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![Al Viro](/assets/img/avatar_default.png)
The only part of proc_dir_entry the code outside of fs/proc really cares about is PDE(inode)->data. Provide a helper for that; static inline for now, eventually will be moved to fs/proc, along with the knowledge of struct proc_dir_entry layout. Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
827 lines
20 KiB
C
827 lines
20 KiB
C
/*
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* Frame buffer driver for ADV7393/2 video encoder
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*
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* Copyright 2006-2009 Analog Devices Inc.
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* Licensed under the GPL-2 or late.
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*/
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/*
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* TODO: Remove Globals
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* TODO: Code Cleanup
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*/
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#define pr_fmt(fmt) DRIVER_NAME ": " fmt
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#include <linux/module.h>
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#include <linux/kernel.h>
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#include <linux/errno.h>
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#include <linux/string.h>
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#include <linux/mm.h>
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#include <linux/tty.h>
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#include <linux/slab.h>
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#include <linux/delay.h>
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#include <linux/fb.h>
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#include <linux/ioport.h>
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#include <linux/init.h>
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#include <linux/types.h>
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#include <linux/interrupt.h>
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#include <linux/sched.h>
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#include <asm/blackfin.h>
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#include <asm/irq.h>
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#include <asm/dma.h>
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#include <linux/uaccess.h>
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#include <linux/gpio.h>
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#include <asm/portmux.h>
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#include <linux/dma-mapping.h>
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#include <linux/proc_fs.h>
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#include <linux/platform_device.h>
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#include <linux/i2c.h>
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#include "bfin_adv7393fb.h"
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static int mode = VMODE;
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static int mem = VMEM;
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static int nocursor = 1;
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static const unsigned short ppi_pins[] = {
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P_PPI0_CLK, P_PPI0_FS1, P_PPI0_FS2,
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P_PPI0_D0, P_PPI0_D1, P_PPI0_D2, P_PPI0_D3,
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P_PPI0_D4, P_PPI0_D5, P_PPI0_D6, P_PPI0_D7,
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P_PPI0_D8, P_PPI0_D9, P_PPI0_D10, P_PPI0_D11,
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P_PPI0_D12, P_PPI0_D13, P_PPI0_D14, P_PPI0_D15,
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0
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};
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/*
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* card parameters
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*/
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static struct bfin_adv7393_fb_par {
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/* structure holding blackfin / adv7393 parameters when
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screen is blanked */
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struct {
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u8 Mode; /* ntsc/pal/? */
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} vga_state;
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atomic_t ref_count;
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} bfin_par;
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/* --------------------------------------------------------------------- */
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static struct fb_var_screeninfo bfin_adv7393_fb_defined = {
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.xres = 720,
