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OpenCloudOS-Kernel/drivers/video/omap/blizzard.c

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/*
* Epson Blizzard LCD controller driver
*
* Copyright (C) 2004-2005 Nokia Corporation
* Authors: Juha Yrjola <juha.yrjola@nokia.com>
* Imre Deak <imre.deak@nokia.com>
* YUV support: Jussi Laako <jussi.laako@nokia.com>
*
* This program is free software; you can redistribute it and/or modify it
* under the terms of the GNU General Public License as published by the
* Free Software Foundation; either version 2 of the License, or (at your
* option) any later version.
*
* This program is distributed in the hope that it will be useful, but
* WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* General Public License for more details.
*
* You should have received a copy of the GNU General Public License along
* with this program; if not, write to the Free Software Foundation, Inc.,
* 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
*/
#include <linux/module.h>
#include <linux/mm.h>
#include <linux/fb.h>
#include <linux/delay.h>
#include <linux/clk.h>
#include <plat/dma.h>
#include <plat/blizzard.h>
#include "omapfb.h"
#include "dispc.h"
#define MODULE_NAME "blizzard"
#define BLIZZARD_REV_CODE 0x00
#define BLIZZARD_CONFIG 0x02
#define BLIZZARD_PLL_DIV 0x04
#define BLIZZARD_PLL_LOCK_RANGE 0x06
#define BLIZZARD_PLL_CLOCK_SYNTH_0 0x08
#define BLIZZARD_PLL_CLOCK_SYNTH_1 0x0a
#define BLIZZARD_PLL_MODE 0x0c
#define BLIZZARD_CLK_SRC 0x0e
#define BLIZZARD_MEM_BANK0_ACTIVATE 0x10
#define BLIZZARD_MEM_BANK0_STATUS 0x14
#define BLIZZARD_PANEL_CONFIGURATION 0x28
#define BLIZZARD_HDISP 0x2a
#define BLIZZARD_HNDP 0x2c
#define BLIZZARD_VDISP0 0x2e
#define BLIZZARD_VDISP1 0x30
#define BLIZZARD_VNDP 0x32
#define BLIZZARD_HSW 0x34
#define BLIZZARD_VSW 0x38
#define BLIZZARD_DISPLAY_MODE 0x68
#define BLIZZARD_INPUT_WIN_X_START_0 0x6c
#define BLIZZARD_DATA_SOURCE_SELECT 0x8e
#define BLIZZARD_DISP_MEM_DATA_PORT 0x90
#define BLIZZARD_DISP_MEM_READ_ADDR0 0x92
#define BLIZZARD_POWER_SAVE 0xE6
#define BLIZZARD_NDISP_CTRL_STATUS 0xE8
/* Data source select */
/* For S1D13745 */
#define BLIZZARD_SRC_WRITE_LCD_BACKGROUND 0x00
#define BLIZZARD_SRC_WRITE_LCD_DESTRUCTIVE 0x01
#define BLIZZARD_SRC_WRITE_OVERLAY_ENABLE 0x04
#define BLIZZARD_SRC_DISABLE_OVERLAY 0x05
/* For S1D13744 */
#define BLIZZARD_SRC_WRITE_LCD 0x00
#define BLIZZARD_SRC_BLT_LCD 0x06
#define BLIZZARD_COLOR_RGB565 0x01
#define BLIZZARD_COLOR_YUV420 0x09
#define BLIZZARD_VERSION_S1D13745 0x01 /* Hailstorm */
#define BLIZZARD_VERSION_S1D13744 0x02 /* Blizzard */
#define BLIZZARD_AUTO_UPDATE_TIME (HZ / 20)
/* Reserve 4 request slots for requests in irq context */
#define REQ_POOL_SIZE 24
#define IRQ_REQ_POOL_SIZE 4
#define REQ_FROM_IRQ_POOL 0x01
#define REQ_COMPLETE 0
#define REQ_PENDING 1
struct blizzard_reg_list {
int start;
int end;
};
/* These need to be saved / restored separately from the rest. */
static const struct blizzard_reg_list blizzard_pll_regs[] = {
{
.start = 0x04, /* Don't save PLL ctrl (0x0C) */
.end = 0x0a,
},
{
.start = 0x0e, /* Clock configuration */
.end = 0x0e,
},
};
static const struct blizzard_reg_list blizzard_gen_regs[] = {
{
.start = 0x18, /* SDRAM control */
.end = 0x20,
},
{
.start = 0x28, /* LCD Panel configuration */
.end = 0x5a, /* HSSI interface, TV configuration */
},
};
static u8 blizzard_reg_cache[0x5a / 2];
struct update_param {
int plane;
int x, y, width, height;
int out_x, out_y;
int out_width, out_height;
int color_mode;
int bpp;
int flags;
};
struct blizzard_request {
struct list_head entry;
unsigned int flags;
int (*handler)(struct blizzard_request *req);
void (*complete)(void *data);
void *complete_data;
union {
struct update_param update;
struct completion *sync;
} par;
};
struct plane_info {
unsigned long offset;
int pos_x, pos_y;
int width, height;
int out_width, out_height;
int scr_width;
int color_mode;
int bpp;
};
struct blizzard_struct {
enum omapfb_update_mode update_mode;
enum omapfb_update_mode update_mode_before_suspend;
struct timer_list auto_update_timer;
int stop_auto_update;
struct omapfb_update_window auto_update_window;
int enabled_planes;
int vid_nonstd_color;
int vid_scaled;
int last_color_mode;
int zoom_on;
int zoom_area_gx1;
int zoom_area_gx2;
int zoom_area_gy1;
int zoom_area_gy2;
int screen_width;
int screen_height;
unsigned te_connected:1;
unsigned vsync_only:1;
struct plane_info plane[OMAPFB_PLANE_NUM];
struct blizzard_request req_pool[REQ_POOL_SIZE];
struct list_head pending_req_list;
struct list_head free_req_list;
struct semaphore req_sema;
spinlock_t req_lock;
unsigned long sys_ck_rate;
struct extif_timings reg_timings, lut_timings;
u32 max_transmit_size;
u32 extif_clk_period;
int extif_clk_div;
unsigned long pix_tx_time;
unsigned long line_upd_time;
struct omapfb_device *fbdev;
struct lcd_ctrl_extif *extif;
const struct lcd_ctrl *int_ctrl;
void (*power_up)(struct device *dev);
void (*power_down)(struct device *dev);
int version;
} blizzard;
struct lcd_ctrl blizzard_ctrl;
static u8 blizzard_read_reg(u8 reg)
{
u8 data;
blizzard.extif->set_bits_per_cycle(8);
blizzard.extif->write_command(&reg, 1);
blizzard.extif->read_data(&data, 1);
return data;
}
static void blizzard_write_reg(u8 reg, u8 val)
{
blizzard.extif->set_bits_per_cycle(8);
blizzard.extif->write_command(&reg, 1);
blizzard.extif->write_data(&val, 1);
}
static void blizzard_restart_sdram(void)
{
unsigned long tmo;
blizzard_write_reg(BLIZZARD_MEM_BANK0_ACTIVATE, 0);
udelay(50);
blizzard_write_reg(BLIZZARD_MEM_BANK0_ACTIVATE, 1);
tmo = jiffies + msecs_to_jiffies(200);
while (!(blizzard_read_reg(BLIZZARD_MEM_BANK0_STATUS) & 0x01)) {
if (time_after(jiffies, tmo)) {
dev_err(blizzard.fbdev->dev,
"s1d1374x: SDRAM not ready\n");
break;
}
msleep(1);
}
}
static void blizzard_stop_sdram(void)
{
blizzard_write_reg(BLIZZARD_MEM_BANK0_ACTIVATE, 0);
}
/* Wait until the last window was completely written into the controllers
* SDRAM and we can start transferring the next window.
