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-rw-r--r--drivers/video/Kconfig31
-rw-r--r--drivers/video/Makefile1
-rw-r--r--drivers/video/am200epd.c295
-rw-r--r--drivers/video/metronomefb.c288
4 files changed, 167 insertions, 448 deletions
diff --git a/drivers/video/Kconfig b/drivers/video/Kconfig
index 70d135e0cc47..d85a74c64b54 100644
--- a/drivers/video/Kconfig
+++ b/drivers/video/Kconfig
@@ -172,11 +172,6 @@ config FB_DEFERRED_IO
bool
depends on FB
-config FB_METRONOME
- tristate
- depends on FB
- depends on FB_DEFERRED_IO
-
config FB_HECUBA
tristate
depends on FB
@@ -1974,19 +1969,6 @@ config FB_XILINX
framebuffer. ML300 carries a 640*480 LCD display on the board,
ML403 uses a standard DB15 VGA connector.
-config FB_AM200EPD
- tristate "AM-200 E-Ink EPD devkit support"
- depends on FB && ARCH_PXA && MMU
- select FB_SYS_FILLRECT
- select FB_SYS_COPYAREA
- select FB_SYS_IMAGEBLIT
- select FB_SYS_FOPS
- select FB_DEFERRED_IO
- select FB_METRONOME
- help
- This enables support for the Metronome display controller used on
- the E-Ink AM-200 EPD devkit.
-
config FB_COBALT
tristate "Cobalt server LCD frame buffer support"
depends on FB && MIPS_COBALT
@@ -2041,6 +2023,19 @@ config XEN_FBDEV_FRONTEND
frame buffer driver. It communicates with a back-end
in another domain.
+config FB_METRONOME
+ tristate "E-Ink Metronome/8track controller support"
+ depends on FB
+ select FB_SYS_FILLRECT
+ select FB_SYS_COPYAREA
+ select FB_SYS_IMAGEBLIT
+ select FB_SYS_FOPS
+ select FB_DEFERRED_IO
+ help
+ This driver implements support for the E-Ink Metronome
+ controller. The pre-release name for this device was 8track
+ and could also have been called by some vendors as PVI-nnnn.
+
source "drivers/video/omap/Kconfig"
source "drivers/video/backlight/Kconfig"
diff --git a/drivers/video/Makefile b/drivers/video/Makefile
index a6b55297a7fb..ad0330bf9be3 100644
--- a/drivers/video/Makefile
+++ b/drivers/video/Makefile
@@ -29,7 +29,6 @@ obj-$(CONFIG_FB_DEFERRED_IO) += fb_defio.o
# Hardware specific drivers go first
obj-$(CONFIG_FB_AMIGA) += amifb.o c2p.o
-obj-$(CONFIG_FB_AM200EPD) += am200epd.o
obj-$(CONFIG_FB_ARC) += arcfb.o
obj-$(CONFIG_FB_CLPS711X) += clps711xfb.o
obj-$(CONFIG_FB_CYBER2000) += cyber2000fb.o
diff --git a/drivers/video/am200epd.c b/drivers/video/am200epd.c
deleted file mode 100644
index 0c35b8b0160e..000000000000
--- a/drivers/video/am200epd.c
+++ /dev/null
@@ -1,295 +0,0 @@
-/*
- * linux/drivers/video/am200epd.c -- Platform device for AM200 EPD kit
- *
- * 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.
- * on the AM200 EPD prototype kit/development kit with an E-Ink 800x600
- * Vizplex EPD on a Gumstix board using the Lyre interface board.