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.yres = 480,
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.xres_virtual = 720,
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.yres_virtual = 480,
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.bits_per_pixel = 16,
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.activate = FB_ACTIVATE_TEST,
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.height = -1,
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.width = -1,
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.left_margin = 0,
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.right_margin = 0,
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.upper_margin = 0,
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.lower_margin = 0,
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.vmode = FB_VMODE_INTERLACED,
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.red = {11, 5, 0},
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.green = {5, 6, 0},
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.blue = {0, 5, 0},
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.transp = {0, 0, 0},
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};
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static struct fb_fix_screeninfo bfin_adv7393_fb_fix = {
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.id = "BFIN ADV7393",
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.smem_len = 720 * 480 * 2,
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.type = FB_TYPE_PACKED_PIXELS,
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.visual = FB_VISUAL_TRUECOLOR,
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.xpanstep = 0,
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.ypanstep = 0,
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.line_length = 720 * 2,
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.accel = FB_ACCEL_NONE
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};
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static struct fb_ops bfin_adv7393_fb_ops = {
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.owner = THIS_MODULE,
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.fb_open = bfin_adv7393_fb_open,
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.fb_release = bfin_adv7393_fb_release,
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.fb_check_var = bfin_adv7393_fb_check_var,
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.fb_pan_display = bfin_adv7393_fb_pan_display,
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.fb_blank = bfin_adv7393_fb_blank,
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.fb_fillrect = cfb_fillrect,
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.fb_copyarea = cfb_copyarea,
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.fb_imageblit = cfb_imageblit,
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.fb_cursor = bfin_adv7393_fb_cursor,
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.fb_setcolreg = bfin_adv7393_fb_setcolreg,
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};
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static int dma_desc_list(struct adv7393fb_device *fbdev, u16 arg)
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{
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if (arg == BUILD) { /* Build */
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fbdev->vb1 = l1_data_sram_zalloc(sizeof(struct dmasg));
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if (fbdev->vb1 == NULL)
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goto error;
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fbdev->av1 = l1_data_sram_zalloc(sizeof(struct dmasg));
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if (fbdev->av1 == NULL)
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goto error;
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fbdev->vb2 = l1_data_sram_zalloc(sizeof(struct dmasg));
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if (fbdev->vb2 == NULL)
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goto error;
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fbdev->av2 = l1_data_sram_zalloc(sizeof(struct dmasg));
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if (fbdev->av2 == NULL)
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goto error;
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/* Build linked DMA descriptor list */
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fbdev->vb1->next_desc_addr = fbdev->av1;
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fbdev->av1->next_desc_addr = fbdev->vb2;
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fbdev->vb2->next_desc_addr = fbdev->av2;
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fbdev->av2->next_desc_addr = fbdev->vb1;
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/* Save list head */
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fbdev->descriptor_list_head = fbdev->av2;
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/* Vertical Blanking Field 1 */
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fbdev->vb1->start_addr = VB_DUMMY_MEMORY_SOURCE;
