mirror of
git://projects.qi-hardware.com/openwrt-xburst.git
synced 2024-12-11 09:03:08 +02:00
345d039b28
git-svn-id: svn://svn.openwrt.org/openwrt/trunk@20128 3c298f89-4303-0410-b956-a3cf2f4a3e73
1342 lines
31 KiB
C
1342 lines
31 KiB
C
/*
|
|
* linux/drivers/video/metronomefb.c -- FB driver for Metronome controller
|
|
*
|
|
* Copyright (C) 2008, Jaya Kumar
|
|
*
|
|
* This file is subject to the terms and conditions of the GNU General Public
|
|
* License. See the file COPYING in the main directory of this archive for
|
|
* more details.
|
|
*
|
|
* Layout is based on skeletonfb.c by James Simmons and Geert Uytterhoeven.
|
|
*
|
|
* This work was made possible by help and equipment support from E-Ink
|
|
* Corporation. http://support.eink.com/community
|
|
*
|
|
* This driver is written to be used with the Metronome display controller.
|
|
* It is intended to be architecture independent. A board specific driver
|
|
* must be used to perform all the physical IO interactions. An example
|
|
* is provided as am200epd.c
|
|
*
|
|
*/
|
|
|
|
#include <linux/module.h>
|
|
#include <linux/kernel.h>
|
|
#include <linux/errno.h>
|
|
#include <linux/string.h>
|
|
#include <linux/mm.h>
|
|
#include <linux/slab.h>
|
|
#include <linux/vmalloc.h>
|
|
#include <linux/delay.h>
|
|
#include <linux/interrupt.h>
|
|
#include <linux/fb.h>
|
|
#include <linux/init.h>
|
|
#include <linux/platform_device.h>
|
|
#include <linux/list.h>
|
|
#include <linux/firmware.h>
|
|
#include <linux/dma-mapping.h>
|
|
#include <linux/uaccess.h>
|
|
#include <linux/irq.h>
|
|
#include <linux/ctype.h>
|
|
|
|
#include <video/metronomefb.h>
|
|
|
|
#include <asm/unaligned.h>
|
|
|
|
#define WF_MODE_INIT 0 /* Initialization */
|
|
#define WF_MODE_MU 1 /* Monochrome update */
|
|
#define WF_MODE_GU 2 /* Grayscale update */
|
|
#define WF_MODE_GC 3 /* Grayscale clearing */
|
|
|
|
static int temp = 25;
|
|
|
|
/* frame differs from image. frame includes non-visible pixels */
|
|
struct epd_frame {
|
|
int fw; /* frame width */
|
|
int fh; /* frame height */
|
|
u16 config[4];
|
|
int wfm_size;
|
|
};
|
|
|
|
static const struct epd_frame epd_frame_table[] = {
|
|
{
|
|
.fw = 832,
|
|
.fh = 622,
|
|
.config = {
|
|
15 /* sdlew */
|
|
| 2 << 8 /* sdosz */
|
|
| 0 << 11 /* sdor */
|
|
| 0 << 12 /* sdces */
|
|
| 0 << 15, /* sdcer */
|
|
42 /* gdspl */
|
|
| 1 << 8 /* gdr1 */
|
|
| 1 << 9 /* sdshr */
|
|
| 0 << 15, /* gdspp */
|
|
18 /* gdspw */
|
|
| 0 << 15, /* dispc */
|
|
599 /* vdlc */
|
|
| 0 << 11 /* dsi */
|
|
| 0 << 12, /* dsic */
|
|
},
|
|
.wfm_size = 47001,
|
|
},
|
|
{
|
|
.fw = 1088,
|
|
.fh = 791,
|
|
.config = {
|
|
0x0104,
|
|
0x031f,
|
|
0x0088,
|
|
0x02ff,
|
|
},
|
|
.wfm_size = 46770,
|
|
},
|
|
{
|
|
.fw = 1200,
|
|
.fh = 842,
|
|
.config = {
|
|
0x0101,
|
|
0x030e,
|
|
0x0012,
|
|
0x0280,
|
|
},
|
|
.wfm_size = 46770,
|
|
},
|
|
{
|
|
.fw = 800,
|
|
.fh = 600,
|
|
.config = {
|
|
15 /* sdlew */
|
|
| 2 << 8 /* sdosz */
|
|
| 0 << 11 /* sdor */
|
|
| 0 << 12 /* sdces */
|
|
| 0 << 15, /* sdcer */
|
|
42 /* gdspl */
|
|
| 1 << 8 /* gdr1 */
|
|
| 1 << 9 /* sdshr */
|
|
| 0 << 15, /* gdspp */
|
|
18 /* gdspw */
|
|
| 0 << 15, /* dispc */
|
|
599 /* vdlc */
|
|
| 0 << 11 /* dsi */
|
|
| 0 << 12, /* dsic */
|
|
},
|
|
.wfm_size = 46901,
|
|
},
|
|
};
|
|
|
|
static const struct fb_fix_screeninfo metronomefb_fix __devinitconst = {
|
|
.id = "metronomefb",
|
|
.type = FB_TYPE_PACKED_PIXELS,
|
|
.visual = FB_VISUAL_STATIC_PSEUDOCOLOR,
|
|
.xpanstep = 0,
|
|
.ypanstep = 0,
|
|
.ywrapstep = 0,
|
|
.accel = FB_ACCEL_NONE,
|
|
};
|
|
|
|
static const struct fb_var_screeninfo metronomefb_var __devinitconst = {
|
|
.bits_per_pixel = 8,
|
|
.grayscale = 1,
|
|
.nonstd = 1,
|
|
.red = { 4, 3, 0 },
|
|
.green = { 0, 0, 0 },
|
|
.blue = { 0, 0, 0 },
|
|
.transp = { 0, 0, 0 },
|
|
};
|
|
|
|
/* the waveform structure that is coming from userspace firmware */
|
|
struct waveform_hdr {
|
|
u8 stuff[32];
|
|
|
|
u8 wmta[3];
|
|
u8 fvsn;
|
|
|
|
u8 luts;
|
|
u8 mc;
|
|
u8 trc;
|
|
u8 stuff3;
|
|
|
|
u8 endb;
|
|
u8 swtb;
|
|
u8 stuff2a[2];
|
|
|
|
u8 stuff2b[3];
|
|
u8 wfm_cs;
|
|
} __attribute__ ((packed));
|
|
|
|
/* main metronomefb functions */
|
|
static u8 calc_cksum(int start, int end, u8 *mem)
|
|
{
|
|
u8 tmp = 0;
|
|
int i;
|
|
|
|
for (i = start; i < end; i++)
|
|
tmp += mem[i];
|
|
|
|
return tmp;
|
|
}
|
|
|
|
static u16 calc_img_cksum(u16 *start, int length)
|
|
{
|
|
u16 tmp = 0;
|
|
|
|
while (length--)
|
|
tmp += *start++;
|
|
|
|