*/
static void blizzard_wait_line_buffer(void)
{
unsigned long tmo = jiffies + msecs_to_jiffies(30);
while (blizzard_read_reg(BLIZZARD_NDISP_CTRL_STATUS) & (1 << 7)) {
if (time_after(jiffies, tmo)) {
if (printk_ratelimit())
dev_err(blizzard.fbdev->dev,
"s1d1374x: line buffer not ready\n");
break;
}
}
}
/* Wait until the YYC color space converter is idle. */
static void blizzard_wait_yyc(void)
{
unsigned long tmo = jiffies + msecs_to_jiffies(30);
while (blizzard_read_reg(BLIZZARD_NDISP_CTRL_STATUS) & (1 << 4)) {
if (time_after(jiffies, tmo)) {
if (printk_ratelimit())
dev_err(blizzard.fbdev->dev,
"s1d1374x: YYC not ready\n");
break;
}
}
}
static void disable_overlay(void)
{
blizzard_write_reg(BLIZZARD_DATA_SOURCE_SELECT,
BLIZZARD_SRC_DISABLE_OVERLAY);
}
static void set_window_regs(int x_start, int y_start, int x_end, int y_end,
int x_out_start, int y_out_start,
int x_out_end, int y_out_end, int color_mode,
int zoom_off, int flags)
{
u8 tmp[18];
u8 cmd;
x_end--;
y_end--;
tmp[0] = x_start;
tmp[1] = x_start >> 8;
tmp[2] = y_start;
tmp[3] = y_start >> 8;
tmp[4] = x_end;
tmp[5] = x_end >> 8;
tmp[6] = y_end;
tmp[7] = y_end >> 8;
x_out_end--;
y_out_end--;
tmp[8] = x_out_start;
tmp[9] = x_out_start >> 8;
tmp[10] = y_out_start;
tmp[11] = y_out_start >> 8;
tmp[12] = x_out_end;
tmp[13] = x_out_end >> 8;
tmp[14] = y_out_end;
tmp[15] = y_out_end >> 8;
tmp[16] = color_mode;
if (zoom_off && blizzard.version == BLIZZARD_VERSION_S1D13745)
tmp[17] = BLIZZARD_SRC_WRITE_LCD_BACKGROUND;
else if (flags & OMAPFB_FORMAT_FLAG_ENABLE_OVERLAY)
tmp[17] = BLIZZARD_SRC_WRITE_OVERLAY_ENABLE;
else
tmp[17] = blizzard.version == BLIZZARD_VERSION_S1D13744 ?
BLIZZARD_SRC_WRITE_LCD :
BLIZZARD_SRC_WRITE_LCD_DESTRUCTIVE;
blizzard.extif->set_bits_per_cycle(8);
cmd = BLIZZARD_INPUT_WIN_X_START_0;
blizzard.extif->write_command(&cmd, 1);
blizzard.extif->write_data(tmp, 18);
}
static void enable_tearsync(int y, int width, int height, int screen_height,
int out_height, int force_vsync)
{
u8 b;
b = blizzard_read_reg(BLIZZARD_NDISP_CTRL_STATUS);
b |= 1 << 3;
blizzard_write_reg(BLIZZARD_NDISP_CTRL_STATUS, b);
if (likely(blizzard.vsync_only || force_vsync)) {
blizzard.extif->enable_tearsync(1, 0);
return;
}
if (width * blizzard.pix_tx_time < blizzard.line_upd_time) {
blizzard.extif->enable_tearsync(1, 0);
return;
}
if ((width * blizzard.pix_tx_time / 1000) * height <
(y + out_height) * (blizzard.line_upd_time / 1000)) {
blizzard.extif->enable_tearsync(1, 0);
return;
}
blizzard.extif->enable_tearsync(1, y + 1);
}
static void disable_tearsync(void)
{
u8 b;
blizzard.extif->enable_tearsync(0, 0);
b = blizzard_read_reg(BLIZZARD_NDISP_CTRL_STATUS);
b &= ~(1 << 3);
blizzard_write_reg(BLIZZARD_NDISP_CTRL_STATUS, b);
b = blizzard_read_reg(BLIZZARD_NDISP_CTRL_STATUS);
}
static inline void set_extif_timings(const struct extif_timings *t);
static inline struct blizzard_request *alloc_req(void)
{
unsigned long flags;
struct blizzard_request *req;
int req_flags = 0;
if (!in_interrupt())
down(&blizzard.req_sema);
else
req_flags = REQ_FROM_IRQ_POOL;
spin_lock_irqsave(&blizzard.req_lock, flags);
BUG_ON(list_empty(&blizzard.free_req_list));
req = list_entry(blizzard.free_req_list.next,
struct blizzard_request, entry);
list_del(&req->entry);
spin_unlock_irqrestore(&blizzard.req_lock, flags);
INIT_LIST_HEAD(&req->entry);
req->flags = req_flags;
return req;
}
static inline void free_req(struct blizzard_request *req)
{
unsigned long flags;
spin_lock_irqsave(&blizzard.req_lock, flags);
list_del(&req->entry);
list_add(&req->entry, &blizzard.free_req_list);
if (!(req->flags & REQ_FROM_IRQ_POOL))
up(&blizzard.req_sema);
spin_unlock_irqrestore(&blizzard.req_lock, flags);
}
static void process_pending_requests(void)
{
unsigned long flags;
spin_lock_irqsave(&blizzard.req_lock, flags);
while (!list_empty(&blizzard.pending_req_list)) {
struct blizzard_request *req;
void (*complete)(void *);
void *complete_data;
req = list_entry(blizzard.pending_req_list.next,
struct blizzard_request, entry);
spin_unlock_irqrestore(&blizzard.req_lock, flags);
if (req->handler(req) == REQ_PENDING)
return;
complete = req->complete;
complete_data = req->complete_data;
free_req(req);
if (complete)
complete(complete_data);
spin_lock_irqsave(&blizzard.req_lock, flags);
}
spin_unlock_irqrestore(&blizzard.req_lock, flags);
}
static void submit_req_list(struct list_head *head)
{
unsigned long flags;
int process = 1;
spin_lock_irqsave(&blizzard.req_lock, flags);
if (likely(!list_empty(&blizzard.pending_req_list)))
process = 0;
list_splice_init(head, blizzard.pending_req_list.prev);
spin_unlock_irqrestore(&blizzard.req_lock, flags);