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fbdev->vb1->cfg = DMA_CFG_VAL;
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fbdev->vb1->x_count =
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fbdev->modes[mode].xres + fbdev->modes[mode].boeft_blank;
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fbdev->vb1->x_modify = 0;
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fbdev->vb1->y_count = fbdev->modes[mode].vb1_lines;
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fbdev->vb1->y_modify = 0;
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/* Active Video Field 1 */
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fbdev->av1->start_addr = (unsigned long)fbdev->fb_mem;
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fbdev->av1->cfg = DMA_CFG_VAL;
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fbdev->av1->x_count =
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fbdev->modes[mode].xres + fbdev->modes[mode].boeft_blank;
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fbdev->av1->x_modify = fbdev->modes[mode].bpp / 8;
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fbdev->av1->y_count = fbdev->modes[mode].a_lines;
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fbdev->av1->y_modify =
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(fbdev->modes[mode].xres - fbdev->modes[mode].boeft_blank +
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1) * (fbdev->modes[mode].bpp / 8);
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/* Vertical Blanking Field 2 */
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fbdev->vb2->start_addr = VB_DUMMY_MEMORY_SOURCE;
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fbdev->vb2->cfg = DMA_CFG_VAL;
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fbdev->vb2->x_count =
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fbdev->modes[mode].xres + fbdev->modes[mode].boeft_blank;
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fbdev->vb2->x_modify = 0;
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fbdev->vb2->y_count = fbdev->modes[mode].vb2_lines;
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fbdev->vb2->y_modify = 0;
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/* Active Video Field 2 */
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fbdev->av2->start_addr =
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(unsigned long)fbdev->fb_mem + fbdev->line_len;
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fbdev->av2->cfg = DMA_CFG_VAL;
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fbdev->av2->x_count =
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fbdev->modes[mode].xres + fbdev->modes[mode].boeft_blank;
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fbdev->av2->x_modify = (fbdev->modes[mode].bpp / 8);
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fbdev->av2->y_count = fbdev->modes[mode].a_lines;
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fbdev->av2->y_modify =
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(fbdev->modes[mode].xres - fbdev->modes[mode].boeft_blank +
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1) * (fbdev->modes[mode].bpp / 8);
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return 1;
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}
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error:
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l1_data_sram_free(fbdev->vb1);
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l1_data_sram_free(fbdev->av1);
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l1_data_sram_free(fbdev->vb2);
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l1_data_sram_free(fbdev->av2);
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return 0;
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}
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static int bfin_config_dma(struct adv7393fb_device *fbdev)
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{
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BUG_ON(!(fbdev->fb_mem));
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set_dma_x_count(CH_PPI, fbdev->descriptor_list_head->x_count);
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set_dma_x_modify(CH_PPI, fbdev->descriptor_list_head->x_modify);
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set_dma_y_count(CH_PPI, fbdev->descriptor_list_head->y_count);
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set_dma_y_modify(CH_PPI, fbdev->descriptor_list_head->y_modify);
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set_dma_start_addr(CH_PPI, fbdev->descriptor_list_head->start_addr);
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set_dma_next_desc_addr(CH_PPI,
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fbdev->descriptor_list_head->next_desc_addr);
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set_dma_config(CH_PPI, fbdev->descriptor_list_head->cfg);
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return 1;
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}
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static void bfin_disable_dma(void)
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{
