAVE_ADDR_EDDC_SHIFT 16
#define SLAVE_ADDR_OFFSET_SHIFT 8
#define SLAVE_ADDR_SHIFT 0
#define DDC_INT_STATUS 0x50c
#define INT_STATUS_XFER_DONE (1 << 0)
#define DDC_FIFO_CTRL 0x510
#define FIFO_CTRL_CLEAR (1 << 31)
#define DDC_BYTE_COUNTER 0x51c
#define DDC_COMMAND 0x520
#define COMMAND_EOREAD (4 << 0)
#define DDC_CLOCK 0x528
#define DDC_CLOCK_M (1 << 3)
#define DDC_CLOCK_N (5 << 0)
#define DDC_FIFO 0x518
#define SWRST_DELAY 1000
#define DDC_DELAY 1000
#define DDC_RETRY 1000
#define DDC_BLKLEN 16
#define DDC_ADDR 0x50
#define EDDC_ADDR 0x60
#define EDID_LENGTH 128
#define DDC_CTRL_LINE 0x540
#define DDC_LINE_SCL_ENABLE (1 << 8)
#define DDC_LINE_SDA_ENABLE (1 << 9)
#define HDMI_ENABLE_DELAY 50000
#define DDC_READ_RETRY 4
#define EXT_TAG 0x00
#define CEA_TAG_ID 0x02
#define CEA_DTD 0x03
#define DTD_BASIC_AUDIO (1 << 6)
#define CEA_REV 0x02
#define CEA_DATA_OFF 0x03
#define CEA_DATA_START 4
#define BLOCK_TAG(x) (((x) >> 5) & 0x7)
#define BLOCK_TAG_VSDB 3
#define BLOCK_LEN(x) ((x) & 0x1f)
#define HDMI_VSDB_MINLEN 5
#define HDMI_OUI "\x03\x0c\x00"
#define HDMI_OUI_LEN 3
#define HDMI_DEFAULT_FREQ 297000000
struct a10hdmi_softc {
struct resource *res;
struct intr_config_hook mode_hook;
uint8_t edid[EDID_LENGTH];
int has_hdmi;
int has_audio;
clk_t clk_ahb;
clk_t clk_hdmi;
clk_t clk_lcd;
};
static struct resource_spec a10hdmi_spec[] = {
{ SYS_RES_MEMORY, 0, RF_ACTIVE },
{ -1, 0 }
};
#define HDMI_READ(sc, reg) bus_read_4((sc)->res, (reg))
#define HDMI_WRITE(sc, reg, val) bus_write_4((sc)->res, (reg), (val))
static void
a10hdmi_init(struct a10hdmi_softc *sc)
{
/* Enable the HDMI module */
HDMI_WRITE(sc, HDMI_CTRL, CTRL_MODULE_EN);
/* Configure PLL/DRV settings */
HDMI_WRITE(sc, HDMI_PADCTRL0, PADCTRL0_BIASEN | PADCTRL0_LDOCEN |
PADCTRL0_LDODEN | PADCTRL0_PWENC | PADCTRL0_PWEND |
PADCTRL0_PWENG | PADCTRL0_CKEN | PADCTRL0_TXEN);
HDMI_WRITE(sc, HDMI_PADCTRL1, PADCTRL1_AMP_OPT | PADCTRL1_AMPCK_OPT |
PADCTRL1_EMP_OPT | PADCTRL1_EMPCK_OPT | PADCTRL1_REG_DEN |
PADCTRL1_REG_DENCK | PADCTRL1_REG_EMP_EN | PADCTRL1_REG_AMP_EN);
/* Select PLL3 as input clock */
HDMI_WRITE(sc, HDMI_PLLDBG0, PLLDBG0_CKIN_SEL_PLL3);
DELAY(HDMI_ENABLE_DELAY);
}
static void
a10hdmi_hpd(void *arg)
{
struct a10hdmi_softc *sc;
device_t dev;
uint32_t hpd;
dev = arg;
sc = device_get_softc(dev);
hpd = HDMI_READ(sc, HDMI_HPD);
if ((hpd & HPD_DET) == HPD_DET)
EVENTHANDLER_INVOKE(hdmi_event, dev, HDMI_EVENT_CONNECTED);
config_intrhook_disestablish(&sc->mode_hook);
}
static int
a10hdmi_probe(device_t dev)
{
if (!ofw_bus_status_okay(dev))
return (ENXIO);
if (!ofw_bus_is_compatible(dev, "allwinner,sun7i-a20-hdmi"))
return (ENXIO);