- *
- */
-
-#include <linux/module.h>
-#include <linux/kernel.h>
-#include <linux/errno.h>
-#include <linux/string.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/uaccess.h>
-#include <linux/irq.h>
-
-#include <video/metronomefb.h>
-
-#include <mach/pxa-regs.h>
-
-/* register offsets for gpio control */
-#define LED_GPIO_PIN 51
-#define STDBY_GPIO_PIN 48
-#define RST_GPIO_PIN 49
-#define RDY_GPIO_PIN 32
-#define ERR_GPIO_PIN 17
-#define PCBPWR_GPIO_PIN 16
-
-#define AF_SEL_GPIO_N 0x3
-#define GAFR0_U_OFFSET(pin) ((pin - 16) * 2)
-#define GAFR1_L_OFFSET(pin) ((pin - 32) * 2)
-#define GAFR1_U_OFFSET(pin) ((pin - 48) * 2)
-#define GPDR1_OFFSET(pin) (pin - 32)
-#define GPCR1_OFFSET(pin) (pin - 32)
-#define GPSR1_OFFSET(pin) (pin - 32)
-#define GPCR0_OFFSET(pin) (pin)
-#define GPSR0_OFFSET(pin) (pin)
-
-static void am200_set_gpio_output(int pin, int val)
-{
- u8 index;
-
- index = pin >> 4;
-
- switch (index) {
- case 1:
- if (val)
- GPSR0 |= (1 << GPSR0_OFFSET(pin));
- else
- GPCR0 |= (1 << GPCR0_OFFSET(pin));
- break;
- case 2:
- break;
- case 3:
- if (val)
- GPSR1 |= (1 << GPSR1_OFFSET(pin));
- else
- GPCR1 |= (1 << GPCR1_OFFSET(pin));
- break;
- default:
- printk(KERN_ERR "unimplemented\n");
- }
-}
-
-static void __devinit am200_init_gpio_pin(int pin, int dir)
-{
- u8 index;
- /* dir 0 is output, 1 is input
- - do 2 things here:
- - set gpio alternate function to standard gpio
- - set gpio direction to input or output */
-
- index = pin >> 4;
- switch (index) {
- case 1:
- GAFR0_U &= ~(AF_SEL_GPIO_N << GAFR0_U_OFFSET(pin));
-
- if (dir)
- GPDR0 &= ~(1 << pin);
- else
- GPDR0 |= (1 << pin);
- break;
- case 2:
- GAFR1_L &= ~(AF_SEL_GPIO_N << GAFR1_L_OFFSET(pin));
-
- if (dir)
- GPDR1 &= ~(1 << GPDR1_OFFSET(pin));
- else
- GPDR1 |= (1 << GPDR1_OFFSET(pin));
- break;
- case 3:
- GAFR1_U &= ~(AF_SEL_GPIO_N << GAFR1_U_OFFSET(pin));
-
- if (dir)
- GPDR1 &= ~(1 << GPDR1_OFFSET(pin));
- else
- GPDR1 |= (1 << GPDR1_OFFSET(pin));
- break;
- default:
- printk(KERN_ERR "unimplemented\n");
- }
-}
-
-static void am200_init_gpio_regs(struct metronomefb_par *par)
-{
- am200_init_gpio_pin(LED_GPIO_PIN, 0);
- am200_set_gpio_output(LED_GPIO_PIN, 0);
-
- am200_init_gpio_pin(STDBY_GPIO_PIN, 0);
- am200_set_gpio_output(STDBY_GPIO_PIN, 0);
-
- am200_init_gpio_pin(RST_GPIO_PIN, 0);
- am200_set_gpio_output(RST_GPIO_PIN, 0);
-
- am200_init_gpio_pin(RDY_GPIO_PIN, 1);
-
- am200_init_gpio_pin(ERR_GPIO_PIN, 1);
-
- am200_init_gpio_pin(PCBPWR_GPIO_PIN, 0);
- am200_set_gpio_output(PCBPWR_GPIO_PIN, 0);
-}
-
-static void am200_disable_lcd_controller(struct metronomefb_par *par)
-{
- LCSR = 0xffffffff; /* Clear LCD Status Register */
- LCCR0 |= LCCR0_DIS; /* Disable LCD Controller */
-
- /* we reset and just wait for things to settle */
- msleep(200);
-}
-
-static void am200_enable_lcd_controller(struct metronomefb_par *par)
-{
- LCSR = 0xffffffff;
- FDADR0 = par->metromem_desc_dma;
- LCCR0 |= LCCR0_ENB;
-}
-
-static void am200_init_lcdc_regs(struct metronomefb_par *par)
-{
- /* here we do:
- - disable the lcd controller
- - setup lcd control registers
- - setup dma descriptor
- - reenable lcd controller
- */
-
- /* disable the lcd controller */
- am200_disable_lcd_controller(par);
-
- /* setup lcd control registers */
- LCCR0 = LCCR0_LDM | LCCR0_SFM | LCCR0_IUM | LCCR0_EFM | LCCR0_PAS
- | LCCR0_QDM | LCCR0_BM | LCCR0_OUM;
-
- LCCR1 = (par->info->var.xres/2 - 1) /* pixels per line */
- | (27 << 10) /* hsync pulse width - 1 */