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bfin_write_DMA0_CONFIG(bfin_read_DMA0_CONFIG() & ~DMAEN);
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}
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static void bfin_config_ppi(struct adv7393fb_device *fbdev)
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{
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if (ANOMALY_05000183) {
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bfin_write_TIMER2_CONFIG(WDTH_CAP);
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bfin_write_TIMER_ENABLE(TIMEN2);
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}
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bfin_write_PPI_CONTROL(0x381E);
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bfin_write_PPI_FRAME(fbdev->modes[mode].tot_lines);
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bfin_write_PPI_COUNT(fbdev->modes[mode].xres +
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fbdev->modes[mode].boeft_blank - 1);
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bfin_write_PPI_DELAY(fbdev->modes[mode].aoeft_blank - 1);
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}
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static void bfin_enable_ppi(void)
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{
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bfin_write_PPI_CONTROL(bfin_read_PPI_CONTROL() | PORT_EN);
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}
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static void bfin_disable_ppi(void)
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{
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bfin_write_PPI_CONTROL(bfin_read_PPI_CONTROL() & ~PORT_EN);
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}
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static inline int adv7393_write(struct i2c_client *client, u8 reg, u8 value)
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{
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return i2c_smbus_write_byte_data(client, reg, value);
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}
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static inline int adv7393_read(struct i2c_client *client, u8 reg)
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{
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return i2c_smbus_read_byte_data(client, reg);
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}
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static int
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adv7393_write_block(struct i2c_client *client,
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const u8 *data, unsigned int len)
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{
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int ret = -1;
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u8 reg;
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while (len >= 2) {
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reg = *data++;
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ret = adv7393_write(client, reg, *data++);
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if (ret < 0)
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break;
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len -= 2;
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}
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return ret;
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}
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static int adv7393_mode(struct i2c_client *client, u16 mode)
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{
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switch (mode) {
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case POWER_ON: /* ADV7393 Sleep mode OFF */
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adv7393_write(client, 0x00, 0x1E);
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break;
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case POWER_DOWN: /* ADV7393 Sleep mode ON */
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adv7393_write(client, 0x00, 0x1F);
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break;
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case BLANK_OFF: /* Pixel Data Valid */
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adv7393_write(client, 0x82, 0xCB);
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break;
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case BLANK_ON: /* Pixel Data Invalid */
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adv7393_write(client, 0x82, 0x8B);
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break;
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default:
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return -EINVAL;
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break;
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}
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return 0;
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}
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static irqreturn_t ppi_irq_error(int irq, void *dev_id)