device_set_desc(dev, "Allwinner HDMI TX");
return (BUS_PROBE_DEFAULT);
}
static int
a10hdmi_attach(device_t dev)
{
struct a10hdmi_softc *sc;
int error;
sc = device_get_softc(dev);
if (bus_alloc_resources(dev, a10hdmi_spec, &sc->res)) {
device_printf(dev, "cannot allocate resources for device\n");
return (ENXIO);
}
/* Setup clocks */
error = clk_get_by_ofw_name(dev, 0, "ahb", &sc->clk_ahb);
if (error != 0) {
device_printf(dev, "cannot find ahb clock\n");
return (error);
}
error = clk_get_by_ofw_name(dev, 0, "hdmi", &sc->clk_hdmi);
if (error != 0) {
device_printf(dev, "cannot find hdmi clock\n");
return (error);
}
error = clk_get_by_ofw_name(dev, 0, "lcd", &sc->clk_lcd);
if (error != 0) {
device_printf(dev, "cannot find lcd clock\n");
}
/* Enable HDMI clock */
error = clk_enable(sc->clk_hdmi);
if (error != 0) {
device_printf(dev, "cannot enable hdmi clock\n");
return (error);
}
/* Gating AHB clock for HDMI */
error = clk_enable(sc->clk_ahb);
if (error != 0) {
device_printf(dev, "cannot enable ahb gate\n");
return (error);
}
a10hdmi_init(sc);
sc->mode_hook.ich_func = a10hdmi_hpd;
sc->mode_hook.ich_arg = dev;
error = config_intrhook_establish(&sc->mode_hook);
if (error != 0)
return (error);
return (0);
}
static int
a10hdmi_ddc_xfer(struct a10hdmi_softc *sc, uint16_t addr, uint8_t seg,
uint8_t off, int len)
{
uint32_t val;
int retry;
/* Set FIFO direction to read */
val = HDMI_READ(sc, DDC_CTRL);
val &= ~CTRL_DDC_FIFO_DIR;
val |= CTRL_DDC_FIFO_DIR_READ;
HDMI_WRITE(sc, DDC_CTRL, val);
/* Setup DDC slave address */
val = (addr << SLAVE_ADDR_SHIFT) | (seg << SLAVE_ADDR_SEG_SHIFT) |
(EDDC_ADDR << SLAVE_ADDR_EDDC_SHIFT) |
(off << SLAVE_ADDR_OFFSET_SHIFT);
HDMI_WRITE(sc, DDC_SLAVE_ADDR, val);
/* Clear FIFO */
val = HDMI_READ(sc, DDC_FIFO_CTRL);
val |= FIFO_CTRL_CLEAR;
HDMI_WRITE(sc, DDC_FIFO_CTRL, val);
/* Set transfer length */
HDMI_WRITE(sc, DDC_BYTE_COUNTER, len);
/* Set command to "Explicit Offset Address Read" */
HDMI_WRITE(sc, DDC_COMMAND, COMMAND_EOREAD);
/* Start transfer */
val = HDMI_READ(sc, DDC_CTRL);
val |= CTRL_DDC_ACMD_START;
HDMI_WRITE(sc, DDC_CTRL, val);
/* Wait for command to start */
retry = DDC_RETRY;
while (--retry > 0) {
val = HDMI_READ(sc, DDC_CTRL);
if ((val & CTRL_DDC_ACMD_START) == 0)
break;
DELAY(DDC_DELAY);
}
if (retry == 0)
return (ETIMEDOUT);
/* Ensure that the transfer completed */
val = HDMI_READ(sc, DDC_INT_STATUS);
if ((val & INT_STATUS_XFER_DONE) == 0)
return (EIO);
return (0);
}
static int
a10hdmi_ddc_read(struct a10hdmi_softc *sc, int block, uint8_t *edid)
{
int resid, off, len, error;
uint8_t *pbuf;
pbuf = edid;
resid = EDID_LENGTH;
off = (block & 1) ? EDID_LENGTH : 0;
