diff options
Diffstat (limited to 'target/linux/xburst/files-2.6.32/drivers/video/metronomefb.c')
| -rw-r--r-- | target/linux/xburst/files-2.6.32/drivers/video/metronomefb.c | 1341 |
1 files changed, 0 insertions, 1341 deletions
diff --git a/target/linux/xburst/files-2.6.32/drivers/video/metronomefb.c b/target/linux/xburst/files-2.6.32/drivers/video/metronomefb.c deleted file mode 100644 index 390d26e0d5..0000000000 --- a/target/linux/xburst/files-2.6.32/drivers/video/metronomefb.c +++ /dev/null @@ -1,1341 +0,0 @@ -/* - * 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"); |