- | (33 << 16) /* eol pixel count */
- | (33 << 24); /* bol pixel count */
-
- LCCR2 = (par->info->var.yres - 1) /* lines per panel */
- | (24 << 10) /* vsync pulse width - 1 */
- | (2 << 16) /* eof pixel count */
- | (0 << 24); /* bof pixel count */
-
- LCCR3 = 2 /* pixel clock divisor */
- | (24 << 8) /* AC Bias pin freq */
- | LCCR3_16BPP /* BPP */
- | LCCR3_PCP; /* PCP falling edge */
-
-}
-
-static void am200_post_dma_setup(struct metronomefb_par *par)
-{
- par->metromem_desc->mFDADR0 = par->metromem_desc_dma;
- par->metromem_desc->mFSADR0 = par->metromem_dma;
- par->metromem_desc->mFIDR0 = 0;
- par->metromem_desc->mLDCMD0 = par->info->var.xres
- * par->info->var.yres;
- am200_enable_lcd_controller(par);
-}
-
-static void am200_free_irq(struct fb_info *info)
-{
- free_irq(IRQ_GPIO(RDY_GPIO_PIN), info);
-}
-
-static irqreturn_t am200_handle_irq(int irq, void *dev_id)
-{
- struct fb_info *info = dev_id;
- struct metronomefb_par *par = info->par;
-
- wake_up_interruptible(&par->waitq);
- return IRQ_HANDLED;
-}
-
-static int am200_setup_irq(struct fb_info *info)
-{
- int retval;
-
- retval = request_irq(IRQ_GPIO(RDY_GPIO_PIN), am200_handle_irq,
- IRQF_DISABLED, "AM200", info);
- if (retval) {
- printk(KERN_ERR "am200epd: request_irq failed: %d\n", retval);
- return retval;
- }
-
- return set_irq_type(IRQ_GPIO(RDY_GPIO_PIN), IRQ_TYPE_EDGE_FALLING);
-}
-
-static void am200_set_rst(struct metronomefb_par *par, int state)
-{
- am200_set_gpio_output(RST_GPIO_PIN, state);
-}
-
-static void am200_set_stdby(struct metronomefb_par *par, int state)
-{
- am200_set_gpio_output(STDBY_GPIO_PIN, state);
-}
-
-static int am200_wait_event(struct metronomefb_par *par)
-{
- return wait_event_timeout(par->waitq, (GPLR1 & 0x01), HZ);
-}
-
-static int am200_wait_event_intr(struct metronomefb_par *par)
-{
- return wait_event_interruptible_timeout(par->waitq, (GPLR1 & 0x01), HZ);
-}
-
-static struct metronome_board am200_board = {
- .owner = THIS_MODULE,
- .free_irq = am200_free_irq,
- .setup_irq = am200_setup_irq,
- .init_gpio_regs = am200_init_gpio_regs,
- .init_lcdc_regs = am200_init_lcdc_regs,
- .post_dma_setup = am200_post_dma_setup,
- .set_rst = am200_set_rst,
- .set_stdby = am200_set_stdby,
- .met_wait_event = am200_wait_event,
- .met_wait_event_intr = am200_wait_event_intr,
-};
-
-static struct platform_device *am200_device;
-
-static int __init am200_init(void)
-{
- int ret;
-
- /* request our platform independent driver */
- request_module("metronomefb");
-
- am200_device = platform_device_alloc("metronomefb", -1);
- if (!am200_device)
- return -ENOMEM;
-
- platform_device_add_data(am200_device, &am200_board,
- sizeof(am200_board));
-
- /* this _add binds metronomefb to am200. metronomefb refcounts am200 */
- ret = platform_device_add(am200_device);
-
- if (ret)
- platform_device_put(am200_device);
-
- return ret;
-}
-
-static void __exit am200_exit(void)
-{
- platform_device_unregister(am200_device);
-}
-
-module_init(am200_init);
-module_exit(am200_exit);
-
-MODULE_DESCRIPTION("board driver for am200 metronome epd kit");
-MODULE_AUTHOR("Jaya Kumar");
-MODULE_LICENSE("GPL");
diff --git a/drivers/video/metronomefb.c b/drivers/video/metronomefb.c
index cc4c038a1b3f..afeed0611e3e 100644
--- a/drivers/video/metronomefb.c
+++ b/drivers/video/metronomefb.c
@@ -40,29 +40,63 @@
#include <asm/unaligned.h>
-
-#define DEBUG 1
-#ifdef DEBUG
-#define DPRINTK(f, a...) printk(KERN_DEBUG "%s: " f, __func__ , ## a)
-#else
-#define DPRINTK(f, a...)