while (resid > 0) {
len = min(resid, DDC_BLKLEN);
error = a10hdmi_ddc_xfer(sc, DDC_ADDR, block >> 1, off, len);
if (error != 0)
return (error);
bus_read_multi_1(sc->res, DDC_FIFO, pbuf, len);
pbuf += len;
off += len;
resid -= len;
}
return (0);
}
static int
a10hdmi_detect_hdmi_vsdb(uint8_t *edid)
{
int off, p, btag, blen;
if (edid[EXT_TAG] != CEA_TAG_ID)
return (0);
off = edid[CEA_DATA_OFF];
/* CEA data block collection starts at byte 4 */
if (off <= CEA_DATA_START)
return (0);
/* Parse the CEA data blocks */
for (p = CEA_DATA_START; p < off;) {
btag = BLOCK_TAG(edid[p]);
blen = BLOCK_LEN(edid[p]);
/* Make sure the length is sane */
if (p + blen + 1 > off)
break;
/* Look for a VSDB with the HDMI 24-bit IEEE registration ID */
if (btag == BLOCK_TAG_VSDB && blen >= HDMI_VSDB_MINLEN &&
memcmp(&edid[p + 1], HDMI_OUI, HDMI_OUI_LEN) == 0)
return (1);
/* Next data block */
p += (1 + blen);
}
return (0);
}
static void
a10hdmi_detect_hdmi(struct a10hdmi_softc *sc, int *phdmi, int *paudio)
{
struct edid_info ei;
uint8_t edid[EDID_LENGTH];
int block;
*phdmi = *paudio = 0;
if (edid_parse(sc->edid, &ei) != 0)
return;
/* Scan through extension blocks, looking for a CEA-861 block. */
for (block = 1; block <= ei.edid_ext_block_count; block++) {
if (a10hdmi_ddc_read(sc, block, edid) != 0)
return;
if (a10hdmi_detect_hdmi_vsdb(edid) != 0) {
*phdmi = 1;
*paudio = ((edid[CEA_DTD] & DTD_BASIC_AUDIO) != 0);
return;
}
}
}
static int
a10hdmi_get_edid(device_t dev, uint8_t **edid, uint32_t *edid_len)
{
struct a10hdmi_softc *sc;
int error, retry;
sc = device_get_softc(dev);
retry = DDC_READ_RETRY;
while (--retry > 0) {
/* I2C software reset */
HDMI_WRITE(sc, DDC_FIFO_CTRL, 0);
HDMI_WRITE(sc, DDC_CTRL, CTRL_DDC_EN | CTRL_DDC_SWRST);
DELAY(SWRST_DELAY);
if (HDMI_READ(sc, DDC_CTRL) & CTRL_DDC_SWRST) {
device_printf(dev, "DDC software reset failed\n");
return (ENXIO);
}
/* Configure DDC clock */
HDMI_WRITE(sc, DDC_CLOCK, DDC_CLOCK_M | DDC_CLOCK_N);
/* Enable SDA/SCL */
HDMI_WRITE(sc, DDC_CTRL_LINE,
DDC_LINE_SCL_ENABLE | DDC_LINE_SDA_ENABLE);
/* Read EDID block */
error = a10hdmi_ddc_read(sc, 0, sc->edid);
if (error == 0) {
*edid = sc->edid;
*edid_len = sizeof(sc->edid);
break;
}
}
if (error == 0)
a10hdmi_detect_hdmi(sc, &sc->has_hdmi, &sc->has_audio);
else
sc->has_hdmi = sc->has_audio = 0;
return (error);
}
static void
a10hdmi_set_audiomode(device_t dev, const struct videomode *mode)
{
struct a10hdmi_softc *sc;
uint32_t val;
int retry;
sc = device_get_softc(dev);
/* Disable and reset audio module and wait for reset bit to clear */
HDMI_WRITE(sc, HDMI_AUD_CTRL, AUD_CTRL_RST);
for (retry = HDMI_AUDIO_RESET_RETRY; retry > 0; retry--) {