return tmp;
|
|
}
|
|
|
|
/* here we decode the incoming waveform file and populate metromem */
|
|
static int load_waveform(u8 *mem, size_t size, int m, int t,
|
|
struct metronomefb_par *par)
|
|
{
|
|
int tta;
|
|
int wmta;
|
|
int trn = 0;
|
|
int i;
|
|
unsigned char v;
|
|
u8 cksum;
|
|
int cksum_idx;
|
|
int wfm_idx, owfm_idx;
|
|
int mem_idx = 0;
|
|
struct waveform_hdr *wfm_hdr;
|
|
u8 *metromem = par->metromem_wfm;
|
|
struct device *dev = &par->pdev->dev;
|
|
u8 mc, trc;
|
|
u16 *p;
|
|
u16 img_cksum;
|
|
|
|
dev_dbg(dev, "Loading waveforms, mode %d, temperature %d\n", m, t);
|
|
|
|
wfm_hdr = (struct waveform_hdr *) mem;
|
|
|
|
if (wfm_hdr->fvsn != 1) {
|
|
dev_err(dev, "Error: bad fvsn %x\n", wfm_hdr->fvsn);
|
|
return -EINVAL;
|
|
}
|
|
if (wfm_hdr->luts != 0) {
|
|
dev_err(dev, "Error: bad luts %x\n", wfm_hdr->luts);
|
|
return -EINVAL;
|
|
}
|
|
cksum = calc_cksum(32, 47, mem);
|
|
if (cksum != wfm_hdr->wfm_cs) {
|
|
dev_err(dev, "Error: bad cksum %x != %x\n", cksum,
|
|
wfm_hdr->wfm_cs);
|
|
return -EINVAL;
|
|
}
|
|
mc = wfm_hdr->mc + 1;
|
|
trc = wfm_hdr->trc + 1;
|
|
|
|
for (i = 0; i < 5; i++) {
|
|
if (*(wfm_hdr->stuff2a + i) != 0) {
|
|
dev_err(dev, "Error: unexpected value in padding\n");
|
|
return -EINVAL;
|
|
}
|
|
}
|
|
|
|
/* calculating trn. trn is something used to index into
|
|
the waveform. presumably selecting the right one for the
|
|
desired temperature. it works out the offset of the first
|
|
v that exceeds the specified temperature */
|
|
if ((sizeof(*wfm_hdr) + trc) > size)
|
|
return -EINVAL;
|
|
|
|
for (i = sizeof(*wfm_hdr); i <= sizeof(*wfm_hdr) + trc; i++) {
|
|
if (mem[i] > t) {
|
|
trn = i - sizeof(*wfm_hdr) - 1;
|
|
break;
|
|
}
|
|
}
|
|
|
|
/* check temperature range table checksum */
|
|
cksum_idx = sizeof(*wfm_hdr) + trc + 1;
|
|
if (cksum_idx > size)
|
|
return -EINVAL;
|
|
cksum = calc_cksum(sizeof(*wfm_hdr), cksum_idx, mem);
|
|
if (cksum != mem[cksum_idx]) {
|
|
dev_err(dev, "Error: bad temperature range table cksum"
|
|
" %x != %x\n", cksum, mem[cksum_idx]);
|
|
return -EINVAL;
|
|
}
|
|
|
|
/* check waveform mode table address checksum */
|
|
wmta = get_unaligned_le32(wfm_hdr->wmta) & 0x00FFFFFF;
|
|
cksum_idx = wmta + m*4 + 3;
|
|
if (cksum_idx > size)
|
|
return -EINVAL;
|
|
cksum = calc_cksum(cksum_idx - 3, cksum_idx, mem);
|
|
if (cksum != mem[cksum_idx]) {
|
|
dev_err(dev, "Error: bad mode table address cksum"
|
|
" %x != %x\n", cksum, mem[cksum_idx]);
|
|
return -EINVAL;
|
|
}
|
|
|
|
/* check waveform temperature table address checksum */
|
|
tta = get_unaligned_le32(mem + wmta + m * 4) & 0x00FFFFFF;
|
|
cksum_idx = tta + trn*4 + 3;
|
|
if (cksum_idx > size)
|
|
return -EINVAL;
|
|
cksum = calc_cksum(cksum_idx - 3, cksum_idx, mem);
|
|
if (cksum != mem[cksum_idx]) {
|
|
dev_err(dev, "Error: bad temperature table address cksum"
|
|
" %x != %x\n", cksum, mem[cksum_idx]);
|
|
return -EINVAL;
|
|
}
|
|
|
|
/* here we do the real work of putting the waveform into the
|
|
metromem buffer. this does runlength decoding of the waveform */
|
|
wfm_idx = get_unaligned_le32(mem + tta + trn * 4) & 0x00FFFFFF;
|
|
owfm_idx = wfm_idx;
|
|
if (wfm_idx > size)
|
|
return -EINVAL;
|
|
while (wfm_idx < size) {
|
|
unsigned char rl;
|
|
v = mem[wfm_idx++];
|
|
if (v == wfm_hdr->swtb) {
|
|
while (((v = mem[wfm_idx++]) != wfm_hdr->swtb) &&
|
|
wfm_idx < size)
|
|
metromem[mem_idx++] = v;
|
|
|
|
continue;
|
|
}
|
|
|
|
if (v == wfm_hdr->endb)
|
|
break;
|
|
|
|
rl = mem[wfm_idx++];
|
|
for (i = 0; i <= rl; i++)
|
|
metromem[mem_idx++] = v;
|
|
}
|
|
|
|
cksum_idx = wfm_idx;
|
|
if (cksum_idx > size)
|
|
return -EINVAL;
|
|
dev_dbg(dev, "mem_idx = %u\n", mem_idx);
|
|
cksum = calc_cksum(owfm_idx, cksum_idx, mem);
|
|
if (cksum != mem[cksum_idx]) {
|
|
dev_err(dev, "Error: bad waveform data cksum"
|
|
" %x != %x\n", cksum, mem[cksum_idx]);
|
|
return -EINVAL;
|
|
}
|
|
par->frame_count = (mem_idx/64);
|
|
|
|
p = (u16 *)par->metromem_wfm;
|
|
img_cksum = calc_img_cksum(p, 16384 / 2);
|
|
p[16384 / 2] = __cpu_to_le16(img_cksum);
|
|
|
|
par->current_wf_mode = m;
|
|
par->current_wf_temp = t;
|
|
|
|
return 0;
|
|
}
|
|
|
|
static int check_err(struct metronomefb_par *par)
|
|
{
|
|
int res;
|
|
|
|
res = par->board->get_err(par);
|
|
dev_dbg(&par->pdev->dev, "ERR = %d\n", res);
|
|
return res;
|
|
}
|
|
|
|
static inline int wait_for_rdy(struct metronomefb_par *par)
|
|
{
|
|
int res = 0;
|
|
|
|
if (!par->board->get_rdy(par))
|
|
res = par->board->met_wait_event_intr(par);