-#endif
-
-
/* Display specific information */
#define DPY_W 832
#define DPY_H 622
+static int user_wfm_size;
+
/* 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 struct epd_frame epd_frame_table[] = {
{
- .fw = 832,
- .fh = 622
+ .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,
},
};
@@ -134,9 +168,8 @@ static u16 calc_img_cksum(u16 *start, int length)
}
/* here we decode the incoming waveform file and populate metromem */
-#define EXP_WFORM_SIZE 47001
-static int load_waveform(u8 *mem, size_t size, u8 *metromem, int m, int t,
- u8 *frame_count)
+static int __devinit load_waveform(u8 *mem, size_t size, int m, int t,
+ struct metronomefb_par *par)
{
int tta;
int wmta;
@@ -148,26 +181,31 @@ static int load_waveform(u8 *mem, size_t size, u8 *metromem, int m, int t,
int wfm_idx, owfm_idx;
int mem_idx = 0;
struct waveform_hdr *wfm_hdr;
+ u8 *metromem = par->metromem_wfm;
+ struct device *dev = par->info->dev;
- if (size != EXP_WFORM_SIZE) {
- printk(KERN_ERR "Error: unexpected size %d != %d\n", size,
- EXP_WFORM_SIZE);
+ if (user_wfm_size)
+ epd_frame_table[par->dt].wfm_size = user_wfm_size;
+
+ if (size != epd_frame_table[par->dt].wfm_size) {
+ dev_err(dev, "Error: unexpected size %d != %d\n", size,
+ epd_frame_table[par->dt].wfm_size);
return -EINVAL;
}
wfm_hdr = (struct waveform_hdr *) mem;
if (wfm_hdr->fvsn != 1) {
- printk(KERN_ERR "Error: bad fvsn %x\n", wfm_hdr->fvsn);
+ dev_err(dev, "Error: bad fvsn %x\n", wfm_hdr->fvsn);
return -EINVAL;
}
if (wfm_hdr->luts != 0) {
- printk(KERN_ERR "Error: bad luts %x\n", wfm_hdr->luts);
+ 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) {
- printk(KERN_ERR "Error: bad cksum %x != %x\n", cksum,
+ dev_err(dev, "Error: bad cksum %x != %x\n", cksum,
wfm_hdr->wfm_cs);
return -EINVAL;
}
@@ -175,7 +213,7 @@ static int load_waveform(u8 *mem, size_t size, u8 *metromem, int m, int t,
wfm_hdr->trc += 1;
for (i = 0; i < 5; i++) {
if (*(wfm_hdr->stuff2a + i) != 0) {
- printk(KERN_ERR "Error: unexpected value in padding\n");
+ dev_err(dev, "Error: unexpected value in padding\n");
return -EINVAL;
}
}
@@ -200,7 +238,7 @@ static int load_waveform(u8 *mem, size_t size, u8 *metromem, int m, int t,
return -EINVAL;
cksum = calc_cksum(sizeof(*wfm_hdr), cksum_idx, mem);
if (cksum != mem[cksum_idx]) {
- printk(KERN_ERR "Error: bad temperature range table cksum"
+ dev_err(dev, "Error: bad temperature range table cksum"
" %x != %x\n", cksum, mem[cksum_idx]);
return -EINVAL;
}
@@ -212,7 +250,7 @@ static int load_waveform(u8 *mem, size_t size, u8 *metromem, int m, int t,
return -EINVAL;
cksum = calc_cksum(cksum_idx - 3, cksum_idx, mem);
if (cksum != mem[cksum_idx]) {
- printk(KERN_ERR "Error: bad mode table address cksum"
+ dev_err(dev, "Error: bad mode table address cksum"
" %x != %x\n", cksum, mem[cksum_idx]);
return -EINVAL;
}
@@ -224,7 +262,7 @@ static int load_waveform(u8 *mem, size_t size, u8 *metromem, int m, int t,
return -EINVAL;
cksum = calc_cksum(cksum_idx - 3, cksum_idx, mem);
if (cksum != mem[cksum_idx]) {
- printk(KERN_ERR "Error: bad temperature table address cksum"