val = HDMI_READ(sc, HDMI_AUD_CTRL);
if ((val & AUD_CTRL_RST) == 0)
break;
}
if (retry == 0) {
device_printf(dev, "timeout waiting for audio module\n");
return;
}
if (!sc->has_audio)
return;
/* DMA and FIFO control */
HDMI_WRITE(sc, HDMI_ADMA_CTRL, HDMI_ADMA_MODE_DDMA);
/* Audio format control (LPCM, S16LE, stereo) */
HDMI_WRITE(sc, HDMI_AUD_FMT, AUD_FMT_CH(HDMI_AUDIO_CHANNELS));
/* Channel mappings */
HDMI_WRITE(sc, HDMI_PCM_CTRL, HDMI_AUDIO_CHANNELMAP);
/* Clocks */
HDMI_WRITE(sc, HDMI_AUD_CTS,
HDMI_AUDIO_CTS(mode->dot_clock, HDMI_AUDIO_N));
HDMI_WRITE(sc, HDMI_AUD_N, HDMI_AUDIO_N);
/* Set sampling frequency to 48 kHz, word length to 16-bit */
HDMI_WRITE(sc, HDMI_AUD_CH_STATUS0, CH_STATUS0_FS_FREQ_48);
HDMI_WRITE(sc, HDMI_AUD_CH_STATUS1, CH_STATUS1_WORD_LEN_16);
/* Enable */
HDMI_WRITE(sc, HDMI_AUD_CTRL, AUD_CTRL_EN);
}
static int
a10hdmi_get_tcon_config(struct a10hdmi_softc *sc, int *div, int *dbl)
{
uint64_t lcd_fin, lcd_fout;
clk_t clk_lcd_parent;
const char *pname;
int error;
error = clk_get_parent(sc->clk_lcd, &clk_lcd_parent);
if (error != 0)
return (error);
/* Get the LCD CH1 special clock 2 divider */
error = clk_get_freq(sc->clk_lcd, &lcd_fout);
if (error != 0)
return (error);
error = clk_get_freq(clk_lcd_parent, &lcd_fin);
if (error != 0)
return (error);
*div = lcd_fin / lcd_fout;
/* Detect LCD CH1 special clock using a 1X or 2X source */
/* XXX */
pname = clk_get_name(clk_lcd_parent);
if (strcmp(pname, "pll3") == 0 || strcmp(pname, "pll7") == 0)
*dbl = 0;
else
*dbl = 1;
return (0);
}
static int
a10hdmi_set_videomode(device_t dev, const struct videomode *mode)
{
struct a10hdmi_softc *sc;
int error, clk_div, clk_dbl;
int dblscan, hfp, hspw, hbp, vfp, vspw, vbp;
uint32_t val;
sc = device_get_softc(dev);
dblscan = !!(mode->flags & VID_DBLSCAN);
hfp = mode->hsync_start - mode->hdisplay;
hspw = mode->hsync_end - mode->hsync_start;
hbp = mode->htotal - mode->hsync_start;
vfp = mode->vsync_start - mode->vdisplay;
vspw = mode->vsync_end - mode->vsync_start;
vbp = mode->vtotal - mode->vsync_start;
error = a10hdmi_get_tcon_config(sc, &clk_div, &clk_dbl);
if (error != 0) {
device_printf(dev, "couldn't get tcon config: %d\n", error);
return (error);
}
/* Clear interrupt status */
HDMI_WRITE(sc, HDMI_INT_STATUS, HDMI_READ(sc, HDMI_INT_STATUS));
/* Clock setup */
val = HDMI_READ(sc, HDMI_PADCTRL1);
val &= ~PADCTRL1_REG_CKSS;
val |= (clk_dbl ? PADCTRL1_REG_CKSS_2X : PADCTRL1_REG_CKSS_1X);
HDMI_WRITE(sc, HDMI_PADCTRL1, val);
HDMI_WRITE(sc, HDMI_PLLCTRL0, PLLCTRL0_PLL_EN | PLLCTRL0_BWS |
PLLCTRL0_HV_IS_33 | PLLCTRL0_LDO1_EN | PLLCTRL0_LDO2_EN |
PLLCTRL0_SDIV2 | PLLCTRL0_VCO_GAIN | PLLCTRL0_S |