|
|
|
|
return res;
|
|
}
|
|
|
|
static int metronome_display_cmd(struct metronomefb_par *par)
|
|
{
|
|
int i;
|
|
u16 cs;
|
|
u16 opcode;
|
|
int res;
|
|
|
|
res = wait_for_rdy(par);
|
|
if (res)
|
|
return res;
|
|
|
|
dev_dbg(&par->pdev->dev, "%s: ENTER\n", __func__);
|
|
/* setup display command
|
|
we can't immediately set the opcode since the controller
|
|
will try parse the command before we've set it all up
|
|
so we just set cs here and set the opcode at the end */
|
|
|
|
if (par->metromem_cmd->opcode == 0xCC40)
|
|
opcode = cs = 0xCC41;
|
|
else
|
|
opcode = cs = 0xCC40;
|
|
|
|
/* set the args ( 2 bytes ) for display */
|
|
i = 0;
|
|
par->metromem_cmd->args[i] = 0 << 3 /* border update */
|
|
| (3 << 4)
|
|
// | ((borderval++ % 4) & 0x0F) << 4
|
|
| (par->frame_count - 1) << 8;
|
|
cs += par->metromem_cmd->args[i++];
|
|
|
|
/* the rest are 0 */
|
|
memset((u8 *) (par->metromem_cmd->args + i), 0, (32-i)*2);
|
|
|
|
par->metromem_cmd->csum = cs;
|
|
par->metromem_cmd->opcode = opcode; /* display cmd */
|
|
|
|
return 0;
|
|
|
|
}
|
|
|
|
static int __devinit metronome_powerup_cmd(struct metronomefb_par *par)
|
|
{
|
|
int i;
|
|
u16 cs;
|
|
int res;
|
|
|
|
dev_dbg(&par->pdev->dev, "%s: ENTER\n", __func__);
|
|
/* setup power up command */
|
|
par->metromem_cmd->opcode = 0x1234; /* pwr up pseudo cmd */
|
|
cs = par->metromem_cmd->opcode;
|
|
|
|
/* set pwr1,2,3 to 1024 */
|
|
for (i = 0; i < 3; i++) {
|
|
// par->metromem_cmd->args[i] = 1024;
|
|
par->metromem_cmd->args[i] = 100;
|
|
cs += par->metromem_cmd->args[i];
|
|
}
|
|
|
|
/* the rest are 0 */
|
|
memset((u8 *) (par->metromem_cmd->args + i), 0, (32-i)*2);
|
|
|
|
par->metromem_cmd->csum = cs;
|
|
|
|
msleep(1);
|
|
par->board->set_rst(par, 1);
|
|
|
|
msleep(1);
|
|
par->board->set_stdby(par, 1);
|
|
|
|
res = par->board->met_wait_event(par);
|
|
dev_dbg(&par->pdev->dev, "%s: EXIT: %d\n", __func__, res);
|
|
return res;
|
|
}
|
|
|
|
static int __devinit metronome_config_cmd(struct metronomefb_par *par)
|
|
{
|
|
/* setup config command
|
|
we can't immediately set the opcode since the controller
|
|
will try parse the command before we've set it all up */
|
|
|
|
dev_dbg(&par->pdev->dev, "%s: ENTER\n", __func__);
|
|
memcpy(par->metromem_cmd->args, par->epd_frame->config,
|
|
sizeof(par->epd_frame->config));
|
|
/* the rest are 0 */
|
|
memset((u8 *) (par->metromem_cmd->args + 4), 0, (32-4)*2);
|
|
|
|
par->metromem_cmd->csum = 0xCC10;
|
|
par->metromem_cmd->csum += calc_img_cksum(par->metromem_cmd->args, 4);
|
|
par->metromem_cmd->opcode = 0xCC10; /* config cmd */
|
|
|
|
return par->board->met_wait_event(par);
|
|
}
|
|
|
|
static int __devinit metronome_init_cmd(struct metronomefb_par *par)
|
|
{
|
|
int i;
|
|
u16 cs;
|
|
|
|
/* setup init command
|
|
we can't immediately set the opcode since the controller
|
|
will try parse the command before we've set it all up
|
|
so we just set cs here and set the opcode at the end */
|
|
|
|
dev_dbg(&par->pdev->dev, "%s: ENTER\n", __func__);
|
|
cs = 0xCC20;
|
|
|
|
/* set the args ( 2 bytes ) for init */
|
|
i = 0;
|
|
par->metromem_cmd->args[i] = 0x0007;
|
|
cs += par->metromem_cmd->args[i++];
|
|
|
|
/* the rest are 0 */
|
|
memset((u8 *) (par->metromem_cmd->args + i), 0, (32-i)*2);
|
|
|
|
par->metromem_cmd->csum = cs;
|
|
par->metromem_cmd->opcode = 0xCC20; /* init cmd */
|
|
|
|
return par->board->met_wait_event(par);
|
|
}
|
|
|
|
static int metronome_bootup(struct metronomefb_par *par)
|
|
{
|
|
int res;
|
|
|
|
res = metronome_powerup_cmd(par);
|
|
if (res) {
|
|
dev_err(&par->pdev->dev, "metronomefb: POWERUP cmd failed\n");
|
|
goto finish;
|
|
}
|
|
|
|
check_err(par);
|
|
res = metronome_config_cmd(par);
|
|
if (res) {
|
|
dev_err(&par->pdev->dev, "metronomefb: CONFIG cmd failed\n");
|
|
goto finish;
|
|
}
|
|
check_err(par);
|
|
|
|
res = metronome_init_cmd(par);
|
|
if (res)
|
|
dev_err(&par->pdev->dev, "metronomefb: INIT cmd failed\n");
|
|
check_err(par);
|
|
|
|
finish:
|
|
return res;
|
|
}
|
|
|
|
static int __devinit metronome_init_regs(struct metronomefb_par *par)
|
|
{
|
|
int res;
|
|
|
|
if (par->board->power_ctl)
|
|
par->board->power_ctl(par, METRONOME_POWER_ON);
|
|
|
|
res = metronome_bootup(par);
|
|
|
|
return res;
|
|
}
|
|
|
|
static uint16_t metronomefb_update_img_buffer_rotated(struct metronomefb_par *par)
|
|
{
|
|
int x, y;
|
|
int xstep, ystep;
|
|
int i, j;
|
|
uint16_t cksum = 0;
|
|
uint8_t *buf = par->info->screen_base;
|
|