+ dev_err(dev, "Error: bad temperature table address cksum"
" %x != %x\n", cksum, mem[cksum_idx]);
return -EINVAL;
}
@@ -259,11 +297,11 @@ static int load_waveform(u8 *mem, size_t size, u8 *metromem, int m, int t,
return -EINVAL;
cksum = calc_cksum(owfm_idx, cksum_idx, mem);
if (cksum != mem[cksum_idx]) {
- printk(KERN_ERR "Error: bad waveform data cksum"
+ dev_err(dev, "Error: bad waveform data cksum"
" %x != %x\n", cksum, mem[cksum_idx]);
return -EINVAL;
}
- *frame_count = (mem_idx/64);
+ par->frame_count = (mem_idx/64);
return 0;
}
@@ -274,15 +312,12 @@ static int metronome_display_cmd(struct metronomefb_par *par)
u16 cs;
u16 opcode;
static u8 borderval;
- u8 *ptr;
/* 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 */
- ptr = par->metromem;
-
if (par->metromem_cmd->opcode == 0xCC40)
opcode = cs = 0xCC41;
else
@@ -335,44 +370,17 @@ static int __devinit metronome_powerup_cmd(struct metronomefb_par *par)
static int __devinit metronome_config_cmd(struct metronomefb_par *par)
{
- int i;
- u16 cs;
-
/* 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
- so we just set cs here and set the opcode at the end */
-
- cs = 0xCC10;
-
- /* set the 12 args ( 8 bytes ) for config. see spec for meanings */
- i = 0;
- par->metromem_cmd->args[i] = 15 /* sdlew */
- | 2 << 8 /* sdosz */
- | 0 << 11 /* sdor */
- | 0 << 12 /* sdces */
- | 0 << 15; /* sdcer */
- cs += par->metromem_cmd->args[i++];
-
- par->metromem_cmd->args[i] = 42 /* gdspl */
- | 1 << 8 /* gdr1 */
- | 1 << 9 /* sdshr */
- | 0 << 15; /* gdspp */
- cs += par->metromem_cmd->args[i++];
-
- par->metromem_cmd->args[i] = 18 /* gdspw */
- | 0 << 15; /* dispc */
- cs += par->metromem_cmd->args[i++];
-
- par->metromem_cmd->args[i] = 599 /* vdlc */
- | 0 << 11 /* dsi */
- | 0 << 12; /* dsic */
- cs += par->metromem_cmd->args[i++];
+ will try parse the command before we've set it all up */
+ memcpy(par->metromem_cmd->args, epd_frame_table[par->dt].config,
+ sizeof(epd_frame_table[par->dt].config));
/* the rest are 0 */
- memset((u8 *) (par->metromem_cmd->args + i), 0, (32-i)*2);
+ memset((u8 *) (par->metromem_cmd->args + 4), 0, (32-4)*2);
- par->metromem_cmd->csum = cs;
+ 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);
@@ -408,12 +416,9 @@ static int __devinit metronome_init_regs(struct metronomefb_par *par)
{
int res;
- par->board->init_gpio_regs(par);
-
- par->board->init_lcdc_regs(par);
-
- /* now that lcd is setup, setup dma descriptor */
- par->board->post_dma_setup(par);
+ res = par->board->setup_io(par);
+ if (res)
+ return res;
res = metronome_powerup_cmd(par);
if (res)
@@ -430,16 +435,16 @@ static int __devinit metronome_init_regs(struct metronomefb_par *par)
static void metronomefb_dpy_update(struct metronomefb_par *par)
{
+ int fbsize;
u16 cksum;
unsigned char *buf = (unsigned char __force *)par->info->screen_base;
+ fbsize = par->info->fix.smem_len;
/* copy from vm to metromem */
- memcpy(par->metromem_img, buf, DPY_W*DPY_H);
+ memcpy(par->metromem_img, buf, fbsize);
- cksum = calc_img_cksum((u16 *) par->metromem_img,