PLLCTRL0_CP_S | PLLCTRL0_CS | PLLCTRL0_PREDIV(clk_div) |
PLLCTRL0_VCO_S);
/* Setup display settings */
if (bootverbose)
device_printf(dev, "HDMI: %s, Audio: %s\n",
sc->has_hdmi ? "yes" : "no", sc->has_audio ? "yes" : "no");
val = 0;
if (sc->has_hdmi)
val |= VID_CTRL_HDMI_MODE;
if (mode->flags & VID_INTERLACE)
val |= VID_CTRL_INTERLACE;
if (mode->flags & VID_DBLSCAN)
val |= VID_CTRL_REPEATER_2X;
HDMI_WRITE(sc, HDMI_VID_CTRL, val);
/* Setup display timings */
HDMI_WRITE(sc, HDMI_VID_TIMING0,
VID_ACT_V(mode->vdisplay) | VID_ACT_H(mode->hdisplay << dblscan));
HDMI_WRITE(sc, HDMI_VID_TIMING1,
VID_VBP(vbp) | VID_HBP(hbp << dblscan));
HDMI_WRITE(sc, HDMI_VID_TIMING2,
VID_VFP(vfp) | VID_HFP(hfp << dblscan));
HDMI_WRITE(sc, HDMI_VID_TIMING3,
VID_VSPW(vspw) | VID_HSPW(hspw << dblscan));
val = TX_CLOCK_NORMAL;
if (mode->flags & VID_PVSYNC)
val |= VID_VSYNC_ACTSEL;
if (mode->flags & VID_PHSYNC)
val |= VID_HSYNC_ACTSEL;
HDMI_WRITE(sc, HDMI_VID_TIMING4, val);
/* This is an ordered list of infoframe packets that the HDMI
* transmitter will send. Transmit packets in the following order:
* 1. General control packet
* 2. AVI infoframe
* 3. Audio infoframe
* There are 2 registers with 4 slots each. The list is terminated
* with the special PKT_END marker.
*/
HDMI_WRITE(sc, HDMI_PKTCTRL0,
PKTCTRL_PACKET(0, PKT_GC) | PKTCTRL_PACKET(1, PKT_AVI) |
PKTCTRL_PACKET(2, PKT_AI) | PKTCTRL_PACKET(3, PKT_END));
HDMI_WRITE(sc, HDMI_PKTCTRL1, 0);
/* Setup audio */
a10hdmi_set_audiomode(dev, mode);
return (0);
}
static int
a10hdmi_enable(device_t dev, int onoff)
{
struct a10hdmi_softc *sc;
uint32_t val;
sc = device_get_softc(dev);
/* Enable or disable video output */
val = HDMI_READ(sc, HDMI_VID_CTRL);
if (onoff)
val |= VID_CTRL_VIDEO_EN;
else
val &= ~VID_CTRL_VIDEO_EN;
HDMI_WRITE(sc, HDMI_VID_CTRL, val);
return (0);
}
static device_method_t a10hdmi_methods[] = {
/* Device interface */
DEVMETHOD(device_probe, a10hdmi_probe),
DEVMETHOD(device_attach, a10hdmi_attach),
/* HDMI interface */
DEVMETHOD(hdmi_get_edid, a10hdmi_get_edid),
DEVMETHOD(hdmi_set_videomode, a10hdmi_set_videomode),
DEVMETHOD(hdmi_enable, a10hdmi_enable),
DEVMETHOD_END
};
static driver_t a10hdmi_driver = {
"a10hdmi",
a10hdmi_methods,
sizeof(struct a10hdmi_softc),
};
DRIVER_MODULE(a10hdmi, simplebus, a10hdmi_driver, 0, 0);
MODULE_VERSION(a10hdmi, 1);
sys/arm/allwinner/a10_hdmiaudio.c
-435
View File
@@ -1,435 +0,0 @@
/*-
* Copyright (c) 2016 Jared McNeill <jmcneill@invisible.ca>
*
* 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 ``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 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.