if (process)
process_pending_requests();
}
static void request_complete(void *data)
{
struct blizzard_request *req = (struct blizzard_request *)data;
void (*complete)(void *);
void *complete_data;
complete = req->complete;
complete_data = req->complete_data;
free_req(req);
if (complete)
complete(complete_data);
process_pending_requests();
}
static int do_full_screen_update(struct blizzard_request *req)
{
int i;
int flags;
for (i = 0; i < 3; i++) {
struct plane_info *p = &blizzard.plane[i];
if (!(blizzard.enabled_planes & (1 << i))) {
blizzard.int_ctrl->enable_plane(i, 0);
continue;
}
dev_dbg(blizzard.fbdev->dev, "pw %d ph %d\n",
p->width, p->height);
blizzard.int_ctrl->setup_plane(i,
OMAPFB_CHANNEL_OUT_LCD, p->offset,
p->scr_width, p->pos_x, p->pos_y,
p->width, p->height,
p->color_mode);
blizzard.int_ctrl->enable_plane(i, 1);
}
dev_dbg(blizzard.fbdev->dev, "sw %d sh %d\n",
blizzard.screen_width, blizzard.screen_height);
blizzard_wait_line_buffer();
flags = req->par.update.flags;
if (flags & OMAPFB_FORMAT_FLAG_TEARSYNC)
enable_tearsync(0, blizzard.screen_width,
blizzard.screen_height,
blizzard.screen_height,
blizzard.screen_height,
flags & OMAPFB_FORMAT_FLAG_FORCE_VSYNC);
else
disable_tearsync();
set_window_regs(0, 0, blizzard.screen_width, blizzard.screen_height,
0, 0, blizzard.screen_width, blizzard.screen_height,
BLIZZARD_COLOR_RGB565, blizzard.zoom_on, flags);
blizzard.zoom_on = 0;
blizzard.extif->set_bits_per_cycle(16);
/* set_window_regs has left the register index at the right
* place, so no need to set it here.
*/
blizzard.extif->transfer_area(blizzard.screen_width,
blizzard.screen_height,
request_complete, req);
return REQ_PENDING;
}
static int check_1d_intersect(int a1, int a2, int b1, int b2)
{
if (a2 <= b1 || b2 <= a1)
return 0;
return 1;
}
/* Setup all planes with an overlapping area with the update window. */
static int do_partial_update(struct blizzard_request *req, int plane,
int x, int y, int w, int h,
int x_out, int y_out, int w_out, int h_out,
int wnd_color_mode, int bpp)
{
int i;
int gx1, gy1, gx2, gy2;
int gx1_out, gy1_out, gx2_out, gy2_out;
int color_mode;
int flags;
int zoom_off;
int have_zoom_for_this_update = 0;
/* Global coordinates, relative to pixel 0,0 of the LCD */
gx1 = x + blizzard.plane[plane].pos_x;
gy1 = y + blizzard.plane[plane].pos_y;
gx2 = gx1 + w;
gy2 = gy1 + h;
flags = req->par.update.flags;
if (flags & OMAPFB_FORMAT_FLAG_DOUBLE) {
gx1_out = gx1;
gy1_out = gy1;
gx2_out = gx1 + w * 2;
gy2_out = gy1 + h * 2;
} else {
gx1_out = x_out + blizzard.plane[plane].pos_x;
gy1_out = y_out + blizzard.plane[plane].pos_y;
gx2_out = gx1_out + w_out;
gy2_out = gy1_out + h_out;
}
for (i = 0; i < OMAPFB_PLANE_NUM; i++) {
struct plane_info *p = &blizzard.plane[i];
int px1, py1;
int px2, py2;
int pw, ph;
int pposx, pposy;
unsigned long offset;
if (!(blizzard.enabled_planes & (1 << i)) ||
(wnd_color_mode && i != plane)) {
blizzard.int_ctrl->enable_plane(i, 0);
continue;
}
/* Plane coordinates */
if (i == plane) {
/* Plane in which we are doing the update.
* Local coordinates are the one in the update
* request.
*/
px1 = x;
py1 = y;
px2 = x + w;
py2 = y + h;
pposx = 0;
pposy = 0;
} else {
/* Check if this plane has an overlapping part */
px1 = gx1 - p->pos_x;
py1 = gy1 - p->pos_y;
px2 = gx2 - p->pos_x;
py2 = gy2 - p->pos_y;
if (px1 >= p->width || py1 >= p->height ||
px2 <= 0 || py2 <= 0) {
blizzard.int_ctrl->enable_plane(i, 0);
continue;
}
/* Calculate the coordinates for the overlapping
* part in the plane's local coordinates.
*/
pposx = -px1;
pposy = -py1;
if (px1 < 0)
px1 = 0;
if (py1 < 0)
py1 = 0;
if (px2 > p->width)
px2 = p->width;
if (py2 > p->height)
py2 = p->height;
if (pposx < 0)
pposx = 0;
if (pposy < 0)
pposy = 0;
}
pw = px2 - px1;
ph = py2 - py1;
offset = p->offset + (p->scr_width * py1 + px1) * p->bpp / 8;
if (wnd_color_mode)
/* Window embedded in the plane with a differing
* color mode / bpp. Calculate the number of DMA
* transfer elements in terms of the plane's bpp.
*/
pw = (pw + 1) * bpp / p->bpp;
#ifdef VERBOSE
dev_dbg(blizzard.fbdev->dev,
"plane %d offset %#08lx pposx %d pposy %d "
"px1 %d py1 %d pw %d ph %d\n",
i, offset, pposx, pposy, px1, py1, pw, ph);
#endif
blizzard.int_ctrl->setup_plane(i,
OMAPFB_CHANNEL_OUT_LCD, offset,
p->scr_width,
pposx, pposy, pw, ph,
p->color_mode);
blizzard.int_ctrl->enable_plane(i, 1);
}
switch (wnd_color_mode) {
case OMAPFB_COLOR_YUV420:
color_mode = BLIZZARD_COLOR_YUV420;
/* Currently only the 16 bits/pixel cycle format is
* supported on the external interface. Adjust the number
* of transfer elements per line for 12bpp format.