- (epd_frame_table[0].fw * DPY_H)/2);
- *((u16 *)(par->metromem_img) +
- (epd_frame_table[0].fw * DPY_H)/2) = cksum;
+ cksum = calc_img_cksum((u16 *) par->metromem_img, fbsize/2);
+ *((u16 *)(par->metromem_img) + fbsize/2) = cksum;
metronome_display_cmd(par);
}
@@ -574,8 +579,10 @@ static int __devinit metronomefb_probe(struct platform_device *dev)
unsigned char *videomemory;
struct metronomefb_par *par;
const struct firmware *fw_entry;
- int cmd_size, wfm_size, img_size, padding_size, totalsize;
int i;
+ int panel_type;
+ int fw, fh;
+ int epd_dt_index;
/* pick up board specific routines */
board = dev->dev.platform_data;
@@ -586,96 +593,108 @@ static int __devinit metronomefb_probe(struct platform_device *dev)
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 */
+ 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 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;
- videomemorysize = (DPY_W*DPY_H);
+ /* 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)
- return -ENOMEM;
+ goto err_fb_rel;
memset(videomemory, 0, videomemorysize);
- info = framebuffer_alloc(sizeof(struct metronomefb_par), &dev->dev);
- if (!info)
- goto err_vfree;
-
info->screen_base = (char __force __iomem *)videomemory;
info->fbops = &metronomefb_ops;
+ metronomefb_fix.line_length = fw;
+ metronomefb_var.xres = fw;
+ metronomefb_var.yres = fh;
+ metronomefb_var.xres_virtual = fw;
+ metronomefb_var.yres_virtual = fh;
info->var = metronomefb_var;
info->fix = metronomefb_fix;
info->fix.smem_len = videomemorysize;
par = info->par;
par->info = info;
par->board = board;
+ par->dt = epd_dt_index;
init_waitqueue_head(&par->waitq);
/* this table caches per page csum values. */
par->csum_table = vmalloc(videomemorysize/PAGE_SIZE);
if (!par->csum_table)
+ goto err_vfree;
+
+ /* 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;
+ }
- /* the metromem buffer is divided as follows:
- command | CRC | padding
- 16kb waveform data | CRC | padding
- image data | CRC
- and an extra 256 bytes for dma descriptors
- eg: IW=832 IH=622 WS=128
- */
-
- cmd_size = 1 * epd_frame_table[0].fw;
- wfm_size = ((16*1024 + 2 + epd_frame_table[0].fw - 1)
- / epd_frame_table[0].fw) * epd_frame_table[0].fw;
- img_size = epd_frame_table[0].fh * epd_frame_table[0].fw;
- padding_size = 4 * epd_frame_table[0].fw;
- totalsize = cmd_size + wfm_size + img_size + padding_size;
- par->metromemsize = PAGE_ALIGN(totalsize + 256);
- DPRINTK("desired memory size = %d\n", par->metromemsize);
- dev->dev.coherent_dma_mask = 0xffffffffull;
- par->metromem = dma_alloc_writecombine(&dev->dev, par->metromemsize,
- &par->metromem_dma, GFP_KERNEL);
- if (!par->metromem) {
- printk(KERN_ERR
- "metronomefb: unable to allocate dma buffer\n");
- goto err_vfree;
+ /* 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;
- par->metromem_cmd = (struct metromem_cmd *) par->metromem;
- par->metromem_wfm = par->metromem + cmd_size;
- par->metromem_img = par->metromem + cmd_size + wfm_size;
- par->metromem_img_csum = (u16 *) (par->metromem_img +