*
* $FreeBSD$
*/
/*
* Allwinner A10/A20 HDMI Audio
*/
#include <sys/cdefs.h>
__FBSDID("$FreeBSD$");
#include <sys/param.h>
#include <sys/systm.h>
#include <sys/bus.h>
#include <sys/rman.h>
#include <sys/condvar.h>
#include <sys/kernel.h>
#include <sys/module.h>
#include <dev/sound/pcm/sound.h>
#include <dev/sound/chip.h>
#include <dev/ofw/ofw_bus.h>
#include <dev/ofw/ofw_bus_subr.h>
#include "sunxi_dma_if.h"
#include "mixer_if.h"
#define DRQTYPE_HDMIAUDIO 24
#define DRQTYPE_SDRAM 1
#define DMA_WIDTH 32
#define DMA_BURST_LEN 8
#define DDMA_BLKSIZE 32
#define DDMA_WAIT_CYC 8
#define DMABUF_MIN 4096
#define DMABUF_DEFAULT 65536
#define DMABUF_MAX 131072
#define HDMI_SAMPLERATE 48000
#define TX_FIFO 0x01c16400
static uint32_t a10hdmiaudio_fmt[] = {
SND_FORMAT(AFMT_S16_LE, 2, 0),
0
};
static struct pcmchan_caps a10hdmiaudio_pcaps = {
HDMI_SAMPLERATE, HDMI_SAMPLERATE, a10hdmiaudio_fmt, 0
};
struct a10hdmiaudio_info;
struct a10hdmiaudio_chinfo {
struct snd_dbuf *buffer;
struct pcm_channel *channel;
struct a10hdmiaudio_info *parent;
bus_dmamap_t dmamap;
void *dmaaddr;
bus_addr_t physaddr;
device_t dmac;
void *dmachan;
int run;
uint32_t pos;
uint32_t blocksize;
};
struct a10hdmiaudio_info {
device_t dev;
struct mtx *lock;
bus_dma_tag_t dmat;
unsigned dmasize;
struct a10hdmiaudio_chinfo play;
};
/*
* Mixer interface
*/
static int
a10hdmiaudio_mixer_init(struct snd_mixer *m)
{
mix_setdevs(m, SOUND_MASK_PCM);
return (0);
}
static int
a10hdmiaudio_mixer_set(struct snd_mixer *m, unsigned dev, unsigned left,
unsigned right)
{
return (-1);
}
static kobj_method_t a10hdmiaudio_mixer_methods[] = {
KOBJMETHOD(mixer_init, a10hdmiaudio_mixer_init),
KOBJMETHOD(mixer_set, a10hdmiaudio_mixer_set),
KOBJMETHOD_END
};
MIXER_DECLARE(a10hdmiaudio_mixer);
/*
* Channel interface
*/
static void
a10hdmiaudio_dmamap_cb(void *arg, bus_dma_segment_t *segs, int nseg, int error)
{
struct a10hdmiaudio_chinfo *ch = arg;
if (error != 0)
return;
ch->physaddr = segs[0].ds_addr;
}
static void
a10hdmiaudio_transfer(struct a10hdmiaudio_chinfo *ch)
{
int error;
error = SUNXI_DMA_TRANSFER(ch->dmac, ch->dmachan,
ch->physaddr + ch->pos, TX_FIFO, ch->blocksize);
if (error) {
ch->run = 0;
device_printf(ch->parent->dev, "DMA transfer failed: %d\n",
error);
}
}
static void
a10hdmiaudio_dmaconfig(struct a10hdmiaudio_chinfo *ch)
{
struct sunxi_dma_config conf;
memset(&conf, 0, sizeof(conf));
conf.src_width = conf.dst_width = DMA_WIDTH;
conf.src_burst_len = conf.dst_burst_len = DMA_BURST_LEN;
conf.src_blksize = conf.dst_blksize = DDMA_BLKSIZE;
conf.src_wait_cyc = conf.dst_wait_cyc = DDMA_WAIT_CYC;
conf.src_drqtype = DRQTYPE_SDRAM;
conf.dst_drqtype = DRQTYPE_HDMIAUDIO;
conf.dst_noincr = true;
SUNXI_DMA_SET_CONFIG(ch->dmac, ch->dmachan, &conf);
}
static void
a10hdmiaudio_dmaintr(void *priv)
{
struct a10hdmiaudio_chinfo *ch = priv;