*/
w = (w + 1) * 3 / 4;
break;
default:
color_mode = BLIZZARD_COLOR_RGB565;
break;
}
blizzard_wait_line_buffer();
if (blizzard.last_color_mode == BLIZZARD_COLOR_YUV420)
blizzard_wait_yyc();
blizzard.last_color_mode = color_mode;
if (flags & OMAPFB_FORMAT_FLAG_TEARSYNC)
enable_tearsync(gy1, w, h,
blizzard.screen_height,
h_out,
flags & OMAPFB_FORMAT_FLAG_FORCE_VSYNC);
else
disable_tearsync();
if ((gx2_out - gx1_out) != (gx2 - gx1) ||
(gy2_out - gy1_out) != (gy2 - gy1))
have_zoom_for_this_update = 1;
/* 'background' type of screen update (as opposed to 'destructive')
can be used to disable scaling if scaling is active */
zoom_off = blizzard.zoom_on && !have_zoom_for_this_update &&
(gx1_out == 0) && (gx2_out == blizzard.screen_width) &&
(gy1_out == 0) && (gy2_out == blizzard.screen_height) &&
(gx1 == 0) && (gy1 == 0);
if (blizzard.zoom_on && !have_zoom_for_this_update && !zoom_off &&
check_1d_intersect(blizzard.zoom_area_gx1, blizzard.zoom_area_gx2,
gx1_out, gx2_out) &&
check_1d_intersect(blizzard.zoom_area_gy1, blizzard.zoom_area_gy2,
gy1_out, gy2_out)) {
/* Previous screen update was using scaling, current update
* is not using it. Additionally, current screen update is
* going to overlap with the scaled area. Scaling needs to be
* disabled in order to avoid 'magnifying glass' effect.
* Dummy setup of background window can be used for this.
*/
set_window_regs(0, 0, blizzard.screen_width,
blizzard.screen_height,
0, 0, blizzard.screen_width,
blizzard.screen_height,
BLIZZARD_COLOR_RGB565, 1, flags);
blizzard.zoom_on = 0;
}
/* remember scaling settings if we have scaled update */
if (have_zoom_for_this_update) {
blizzard.zoom_on = 1;
blizzard.zoom_area_gx1 = gx1_out;
blizzard.zoom_area_gx2 = gx2_out;
blizzard.zoom_area_gy1 = gy1_out;
blizzard.zoom_area_gy2 = gy2_out;
}
set_window_regs(gx1, gy1, gx2, gy2, gx1_out, gy1_out, gx2_out, gy2_out,
color_mode, zoom_off, flags);
if (zoom_off)
blizzard.zoom_on = 0;
blizzard.extif->set_bits_per_cycle(16);
/* set_window_regs has left the register index at the right
* place, so no need to set it here.
*/
blizzard.extif->transfer_area(w, h, request_complete, req);
return REQ_PENDING;
}
static int send_frame_handler(struct blizzard_request *req)
{
struct update_param *par = &req->par.update;
int plane = par->plane;
#ifdef VERBOSE
dev_dbg(blizzard.fbdev->dev,
"send_frame: x %d y %d w %d h %d "
"x_out %d y_out %d w_out %d h_out %d "
"color_mode %04x flags %04x planes %01x\n",
par->x, par->y, par->width, par->height,
par->out_x, par->out_y, par->out_width, par->out_height,
par->color_mode, par->flags, blizzard.enabled_planes);
#endif
if (par->flags & OMAPFB_FORMAT_FLAG_DISABLE_OVERLAY)
disable_overlay();
if ((blizzard.enabled_planes & blizzard.vid_nonstd_color) ||
(blizzard.enabled_planes & blizzard.vid_scaled))
return do_full_screen_update(req);
return do_partial_update(req, plane, par->x, par->y,
par->width, par->height,
par->out_x, par->out_y,
par->out_width, par->out_height,
par->color_mode, par->bpp);
}
static void send_frame_complete(void *data)
{
}
#define ADD_PREQ(_x, _y, _w, _h, _x_out, _y_out, _w_out, _h_out) do { \
req = alloc_req(); \
req->handler = send_frame_handler; \
req->complete = send_frame_complete; \
req->par.update.plane = plane_idx; \
req->par.update.x = _x; \
req->par.update.y = _y; \
req->par.update.width = _w; \
req->par.update.height = _h; \
req->par.update.out_x = _x_out; \
req->par.update.out_y = _y_out; \
req->par.update.out_width = _w_out; \
req->par.update.out_height = _h_out; \
req->par.update.bpp = bpp; \
req->par.update.color_mode = color_mode;\
req->par.update.flags = flags; \
list_add_tail(&req->entry, req_head); \
} while(0)
static void create_req_list(int plane_idx,
struct omapfb_update_window *win,
struct list_head *req_head)
{
struct blizzard_request *req;
int x = win->x;
int y = win->y;
int width = win->width;
int height = win->height;
int x_out = win->out_x;
int y_out = win->out_y;
int width_out = win->out_width;
int height_out = win->out_height;
int color_mode;
int bpp;
int flags;
unsigned int ystart = y;
unsigned int yspan = height;
unsigned int ystart_out = y_out;
unsigned int yspan_out = height_out;
flags = win->format & ~OMAPFB_FORMAT_MASK;
color_mode = win->format & OMAPFB_FORMAT_MASK;
switch (color_mode) {
case OMAPFB_COLOR_YUV420:
/* Embedded window with different color mode */
bpp = 12;
/* X, Y, height must be aligned at 2, width at 4 pixels */
x &= ~1;
y &= ~1;
height = yspan = height & ~1;
width = width & ~3;
break;
default:
/* Same as the plane color mode */
bpp = blizzard.plane[plane_idx].bpp;
break;
}
if (width * height * bpp / 8 > blizzard.max_transmit_size) {
yspan = blizzard.max_transmit_size / (width * bpp / 8);
yspan_out = yspan * height_out / height;
ADD_PREQ(x, ystart, width, yspan, x_out, ystart_out,
width_out, yspan_out);
ystart += yspan;
ystart_out += yspan_out;
yspan = height - yspan;
yspan_out = height_out - yspan_out;
flags &= ~OMAPFB_FORMAT_FLAG_TEARSYNC;
}
ADD_PREQ(x, ystart, width, yspan, x_out, ystart_out,
width_out, yspan_out);
}
static void auto_update_complete(void *data)
{
if (!blizzard.stop_auto_update)
mod_timer(&blizzard.auto_update_timer,
jiffies + BLIZZARD_AUTO_UPDATE_TIME);
}
static void blizzard_update_window_auto(unsigned long arg)
{
LIST_HEAD(req_list);
struct blizzard_request *last;
struct omapfb_plane_struct *plane;
plane = blizzard.fbdev->fb_info[0]->par;
create_req_list(plane->idx,
&blizzard.auto_update_window, &req_list);
last = list_entry(req_list.prev, struct blizzard_request, entry);
last->complete = auto_update_complete;
