diff options
author | Tomi Valkeinen <tomi.valkeinen@ti.com> | 2014-02-13 15:31:38 +0200 |
---|---|---|
committer | Tomi Valkeinen <tomi.valkeinen@ti.com> | 2014-04-17 08:10:19 +0300 |
commit | f7018c21350204c4cf628462f229d44d03545254 (patch) | |
tree | 408787177164cf51cc06f7aabdb04fcff8d2b6aa /drivers/video/fsl-diu-fb.c | |
parent | c26ef3eb3c11274bad1b64498d0a134f85755250 (diff) | |
download | linux-f7018c21350204c4cf628462f229d44d03545254.tar.bz2 |
video: move fbdev to drivers/video/fbdev
The drivers/video directory is a mess. It contains generic video related
files, directories for backlight, console, linux logo, lots of fbdev
device drivers, fbdev framework files.
Make some order into the chaos by creating drivers/video/fbdev
directory, and move all fbdev related files there.
No functionality is changed, although I guess it is possible that some
subtle Makefile build order related issue could be created by this
patch.
Signed-off-by: Tomi Valkeinen <tomi.valkeinen@ti.com>
Acked-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Acked-by: Geert Uytterhoeven <geert@linux-m68k.org>
Acked-by: Rob Clark <robdclark@gmail.com>
Acked-by: Jingoo Han <jg1.han@samsung.com>
Acked-by: Daniel Vetter <daniel.vetter@ffwll.ch>
Diffstat (limited to 'drivers/video/fsl-diu-fb.c')
-rw-r--r-- | drivers/video/fsl-diu-fb.c | 1994 |
1 files changed, 0 insertions, 1994 deletions
diff --git a/drivers/video/fsl-diu-fb.c b/drivers/video/fsl-diu-fb.c deleted file mode 100644 index e8758b9c3bcc..000000000000 --- a/drivers/video/fsl-diu-fb.c +++ /dev/null @@ -1,1994 +0,0 @@ -/* - * Copyright 2008 Freescale Semiconductor, Inc. All Rights Reserved. - * - * Freescale DIU Frame Buffer device driver - * - * Authors: Hongjun Chen <hong-jun.chen@freescale.com> - * Paul Widmer <paul.widmer@freescale.com> - * Srikanth Srinivasan <srikanth.srinivasan@freescale.com> - * York Sun <yorksun@freescale.com> - * - * Based on imxfb.c Copyright (C) 2004 S.Hauer, Pengutronix - * - * This program is free software; you can redistribute it and/or modify it - * under the terms of the GNU General Public License as published by the - * Free Software Foundation; either version 2 of the License, or (at your - * option) any later version. - * - */ - -#include <linux/module.h> -#include <linux/kernel.h> -#include <linux/errno.h> -#include <linux/string.h> -#include <linux/slab.h> -#include <linux/fb.h> -#include <linux/init.h> -#include <linux/dma-mapping.h> -#include <linux/platform_device.h> -#include <linux/interrupt.h> -#include <linux/clk.h> -#include <linux/uaccess.h> -#include <linux/vmalloc.h> -#include <linux/spinlock.h> -#include <linux/of_address.h> -#include <linux/of_irq.h> - -#include <sysdev/fsl_soc.h> -#include <linux/fsl-diu-fb.h> -#include "edid.h" - -#define NUM_AOIS 5 /* 1 for plane 0, 2 for planes 1 & 2 each */ - -/* HW cursor parameters */ -#define MAX_CURS 32 - -/* INT_STATUS/INT_MASK field descriptions */ -#define INT_VSYNC 0x01 /* Vsync interrupt */ -#define INT_VSYNC_WB 0x02 /* Vsync interrupt for write back operation */ -#define