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{
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struct adv7393fb_device *fbdev = (struct adv7393fb_device *)dev_id;
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u16 status = bfin_read_PPI_STATUS();
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pr_debug("%s: PPI Status = 0x%X\n", __func__, status);
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if (status) {
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bfin_disable_dma(); /* TODO: Check Sequence */
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bfin_disable_ppi();
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bfin_clear_PPI_STATUS();
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bfin_config_dma(fbdev);
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bfin_enable_ppi();
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}
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return IRQ_HANDLED;
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}
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static int proc_output(char *buf)
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{
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char *p = buf;
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p += sprintf(p,
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"Usage:\n"
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"echo 0x[REG][Value] > adv7393\n"
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"example: echo 0x1234 >adv7393\n"
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"writes 0x34 into Register 0x12\n");
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return p - buf;
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}
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static ssize_t
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adv7393_read_proc(struct file *file, char __user *buf,
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size_t size, loff_t *ppos)
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{
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static const char message[] = "Usage:\n"
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"echo 0x[REG][Value] > adv7393\n"
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"example: echo 0x1234 >adv7393\n"
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"writes 0x34 into Register 0x12\n";
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return simple_read_from_buffer(buf, size, ppos, message,
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sizeof(message));
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}
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static ssize_t
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adv7393_write_proc(struct file *file, const char __user * buffer,
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size_t count, loff_t *ppos)
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{
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struct adv7393fb_device *fbdev = PDE_DATA(file_inode(file));
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unsigned int val;
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int ret;
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ret = kstrtouint_from_user(buffer, count, 0, &val);
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if (ret)
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return -EFAULT;
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adv7393_write(fbdev->client, val >> 8, val & 0xff);
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return count;
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}
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static const struct file_operations fops = {
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.read = adv7393_read_proc,
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.write = adv7393_write_proc,
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.llseek = default_llseek,
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};
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static int bfin_adv7393_fb_probe(struct i2c_client *client,
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const struct i2c_device_id *id)
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{
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int ret = 0;
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struct proc_dir_entry *entry;
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int num_modes = ARRAY_SIZE(known_modes);
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struct adv7393fb_device *fbdev = NULL;
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if (mem > 2) {
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dev_err(&client->dev, "mem out of allowed range [1;2]\n");
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return -EINVAL;
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}
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if (mode > num_modes) {
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dev_err(&client->dev, "mode %d: not supported", mode);
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return -EFAULT;