uint32_t *img = (uint32_t *)(par->metromem_img);
|
|
int fw = par->epd_frame->fw;
|
|
int fh = par->epd_frame->fh;
|
|
int fw_buf = fw / 4;
|
|
uint32_t *fxbuckets = par->fxbuckets;
|
|
uint32_t *fybuckets = par->fybuckets;
|
|
uint32_t diff;
|
|
uint32_t tmp;
|
|
|
|
switch (par->info->var.rotate) {
|
|
case FB_ROTATE_CW:
|
|
xstep = -fh;
|
|
ystep = fw * fh + 1;
|
|
j = (fw - 1) * fh;
|
|
break;
|
|
case FB_ROTATE_UD:
|
|
xstep = -1;
|
|
ystep = 0;
|
|
j = fw * fh - 1;
|
|
break;
|
|
case FB_ROTATE_CCW:
|
|
xstep = fh;
|
|
ystep = -fw * fh - 1;
|
|
j = fh - 1;
|
|
break;
|
|
default:
|
|
BUG();
|
|
break;
|
|
}
|
|
|
|
memset(fxbuckets, 0, fw_buf * sizeof(*fxbuckets));
|
|
memset(fybuckets, 0, fh * sizeof(*fybuckets));
|
|
|
|
i = 0;
|
|
for (y = 0; y < fh; y++) {
|
|
for(x = 0; x < fw_buf; x++, i++) {
|
|
if (j < 0 || j >= fw * fh) {
|
|
printk("moo: %d %d %d %d %d\n", j, x, y, fw_buf, fh);
|
|
return 0;
|
|
}
|
|
tmp = (buf[j] << 5);
|
|
j += xstep;
|
|
tmp |= (buf[j] << 13);
|
|
j += xstep;
|
|
tmp |= (buf[j] << 21);
|
|
j += xstep;
|
|
tmp |= (buf[j] << 29);
|
|
j += xstep;
|
|
tmp &= 0xe0e0e0e0;
|
|
|
|
img[i] &= 0xf0f0f0f0;
|
|
diff = img[i] ^ tmp;
|
|
|
|
fxbuckets[x] |= diff;
|
|
fybuckets[y] |= diff;
|
|
|
|
img[i] = (img[i] >> 4) | tmp;
|
|
cksum += img[i] & 0x0000ffff;
|
|
cksum += (img[i] >> 16);
|
|
|
|
}
|
|
j += ystep;
|
|
}
|
|
|
|
return cksum;
|
|
}
|
|
|
|
static uint16_t metronomefb_update_img_buffer_normal(struct metronomefb_par *par)
|
|
{
|
|
int x, y, i;
|
|
uint16_t cksum = 0;
|
|
uint32_t *buf = (uint32_t __force *)par->info->screen_base;
|
|
uint32_t *img = (uint32_t *)(par->metromem_img);
|
|
uint32_t diff;
|
|
uint32_t tmp;
|
|
int fw = par->epd_frame->fw;
|
|
int fh = par->epd_frame->fh;
|
|
int fw_buf = fw / sizeof(*buf);
|
|
uint32_t *fxbuckets = par->fxbuckets;
|
|
uint32_t *fybuckets = par->fybuckets;
|
|
|
|
memset(fxbuckets, 0, fw_buf * sizeof(*fxbuckets));
|
|
memset(fybuckets, 0, fh * sizeof(*fybuckets));
|
|
|
|
i = 0;
|
|
for (y = 0; y < fh; y++) {
|
|
for(x = 0; x < fw_buf; x++, i++) {
|
|
tmp = (buf[i] << 5) & 0xe0e0e0e0;
|
|
img[i] &= 0xf0f0f0f0;
|
|
diff = img[i] ^ tmp;
|
|
|
|
fxbuckets[x] |= diff;
|
|
fybuckets[y] |= diff;
|
|
|
|
img[i] = (img[i] >> 4) | tmp;
|
|
cksum += img[i] & 0x0000ffff;
|
|
cksum += (img[i] >> 16);
|
|
}
|
|
}
|
|
|
|
return cksum;
|
|
}
|
|
|
|
static unsigned int metronomefb_get_change_count(struct metronomefb_par *par)
|
|
{
|
|
int min_x;
|
|
int max_x;
|
|
int min_y;
|
|
int max_y;
|
|
int fw = par->epd_frame->fw / 4;
|
|
int fh = par->epd_frame->fh;
|
|
unsigned int change_count;
|
|
uint32_t *fxbuckets = par->fxbuckets;
|
|
uint32_t *fybuckets = par->fybuckets;
|
|
|
|
for (min_x = 0; min_x < fw; ++min_x) {
|
|
if(fxbuckets[min_x])
|
|
break;
|
|
}
|
|
|
|
for (max_x = fw - 1; max_x >= 0; --max_x) {
|
|
if(fxbuckets[max_x])
|
|
break;
|
|
}
|
|
|
|
for (min_y = 0; min_y < fh; min_y++) {
|
|
if(fybuckets[min_y])
|
|
break;
|
|
}
|
|
|
|
for (max_y = fh - 1; max_y >= 0; --max_y) {
|
|
if(fybuckets[max_y])
|
|
break;
|
|
}
|
|
|
|
if ((min_x > max_x) || (min_y > max_y))
|
|
change_count = 0;
|
|
else
|
|
change_count = (max_x - min_x + 1) * (max_y - min_y + 1) * 4;
|
|
|
|
dev_dbg(&par->pdev->dev, "min_x = %d, max_x = %d, min_y = %d, max_y = %d\n",
|
|
min_x, max_x, min_y, max_y);
|
|
|
|
return change_count;
|
|
}
|
|
|
|
static void metronomefb_dpy_update(struct metronomefb_par *par, int clear_all)
|
|
{
|
|
unsigned int fbsize = par->info->fix.smem_len;
|
|
uint16_t cksum;
|
|
int m;
|
|
|
|
wait_for_rdy(par);
|
|
|
|
if (par->info->var.rotate == 0)
|
|
cksum = metronomefb_update_img_buffer_normal(par);
|
|
else
|
|
cksum = metronomefb_update_img_buffer_rotated(par);
|
|
|
|
*par->metromem_img_csum = __cpu_to_le16(cksum);
|
|
|
|
if (clear_all || par->is_first_update ||
|
|
(par->partial_updates_count == par->partial_autorefresh_interval)) {
|
|
m = WF_MODE_GC;
|
|
par->partial_updates_count = 0;
|
|
} else {
|
|
int change_count = metronomefb_get_change_count(par);
|
|
if (change_count < fbsize / 100 * par->manual_refresh_threshold)
|
|
m = WF_MODE_GU;
|
|
else
|
|
m = WF_MODE_GC;
|
|
|
|
dev_dbg(&par->pdev->dev, "change_count = %u, treshold = %u%% (%u pixels)\n",
|
|
change_count, par->manual_refresh_threshold,
|
|
fbsize / 100 * par->manual_refresh_threshold);
|
|
++par->partial_updates_count;
|
|
}
|
|
|
|
if (m != par->current_wf_mode)
|
|
load_waveform((u8 *) par->firmware->data, par->firmware->size,
|
|
m, par->current_wf_temp, par);
|
|
|