last->complete_data = NULL;
submit_req_list(&req_list);
}
int blizzard_update_window_async(struct fb_info *fbi,
struct omapfb_update_window *win,
void (*complete_callback)(void *arg),
void *complete_callback_data)
{
LIST_HEAD(req_list);
struct blizzard_request *last;
struct omapfb_plane_struct *plane = fbi->par;
if (unlikely(blizzard.update_mode != OMAPFB_MANUAL_UPDATE))
return -EINVAL;
if (unlikely(!blizzard.te_connected &&
(win->format & OMAPFB_FORMAT_FLAG_TEARSYNC)))
return -EINVAL;
create_req_list(plane->idx, win, &req_list);
last = list_entry(req_list.prev, struct blizzard_request, entry);
last->complete = complete_callback;
last->complete_data = (void *)complete_callback_data;
submit_req_list(&req_list);
return 0;
}
EXPORT_SYMBOL(blizzard_update_window_async);
static int update_full_screen(void)
{
return blizzard_update_window_async(blizzard.fbdev->fb_info[0],
&blizzard.auto_update_window, NULL, NULL);
}
static int blizzard_setup_plane(int plane, int channel_out,
unsigned long offset, int screen_width,
int pos_x, int pos_y, int width, int height,
int color_mode)
{
struct plane_info *p;
#ifdef VERBOSE
dev_dbg(blizzard.fbdev->dev,
"plane %d ch_out %d offset %#08lx scr_width %d "
"pos_x %d pos_y %d width %d height %d color_mode %d\n",
plane, channel_out, offset, screen_width,
pos_x, pos_y, width, height, color_mode);
#endif
if ((unsigned)plane > OMAPFB_PLANE_NUM)
return -EINVAL;
p = &blizzard.plane[plane];
switch (color_mode) {
case OMAPFB_COLOR_YUV422:
case OMAPFB_COLOR_YUY422:
p->bpp = 16;
blizzard.vid_nonstd_color &= ~(1 << plane);
break;
case OMAPFB_COLOR_YUV420:
p->bpp = 12;
blizzard.vid_nonstd_color |= 1 << plane;
break;
case OMAPFB_COLOR_RGB565:
p->bpp = 16;
blizzard.vid_nonstd_color &= ~(1 << plane);
break;
default:
return -EINVAL;
}
p->offset = offset;
p->pos_x = pos_x;
p->pos_y = pos_y;
p->width = width;
p->height = height;
p->scr_width = screen_width;
if (!p->out_width)
p->out_width = width;
if (!p->out_height)
p->out_height = height;
p->color_mode = color_mode;
return 0;
}
static int blizzard_set_scale(int plane, int orig_w, int orig_h,
int out_w, int out_h)
{
struct plane_info *p = &blizzard.plane[plane];
int r;
dev_dbg(blizzard.fbdev->dev,
"plane %d orig_w %d orig_h %d out_w %d out_h %d\n",
plane, orig_w, orig_h, out_w, out_h);
if ((unsigned)plane > OMAPFB_PLANE_NUM)
return -ENODEV;
r = blizzard.int_ctrl->set_scale(plane, orig_w, orig_h, out_w, out_h);
if (r < 0)
return r;
p->width = orig_w;
p->height = orig_h;
p->out_width = out_w;
p->out_height = out_h;
if (orig_w == out_w && orig_h == out_h)
blizzard.vid_scaled &= ~(1 << plane);
else
blizzard.vid_scaled |= 1 << plane;
return 0;
}
static int blizzard_set_rotate(int angle)
{
u32 l;
l = blizzard_read_reg(BLIZZARD_PANEL_CONFIGURATION);
l &= ~0x03;
switch (angle) {
case 0:
l = l | 0x00;
break;
case 90:
l = l | 0x03;
break;
case 180:
l = l | 0x02;
break;
case 270:
l = l | 0x01;
break;
default:
return -EINVAL;
}
blizzard_write_reg(BLIZZARD_PANEL_CONFIGURATION, l);
return 0;
}
static int blizzard_enable_plane(int plane, int enable)
{
if (enable)
blizzard.enabled_planes |= 1 << plane;
else
blizzard.enabled_planes &= ~(1 << plane);
return 0;
}
static int sync_handler(struct blizzard_request *req)
{
complete(req->par.sync);
return REQ_COMPLETE;
}
static void blizzard_sync(void)
{
LIST_HEAD(req_list);
struct blizzard_request *req;
struct completion comp;
req = alloc_req();
req->handler = sync_handler;
req->complete = NULL;
init_completion(&comp);
req->par.sync = &comp;
list_add(&req->entry, &req_list);
submit_req_list(&req_list);
wait_for_completion(&comp);
}
static void blizzard_bind_client(struct omapfb_notifier_block *nb)
{
if (blizzard.update_mode == OMAPFB_MANUAL_UPDATE) {
omapfb_notify_clients(blizzard.fbdev, OMAPFB_EVENT_READY);
}
}
static int blizzard_set_update_mode(enum omapfb_update_mode mode)
{
if (unlikely(mode != OMAPFB_MANUAL_UPDATE &&
mode != OMAPFB_AUTO_UPDATE &&
mode != OMAPFB_UPDATE_DISABLED))
return -EINVAL;
if (mode == blizzard.update_mode)
return 0;
dev_info(blizzard.fbdev->dev, "s1d1374x: setting update mode to %s\n",
mode == OMAPFB_UPDATE_DISABLED ? "disabled" :
(mode == OMAPFB_AUTO_UPDATE ? "auto" : "manual"));
switch (blizzard.update_mode) {
case OMAPFB_MANUAL_UPDATE:
omapfb_notify_clients(blizzard.fbdev, OMAPFB_EVENT_DISABLED);
break;
case OMAPFB_AUTO_UPDATE:
blizzard.stop_auto_update = 1;
del_timer_sync(&blizzard.auto_update_timer);
break;
case OMAPFB_UPDATE_DISABLED:
break;
}
blizzard.update_mode = mode;
blizzard_sync();
blizzard.stop_auto_update = 0;
switch (mode) {
case OMAPFB_MANUAL_UPDATE:
omapfb_notify_clients(blizzard.fbdev, OMAPFB_EVENT_READY);
break;
case OMAPFB_AUTO_UPDATE:
blizzard_update_window_auto(0);
break;
case OMAPFB_UPDATE_DISABLED:
break;
}
return 0;
}
static enum omapfb_update_mode blizzard_get_update_mode(void)
{
return blizzard.update_mode;
}
static inline void set_extif_timings(const struct extif_timings *t)
{
blizzard.extif->set_timings(t);
}
static inline unsigned long round_to_extif_ticks(unsigned long ps, int div)
{
int bus_tick = blizzard.extif_clk_period * div;
return (ps + bus_tick - 1) / bus_tick * bus_tick;
}
static int calc_reg_timing(unsigned long sysclk, int div)
{
struct extif_timings *t;
unsigned long systim;
/* CSOnTime 0, WEOnTime 2 ns, REOnTime 2 ns,
* AccessTime 2 ns + 12.2 ns (regs),
* WEOffTime = WEOnTime + 1 ns,
* REOffTime = REOnTime + 12 ns (regs),
* CSOffTime = REOffTime + 1 ns
* ReadCycle = 2ns + 2*SYSCLK (regs),
* WriteCycle = 2*SYSCLK + 2 ns,
* CSPulseWidth = 10 ns */