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}
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fbdev = kzalloc(sizeof(*fbdev), GFP_KERNEL);
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if (!fbdev) {
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dev_err(&client->dev, "failed to allocate device private record");
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return -ENOMEM;
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}
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i2c_set_clientdata(client, fbdev);
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fbdev->modes = known_modes;
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fbdev->client = client;
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|
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fbdev->fb_len =
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mem * fbdev->modes[mode].xres * fbdev->modes[mode].xres *
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(fbdev->modes[mode].bpp / 8);
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|
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fbdev->line_len =
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fbdev->modes[mode].xres * (fbdev->modes[mode].bpp / 8);
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|
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/* Workaround "PPI Does Not Start Properly In Specific Mode" */
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if (ANOMALY_05000400) {
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ret = gpio_request_one(P_IDENT(P_PPI0_FS3), GPIOF_OUT_INIT_LOW,
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"PPI0_FS3")
|
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if (ret) {
|
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dev_err(&client->dev, "PPI0_FS3 GPIO request failed\n");
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ret = -EBUSY;
|
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goto free_fbdev;
|
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}
|
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}
|
|
|
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if (peripheral_request_list(ppi_pins, DRIVER_NAME)) {
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dev_err(&client->dev, "requesting PPI peripheral failed\n");
|
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ret = -EFAULT;
|
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goto free_gpio;
|
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}
|
|
|
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fbdev->fb_mem =
|
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dma_alloc_coherent(NULL, fbdev->fb_len, &fbdev->dma_handle,
|
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GFP_KERNEL);
|
|
|
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if (NULL == fbdev->fb_mem) {
|
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dev_err(&client->dev, "couldn't allocate dma buffer (%d bytes)\n",
|
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(u32) fbdev->fb_len);
|
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ret = -ENOMEM;
|
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goto free_ppi_pins;
|
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}
|
|
|
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fbdev->info.screen_base = (void *)fbdev->fb_mem;
|
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bfin_adv7393_fb_fix.smem_start = (int)fbdev->fb_mem;
|
|
|
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bfin_adv7393_fb_fix.smem_len = fbdev->fb_len;
|
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bfin_adv7393_fb_fix.line_length = fbdev->line_len;
|
|
|
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if (mem > 1)
|
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bfin_adv7393_fb_fix.ypanstep = 1;
|
|
|
|
bfin_adv7393_fb_defined.red.length = 5;
|
|
bfin_adv7393_fb_defined.green.length = 6;
|
|
bfin_adv7393_fb_defined.blue.length = 5;
|
|
|
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bfin_adv7393_fb_defined.xres = fbdev->modes[mode].xres;
|
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bfin_adv7393_fb_defined.yres = fbdev->modes[mode].yres;
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bfin_adv7393_fb_defined.xres_virtual = fbdev->modes[mode].xres;
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bfin_adv7393_fb_defined.yres_virtual = mem * fbdev->modes[mode].yres;
|
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bfin_adv7393_fb_defined.bits_per_pixel = fbdev->modes[mode].bpp;
|
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|
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fbdev->info.fbops = &bfin_adv7393_fb_ops;
|
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fbdev->info.var = bfin_adv7393_fb_defined;
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fbdev->info.fix = bfin_adv7393_fb_fix;
|
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fbdev->info.par = &bfin_par;
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fbdev->info.flags = FBINFO_DEFAULT;
|
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|
