/*
* Copyright (c) 2008, Google Inc.
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* * Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* * 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 COPYRIGHT HOLDERS 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
* COPYRIGHT OWNER 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.
*/
#include <boot/boot.h>
#include <boot/board.h>
#include <msm7k/mddi.h>
unsigned fb_width = 0;
unsigned fb_height = 0;
static unsigned short *FB;
static mddi_llentry *mlist;
void wr32(void *_dst, unsigned n)
{
unsigned char *src = (unsigned char*) &n;
unsigned char *dst = _dst;
dst[0] = src[0];
dst[1] = src[1];
dst[2] = src[2];
dst[3] = src[3];
};
void printcaps(mddi_client_caps *c)
{
if((c->length != 0x4a) || (c->type != 0x42)) {
dprintf("bad caps header\n");
memset(c, 0, sizeof(*c));
return;
}
dprintf("mddi: bm: %d,%d win %d,%d rgb %x\n",
c->bitmap_width, c->bitmap_height,
c->display_window_width, c->display_window_height,
c->rgb_cap);
dprintf("mddi: vend %x prod %x\n",
c->manufacturer_name, c->product_code);
fb_width = c->bitmap_width;
fb_height = c->bitmap_height;
panel_init(c);
}
mddi_llentry *mlist_remote_write = 0;
void mddi_remote_write(unsigned val, unsigned reg)
{
mddi_llentry *ll;
mddi_register_access *ra;
unsigned s;
if(mlist_remote_write == 0) {
mlist_remote_write = alloc(sizeof(mddi_llentry));
}
ll = mlist_remote_write;
ra = &(ll->u.r);
ra->length = 14 + 4;
ra->type = TYPE_REGISTER_ACCESS;
ra->client_id = 0;
ra->rw_info = MDDI_WRITE | 1;
ra->crc = 0;
wr32(&ra->reg_addr, reg);
wr32(&ra->reg_data, val);
ll->flags = 1;
ll->header_count = 14;
ll->data_count = 4;
wr32(&ll->data, (unsigned) &ra->reg_data);
wr32(&ll->next, 0);
ll->reserved = 0;
writel((unsigned) ll, MDDI_PRI_PTR);
s = readl(MDDI_STAT);
while((s & 0x20) == 0){
s = readl(MDDI_STAT);
}
}
void mddi_start_update(void)
{
writel((unsigned) mlist, MDDI_PRI_PTR);
}
int mddi_update_done(void)
{
return !!(readl(MDDI_STAT) & MDDI_STAT_PRI_LINK_LIST_DONE);
}
void mddi_do_cmd(unsigned cmd)
{
writel(cmd, MDDI_CMD);
while (!(readl(MDDI_INT) & MDDI_INT_NO_REQ_PKTS_PENDING)) ;
}
unsigned char *rev_pkt_buf;
void mddi_get_caps(void)
{
unsigned timeout = 100000;
unsigned n;
memset(rev_pkt_buf, 0xee, 256);
// writel(CMD_HIBERNATE, MDDI_CMD);
// writel(CMD_LINK_ACTIVE, MDDI_CMD);
writel(256, MDDI_REV_SIZE);
writel((unsigned) rev_pkt_buf, MDDI_REV_PTR);
mddi_do_cmd(CMD_FORCE_NEW_REV_PTR);
/* sometimes this will fail -- do it three times for luck... */
mddi_do_cmd(CMD_RTD_MEASURE);
mdelay(1);
mddi_do_cmd(CMD_RTD_MEASURE);
mdelay(1);
mddi_do_cmd(CMD_RTD_MEASURE);
mdelay(1);