INT_UNDRUN 0x04 /* Under run exception interrupt */ -#define INT_PARERR 0x08 /* Display parameters error interrupt */ -#define INT_LS_BF_VS 0x10 /* Lines before vsync. interrupt */ - -/* - * List of supported video modes - * - * The first entry is the default video mode. The remain entries are in - * order if increasing resolution and frequency. The 320x240-60 mode is - * the initial AOI for the second and third planes. - */ -static struct fb_videomode fsl_diu_mode_db[] = { - { - .refresh = 60, - .xres = 1024, - .yres = 768, - .pixclock = 15385, - .left_margin = 160, - .right_margin = 24, - .upper_margin = 29, - .lower_margin = 3, - .hsync_len = 136, - .vsync_len = 6, - .sync = FB_SYNC_COMP_HIGH_ACT | FB_SYNC_VERT_HIGH_ACT, - .vmode = FB_VMODE_NONINTERLACED - }, - { - .refresh = 60, - .xres = 320, - .yres = 240, - .pixclock = 79440, - .left_margin = 16, - .right_margin = 16, - .upper_margin = 16, - .lower_margin = 5, - .hsync_len = 48, - .vsync_len = 1, - .sync = FB_SYNC_COMP_HIGH_ACT | FB_SYNC_VERT_HIGH_ACT, - .vmode = FB_VMODE_NONINTERLACED - }, - { - .refresh = 60, - .xres = 640, - .yres = 480, - .pixclock = 39722, - .left_margin = 48, - .right_margin = 16, - .upper_margin = 33, - .lower_margin = 10, - .hsync_len = 96, - .vsync_len = 2, - .sync = FB_SYNC_COMP_HIGH_ACT | FB_SYNC_VERT_HIGH_ACT, - .vmode = FB_VMODE_NONINTERLACED - }, - { - .refresh = 72, - .xres = 640, - .yres = 480, - .pixclock = 32052, - .left_margin = 128, - .right_margin = 24, - .upper_margin = 28, - .lower_margin = 9, - .hsync_len = 40, - .vsync_len = 3, - .sync = FB_SYNC_COMP_HIGH_ACT | FB_SYNC_VERT_HIGH_ACT, - .vmode = FB_VMODE_NONINTERLACED - }, - { - .refresh = 75, - .xres = 640, - .yres = 480, - .pixclock = 31747, - .left_margin = 120, - .right_margin = 16, - .upper_margin = 16, - .lower_margin = 1, - .hsync_len = 64, - .vsync_len = 3, - .sync = FB_SYNC_COMP_HIGH_ACT | FB_SYNC_VERT_HIGH_ACT, - .vmode = FB_VMODE_NONINTERLACED - }, - { - .refresh = 90, - .xres = 640, - .yres = 480, - .pixclock = 25057, - .left_margin = 120, - .right_margin = 32, - .upper_margin = 14, - .lower_margin = 25, - .hsync_len = 40, - .vsync_len = 14, - .sync = FB_SYNC_COMP_HIGH_ACT | FB_SYNC_VERT_HIGH_ACT, - .vmode = FB_VMODE_NONINTERLACED - }, - { - .refresh = 100, - .xres = 640, - .yres = 480, - .pixclock = 22272, - .left_margin = 48, - .right_margin = 32, - .upper_margin = 17, - .lower_margin = 22, - .hsync_len = 128, - .vsync_len = 12, - .sync = FB_SYNC_COMP_HIGH_ACT | FB_SYNC_VERT_HIGH_ACT, - .vmode = FB_VMODE_NONINTERLACED - }, - { - .refresh = 60, - .xres = 800, - .yres = 480, - .pixclock = 33805, - .left_margin = 96, - .right_margin = 24, - .upper_margin = 10, - .lower_margin = 3, - .hsync_len = 72, - .vsync_len = 7, - .sync = FB_SYNC_COMP_HIGH_ACT | FB_SYNC_VERT_HIGH_ACT, - .vmode = FB_VMODE_NONINTERLACED - }, - { - .refresh = 60, - .xres = 800, - .yres = 600, - .pixclock = 25000, - .left_margin = 88, - .right_margin = 40, - .upper_margin = 23, - .lower_margin = 1, - .hsync_len = 128, - .vsync_len = 4, - .sync = FB_SYNC_COMP_HIGH_ACT | FB_SYNC_VERT_HIGH_ACT, - .vmode = FB_VMODE_NONINTERLACED - }, - { - .refresh = 60, - .xres = 854, - .yres = 480, - .pixclock = 31518, - .left_margin = 104, - .right_margin = 16, - .upper_margin = 13, - .lower_margin = 1, - .hsync_len = 88, - .vsync_len = 3, - .sync = FB_SYNC_COMP_HIGH_ACT | FB_SYNC_VERT_HIGH_ACT, - .vmode = FB_VMODE_NONINTERLACED - }, - { - .refresh = 70, - .xres = 1024, - .yres = 768, - .pixclock = 16886, - .left_margin = 3, - .right_margin = 3, - .upper_margin = 2, - .lower_margin = 2, - .hsync_len = 40, - .vsync_len = 18, - .sync = FB_SYNC_COMP_HIGH_ACT | FB_SYNC_VERT_HIGH_ACT, - .vmode = FB_VMODE_NONINTERLACED - }, - { - .refresh = 75, - .xres = 1024, - .yres = 768, - .pixclock = 15009, - .left_margin = 3, - .right_margin = 3, - .upper_margin = 2, - .lower_margin = 2, - .hsync_len = 80, - .vsync_len = 32, - .sync = FB_SYNC_COMP_HIGH_ACT | FB_SYNC_VERT_HIGH_ACT, - .vmode = FB_VMODE_NONINTERLACED - }, - { - .refresh = 60, - .xres = 1280, - .yres = 480, - .pixclock = 18939, - .left_margin = 353, - .right_margin = 47, - .upper_margin = 39, - .lower_margin = 4, - .hsync_len = 8, - .vsync_len = 2, - .sync = FB_SYNC_COMP_HIGH_ACT | FB_SYNC_VERT_HIGH_ACT, - .vmode = FB_VMODE_NONINTERLACED - }, - { - .refresh = 60, - .xres = 1280, - .yres = 720, - .pixclock = 13426, - .left_margin = 192, - .right_margin = 64, - .upper_margin = 22, - .lower_margin = 1, - .hsync_len = 136, - .vsync_len = 3, - .sync = FB_SYNC_COMP_HIGH_ACT | FB_SYNC_VERT_HIGH_ACT, - .vmode = FB_VMODE_NONINTERLACED - }, - { - .refresh = 60, - .xres = 1280, - .yres = 1024, - .pixclock = 9375, - .left_margin = 38, - .right_margin = 128, - .upper_margin = 2, - .lower_margin = 7, - .hsync_len = 216, - .vsync_len = 37, - .sync = FB_SYNC_COMP_HIGH_ACT | FB_SYNC_VERT_HIGH_ACT, - .vmode = FB_VMODE_NONINTERLACED - }, - { - .refresh = 70, - .xres = 1280, - .yres = 1024, - .pixclock = 9380, - .left_margin = 6, - .right_margin = 6, - .upper_margin = 4, - .lower_margin = 4, - .hsync_len = 60, - .vsync_len = 94, - .sync = FB_SYNC_COMP_HIGH_ACT | FB_SYNC_VERT_HIGH_ACT, - .vmode = FB_VMODE_NONINTERLACED - }, - { - .refresh = 75, - .xres = 1280, - .yres = 1024, - .pixclock = 9380, - .left_margin = 6, - .right_margin = 6, - .upper_margin = 4, - .lower_margin = 4, - .hsync_len = 60, - .vsync_len = 15, - .sync = FB_SYNC_COMP_HIGH_ACT | FB_SYNC_VERT_HIGH_ACT, - .vmode = FB_VMODE_NONINTERLACED - }, - { - .refresh = 60, - .xres = 1920, - .yres = 1080, - .pixclock = 5787, - .left_margin = 328, - .right_margin = 120, - .upper_margin = 34, - .lower_margin = 1, - .hsync_len = 208, - .vsync_len = 3, - .sync = FB_SYNC_COMP_HIGH_ACT | FB_SYNC_VERT_HIGH_ACT, - .vmode = FB_VMODE_NONINTERLACED - }, -}; - -static char *fb_mode; -static unsigned long default_bpp = 32; -static enum fsl_diu_monitor_port monitor_port; -static char *monitor_string; - -#if defined(CONFIG_NOT_COHERENT_CACHE) -static u8 *coherence_data; -static size_t coherence_data_size; -static unsigned int d_cache_line_size; -#endif - -static DEFINE_SPINLOCK(diu_lock); - -enum mfb_index { - PLANE0 = 0, /* Plane 0, only one AOI that fills the screen */ - PLANE1_AOI0, /* Plane 1, first AOI */ - PLANE1_AOI1, /* Plane 1, second AOI */ - PLANE2_AOI0, /* Plane 2, first AOI */ - PLANE2_AOI1, /* Plane 2, second AOI */ -}; - -struct mfb_info { - enum mfb_index index; - char *id; - int registered; - unsigned long pseudo_palette[16]; - struct diu_ad *ad; - unsigned char g_alpha; - unsigned int count; - int x_aoi_d; /* aoi display x offset to physical screen */ - int y_aoi_d; /* aoi display y offset to physical screen */ - struct fsl_diu_data *parent; -}; - -/** - * struct fsl_diu_data - per-DIU data structure - * @dma_addr: DMA address of this structure - * @fsl_diu_info: fb_info objects, one per AOI - * @dev_attr: sysfs structure - * @irq: IRQ - * @monitor_port: the monitor port this DIU is connected to - * @diu_reg: pointer to the DIU hardware registers - * @reg_lock: spinlock for register access - * @dummy_aoi: video buffer for the 4x4 32-bit dummy AOI - * dummy_ad: DIU Area Descriptor for the dummy AOI - * @ad[]: Area Descriptors for each real AOI - * @gamma: gamma color table - * @cursor: hardware cursor data - * - * This data structure must be allocated with 32-byte alignment, so that the - * internal fields can be aligned properly. - */ -struct fsl_diu_data { - dma_addr_t dma_addr; - struct fb_info fsl_diu_info[NUM_AOIS]; - struct mfb_info mfb[NUM_AOIS]; - struct device_attribute dev_attr; - unsigned int irq; - enum fsl_diu_monitor_port monitor_port; - struct diu __iomem *diu_reg; - spinlock_t reg_lock; - u8 dummy_aoi[4 * 4 * 4]; - struct diu_ad dummy_ad __aligned(8); - struct diu_ad ad[NUM_AOIS] __aligned(8); - u8 gamma[256 * 3] __aligned(32); - /* It's easier to parse the cursor data as little-endian */ - __le16 cursor[MAX_CURS * MAX_CURS] __aligned(32); - /* Blank cursor data -- used to hide the cursor */ - __le16 blank_cursor[MAX_CURS * MAX_CURS] __aligned(32); - uint8_t edid_data[EDID_LENGTH]; - bool has_edid; -} __aligned(32); - -/* Determine the DMA address of a member of the fsl_diu_data structure */ -#define DMA_ADDR(p, f) ((p)->dma_addr + offsetof(struct fsl_diu_data, f)) - -static struct mfb_info mfb_template[] = { - { - .index = PLANE0, - .id = "Panel0", - .registered = 0, - .count = 0, - .x_aoi_d = 0, - .y_aoi_d = 0, - }, - { - .index = PLANE1_AOI0, - .id = "Panel1 AOI0", - .registered = 0, - .g_alpha = 0xff, - .count = 0, - .x_aoi_d = 0, - .y_aoi_d = 0, - }, - { - .index = PLANE1_AOI1, - .id = "Panel1 AOI1", - .registered = 0, - .g_alpha = 0xff, - .count = 0, - .x_aoi_d = 0, - .y_aoi_d = 480, - }, - { - .index = PLANE2_AOI0, - .id = "Panel2 AOI0", - .registered = 0, - .g_alpha = 0xff, - .count = 0, - .x_aoi_d = 640, - .y_aoi_d = 0, - }, - { - .index = PLANE2_AOI1, - .id = "Panel2 AOI1", - .registered = 0, - .g_alpha = 0xff, - .count = 0, - .x_aoi_d = 640, - .y_aoi_d = 480, - }, -}; - -#ifdef DEBUG -static void __attribute__ ((unused)) fsl_diu_dump(struct diu __iomem *hw) -{ - mb(); - pr_debug("DIU: desc=%08x,%08x,%08x, gamma=%08x pallete=%08x " - "cursor=%08x curs_pos=%08x