- (epd_frame_table[0].fw * DPY_H));
- DPRINTK("img offset=0x%x\n", cmd_size + wfm_size);
- par->metromem_desc = (struct metromem_desc *) (par->metromem + cmd_size
- + wfm_size + img_size + padding_size);
- par->metromem_desc_dma = par->metromem_dma + cmd_size + wfm_size
- + img_size + padding_size;
/* 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) {
- printk(KERN_ERR "metronomefb: couldn't get waveform\n");
- goto err_dma_free;
+ dev_err(&dev->dev, "Failed to get waveform\n");
+ goto err_csum_table;
}
- retval = load_waveform((u8 *) fw_entry->data, fw_entry->size,
- par->metromem_wfm, 3, 31, &par->frame_count);
+ retval = load_waveform((u8 *) fw_entry->data, fw_entry->size, 3, 31,
+ par);
release_firmware(fw_entry);
if (retval < 0) {
- printk(KERN_ERR "metronomefb: couldn't process waveform\n");
- goto err_dma_free;
+ dev_err(&dev->dev, "Failed processing waveform\n");
+ goto err_csum_table;
}
if (board->setup_irq(info))
- goto err_dma_free;
+ goto err_csum_table;
retval = metronome_init_regs(par);
if (retval < 0)
@@ -688,8 +707,8 @@ static int __devinit metronomefb_probe(struct platform_device *dev)
retval = fb_alloc_cmap(&info->cmap, 8, 0);
if (retval < 0) {
- printk(KERN_ERR "Failed to allocate colormap\n");
- goto err_fb_rel;
+ dev_err(&dev->dev, "Failed to allocate colormap\n");
+ goto err_free_irq;
}
/* set cmap */
@@ -704,7 +723,7 @@ static int __devinit metronomefb_probe(struct platform_device *dev)
platform_set_drvdata(dev, info);
- printk(KERN_INFO
+ dev_dbg(&dev->dev,
"fb%d: Metronome frame buffer device, using %dK of video"
" memory\n", info->node, videomemorysize >> 10);
@@ -712,17 +731,15 @@ static int __devinit metronomefb_probe(struct platform_device *dev)
err_cmap:
fb_dealloc_cmap(&info->cmap);
-err_fb_rel:
- framebuffer_release(info);
err_free_irq:
- board->free_irq(info);
-err_dma_free:
- dma_free_writecombine(&dev->dev, par->metromemsize, par->metromem,
- par->metromem_dma);
+ board->cleanup(par);
err_csum_table:
vfree(par->csum_table);
err_vfree:
vfree(videomemory);
+err_fb_rel:
+ framebuffer_release(info);
+err:
module_put(board->owner);
return retval;
}
@@ -733,15 +750,15 @@ static int __devexit metronomefb_remove(struct platform_device *dev)
if (info) {
struct metronomefb_par *par = info->par;
+
+ unregister_framebuffer(info);
fb_deferred_io_cleanup(info);
- dma_free_writecombine(&dev->dev, par->metromemsize,
- par->metromem, par->metromem_dma);
fb_dealloc_cmap(&info->cmap);
+ par->board->cleanup(par);
vfree(par->csum_table);
- unregister_framebuffer(info);
vfree((void __force *)info->screen_base);
- par->board->free_irq(info);
module_put(par->board->owner);
+ dev_dbg(&dev->dev, "calling release\n");
framebuffer_release(info);
}
return 0;
@@ -766,6 +783,9 @@ static void __exit metronomefb_exit(void)
platform_driver_unregister(&metronomefb_driver);
}
+module_param(user_wfm_size, uint, 0);
+MODULE_PARM_DESC(user_wfm_size, "Set custom waveform size");
+
module_init(metronomefb_init);
module_exit(metronomefb_exit);
generated by cgit v1.2.3 (git 2.39.0) at 2024-12-20 11:24:08 +0300