systim = 1000000000 / (sysclk / 1000);
dev_dbg(blizzard.fbdev->dev,
"Blizzard systim %lu ps extif_clk_period %u div %d\n",
systim, blizzard.extif_clk_period, div);
t = &blizzard.reg_timings;
memset(t, 0, sizeof(*t));
t->clk_div = div;
t->cs_on_time = 0;
t->we_on_time = round_to_extif_ticks(t->cs_on_time + 2000, div);
t->re_on_time = round_to_extif_ticks(t->cs_on_time + 2000, div);
t->access_time = round_to_extif_ticks(t->re_on_time + 12200, div);
t->we_off_time = round_to_extif_ticks(t->we_on_time + 1000, div);
t->re_off_time = round_to_extif_ticks(t->re_on_time + 13000, div);
t->cs_off_time = round_to_extif_ticks(t->re_off_time + 1000, div);
t->we_cycle_time = round_to_extif_ticks(2 * systim + 2000, div);
if (t->we_cycle_time < t->we_off_time)
t->we_cycle_time = t->we_off_time;
t->re_cycle_time = round_to_extif_ticks(2 * systim + 2000, div);
if (t->re_cycle_time < t->re_off_time)
t->re_cycle_time = t->re_off_time;
t->cs_pulse_width = 0;
dev_dbg(blizzard.fbdev->dev, "[reg]cson %d csoff %d reon %d reoff %d\n",
t->cs_on_time, t->cs_off_time, t->re_on_time, t->re_off_time);
dev_dbg(blizzard.fbdev->dev, "[reg]weon %d weoff %d recyc %d wecyc %d\n",
t->we_on_time, t->we_off_time, t->re_cycle_time,
t->we_cycle_time);
dev_dbg(blizzard.fbdev->dev, "[reg]rdaccess %d cspulse %d\n",
t->access_time, t->cs_pulse_width);
return blizzard.extif->convert_timings(t);
}
static int calc_lut_timing(unsigned long sysclk, int div)
{
struct extif_timings *t;
unsigned long systim;
/* CSOnTime 0, WEOnTime 2 ns, REOnTime 2 ns,
* AccessTime 2 ns + 4 * SYSCLK + 26 (lut),
* WEOffTime = WEOnTime + 1 ns,
* REOffTime = REOnTime + 4*SYSCLK + 26 ns (lut),
* CSOffTime = REOffTime + 1 ns
* ReadCycle = 2ns + 4*SYSCLK + 26 ns (lut),
* WriteCycle = 2*SYSCLK + 2 ns,
* CSPulseWidth = 10 ns */
systim = 1000000000 / (sysclk / 1000);
dev_dbg(blizzard.fbdev->dev,
"Blizzard systim %lu ps extif_clk_period %u div %d\n",
systim, blizzard.extif_clk_period, div);
t = &blizzard.lut_timings;
memset(t, 0, sizeof(*t));
t->clk_div = div;
t->cs_on_time = 0;
t->we_on_time = round_to_extif_ticks(t->cs_on_time + 2000, div);
t->re_on_time = round_to_extif_ticks(t->cs_on_time + 2000, div);
t->access_time = round_to_extif_ticks(t->re_on_time + 4 * systim +
26000, div);
t->we_off_time = round_to_extif_ticks(t->we_on_time + 1000, div);
t->re_off_time = round_to_extif_ticks(t->re_on_time + 4 * systim +
26000, div);
t->cs_off_time = round_to_extif_ticks(t->re_off_time + 1000, div);
t->we_cycle_time = round_to_extif_ticks(2 * systim + 2000, div);
if (t->we_cycle_time < t->we_off_time)
t->we_cycle_time = t->we_off_time;
t->re_cycle_time = round_to_extif_ticks(2000 + 4 * systim + 26000, div);
if (t->re_cycle_time < t->re_off_time)
t->re_cycle_time = t->re_off_time;
t->cs_pulse_width = 0;
dev_dbg(blizzard.fbdev->dev,
"[lut]cson %d csoff %d reon %d reoff %d\n",
t->cs_on_time, t->cs_off_time, t->re_on_time, t->re_off_time);
dev_dbg(blizzard.fbdev->dev,
"[lut]weon %d weoff %d recyc %d wecyc %d\n",
t->we_on_time, t->we_off_time, t->re_cycle_time,
t->we_cycle_time);
dev_dbg(blizzard.fbdev->dev, "[lut]rdaccess %d cspulse %d\n",
t->access_time, t->cs_pulse_width);
return blizzard.extif->convert_timings(t);
}
static int calc_extif_timings(unsigned long sysclk, int *extif_mem_div)
{
int max_clk_div;
int div;
blizzard.extif->get_clk_info(&blizzard.extif_clk_period, &max_clk_div);
for (div = 1; div <= max_clk_div; div++) {
if (calc_reg_timing(sysclk, div) == 0)
break;
}
if (div > max_clk_div) {
dev_dbg(blizzard.fbdev->dev, "reg timing failed\n");
goto err;
}
*extif_mem_div = div;
for (div = 1; div <= max_clk_div; div++) {
if (calc_lut_timing(sysclk, div) == 0)
break;
}
if (div > max_clk_div)
goto err;
blizzard.extif_clk_div = div;
return 0;
err:
dev_err(blizzard.fbdev->dev, "can't setup timings\n");
return -1;
}
static void calc_blizzard_clk_rates(unsigned long ext_clk,
unsigned long *sys_clk, unsigned long *pix_clk)
{
int pix_clk_src;
int sys_div = 0, sys_mul = 0;
int pix_div;
pix_clk_src = blizzard_read_reg(BLIZZARD_CLK_SRC);
pix_div = ((pix_clk_src >> 3) & 0x1f) + 1;
if ((pix_clk_src & (0x3 << 1)) == 0) {
/* Source is the PLL */
sys_div = (blizzard_read_reg(BLIZZARD_PLL_DIV) & 0x3f) + 1;
sys_mul = blizzard_read_reg(BLIZZARD_PLL_CLOCK_SYNTH_0);
sys_mul |= ((blizzard_read_reg(BLIZZARD_PLL_CLOCK_SYNTH_1)
& 0x0f) << 11);
*sys_clk = ext_clk * sys_mul / sys_div;
} else /* else source is ext clk, or oscillator */
*sys_clk = ext_clk;
*pix_clk = *sys_clk / pix_div; /* HZ */
dev_dbg(blizzard.fbdev->dev,
"ext_clk %ld pix_src %d pix_div %d sys_div %d sys_mul %d\n",
ext_clk, pix_clk_src & (0x3 << 1), pix_div, sys_div, sys_mul);
dev_dbg(blizzard.fbdev->dev, "sys_clk %ld pix_clk %ld\n",
*sys_clk, *pix_clk);
}
static int setup_tearsync(unsigned long pix_clk, int extif_div)
{
int hdisp, vdisp;
int hndp, vndp;
int hsw, vsw;
int hs, vs;
int hs_pol_inv, vs_pol_inv;
int use_hsvs, use_ndp;
u8 b;
hsw = blizzard_read_reg(BLIZZARD_HSW);
vsw = blizzard_read_reg(BLIZZARD_VSW);
hs_pol_inv = !(hsw & 0x80);
vs_pol_inv = !(vsw & 0x80);
hsw = hsw & 0x7f;
vsw = vsw & 0x3f;
hdisp = blizzard_read_reg(BLIZZARD_HDISP) * 8;
vdisp = blizzard_read_reg(BLIZZARD_VDISP0) +
((blizzard_read_reg(BLIZZARD_VDISP1) & 0x3) << 8);
hndp = blizzard_read_reg(BLIZZARD_HNDP) & 0x3f;
vndp = blizzard_read_reg(BLIZZARD_VNDP);
/* time to transfer one pixel (16bpp) in ps */
blizzard.pix_tx_time = blizzard.reg_timings.we_cycle_time;
if (blizzard.extif->get_max_tx_rate != NULL) {
/* The external interface might have a rate limitation,
* if so, we have to maximize our transfer rate.