diu_mode=%08x bgnd=%08x " - "disp_size=%08x hsyn_para=%08x vsyn_para=%08x syn_pol=%08x " - "thresholds=%08x int_mask=%08x plut=%08x\n", - hw->desc[0], hw->desc[1], hw->desc[2], hw->gamma, - hw->pallete, hw->cursor, hw->curs_pos, hw->diu_mode, - hw->bgnd, hw->disp_size, hw->hsyn_para, hw->vsyn_para, - hw->syn_pol, hw->thresholds, hw->int_mask, hw->plut); - rmb(); -} -#endif - -/** - * fsl_diu_name_to_port - convert a port name to a monitor port enum - * - * Takes the name of a monitor port ("dvi", "lvds", or "dlvds") and returns - * the enum fsl_diu_monitor_port that corresponds to that string. - * - * For compatibility with older versions, a number ("0", "1", or "2") is also - * supported. - * - * If the string is unknown, DVI is assumed. - * - * If the particular port is not supported by the platform, another port - * (platform-specific) is chosen instead. - */ -static enum fsl_diu_monitor_port fsl_diu_name_to_port(const char *s) -{ - enum fsl_diu_monitor_port port = FSL_DIU_PORT_DVI; - unsigned long val; - - if (s) { - if (!kstrtoul(s, 10, &val) && (val <= 2)) - port = (enum fsl_diu_monitor_port) val; - else if (strncmp(s, "lvds", 4) == 0) - port = FSL_DIU_PORT_LVDS; - else if (strncmp(s, "dlvds", 5) == 0) - port = FSL_DIU_PORT_DLVDS; - } - - return diu_ops.valid_monitor_port(port); -} - -/* - * Workaround for failed writing desc register of planes. - * Needed with MPC5121 DIU rev 2.0 silicon. - */ -void wr_reg_wa(u32 *reg, u32 val) -{ - do { - out_be32(reg, val); - } while (in_be32(reg) != val); -} - -static void fsl_diu_enable_panel(struct fb_info *info) -{ - struct mfb_info *pmfbi, *cmfbi, *mfbi = info->par; - struct diu_ad *ad = mfbi->ad; - struct fsl_diu_data *data = mfbi->parent; - struct diu __iomem *hw = data->diu_reg; - - switch (mfbi->index) { - case PLANE0: - wr_reg_wa(&hw->desc[0], ad->paddr); - break; - case PLANE1_AOI0: - cmfbi = &data->mfb[2]; - if (hw->desc[1] != ad->paddr) { /* AOI0 closed */ - if (cmfbi->count > 0) /* AOI1 open */ - ad->next_ad = - cpu_to_le32(cmfbi->ad->paddr); - else - ad->next_ad = 0; - wr_reg_wa(&hw->desc[1], ad->paddr); - } - break; - case PLANE2_AOI0: - cmfbi = &data->mfb[4]; - if (hw->desc[2] != ad->paddr) { /* AOI0 closed */ - if (cmfbi->count > 0) /* AOI1 open */ - ad->next_ad = - cpu_to_le32(cmfbi->ad->paddr); - else - ad->next_ad = 0; - wr_reg_wa(&hw->desc[2], ad->paddr); - } - break; - case PLANE1_AOI1: - pmfbi = &data->mfb[1]; - ad->next_ad = 0; - if (hw->desc[1] == data->dummy_ad.paddr) - wr_reg_wa(&hw->desc[1], ad->paddr); - else /* AOI0 open */ - pmfbi->ad->next_ad = cpu_to_le32(ad->paddr); - break; - case PLANE2_AOI1: - pmfbi = &data->mfb[3]; - ad->next_ad = 0; - if (hw->desc[2] == data->dummy_ad.paddr) - wr_reg_wa(&hw->desc[2], ad->paddr); - else /* AOI0 was open */ - pmfbi->ad->next_ad = cpu_to_le32(ad->paddr); - break; - } -} - -static void fsl_diu_disable_panel(struct fb_info *info) -{ - struct mfb_info *pmfbi, *cmfbi, *mfbi = info->par; - struct diu_ad *ad = mfbi->ad; - struct fsl_diu_data *data = mfbi->parent; - struct diu __iomem *hw = data->diu_reg; - - switch (mfbi->index) { - case PLANE0: - wr_reg_wa(&hw->desc[0], 0); - break; - case PLANE1_AOI0: - cmfbi = &data->mfb[2]; - if (cmfbi->count > 0) /* AOI1 is open */ - wr_reg_wa(&hw->desc[1], cmfbi->ad->paddr); - /* move AOI1 to the first */ - else /* AOI1 was closed */ - wr_reg_wa(&hw->desc[1], data->dummy_ad.paddr); - /* close AOI 0 */ - break; - case PLANE2_AOI0: - cmfbi = &data->mfb[4]; - if (cmfbi->count > 0) /* AOI1 is open */ - wr_reg_wa(&hw->desc[2], cmfbi->ad->paddr); - /* move AOI1 to the first */ - else /* AOI1 was closed */ - wr_reg_wa(&hw->desc[2], data->dummy_ad.paddr); - /* close AOI 0 */ - break; - case PLANE1_AOI1: - pmfbi = &data->mfb[1]; - if (hw->desc[1] != ad->paddr) { - /* AOI1 is not the first in the chain */ - if (pmfbi->count > 0) - /* AOI0 is open, must be the first */ - pmfbi->ad->next_ad = 0; - } else /* AOI1 is the first in the chain */ - wr_reg_wa(&hw->desc[1], data->dummy_ad.paddr); - /* close AOI 1 */ - break; - case PLANE2_AOI1: - pmfbi = &data->mfb[3]; - if (hw->desc[2] != ad->paddr) { - /* AOI1 is not the first in the chain */ - if (pmfbi->count > 0) - /* AOI0 is open, must be the first */ - pmfbi->ad->next_ad = 0; - } else /* AOI1 is the first in the chain */ - wr_reg_wa(&hw->desc[2], data->dummy_ad.paddr); - /* close AOI 1 */ - break; - } -} - -static void enable_lcdc(struct fb_info *info) -{ - struct mfb_info *mfbi = info->par; - struct fsl_diu_data *data = mfbi->parent; - struct diu __iomem *hw = data->diu_reg; - - out_be32(&hw->diu_mode, MFB_MODE1); -} - -static void disable_lcdc(struct fb_info *info) -{ - struct mfb_info *mfbi = info->par; - struct fsl_diu_data *data = mfbi->parent; - struct diu __iomem *hw = data->diu_reg; - - out_be32(&hw->diu_mode, 0); -} - -static void adjust_aoi_size_position(struct fb_var_screeninfo *var, - struct fb_info *info) -{ - struct mfb_info *lower_aoi_mfbi, *upper_aoi_mfbi, *mfbi = info->par; - struct fsl_diu_data *data = mfbi->parent; - int available_height, upper_aoi_bottom; - enum mfb_index index = mfbi->index; - int lower_aoi_is_open, upper_aoi_is_open; - __u32 base_plane_width, base_plane_height, upper_aoi_height; - - base_plane_width = data->fsl_diu_info[0].var.xres; - base_plane_height = data->fsl_diu_info[0].var.yres; - - if (mfbi->x_aoi_d < 0) - mfbi->x_aoi_d = 0; - if (mfbi->y_aoi_d < 0) - mfbi->y_aoi_d = 0; - switch (index) { - case PLANE0: - if (mfbi->x_aoi_d != 0) - mfbi->x_aoi_d = 0; - if (mfbi->y_aoi_d != 0) - mfbi->y_aoi_d = 0; - break; - case PLANE1_AOI0: - case PLANE2_AOI0: - lower_aoi_mfbi = data->fsl_diu_info[index+1].par; - lower_aoi_is_open = lower_aoi_mfbi->count > 0 ? 1 : 0; - if (var->xres > base_plane_width) - var->xres = base_plane_width; - if ((mfbi->x_aoi_d + var->xres) > base_plane_width) - mfbi->x_aoi_d = base_plane_width - var->xres; - - if (lower_aoi_is_open) - available_height = lower_aoi_mfbi->y_aoi_d; - else - available_height = base_plane_height; - if (var->yres > available_height) - var->yres = available_height; - if ((mfbi->y_aoi_d + var->yres) > available_height) - mfbi->y_aoi_d = available_height - var->yres; - break; - case PLANE1_AOI1: - case PLANE2_AOI1: - upper_aoi_mfbi = data->fsl_diu_info[index-1].par; - upper_aoi_height = data->fsl_diu_info[index-1].var.yres; - upper_aoi_bottom = upper_aoi_mfbi->y_aoi_d + upper_aoi_height; - upper_aoi_is_open = upper_aoi_mfbi->count > 0 ? 