unsigned bufsize;
bufsize = sndbuf_getsize(ch->buffer);
ch->pos += ch->blocksize;
if (ch->pos >= bufsize)
ch->pos -= bufsize;
if (ch->run) {
chn_intr(ch->channel);
a10hdmiaudio_transfer(ch);
}
}
static void
a10hdmiaudio_start(struct a10hdmiaudio_chinfo *ch)
{
ch->pos = 0;
/* Configure DMA channel */
a10hdmiaudio_dmaconfig(ch);
/* Start DMA transfer */
a10hdmiaudio_transfer(ch);
}
static void
a10hdmiaudio_stop(struct a10hdmiaudio_chinfo *ch)
{
/* Disable DMA channel */
SUNXI_DMA_HALT(ch->dmac, ch->dmachan);
}
static void *
a10hdmiaudio_chan_init(kobj_t obj, void *devinfo, struct snd_dbuf *b,
struct pcm_channel *c, int dir)
{
struct a10hdmiaudio_info *sc = devinfo;
struct a10hdmiaudio_chinfo *ch = &sc->play;
int error;
ch->parent = sc;
ch->channel = c;
ch->buffer = b;
ch->dmac = devclass_get_device(devclass_find("a10dmac"), 0);
if (ch->dmac == NULL) {
device_printf(sc->dev, "cannot find DMA controller\n");
return (NULL);
}
ch->dmachan = SUNXI_DMA_ALLOC(ch->dmac, true, a10hdmiaudio_dmaintr, ch);
if (ch->dmachan == NULL) {
device_printf(sc->dev, "cannot allocate DMA channel\n");
return (NULL);
}
error = bus_dmamem_alloc(sc->dmat, &ch->dmaaddr,
BUS_DMA_NOWAIT | BUS_DMA_COHERENT, &ch->dmamap);
if (error != 0) {
device_printf(sc->dev, "cannot allocate channel buffer\n");
return (NULL);
}
error = bus_dmamap_load(sc->dmat, ch->dmamap, ch->dmaaddr,
sc->dmasize, a10hdmiaudio_dmamap_cb, ch, BUS_DMA_NOWAIT);
if (error != 0) {
device_printf(sc->dev, "cannot load DMA map\n");
return (NULL);
}
memset(ch->dmaaddr, 0, sc->dmasize);
if (sndbuf_setup(ch->buffer, ch->dmaaddr, sc->dmasize) != 0) {
device_printf(sc->dev, "cannot setup sndbuf\n");
return (NULL);
}
return (ch);
}
static int
a10hdmiaudio_chan_free(kobj_t obj, void *data)
{
struct a10hdmiaudio_chinfo *ch = data;
struct a10hdmiaudio_info *sc = ch->parent;
SUNXI_DMA_FREE(ch->dmac, ch->dmachan);
bus_dmamap_unload(sc->dmat, ch->dmamap);
bus_dmamem_free(sc->dmat, ch->dmaaddr, ch->dmamap);
return (0);
}
static int
a10hdmiaudio_chan_setformat(kobj_t obj, void *data, uint32_t format)
{
return (0);
}
static uint32_t
a10hdmiaudio_chan_setspeed(kobj_t obj, void *data, uint32_t speed)
{
return (HDMI_SAMPLERATE);
}
static uint32_t
a10hdmiaudio_chan_setblocksize(kobj_t obj, void *data, uint32_t blocksize)
{
struct a10hdmiaudio_chinfo *ch = data;
ch->blocksize = blocksize & ~3;
return (ch->blocksize);
}
static int
a10hdmiaudio_chan_trigger(kobj_t obj, void *data, int go)
{
struct a10hdmiaudio_chinfo *ch = data;
struct a10hdmiaudio_info *sc = ch->parent;
if (!PCMTRIG_COMMON(go))
return (0);
snd_mtxlock(sc->lock);
switch (go) {
case PCMTRIG_START:
ch->run = 1;
a10hdmiaudio_start(ch);
break;
case PCMTRIG_STOP:
case PCMTRIG_ABORT:
ch->run = 0;
a10hdmiaudio_stop(ch);
break;
default:
break;
}
snd_mtxunlock(sc->lock);
return (0);
}