|
again:
|
|
metronome_display_cmd(par);
|
|
wait_for_rdy(par);
|
|
if (unlikely(check_err(par))) {
|
|
par->board->set_stdby(par, 0);
|
|
printk("Resetting Metronome\n");
|
|
par->board->set_rst(par, 0);
|
|
mdelay(1);
|
|
if (par->board->power_ctl)
|
|
par->board->power_ctl(par, METRONOME_POWER_OFF);
|
|
|
|
mdelay(1);
|
|
load_waveform((u8 *) par->firmware->data, par->firmware->size,
|
|
WF_MODE_GC, par->current_wf_temp, par);
|
|
|
|
if (par->board->power_ctl)
|
|
par->board->power_ctl(par, METRONOME_POWER_ON);
|
|
metronome_bootup(par);
|
|
|
|
goto again;
|
|
}
|
|
|
|
par->is_first_update = 0;
|
|
}
|
|
|
|
/* this is called back from the deferred io workqueue */
|
|
static void metronomefb_dpy_deferred_io(struct fb_info *info,
|
|
struct list_head *pagelist)
|
|
{
|
|
struct metronomefb_par *par = info->par;
|
|
|
|
/* We will update entire display because we need to change
|
|
* 'previous image' field in pixels which was changed at
|
|
* previous refresh
|
|
*/
|
|
mutex_lock(&par->lock);
|
|
metronomefb_dpy_update(par, 0);
|
|
mutex_unlock(&par->lock);
|
|
}
|
|
|
|
static void metronomefb_fillrect(struct fb_info *info,
|
|
const struct fb_fillrect *rect)
|
|
{
|
|
struct metronomefb_par *par = info->par;
|
|
|
|
mutex_lock(&par->lock);
|
|
sys_fillrect(info, rect);
|
|
metronomefb_dpy_update(par, 0);
|
|
mutex_unlock(&par->lock);
|
|
}
|
|
|
|
static void metronomefb_copyarea(struct fb_info *info,
|
|
const struct fb_copyarea *area)
|
|
{
|
|
struct metronomefb_par *par = info->par;
|
|
|
|
mutex_lock(&par->lock);
|
|
sys_copyarea(info, area);
|
|
metronomefb_dpy_update(par, 0);
|
|
mutex_unlock(&par->lock);
|
|
}
|
|
|
|
static void metronomefb_imageblit(struct fb_info *info,
|
|
const struct fb_image *image)
|
|
{
|
|
struct metronomefb_par *par = info->par;
|
|
|
|
mutex_lock(&par->lock);
|
|
sys_imageblit(info, image);
|
|
metronomefb_dpy_update(par, 0);
|
|
mutex_unlock(&par->lock);
|
|
}
|
|
|
|
/*
|
|
* this is the slow path from userspace. they can seek and write to
|
|
* the fb. it is based on fb_sys_write
|
|
*/
|
|
static ssize_t metronomefb_write(struct fb_info *info, const char __user *buf,
|
|
size_t count, loff_t *ppos)
|
|
{
|
|
struct metronomefb_par *par = info->par;
|
|
unsigned long p = *ppos;
|
|
void *dst;
|
|
int err = 0;
|
|
unsigned long total_size;
|
|
|
|
if (info->state != FBINFO_STATE_RUNNING)
|
|
return -EPERM;
|
|
|
|
total_size = info->fix.smem_len;
|
|
|
|
if (p > total_size)
|
|
return -EFBIG;
|
|
|
|
if (count > total_size) {
|
|
err = -EFBIG;
|
|
count = total_size;
|
|
}
|
|
|
|
if (count + p > total_size) {
|
|
if (!err)
|
|
err = -ENOSPC;
|
|
|
|
count = total_size - p;
|
|
}
|
|
|
|
dst = (void __force *)(info->screen_base + p);
|
|
|
|
mutex_lock(&par->lock);
|
|
|
|
if (copy_from_user(dst, buf, count))
|
|
err = -EFAULT;
|
|
|
|
if (!err)
|
|
*ppos += count;
|
|
|
|
metronomefb_dpy_update(par, 0);
|
|
mutex_unlock(&par->lock);
|
|
|
|
return (err) ? err : count;
|
|
}
|
|
|
|
static int metronome_check_var(struct fb_var_screeninfo *var, struct fb_info *info)
|
|
{
|
|
struct metronomefb_par *par = info->par;
|
|
|
|
if (par->epd_frame->fw == var->xres && par->epd_frame->fh == var->yres)
|
|
return 0;
|
|
|
|
return -EINVAL;
|
|
}
|
|
|
|
static int metronomefb_set_par(struct fb_info *info)
|
|
{
|
|
struct metronomefb_par *par = info->par;
|
|
|
|
switch (info->var.rotate) {
|
|
case FB_ROTATE_CW:
|
|
case FB_ROTATE_CCW:
|
|
info->fix.line_length = info->var.yres;
|
|
break;
|
|
case FB_ROTATE_UD:
|
|
default:
|
|
info->fix.line_length = info->var.xres;
|
|
break;
|
|
}
|
|
|
|
mutex_lock(&par->lock);
|
|
metronomefb_dpy_update(info->par, 1);
|
|
mutex_unlock(&par->lock);
|
|
|
|
return 0;
|
|
}
|
|
|
|
static struct fb_ops metronomefb_ops = {
|
|
.owner = THIS_MODULE,
|
|
.fb_write = metronomefb_write,
|
|
.fb_fillrect = metronomefb_fillrect,
|
|
.fb_copyarea = metronomefb_copyarea,
|
|
.fb_imageblit = metronomefb_imageblit,
|
|
.fb_check_var = metronome_check_var,
|
|
.fb_set_par = metronomefb_set_par,
|
|
};
|
|
|
|
static struct fb_deferred_io metronomefb_defio = {
|
|
.delay = HZ / 4,
|
|
.deferred_io = metronomefb_dpy_deferred_io,
|
|
};
|
|
|
|
static ssize_t metronomefb_defio_delay_show(struct device *dev,
|
|
struct device_attribute *attr, char *buf)
|
|
{
|
|
struct fb_info *info = dev_get_drvdata(dev);
|
|
|
|
sprintf(buf, "%lu\n", info->fbdefio->delay * 1000 / HZ);
|
|
return strlen(buf) + 1;
|
|
}
|
|
|
|
static ssize_t metronomefb_defio_delay_store(struct device *dev,