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fbdev->info.pseudo_palette = kzalloc(sizeof(u32) * 16, GFP_KERNEL);
|
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if (!fbdev->info.pseudo_palette) {
|
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dev_err(&client->dev, "failed to allocate pseudo_palette\n");
|
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ret = -ENOMEM;
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goto free_fb_mem;
|
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}
|
|
|
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if (fb_alloc_cmap(&fbdev->info.cmap, BFIN_LCD_NBR_PALETTE_ENTRIES, 0) < 0) {
|
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dev_err(&client->dev, "failed to allocate colormap (%d entries)\n",
|
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BFIN_LCD_NBR_PALETTE_ENTRIES);
|
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ret = -EFAULT;
|
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goto free_palette;
|
|
}
|
|
|
|
if (request_dma(CH_PPI, "BF5xx_PPI_DMA") < 0) {
|
|
dev_err(&client->dev, "unable to request PPI DMA\n");
|
|
ret = -EFAULT;
|
|
goto free_cmap;
|
|
}
|
|
|
|
if (request_irq(IRQ_PPI_ERROR, ppi_irq_error, 0,
|
|
"PPI ERROR", fbdev) < 0) {
|
|
dev_err(&client->dev, "unable to request PPI ERROR IRQ\n");
|
|
ret = -EFAULT;
|
|
goto free_ch_ppi;
|
|
}
|
|
|
|
fbdev->open = 0;
|
|
|
|
ret = adv7393_write_block(client, fbdev->modes[mode].adv7393_i2c_initd,
|
|
fbdev->modes[mode].adv7393_i2c_initd_len);
|
|
|
|
if (ret) {
|
|
dev_err(&client->dev, "i2c attach: init error\n");
|
|
goto free_irq_ppi;
|
|
}
|
|
|
|
|
|
if (register_framebuffer(&fbdev->info) < 0) {
|
|
dev_err(&client->dev, "unable to register framebuffer\n");
|
|
ret = -EFAULT;
|
|
goto free_irq_ppi;
|
|
}
|
|
|
|
dev_info(&client->dev, "fb%d: %s frame buffer device\n",
|
|
fbdev->info.node, fbdev->info.fix.id);
|
|
dev_info(&client->dev, "fb memory address : 0x%p\n", fbdev->fb_mem);
|
|
|
|
entry = proc_create_data("driver/adv7393", 0, NULL, &fops, fbdev);
|
|
if (!entry) {
|
|
dev_err(&client->dev, "unable to create /proc entry\n");
|
|
ret = -EFAULT;
|
|
goto free_fb;
|
|
}
|
|
return 0;
|
|
|
|
free_fb:
|
|
unregister_framebuffer(&fbdev->info);
|
|
free_irq_ppi:
|
|
free_irq(IRQ_PPI_ERROR, fbdev);
|
|
free_ch_ppi:
|
|
free_dma(CH_PPI);
|
|
free_cmap:
|
|
fb_dealloc_cmap(&fbdev->info.cmap);
|
|
free_palette:
|
|
kfree(fbdev->info.pseudo_palette);
|
|
free_fb_mem:
|
|
dma_free_coherent(NULL, fbdev->fb_len, fbdev->fb_mem,
|
|
fbdev->dma_handle);
|
|
free_ppi_pins:
|
|
peripheral_free_list(ppi_pins);
|
|
free_gpio:
|
|
if (ANOMALY_05000400)
|
|
gpio_free(P_IDENT(P_PPI0_FS3));
|
|
free_fbdev:
|
|
kfree(fbdev);
|
|
|
|
return ret;
|
|
}
|
|
|
|
static int bfin_adv7393_fb_open(struct fb_info *info, int user)
|
|
{
|
|
struct adv7393fb_device *fbdev = to_adv7393fb_device(info);
|
|
|
|
fbdev->info.screen_base = (void *)fbdev->fb_mem;
|
|
if (!fbdev->info.screen_base) {
|
|
dev_err(&fbdev->client->dev, "unable to map device\n");
|
|
return -ENOMEM;
|
|
}
|
|
|
|
fbdev->open = 1;
|
|
dma_desc_list(fbdev, BUILD);
|
|
adv7393_mode(fbdev->client, BLANK_OFF);
|
|
bfin_config_ppi(fbdev);
|
|
bfin_config_dma(fbdev);
|
|
bfin_enable_ppi();
|
|
|
|
return 0;
|
|
}
|
|
|
|
static int bfin_adv7393_fb_release(struct fb_info *info, int user)
|
|
{
|
|
struct adv7393fb_device *fbdev = to_adv7393fb_device(info);
|
|
|
|
adv7393_mode(fbdev->client, BLANK_ON);
|
|
bfin_disable_dma();
|
|
bfin_disable_ppi();
|
|
dma_desc_list(fbdev, DESTRUCT);
|
|
fbdev->open = 0;
|
|
return 0;
|
|
}
|
|
|
|
static int
|
|
bfin_adv7393_fb_check_var(struct fb_var_screeninfo *var, struct fb_info *info)
|
|
{
|
|
|
|
switch (var->bits_per_pixel) {
|
|
case 16:/* DIRECTCOLOUR, 64k */
|
|
var->red.offset = info->var.red.offset;
|
|
var->green.offset = info->var.green.offset;
|
|
var->blue.offset = info->var.blue.offset;
|
|
var->red.length = info->var.red.length;
|
|
var->green.length = info->var.green.length;
|
|
var->blue.length = info->var.blue.length;
|
|
var->transp.offset = 0;
|
|
var->transp.length = 0;
|
|
var->transp.msb_right = 0;
|
|
var->red.msb_right = 0;
|
|
var->green.msb_right = 0;
|
|
var->blue.msb_right = 0;
|
|
break;
|
|
default:
|
|
pr_debug("%s: depth not supported: %u BPP\n", __func__,
|
|
var->bits_per_pixel);
|
|
return -EINVAL;
|
|
}
|
|
|
|
if (info->var.xres != var->xres ||
|
|
info->var.yres != var->yres ||
|
|
info->var.xres_virtual != var->xres_virtual ||
|
|
info->var.yres_virtual != var->yres_virtual) {
|
|
pr_debug("%s: Resolution not supported: X%u x Y%u\n",
|
|
__func__, var->xres, var->yres);
|
|
return -EINVAL;
|
|
}
|
|
|
|
/*
|
|
* Memory limit
|
|
*/
|
|
|
|
if ((info->fix.line_length * var->yres_virtual) > info->fix.smem_len) {
|
|
pr_debug("%s: Memory Limit requested yres_virtual = %u\n",
|
|
__func__, var->yres_virtual);
|
|
return -ENOMEM;
|
|
}
|
|
|
|
return 0;
|
|
}
|
|
|
|
static int
|
|
bfin_adv7393_fb_pan_display(struct fb_var_screeninfo *var, struct fb_info *info)
|
|
{
|
|
int dy;
|
|
u32 dmaaddr;
|
|
struct adv7393fb_device *fbdev = to_adv7393fb_device(info);
|
|
|
|
if (!var || !info)
|
|
return -EINVAL;
|
|
|
|
if (var->xoffset - info->var.xoffset) {
|