mddi_do_cmd(CMD_GET_CLIENT_CAP);
do {
n = readl(MDDI_INT);
} while(!(n & MDDI_INT_REV_DATA_AVAIL) && (--timeout));
if(timeout == 0) dprintf("timeout\n");
printcaps((mddi_client_caps*) rev_pkt_buf);
}
void mddi_init(void)
{
unsigned n;
// dprintf("mddi_init()\n");
rev_pkt_buf = alloc(256);
mddi_do_cmd(CMD_RESET);
/* disable periodic rev encap */
mddi_do_cmd(CMD_PERIODIC_REV_ENC | 0);
writel(0x0001, MDDI_VERSION);
writel(0x3C00, MDDI_BPS);
writel(0x0003, MDDI_SPM);
writel(0x0005, MDDI_TA1_LEN);
writel(0x000C, MDDI_TA2_LEN);
writel(0x0096, MDDI_DRIVE_HI);
writel(0x0050, MDDI_DRIVE_LO);
writel(0x003C, MDDI_DISP_WAKE);
writel(0x0002, MDDI_REV_RATE_DIV);
/* needs to settle for 5uS */
if (readl(MDDI_PAD_CTL) == 0) {
writel(0x08000, MDDI_PAD_CTL);
udelay(5);
}
writel(0xA850F, MDDI_PAD_CTL);
writel(0x60006, MDDI_DRIVER_START_CNT);
writel((unsigned) rev_pkt_buf, MDDI_REV_PTR);
writel(256, MDDI_REV_SIZE);
writel(256, MDDI_REV_ENCAP_SZ);
mddi_do_cmd(CMD_FORCE_NEW_REV_PTR);
/* disable hibernate */
mddi_do_cmd(CMD_HIBERNATE | 0);
panel_backlight(0);
panel_poweron();
mddi_do_cmd(CMD_LINK_ACTIVE);
do {
n = readl(MDDI_STAT);
} while(!(n & MDDI_STAT_LINK_ACTIVE));
/* v > 8? v > 8 && < 0x19 ? */
writel(2, MDDI_TEST);
// writel(CMD_PERIODIC_REV_ENC | 0, MDDI_CMD); /* disable */
mddi_get_caps();
#if 0
writel(0x5666, MDDI_MDP_VID_FMT_DES);
writel(0x00C3, MDDI_MDP_VID_PIX_ATTR);
writel(0x0000, MDDI_MDP_CLIENTID);
#endif
dprintf("panel is %d x %d\n", fb_width, fb_height);
FB = alloc(2 * fb_width * fb_height);
mlist = alloc(sizeof(mddi_llentry) * (fb_height / 8));
// dprintf("FB @ %x mlist @ %x\n", (unsigned) FB, (unsigned) mlist);
for(n = 0; n < (fb_height / 8); n++) {
unsigned y = n * 8;
unsigned pixels = fb_width * 8;
mddi_video_stream *vs = &(mlist[n].u.v);
vs->length = sizeof(mddi_video_stream) - 2 + (pixels * 2);
vs->type = TYPE_VIDEO_STREAM;
vs->client_id = 0;
vs->format = 0x5565; // FORMAT_16BPP;
vs->pixattr = PIXATTR_BOTH_EYES | PIXATTR_TO_ALL;
vs->left = 0;
vs->right = fb_width - 1;
vs->top = y;
vs->bottom = y + 7;
vs->start_x = 0;
vs->start_y = y;
vs->pixels = pixels;
vs->crc = 0;
vs->reserved = 0;
mlist[n].header_count = sizeof(mddi_video_stream) - 2;
mlist[n].data_count = pixels * 2;
mlist[n].reserved = 0;
wr32(&mlist[n].data, ((unsigned) FB) + (y * fb_width * 2));
mlist[n].flags = 0;
wr32(&mlist[n].next, (unsigned) (mlist + n + 1));
}
mlist[n-1].flags = 1;
wr32(&mlist[n-1].next, 0);
writel(CMD_HIBERNATE, MDDI_CMD);
writel(CMD_LINK_ACTIVE, MDDI_CMD);
for(n = 0; n < (fb_width * fb_height); n++) FB[n] = 0;
mddi_start_update();
panel_backlight(1);
}
void *mddi_framebuffer(void)
{
return FB;
}