|
|
struct device_attribute *attr, const char *buf, size_t size)
|
|
{
|
|
struct fb_info *info = dev_get_drvdata(dev);
|
|
char *after;
|
|
unsigned long state = simple_strtoul(buf, &after, 10);
|
|
size_t count = after - buf;
|
|
ssize_t ret = -EINVAL;
|
|
|
|
if (*after && isspace(*after))
|
|
count++;
|
|
|
|
state = state * HZ / 1000;
|
|
|
|
if (!state)
|
|
state = 1;
|
|
|
|
if (count == size) {
|
|
ret = count;
|
|
info->fbdefio->delay = state;
|
|
}
|
|
|
|
return ret;
|
|
}
|
|
|
|
static ssize_t metronomefb_manual_refresh_thr_show(struct device *dev,
|
|
struct device_attribute *attr, char *buf)
|
|
{
|
|
struct fb_info *info = dev_get_drvdata(dev);
|
|
struct metronomefb_par *par = info->par;
|
|
|
|
return sprintf(buf, "%u\n", par->manual_refresh_threshold);
|
|
}
|
|
|
|
static ssize_t metronomefb_manual_refresh_thr_store(struct device *dev,
|
|
struct device_attribute *attr, const char *buf, size_t size)
|
|
{
|
|
struct fb_info *info = dev_get_drvdata(dev);
|
|
struct metronomefb_par *par = info->par;
|
|
char *after;
|
|
unsigned long val = simple_strtoul(buf, &after, 10);
|
|
size_t count = after - buf;
|
|
ssize_t ret = -EINVAL;
|
|
|
|
if (*after && isspace(*after))
|
|
count++;
|
|
|
|
if (val > 100)
|
|
return -EINVAL;
|
|
|
|
|
|
if (count == size) {
|
|
ret = count;
|
|
par->manual_refresh_threshold = val;
|
|
}
|
|
|
|
return ret;
|
|
}
|
|
|
|
static ssize_t metronomefb_autorefresh_interval_show(struct device *dev,
|
|
struct device_attribute *attr, char *buf)
|
|
{
|
|
struct fb_info *info = dev_get_drvdata(dev);
|
|
struct metronomefb_par *par = info->par;
|
|
|
|
return sprintf(buf, "%u\n", par->partial_autorefresh_interval);
|
|
}
|
|
|
|
static ssize_t metronomefb_autorefresh_interval_store(struct device *dev,
|
|
struct device_attribute *attr, const char *buf, size_t size)
|
|
{
|
|
struct fb_info *info = dev_get_drvdata(dev);
|
|
struct metronomefb_par *par = info->par;
|
|
char *after;
|
|
unsigned long val = simple_strtoul(buf, &after, 10);
|
|
size_t count = after - buf;
|
|
ssize_t ret = -EINVAL;
|
|
|
|
if (*after && isspace(*after))
|
|
count++;
|
|
|
|
if (val > 100)
|
|
return -EINVAL;
|
|
|
|
|
|
if (count == size) {
|
|
ret = count;
|
|
par->partial_autorefresh_interval = val;
|
|
}
|
|
|
|
return ret;
|
|
}
|
|
|
|
static ssize_t metronomefb_temp_show(struct device *dev,
|
|
struct device_attribute *attr, char *buf)
|
|
{
|
|
struct fb_info *info = dev_get_drvdata(dev);
|
|
struct metronomefb_par *par = info->par;
|
|
|
|
return sprintf(buf, "%u\n", par->current_wf_temp);
|
|
}
|
|
|
|
static ssize_t metronomefb_temp_store(struct device *dev,
|
|
struct device_attribute *attr, const char *buf, size_t size)
|
|
{
|
|
struct fb_info *info = dev_get_drvdata(dev);
|
|
struct metronomefb_par *par = info->par;
|
|
char *after;
|
|
unsigned long val = simple_strtoul(buf, &after, 10);
|
|
size_t count = after - buf;
|
|
ssize_t ret = -EINVAL;
|
|
|
|
if (*after && isspace(*after))
|
|
count++;
|
|
|
|
if (val > 100)
|
|
return -EINVAL;
|
|
|
|
|
|
if (count == size) {
|
|
ret = count;
|
|
if (val != par->current_wf_temp)
|
|
load_waveform((u8 *) par->firmware->data, par->firmware->size,
|
|
par->current_wf_mode, val, par);
|
|
}
|
|
|
|
return ret;
|
|
}
|
|
|
|
DEVICE_ATTR(defio_delay, 0644,
|
|
metronomefb_defio_delay_show, metronomefb_defio_delay_store);
|
|
DEVICE_ATTR(manual_refresh_threshold, 0644,
|
|
metronomefb_manual_refresh_thr_show, metronomefb_manual_refresh_thr_store);
|
|
DEVICE_ATTR(temp, 0644,
|
|
metronomefb_temp_show, metronomefb_temp_store);
|
|
DEVICE_ATTR(autorefresh_interval, 0644,
|
|
metronomefb_autorefresh_interval_show, metronomefb_autorefresh_interval_store);
|
|
|
|
|
|
static int __devinit metronomefb_probe(struct platform_device *dev)
|
|
{
|
|
struct fb_info *info;
|
|
struct metronome_board *board;
|
|
int retval = -ENOMEM;
|
|
int videomemorysize;
|
|
unsigned char *videomemory;
|
|
struct metronomefb_par *par;
|
|
const struct firmware *fw_entry;
|
|
int i;
|
|
int panel_type;
|
|
int fw, fh;
|
|
int epd_dt_index;
|
|
|
|
/* pick up board specific routines */
|
|
board = dev->dev.platform_data;
|
|
if (!board)
|
|
return -EINVAL;
|
|
|
|
/* try to count device specific driver, if can't, platform recalls */
|
|
if (!try_module_get(board->owner))
|
|
return -ENODEV;
|
|
|
|
info = framebuffer_alloc(sizeof(struct metronomefb_par), &dev->dev);
|
|
if (!info)
|
|
goto err;
|
|
|
|
/* we have two blocks of memory.