*/
unsigned long min_tx_time;
unsigned long max_tx_rate = blizzard.extif->get_max_tx_rate();
dev_dbg(blizzard.fbdev->dev, "max_tx_rate %ld HZ\n",
max_tx_rate);
min_tx_time = 1000000000 / (max_tx_rate / 1000); /* ps */
if (blizzard.pix_tx_time < min_tx_time)
blizzard.pix_tx_time = min_tx_time;
}
/* time to update one line in ps */
blizzard.line_upd_time = (hdisp + hndp) * 1000000 / (pix_clk / 1000);
blizzard.line_upd_time *= 1000;
if (hdisp * blizzard.pix_tx_time > blizzard.line_upd_time)
/* transfer speed too low, we might have to use both
* HS and VS */
use_hsvs = 1;
else
/* decent transfer speed, we'll always use only VS */
use_hsvs = 0;
if (use_hsvs && (hs_pol_inv || vs_pol_inv)) {
/* HS or'ed with VS doesn't work, use the active high
* TE signal based on HNDP / VNDP */
use_ndp = 1;
hs_pol_inv = 0;
vs_pol_inv = 0;
hs = hndp;
vs = vndp;
} else {
/* Use HS or'ed with VS as a TE signal if both are needed
* or VNDP if only vsync is needed. */
use_ndp = 0;
hs = hsw;
vs = vsw;
if (!use_hsvs) {
hs_pol_inv = 0;
vs_pol_inv = 0;
}
}
hs = hs * 1000000 / (pix_clk / 1000); /* ps */
hs *= 1000;
vs = vs * (hdisp + hndp) * 1000000 / (pix_clk / 1000); /* ps */
vs *= 1000;
if (vs <= hs)
return -EDOM;
/* set VS to 120% of HS to minimize VS detection time */
vs = hs * 12 / 10;
/* minimize HS too */
if (hs > 10000)
hs = 10000;
b = blizzard_read_reg(BLIZZARD_NDISP_CTRL_STATUS);
b &= ~0x3;
b |= use_hsvs ? 1 : 0;
b |= (use_ndp && use_hsvs) ? 0 : 2;
blizzard_write_reg(BLIZZARD_NDISP_CTRL_STATUS, b);
blizzard.vsync_only = !use_hsvs;
dev_dbg(blizzard.fbdev->dev,
"pix_clk %ld HZ pix_tx_time %ld ps line_upd_time %ld ps\n",
pix_clk, blizzard.pix_tx_time, blizzard.line_upd_time);
dev_dbg(blizzard.fbdev->dev,
"hs %d ps vs %d ps mode %d vsync_only %d\n",
hs, vs, b & 0x3, !use_hsvs);
return blizzard.extif->setup_tearsync(1, hs, vs,
hs_pol_inv, vs_pol_inv,
extif_div);
}
static void blizzard_get_caps(int plane, struct omapfb_caps *caps)
{
blizzard.int_ctrl->get_caps(plane, caps);
caps->ctrl |= OMAPFB_CAPS_MANUAL_UPDATE |
OMAPFB_CAPS_WINDOW_PIXEL_DOUBLE |
OMAPFB_CAPS_WINDOW_SCALE |
OMAPFB_CAPS_WINDOW_OVERLAY |
OMAPFB_CAPS_WINDOW_ROTATE;
if (blizzard.te_connected)
caps->ctrl |= OMAPFB_CAPS_TEARSYNC;
caps->wnd_color |= (1 << OMAPFB_COLOR_RGB565) |
(1 << OMAPFB_COLOR_YUV420);
}
static void _save_regs(const struct blizzard_reg_list *list, int cnt)
{
int i;
for (i = 0; i < cnt; i++, list++) {
int reg;
for (reg = list->start; reg <= list->end; reg += 2)
blizzard_reg_cache[reg / 2] = blizzard_read_reg(reg);
}
}
static void _restore_regs(const struct blizzard_reg_list *list, int cnt)
{
int i;
for (i = 0; i < cnt; i++, list++) {
int reg;
for (reg = list->start; reg <= list->end; reg += 2)
blizzard_write_reg(reg, blizzard_reg_cache[reg / 2]);
}
}
static void blizzard_save_all_regs(void)
{
_save_regs(blizzard_pll_regs, ARRAY_SIZE(blizzard_pll_regs));
_save_regs(blizzard_gen_regs, ARRAY_SIZE(blizzard_gen_regs));
}
static void blizzard_restore_pll_regs(void)
{
_restore_regs(blizzard_pll_regs, ARRAY_SIZE(blizzard_pll_regs));
}
static void blizzard_restore_gen_regs(void)
{
_restore_regs(blizzard_gen_regs, ARRAY_SIZE(blizzard_gen_regs));
}
static void blizzard_suspend(void)
{
u32 l;
unsigned long tmo;
if (blizzard.last_color_mode) {
update_full_screen();
blizzard_sync();
}
blizzard.update_mode_before_suspend = blizzard.update_mode;
/* the following will disable clocks as well */
blizzard_set_update_mode(OMAPFB_UPDATE_DISABLED);
blizzard_save_all_regs();
blizzard_stop_sdram();
l = blizzard_read_reg(BLIZZARD_POWER_SAVE);
/* Standby, Sleep. We assume we use an external clock. */
l |= 0x03;
blizzard_write_reg(BLIZZARD_POWER_SAVE, l);
tmo = jiffies + msecs_to_jiffies(100);
while (!(blizzard_read_reg(BLIZZARD_PLL_MODE) & (1 << 1))) {
if (time_after(jiffies, tmo)) {
dev_err(blizzard.fbdev->dev,
"s1d1374x: sleep timeout, stopping PLL manually\n");
l = blizzard_read_reg(BLIZZARD_PLL_MODE);
l &= ~0x03;
/* Disable PLL, counter function */
l |= 0x2;
blizzard_write_reg(BLIZZARD_PLL_MODE, l);
break;
}
msleep(1);
}
if (blizzard.power_down != NULL)
blizzard.power_down(blizzard.fbdev->dev);
}
static void blizzard_resume(void)
{
u32 l;
if (blizzard.power_up != NULL)
blizzard.power_up(blizzard.fbdev->dev);
l = blizzard_read_reg(BLIZZARD_POWER_SAVE);
/* Standby, Sleep */
l &= ~0x03;
blizzard_write_reg(BLIZZARD_POWER_SAVE, l);
blizzard_restore_pll_regs();
l = blizzard_read_reg(BLIZZARD_PLL_MODE);
l &= ~0x03;
/* Enable PLL, counter function */
l |= 0x1;
blizzard_write_reg(BLIZZARD_PLL_MODE, l);
while (!(blizzard_read_reg(BLIZZARD_PLL_DIV) & (1 << 7)))
msleep(1);
blizzard_restart_sdram();
blizzard_restore_gen_regs();
/* Enable display */
