346 lines
8.6 KiB
C
346 lines
8.6 KiB
C
/*
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* Copyright (c) 2008, Google Inc.
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* * Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* * Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in
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* the documentation and/or other materials provided with the
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* distribution.
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*
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* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
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* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
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* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
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* FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
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* COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
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* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
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* BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS
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* OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
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* AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
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* OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT
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* OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*/
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#include <debug.h>
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#include <reg.h>
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#include <stdlib.h>
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#include <string.h>
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#include <dev/fbcon.h>
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#include <kernel/thread.h>
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#include <mddi.h>
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#include <target/display.h>
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#include <platform/timer.h>
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#include "mddi_hw.h"
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static mddi_llentry *mlist = NULL;
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static mddi_llentry *mlist_remote_write = NULL;
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#define MDDI_MAX_REV_PKT_SIZE 0x60
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#define MDDI_REV_PKT_BUF_SIZE 256
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static void *rev_pkt_buf;
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/* functions provided by the target specific panel code */
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void panel_init(struct mddi_client_caps *client_caps);
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void panel_poweron(void);
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void panel_backlight(int on);
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/* forward decls */
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static void mddi_start_update(void);
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static int mddi_update_done(void);
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static struct fbcon_config fb_cfg = {
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.format = FB_FORMAT_RGB565,
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.bpp = 16,
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.update_start = mddi_start_update,
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.update_done = mddi_update_done,
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};
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static void printcaps(struct mddi_client_caps *c)
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{
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if ((c->length != 0x4a) || (c->type != 0x42)) {
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dprintf(INFO, "bad caps header\n");
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memset(c, 0, sizeof(*c));
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return;
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}
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dprintf(INFO, "mddi: bm: %d,%d win %d,%d rgb %x\n",
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c->bitmap_width, c->bitmap_height,
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c->display_window_width, c->display_window_height,
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c->rgb_cap);
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dprintf(INFO, "mddi: vend %x prod %x\n",
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c->manufacturer_name, c->product_code);
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}
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/* TODO: add timeout */
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static int mddi_wait_status(unsigned statmask)
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{
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while ((readl(MDDI_STAT) & statmask) == 0);
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return 0;
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}
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/* TODO: add timeout */
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static int mddi_wait_interrupt(unsigned intmask)
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{
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while ((readl(MDDI_INT) & intmask) == 0);
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return 0;
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}
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void mddi_remote_write(unsigned val, unsigned reg)
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{
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mddi_llentry *ll;
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mddi_register_access *ra;
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ll = mlist_remote_write;
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ra = &(ll->u.r);
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ra->length = 14 + 4;
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ra->type = TYPE_REGISTER_ACCESS;
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ra->client_id = 0;
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ra->rw_info = MDDI_WRITE | 1;
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ra->crc = 0;
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ra->reg_addr = reg;
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ra->reg_data = val;
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ll->flags = 1;
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ll->header_count = 14;
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ll->data_count = 4;
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ll->data = &ra->reg_data;
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ll->next = (void *) 0;
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ll->reserved = 0;
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writel((unsigned) ll, MDDI_PRI_PTR);
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mddi_wait_status(MDDI_STAT_PRI_LINK_LIST_DONE);
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}
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static void mddi_start_update(void)
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{
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writel((unsigned) mlist, MDDI_PRI_PTR);
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}
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static int mddi_update_done(void)
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{
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return !!(readl(MDDI_STAT) & MDDI_STAT_PRI_LINK_LIST_DONE);
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}
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static void mddi_do_cmd(unsigned cmd)
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{
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writel(cmd, MDDI_CMD);
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mddi_wait_interrupt(MDDI_INT_NO_REQ_PKTS_PENDING);
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}
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static void mddi_init_rev_encap(void)
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{
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memset(rev_pkt_buf, 0xee, MDDI_REV_PKT_BUF_SIZE);
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writel((unsigned) rev_pkt_buf, MDDI_REV_PTR);
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writel((unsigned) rev_pkt_buf, MDDI_REV_PTR);
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writel(MDDI_REV_PKT_BUF_SIZE, MDDI_REV_SIZE);
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writel(MDDI_REV_PKT_BUF_SIZE, MDDI_REV_ENCAP_SZ);
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mddi_do_cmd(CMD_FORCE_NEW_REV_PTR);
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}
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static void mddi_set_auto_hibernate(unsigned on)
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{
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writel(CMD_POWER_DOWN, MDDI_CMD);
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mddi_wait_interrupt(MDDI_INT_IN_HIBERNATION);
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mddi_do_cmd(CMD_HIBERNATE | !!on);
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}
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void mddi_set_caps(mddi_client_caps *c)
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{
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/* Hardcoding the capability values */
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c->length = 74;
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c->type = 66;
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c->client_id = 0;
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c->protocol_ver = 1;
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c->min_protocol_ver = 1;
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c->data_rate_cap = 400;
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c->interface_type_cap = 0;
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c->num_alt_displays = 1;
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c->postcal_data_rate = 400;
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c->bitmap_width = TARGET_XRES;
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c->bitmap_height = TARGET_YRES;