|
|
info->screen_base which is vm, and is the fb used by apps.
|
|
par->metromem which is physically contiguous memory and
|
|
contains the display controller commands, waveform,
|
|
processed image data and padding. this is the data pulled
|
|
by the device's LCD controller and pushed to Metronome.
|
|
the metromem memory is allocated by the board driver and
|
|
is provided to us */
|
|
|
|
panel_type = board->get_panel_type();
|
|
switch (panel_type) {
|
|
case 5:
|
|
epd_dt_index = 3;
|
|
break;
|
|
case 6:
|
|
epd_dt_index = 0;
|
|
break;
|
|
case 8:
|
|
epd_dt_index = 1;
|
|
break;
|
|
case 97:
|
|
epd_dt_index = 2;
|
|
break;
|
|
default:
|
|
dev_err(&dev->dev, "Unexpected panel type. Defaulting to 6\n");
|
|
epd_dt_index = 0;
|
|
break;
|
|
}
|
|
|
|
fw = epd_frame_table[epd_dt_index].fw;
|
|
fh = epd_frame_table[epd_dt_index].fh;
|
|
|
|
/* we need to add a spare page because our csum caching scheme walks
|
|
* to the end of the page */
|
|
videomemorysize = PAGE_SIZE + (fw * fh);
|
|
videomemory = vmalloc(videomemorysize);
|
|
if (!videomemory)
|
|
goto err_fb_rel;
|
|
|
|
memset(videomemory, 0xff, videomemorysize);
|
|
|
|
info->screen_base = (char __force __iomem *)videomemory;
|
|
info->fbops = &metronomefb_ops;
|
|
|
|
info->var = metronomefb_var;
|
|
info->var.xres = fw;
|
|
info->var.yres = fh;
|
|
info->var.xres_virtual = fw;
|
|
info->var.yres_virtual = fh;
|
|
info->fix = metronomefb_fix;
|
|
info->fix.line_length = fw;
|
|
info->fix.smem_len = fw * fh; /* Real size of image area */
|
|
par = info->par;
|
|
par->info = info;
|
|
par->board = board;
|
|
par->epd_frame = &epd_frame_table[epd_dt_index];
|
|
par->pdev = dev;
|
|
|
|
par->fxbuckets = kmalloc((fw / 4 + 1) * sizeof(*par->fxbuckets), GFP_KERNEL);
|
|
if (!par->fxbuckets)
|
|
goto err_vfree;
|
|
|
|
par->fybuckets = kmalloc(fh * sizeof(*par->fybuckets), GFP_KERNEL);
|
|
if (!par->fybuckets)
|
|
goto err_fxbuckets;
|
|
|
|
init_waitqueue_head(&par->waitq);
|
|
par->manual_refresh_threshold = 60;
|
|
par->partial_autorefresh_interval = 256;
|
|
par->partial_updates_count = 0;
|
|
par->is_first_update = 1;
|
|
mutex_init(&par->lock);
|
|
|
|
/* this table caches per page csum values. */
|
|
par->csum_table = vmalloc(videomemorysize/PAGE_SIZE);
|
|
if (!par->csum_table)
|
|
goto err_fybuckets;
|
|
|
|
/* the physical framebuffer that we use is setup by
|
|
* the platform device driver. It will provide us
|
|
* with cmd, wfm and image memory in a contiguous area. */
|
|
retval = board->setup_fb(par);
|
|
if (retval) {
|
|
dev_err(&dev->dev, "Failed to setup fb\n");
|
|
goto err_csum_table;
|
|
}
|
|
|
|
/* after this point we should have a framebuffer */
|
|
if ((!par->metromem_wfm) || (!par->metromem_img) ||
|
|
(!par->metromem_dma)) {
|
|
dev_err(&dev->dev, "fb access failure\n");
|
|
retval = -EINVAL;
|
|
goto err_csum_table;
|
|
}
|
|
|
|
info->fix.smem_start = par->metromem_dma;
|
|
|
|
/* load the waveform in. assume mode 3, temp 31 for now
|
|
a) request the waveform file from userspace
|
|
b) process waveform and decode into metromem */
|
|
retval = request_firmware(&fw_entry, "metronome.wbf", &dev->dev);
|
|
if (retval < 0) {
|
|
dev_err(&dev->dev, "Failed to get waveform\n");
|
|
goto err_csum_table;
|
|
}
|
|
|
|
retval = load_waveform((u8 *) fw_entry->data, fw_entry->size, WF_MODE_GC, temp,
|
|
par);
|
|
if (retval < 0) {
|
|
dev_err(&dev->dev, "Failed processing waveform\n");
|
|
goto err_csum_table;
|
|
}
|
|
par->firmware = fw_entry;
|
|
|
|
retval = board->setup_io(par);
|
|
if (retval) {
|
|
dev_err(&dev->dev, "metronomefb: setup_io() failed\n");
|
|
goto err_csum_table;
|
|
}
|
|
|
|
if (board->setup_irq(info))
|
|
goto err_csum_table;
|
|
|
|
retval = metronome_init_regs(par);
|
|
if (retval < 0)
|
|
goto err_free_irq;
|
|
|
|
info->flags = FBINFO_FLAG_DEFAULT;
|
|
|
|
info->fbdefio = &metronomefb_defio;
|
|
fb_deferred_io_init(info);
|
|
|
|
retval = fb_alloc_cmap(&info->cmap, 8, 0);
|
|
if (retval < 0) {
|
|
dev_err(&dev->dev, "Failed to allocate colormap\n");
|
|
goto err_free_irq;
|
|
}
|
|
|
|
/* set cmap */
|
|
for (i = 0; i < 8; i++)
|
|
info->cmap.red[i] = ((2 * i + 1)*(0xFFFF))/16;
|
|
memcpy(info->cmap.green, info->cmap.red, sizeof(u16)*8);
|
|
memcpy(info->cmap.blue, info->cmap.red, sizeof(u16)*8);
|
|
|