static uint32_t
a10hdmiaudio_chan_getptr(kobj_t obj, void *data)
{
struct a10hdmiaudio_chinfo *ch = data;
return (ch->pos);
}
static struct pcmchan_caps *
a10hdmiaudio_chan_getcaps(kobj_t obj, void *data)
{
return (&a10hdmiaudio_pcaps);
}
static kobj_method_t a10hdmiaudio_chan_methods[] = {
KOBJMETHOD(channel_init, a10hdmiaudio_chan_init),
KOBJMETHOD(channel_free, a10hdmiaudio_chan_free),
KOBJMETHOD(channel_setformat, a10hdmiaudio_chan_setformat),
KOBJMETHOD(channel_setspeed, a10hdmiaudio_chan_setspeed),
KOBJMETHOD(channel_setblocksize, a10hdmiaudio_chan_setblocksize),
KOBJMETHOD(channel_trigger, a10hdmiaudio_chan_trigger),
KOBJMETHOD(channel_getptr, a10hdmiaudio_chan_getptr),
KOBJMETHOD(channel_getcaps, a10hdmiaudio_chan_getcaps),
KOBJMETHOD_END
};
CHANNEL_DECLARE(a10hdmiaudio_chan);
/*
* Device interface
*/
static int
a10hdmiaudio_probe(device_t dev)
{
if (!ofw_bus_status_okay(dev))
return (ENXIO);
if (!ofw_bus_is_compatible(dev, "allwinner,sun7i-a20-hdmiaudio"))
return (ENXIO);
device_set_desc(dev, "Allwinner HDMI Audio");
return (BUS_PROBE_DEFAULT);
}
static int
a10hdmiaudio_attach(device_t dev)
{
struct a10hdmiaudio_info *sc;
char status[SND_STATUSLEN];
int error;
sc = malloc(sizeof(*sc), M_DEVBUF, M_WAITOK | M_ZERO);
sc->dev = dev;
sc->lock = snd_mtxcreate(device_get_nameunit(dev), "a10hdmiaudio softc");
sc->dmasize = pcm_getbuffersize(dev, DMABUF_MIN,
DMABUF_DEFAULT, DMABUF_MAX);
error = bus_dma_tag_create(
bus_get_dma_tag(dev),
4, sc->dmasize, /* alignment, boundary */
BUS_SPACE_MAXADDR_32BIT, /* lowaddr */
BUS_SPACE_MAXADDR, /* highaddr */
NULL, NULL, /* filter, filterarg */
sc->dmasize, 1, /* maxsize, nsegs */
sc->dmasize, 0, /* maxsegsize, flags */
NULL, NULL, /* lockfunc, lockarg */
&sc->dmat);
if (error != 0) {
device_printf(dev, "cannot create DMA tag\n");
goto fail;
}
if (mixer_init(dev, &a10hdmiaudio_mixer_class, sc)) {
device_printf(dev, "mixer_init failed\n");
goto fail;
}
pcm_setflags(dev, pcm_getflags(dev) | SD_F_MPSAFE);
pcm_setflags(dev, pcm_getflags(dev) | SD_F_SOFTPCMVOL);
if (pcm_register(dev, sc, 1, 0)) {
device_printf(dev, "pcm_register failed\n");
goto fail;
}
pcm_addchan(dev, PCMDIR_PLAY, &a10hdmiaudio_chan_class, sc);
snprintf(status, SND_STATUSLEN, "at %s", ofw_bus_get_name(dev));
pcm_setstatus(dev, status);
return (0);
fail:
snd_mtxfree(sc->lock);
free(sc, M_DEVBUF);
return (error);
}
static device_method_t a10hdmiaudio_pcm_methods[] = {
/* Device interface */
DEVMETHOD(device_probe, a10hdmiaudio_probe),
DEVMETHOD(device_attach, a10hdmiaudio_attach),
DEVMETHOD_END
};
static driver_t a10hdmiaudio_pcm_driver = {
"pcm",
a10hdmiaudio_pcm_methods,
PCM_SOFTC_SIZE,
};
DRIVER_MODULE(a10hdmiaudio, simplebus, a10hdmiaudio_pcm_driver, 0, 0);
MODULE_DEPEND(a10hdmiaudio, sound, SOUND_MINVER, SOUND_PREFVER, SOUND_MAXVER);
MODULE_VERSION(a10hdmiaudio, 1);