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c->display_window_width = TARGET_XRES;
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c->display_window_height = TARGET_YRES;
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c->cmap_size = 0;
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c->cmap_rgb_width = 0;
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c->rgb_cap = 34592;
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c->mono_cap = 0;
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c->reserved1 = 0;
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c->ycbcr_cap = 0;
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c->bayer_cap = 0;
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c->alpha_cursor_planes = 0;
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c->client_feature_cap = 4489216;
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c->max_video_frame_rate_cap = 60;
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c->min_video_frame_rate_cap = 0;
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c->min_sub_frame_rate = 0;
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c->audio_buf_depth = 0;
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c->audio_channel_cap = 0;
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c->audio_sampe_rate_rap = 0;
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c->audio_sample_res = 0;
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c->mic_audio_sample_res = 0;
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c->mic_sample_rate_cap = 0;
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c->keyboard_data_fmt = 0;
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c->pointing_device_data_fmt = 0;
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c->content_protection_type = 0;
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c->manufacturer_name = 53859;
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c->product_code = 34594;
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c->reserved3 = 0;
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c->serial_no = 1;
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c->week_of_manufacture = 0;
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c->year_of_manufacture = 0;
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c->crc = 53536;
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}
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static void mddi_get_caps(struct mddi_client_caps *caps)
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{
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unsigned timeout = 100000;
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unsigned n;
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writel(0xffffffff, MDDI_INT);
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mddi_do_cmd(CMD_LINK_ACTIVE);
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/* sometimes this will fail -- do it three times for luck... */
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mddi_do_cmd(CMD_RTD_MEASURE);
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thread_sleep(1);//mdelay(1);
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mddi_do_cmd(CMD_RTD_MEASURE);
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thread_sleep(1);//mdelay(1);
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mddi_do_cmd(CMD_RTD_MEASURE);
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thread_sleep(1);//mdelay(1);
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mddi_do_cmd(CMD_GET_CLIENT_CAP);
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do {
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n = readl(MDDI_INT);
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} while (!(n & MDDI_INT_REV_DATA_AVAIL) && (--timeout));
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if (timeout == 0)
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dprintf(INFO, "timeout\n");
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memcpy(caps, rev_pkt_buf, sizeof(struct mddi_client_caps));
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}
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static unsigned mddi_init_regs(void)
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{
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mddi_do_cmd(CMD_RESET);
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mddi_do_cmd(CMD_PERIODIC_REV_ENC);
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writel(0x0001, MDDI_VERSION);
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writel(0x3C00, MDDI_BPS);
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writel(0x0003, MDDI_SPM);
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writel(0x0005, MDDI_TA1_LEN);
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writel(0x001A, MDDI_TA2_LEN);
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writel(0x0096, MDDI_DRIVE_HI);
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writel(0x0050, MDDI_DRIVE_LO);
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writel(0x003C, MDDI_DISP_WAKE);
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writel(0x0004, MDDI_REV_RATE_DIV);
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/* needs to settle for 5uS */
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if (readl(MDDI_PAD_CTL) == 0) {
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writel(0x08000, MDDI_PAD_CTL);
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udelay(5);
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}
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writel(0xA850F, MDDI_PAD_CTL);
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writel(0x60006, MDDI_DRIVER_START_CNT);
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mddi_init_rev_encap();
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/* disable hibernate */
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mddi_do_cmd(CMD_HIBERNATE | 0);
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return readl(MDDI_CORE_VER) & 0xffff;
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}
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struct fbcon_config *mddi_init(void)
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{
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unsigned n;
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struct mddi_client_caps client_caps;
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dprintf(INFO, "mddi_init()\n");
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rev_pkt_buf = memalign(32, MDDI_REV_PKT_BUF_SIZE);
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mlist_remote_write = memalign(32, sizeof(struct mddi_llentry));
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n = mddi_init_regs();
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dprintf(INFO, "mddi version: 0x%08x\n", n);
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//mddi_get_caps(&client_caps);
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//if(!(client_caps.length == 0x4a && client_caps.type == 0x42))
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{
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mddi_set_caps(&client_caps);
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}
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fb_cfg.width = client_caps.bitmap_width;
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fb_cfg.stride = fb_cfg.width;
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fb_cfg.height = client_caps.bitmap_height;
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panel_init(&client_caps);
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panel_backlight(0);
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panel_poweron();
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/* v > 8? v > 8 && < 0x19 ? */
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writel(2, MDDI_TEST);
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dprintf(INFO, "panel is %d x %d\n", fb_cfg.width, fb_cfg.height);
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fb_cfg.base =
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memalign(4096, fb_cfg.width * fb_cfg.height * (fb_cfg.bpp / 8));
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mlist = memalign(32, sizeof(mddi_llentry) * (fb_cfg.height / 8));
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dprintf(INFO, "FB @ %p mlist @ %x\n", fb_cfg.base, (unsigned) mlist);
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for(n = 0; n < (fb_cfg.height / 8); n++) {
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unsigned y = n * 8;
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unsigned pixels = fb_cfg.width * 8;
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mddi_video_stream *vs = &(mlist[n].u.v);
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vs->length = sizeof(mddi_video_stream) - 2 + (pixels * 2);
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vs->type = TYPE_VIDEO_STREAM;
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vs->client_id = 0;
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vs->format = 0x5565; // FORMAT_16BPP;
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vs->pixattr = PIXATTR_BOTH_EYES | PIXATTR_TO_ALL;
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vs->left = 0;
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vs->right = fb_cfg.width - 1;
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vs->top = y;
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vs->bottom = y + 7;
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vs->start_x = 0;
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vs->start_y = y;
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vs->pixels = pixels;
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vs->crc = 0;
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vs->reserved = 0;
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mlist[n].header_count = sizeof(mddi_video_stream) - 2;
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mlist[n].data_count = pixels * 2;
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mlist[n].reserved = 0;
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mlist[n].data = fb_cfg.base + (y * fb_cfg.width * 2);
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mlist[n].next = &mlist[n + 1];
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mlist[n].flags = 0;
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}
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mlist[n-1].flags = 1;
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mlist[n-1].next = 0;
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mddi_set_auto_hibernate(1);
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mddi_do_cmd(CMD_LINK_ACTIVE);
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panel_backlight(1);
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return &fb_cfg;
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}
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