|
retval = register_framebuffer(info);
|
|
if (retval < 0)
|
|
goto err_cmap;
|
|
|
|
platform_set_drvdata(dev, info);
|
|
|
|
retval = device_create_file(info->dev, &dev_attr_defio_delay);
|
|
if (retval)
|
|
goto err_devattr_defio_delay;
|
|
|
|
retval = device_create_file(info->dev, &dev_attr_manual_refresh_threshold);
|
|
if (retval)
|
|
goto err_devattr_manual_refresh_thr;
|
|
|
|
retval = device_create_file(info->dev, &dev_attr_temp);
|
|
if (retval)
|
|
goto err_devattr_temp;
|
|
|
|
retval = device_create_file(info->dev, &dev_attr_autorefresh_interval);
|
|
if (retval)
|
|
goto err_devattr_autorefresh;
|
|
|
|
dev_info(&dev->dev,
|
|
"fb%d: Metronome frame buffer device, using %dK of video"
|
|
" memory\n", info->node, videomemorysize >> 10);
|
|
|
|
return 0;
|
|
|
|
device_remove_file(info->dev, &dev_attr_autorefresh_interval);
|
|
err_devattr_autorefresh:
|
|
device_remove_file(info->dev, &dev_attr_temp);
|
|
err_devattr_temp:
|
|
device_remove_file(info->dev, &dev_attr_manual_refresh_threshold);
|
|
err_devattr_manual_refresh_thr:
|
|
device_remove_file(info->dev, &dev_attr_defio_delay);
|
|
err_devattr_defio_delay:
|
|
unregister_framebuffer(info);
|
|
err_cmap:
|
|
fb_dealloc_cmap(&info->cmap);
|
|
err_free_irq:
|
|
board->cleanup(par);
|
|
err_csum_table:
|
|
vfree(par->csum_table);
|
|
err_fybuckets:
|
|
kfree(par->fybuckets);
|
|
err_fxbuckets:
|
|
kfree(par->fxbuckets);
|
|
err_vfree:
|
|
vfree(videomemory);
|
|
err_fb_rel:
|
|
framebuffer_release(info);
|
|
err:
|
|
module_put(board->owner);
|
|
return retval;
|
|
}
|
|
|
|
static int __devexit metronomefb_remove(struct platform_device *dev)
|
|
{
|
|
struct fb_info *info = platform_get_drvdata(dev);
|
|
|
|
if (info) {
|
|
struct metronomefb_par *par = info->par;
|
|
|
|
par->board->set_stdby(par, 0);
|
|
mdelay(1);
|
|
if (par->board->power_ctl)
|
|
par->board->power_ctl(par, METRONOME_POWER_OFF);
|
|
|
|
device_remove_file(info->dev, &dev_attr_autorefresh_interval);
|
|
device_remove_file(info->dev, &dev_attr_temp);
|
|
device_remove_file(info->dev, &dev_attr_manual_refresh_threshold);
|
|
device_remove_file(info->dev, &dev_attr_defio_delay);
|
|
unregister_framebuffer(info);
|
|
fb_deferred_io_cleanup(info);
|
|
fb_dealloc_cmap(&info->cmap);
|
|
par->board->cleanup(par);
|
|
vfree(par->csum_table);
|
|
kfree(par->fybuckets);
|
|
kfree(par->fxbuckets);
|
|
vfree((void __force *)info->screen_base);
|
|
module_put(par->board->owner);
|
|
release_firmware(par->firmware);
|
|
dev_dbg(&dev->dev, "calling release\n");
|
|
framebuffer_release(info);
|
|
}
|
|
return 0;
|
|
}
|
|
|
|
#ifdef CONFIG_PM
|
|
static int metronomefb_suspend(struct platform_device *pdev, pm_message_t message)
|
|
{
|
|
struct fb_info *info = platform_get_drvdata(pdev);
|
|
struct metronomefb_par *par = info->par;
|
|
|
|
par->board->set_stdby(par, 0);
|
|
par->board->set_rst(par, 0);
|
|
if (par->board->power_ctl)
|
|
par->board->power_ctl(par, METRONOME_POWER_OFF);
|
|
|
|
|
|
return 0;
|
|
}
|
|
|
|
static int metronomefb_resume(struct platform_device *pdev)
|
|
{
|
|
struct fb_info *info = platform_get_drvdata(pdev);
|
|
struct metronomefb_par *par = info->par;
|
|
|
|
if (par->board->power_ctl)
|
|
par->board->power_ctl(par, METRONOME_POWER_ON);
|
|
|
|
mutex_lock(&par->lock);
|
|
metronome_bootup(par);
|
|
mutex_unlock(&par->lock);
|
|
|
|
return 0;
|
|
}
|
|
|
|
#else
|
|
#define metronomefb_suspend NULL
|
|
#define metronomefb_resume NULL
|
|
#endif
|
|
|
|
|
|
static struct platform_driver metronomefb_driver = {
|
|
.driver = {
|
|
.owner = THIS_MODULE,
|
|
.name = "metronomefb",
|
|
},
|
|
.probe = metronomefb_probe,
|
|
.remove = __devexit_p(metronomefb_remove),
|
|
.suspend = metronomefb_suspend,
|
|
.resume = metronomefb_resume,
|
|
};
|
|
|
|
static int __init metronomefb_init(void)
|
|
{
|
|
return platform_driver_register(&metronomefb_driver);
|
|
}
|
|
|
|
static void __exit metronomefb_exit(void)
|
|
{
|
|
platform_driver_unregister(&metronomefb_driver);
|
|
}
|
|
|
|
module_param(temp, int, 0);
|
|
MODULE_PARM_DESC(temp, "Set current temperature");
|
|
|
|
module_init(metronomefb_init);
|
|
module_exit(metronomefb_exit);
|
|
|
|
MODULE_DESCRIPTION("fbdev driver for Metronome controller");
|
|
MODULE_AUTHOR("Jaya Kumar");
|
|
MODULE_LICENSE("GPL");
|