|
/* No support for X panning for now! */
|
|
return -EINVAL;
|
|
}
|
|
dy = var->yoffset - info->var.yoffset;
|
|
|
|
if (dy) {
|
|
pr_debug("%s: Panning screen of %d lines\n", __func__, dy);
|
|
|
|
dmaaddr = fbdev->av1->start_addr;
|
|
dmaaddr += (info->fix.line_length * dy);
|
|
/* TODO: Wait for current frame to finished */
|
|
|
|
fbdev->av1->start_addr = (unsigned long)dmaaddr;
|
|
fbdev->av2->start_addr = (unsigned long)dmaaddr + fbdev->line_len;
|
|
}
|
|
|
|
return 0;
|
|
|
|
}
|
|
|
|
/* 0 unblank, 1 blank, 2 no vsync, 3 no hsync, 4 off */
|
|
static int bfin_adv7393_fb_blank(int blank, struct fb_info *info)
|
|
{
|
|
struct adv7393fb_device *fbdev = to_adv7393fb_device(info);
|
|
|
|
switch (blank) {
|
|
|
|
case VESA_NO_BLANKING:
|
|
/* Turn on panel */
|
|
adv7393_mode(fbdev->client, BLANK_OFF);
|
|
break;
|
|
|
|
case VESA_VSYNC_SUSPEND:
|
|
case VESA_HSYNC_SUSPEND:
|
|
case VESA_POWERDOWN:
|
|
/* Turn off panel */
|
|
adv7393_mode(fbdev->client, BLANK_ON);
|
|
break;
|
|
|
|
default:
|
|
return -EINVAL;
|
|
break;
|
|
}
|
|
return 0;
|
|
}
|
|
|
|
int bfin_adv7393_fb_cursor(struct fb_info *info, struct fb_cursor *cursor)
|
|
{
|
|
if (nocursor)
|
|
return 0;
|
|
else
|
|
return -EINVAL; /* just to force soft_cursor() call */
|
|
}
|
|
|
|
static int bfin_adv7393_fb_setcolreg(u_int regno, u_int red, u_int green,
|
|
u_int blue, u_int transp,
|
|
struct fb_info *info)
|
|
{
|
|
if (regno >= BFIN_LCD_NBR_PALETTE_ENTRIES)
|
|
return -EINVAL;
|
|
|
|
if (info->var.grayscale)
|
|
/* grayscale = 0.30*R + 0.59*G + 0.11*B */
|
|
red = green = blue = (red * 77 + green * 151 + blue * 28) >> 8;
|
|
|
|
if (info->fix.visual == FB_VISUAL_TRUECOLOR) {
|
|
u32 value;
|
|
/* Place color in the pseudopalette */
|
|
if (regno > 16)
|
|
return -EINVAL;
|
|
|
|
red >>= (16 - info->var.red.length);
|
|
green >>= (16 - info->var.green.length);
|
|
blue >>= (16 - info->var.blue.length);
|
|
|
|
value = (red << info->var.red.offset) |
|
|
(green << info->var.green.offset)|
|
|
(blue << info->var.blue.offset);
|
|
value &= 0xFFFF;
|
|
|
|
((u32 *) (info->pseudo_palette))[regno] = value;
|
|
}
|
|
|
|
return 0;
|
|
}
|
|
|
|
static int bfin_adv7393_fb_remove(struct i2c_client *client)
|
|
{
|
|
struct adv7393fb_device *fbdev = i2c_get_clientdata(client);
|
|
|
|
adv7393_mode(client, POWER_DOWN);
|
|
|
|
if (fbdev->fb_mem)
|
|
dma_free_coherent(NULL, fbdev->fb_len, fbdev->fb_mem, fbdev->dma_handle);
|
|
free_dma(CH_PPI);
|
|
free_irq(IRQ_PPI_ERROR, fbdev);
|
|
unregister_framebuffer(&fbdev->info);
|
|
remove_proc_entry("driver/adv7393", NULL);
|
|
fb_dealloc_cmap(&fbdev->info.cmap);
|
|
kfree(fbdev->info.pseudo_palette);
|
|
|
|
if (ANOMALY_05000400)
|
|
gpio_free(P_IDENT(P_PPI0_FS3)); /* FS3 */
|
|
peripheral_free_list(ppi_pins);
|
|
kfree(fbdev);
|
|
|
|
return 0;
|
|
}
|
|
|
|
#ifdef CONFIG_PM
|
|
static int bfin_adv7393_fb_suspend(struct device *dev)
|
|
{
|
|
struct adv7393fb_device *fbdev = dev_get_drvdata(dev);
|
|
|
|
if (fbdev->open) {
|
|
bfin_disable_dma();
|
|
bfin_disable_ppi();
|
|
dma_desc_list(fbdev, DESTRUCT);
|
|
}
|
|
adv7393_mode(fbdev->client, POWER_DOWN);
|
|
|
|
return 0;
|
|
}
|
|
|
|
static int bfin_adv7393_fb_resume(struct device *dev)
|
|
{
|
|
struct adv7393fb_device *fbdev = dev_get_drvdata(dev);
|
|
|
|
adv7393_mode(fbdev->client, POWER_ON);
|
|
|
|
if (fbdev->open) {
|
|
dma_desc_list(fbdev, BUILD);
|
|
bfin_config_ppi(fbdev);
|
|
bfin_config_dma(fbdev);
|
|
bfin_enable_ppi();
|
|
}
|
|
|
|
return 0;
|
|
}
|
|
|
|
static const struct dev_pm_ops bfin_adv7393_dev_pm_ops = {
|
|
.suspend = bfin_adv7393_fb_suspend,
|
|
.resume = bfin_adv7393_fb_resume,
|
|
};
|
|
#endif
|
|
|
|
static const struct i2c_device_id bfin_adv7393_id[] = {
|
|
{DRIVER_NAME, 0},
|
|
{}
|
|
};
|
|
|
|
MODULE_DEVICE_TABLE(i2c, bfin_adv7393_id);
|
|
|
|
static struct i2c_driver bfin_adv7393_fb_driver = {
|
|
.driver = {
|
|
.name = DRIVER_NAME,
|
|
#ifdef CONFIG_PM
|
|
.pm = &bfin_adv7393_dev_pm_ops,
|
|
#endif
|
|
},
|
|
.probe = bfin_adv7393_fb_probe,
|
|
.remove = bfin_adv7393_fb_remove,
|
|
.id_table = bfin_adv7393_id,
|
|
};
|
|
|
|
static int __init bfin_adv7393_fb_driver_init(void)
|
|
{
|
|
#if defined(CONFIG_I2C_BLACKFIN_TWI) || defined(CONFIG_I2C_BLACKFIN_TWI_MODULE)
|
|
request_module("i2c-bfin-twi");
|
|
#else
|
|
request_module("i2c-gpio");
|
|
#endif
|
|
|
|
return i2c_add_driver(&bfin_adv7393_fb_driver);
|
|
}
|
|
module_init(bfin_adv7393_fb_driver_init);
|
|
|
|
static void __exit bfin_adv7393_fb_driver_cleanup(void)
|
|
{
|
|
i2c_del_driver(&bfin_adv7393_fb_driver);
|
|
}
|
|
module_exit(bfin_adv7393_fb_driver_cleanup);
|
|
|
|
MODULE_LICENSE("GPL");
|
|
MODULE_AUTHOR("Michael Hennerich <hennerich@blackfin.uclinux.org>");
|
|
MODULE_DESCRIPTION("Frame buffer driver for ADV7393/2 Video Encoder");
|
|
|
|
module_param(mode, int, 0);
|
|
MODULE_PARM_DESC(mode,
|
|
"Video Mode (0=NTSC,1=PAL,2=NTSC 640x480,3=PAL 640x480,4=NTSC YCbCr input,5=PAL YCbCr input)");
|
|
|
|
module_param(mem, int, 0);
|
|
MODULE_PARM_DESC(mem,
|
|
"Size of frame buffer memory 1=Single 2=Double Size (allows y-panning / frame stacking)");
|
|
|
|
module_param(nocursor, int, 0644);
|
|
MODULE_PARM_DESC(nocursor, "cursor enable/disable");
|