blizzard_write_reg(BLIZZARD_DISPLAY_MODE, 0x01);
/* the following will enable clocks as necessary */
blizzard_set_update_mode(blizzard.update_mode_before_suspend);
/* Force a background update */
blizzard.zoom_on = 1;
update_full_screen();
blizzard_sync();
}
static int blizzard_init(struct omapfb_device *fbdev, int ext_mode,
struct omapfb_mem_desc *req_vram)
{
int r = 0, i;
u8 rev, conf;
unsigned long ext_clk;
int extif_div;
unsigned long sys_clk, pix_clk;
struct omapfb_platform_data *omapfb_conf;
struct blizzard_platform_data *ctrl_conf;
blizzard.fbdev = fbdev;
BUG_ON(!fbdev->ext_if || !fbdev->int_ctrl);
blizzard.fbdev = fbdev;
blizzard.extif = fbdev->ext_if;
blizzard.int_ctrl = fbdev->int_ctrl;
omapfb_conf = fbdev->dev->platform_data;
ctrl_conf = omapfb_conf->ctrl_platform_data;
if (ctrl_conf == NULL || ctrl_conf->get_clock_rate == NULL) {
dev_err(fbdev->dev, "s1d1374x: missing platform data\n");
r = -ENOENT;
goto err1;
}
blizzard.power_down = ctrl_conf->power_down;
blizzard.power_up = ctrl_conf->power_up;
spin_lock_init(&blizzard.req_lock);
if ((r = blizzard.int_ctrl->init(fbdev, 1, req_vram)) < 0)
goto err1;
if ((r = blizzard.extif->init(fbdev)) < 0)
goto err2;
blizzard_ctrl.set_color_key = blizzard.int_ctrl->set_color_key;
blizzard_ctrl.get_color_key = blizzard.int_ctrl->get_color_key;
blizzard_ctrl.setup_mem = blizzard.int_ctrl->setup_mem;
blizzard_ctrl.mmap = blizzard.int_ctrl->mmap;
ext_clk = ctrl_conf->get_clock_rate(fbdev->dev);
if ((r = calc_extif_timings(ext_clk, &extif_div)) < 0)
goto err3;
set_extif_timings(&blizzard.reg_timings);
if (blizzard.power_up != NULL)
blizzard.power_up(fbdev->dev);
calc_blizzard_clk_rates(ext_clk, &sys_clk, &pix_clk);
if ((r = calc_extif_timings(sys_clk, &extif_div)) < 0)
goto err3;
set_extif_timings(&blizzard.reg_timings);
if (!(blizzard_read_reg(BLIZZARD_PLL_DIV) & 0x80)) {
dev_err(fbdev->dev,
"controller not initialized by the bootloader\n");
r = -ENODEV;
goto err3;
}
if (ctrl_conf->te_connected) {
if ((r = setup_tearsync(pix_clk, extif_div)) < 0)
goto err3;
blizzard.te_connected = 1;
}
rev = blizzard_read_reg(BLIZZARD_REV_CODE);
conf = blizzard_read_reg(BLIZZARD_CONFIG);
switch (rev & 0xfc) {
case 0x9c:
blizzard.version = BLIZZARD_VERSION_S1D13744;
pr_info("omapfb: s1d13744 LCD controller rev %d "
"initialized (CNF pins %x)\n", rev & 0x03, conf & 0x07);
break;
case 0xa4:
blizzard.version = BLIZZARD_VERSION_S1D13745;
pr_info("omapfb: s1d13745 LCD controller rev %d "
"initialized (CNF pins %x)\n", rev & 0x03, conf & 0x07);
break;
default:
dev_err(fbdev->dev, "invalid s1d1374x revision %02x\n",
rev);
r = -ENODEV;
goto err3;
}
blizzard.max_transmit_size = blizzard.extif->max_transmit_size;
blizzard.update_mode = OMAPFB_UPDATE_DISABLED;
blizzard.auto_update_window.x = 0;
blizzard.auto_update_window.y = 0;
blizzard.auto_update_window.width = fbdev->panel->x_res;
blizzard.auto_update_window.height = fbdev->panel->y_res;
blizzard.auto_update_window.out_x = 0;
blizzard.auto_update_window.out_x = 0;
blizzard.auto_update_window.out_width = fbdev->panel->x_res;
blizzard.auto_update_window.out_height = fbdev->panel->y_res;
blizzard.auto_update_window.format = 0;
blizzard.screen_width = fbdev->panel->x_res;
blizzard.screen_height = fbdev->panel->y_res;
init_timer(&blizzard.auto_update_timer);
blizzard.auto_update_timer.function = blizzard_update_window_auto;
blizzard.auto_update_timer.data = 0;
INIT_LIST_HEAD(&blizzard.free_req_list);
INIT_LIST_HEAD(&blizzard.pending_req_list);
for (i = 0; i < ARRAY_SIZE(blizzard.req_pool); i++)
list_add(&blizzard.req_pool[i].entry, &blizzard.free_req_list);
BUG_ON(i <= IRQ_REQ_POOL_SIZE);
sema_init(&blizzard.req_sema, i - IRQ_REQ_POOL_SIZE);
return 0;
err3:
if (blizzard.power_down != NULL)
blizzard.power_down(fbdev->dev);
blizzard.extif->cleanup();
err2:
blizzard.int_ctrl->cleanup();
err1:
return r;
}
static void blizzard_cleanup(void)
{
blizzard_set_update_mode(OMAPFB_UPDATE_DISABLED);
blizzard.extif->cleanup();
blizzard.int_ctrl->cleanup();
if (blizzard.power_down != NULL)
blizzard.power_down(blizzard.fbdev->dev);
}
struct lcd_ctrl blizzard_ctrl = {
.name = "blizzard",
.init = blizzard_init,
.cleanup = blizzard_cleanup,
.bind_client = blizzard_bind_client,
.get_caps = blizzard_get_caps,
.set_update_mode = blizzard_set_update_mode,
.get_update_mode = blizzard_get_update_mode,
.setup_plane = blizzard_setup_plane,
.set_scale = blizzard_set_scale,
.enable_plane = blizzard_enable_plane,
.set_rotate = blizzard_set_rotate,
.update_window = blizzard_update_window_async,
.sync = blizzard_sync,
.suspend = blizzard_suspend,
.resume = blizzard_resume,
};
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