1 : 0; - if (var->xres > base_plane_width) - var->xres = base_plane_width; - if ((mfbi->x_aoi_d + var->xres) > base_plane_width) - mfbi->x_aoi_d = base_plane_width - var->xres; - if (mfbi->y_aoi_d < 0) - mfbi->y_aoi_d = 0; - if (upper_aoi_is_open) { - if (mfbi->y_aoi_d < upper_aoi_bottom) - mfbi->y_aoi_d = upper_aoi_bottom; - available_height = base_plane_height - - upper_aoi_bottom; - } else - available_height = base_plane_height; - if (var->yres > available_height) - var->yres = available_height; - if ((mfbi->y_aoi_d + var->yres) > base_plane_height) - mfbi->y_aoi_d = base_plane_height - var->yres; - break; - } -} -/* - * Checks to see if the hardware supports the state requested by var passed - * in. This function does not alter the hardware state! If the var passed in - * is slightly off by what the hardware can support then we alter the var - * PASSED in to what we can do. If the hardware doesn't support mode change - * a -EINVAL will be returned by the upper layers. - */ -static int fsl_diu_check_var(struct fb_var_screeninfo *var, - struct fb_info *info) -{ - if (var->xres_virtual < var->xres) - var->xres_virtual = var->xres; - if (var->yres_virtual < var->yres) - var->yres_virtual = var->yres; - - if (var->xoffset < 0) - var->xoffset = 0; - - if (var->yoffset < 0) - var->yoffset = 0; - - if (var->xoffset + info->var.xres > info->var.xres_virtual) - var->xoffset = info->var.xres_virtual - info->var.xres; - - if (var->yoffset + info->var.yres > info->var.yres_virtual) - var->yoffset = info->var.yres_virtual - info->var.yres; - - if ((var->bits_per_pixel != 32) && (var->bits_per_pixel != 24) && - (var->bits_per_pixel != 16)) - var->bits_per_pixel = default_bpp; - - switch (var->bits_per_pixel) { - case 16: - var->red.length = 5; - var->red.offset = 11; - var->red.msb_right = 0; - - var->green.length = 6; - var->green.offset = 5; - var->green.msb_right = 0; - - var->blue.length = 5; - var->blue.offset = 0; - var->blue.msb_right = 0; - - var->transp.length = 0; - var->transp.offset = 0; - var->transp.msb_right = 0; - break; - case 24: - var->red.length = 8; - var->red.offset = 0; - var->red.msb_right = 0; - - var->green.length = 8; - var->green.offset = 8; - var->green.msb_right = 0; - - var->blue.length = 8; - var->blue.offset = 16; - var->blue.msb_right = 0; - - var->transp.length = 0; - var->transp.offset = 0; - var->transp.msb_right = 0; - break; - case 32: - var->red.length = 8; - var->red.offset = 16; - var->red.msb_right = 0; - - var->green.length = 8; - var->green.offset = 8; - var->green.msb_right = 0; - - var->blue.length = 8; - var->blue.offset = 0; - var->blue.msb_right = 0; - - var->transp.length = 8; - var->transp.offset = 24; - var->transp.msb_right = 0; - - break; - } - - var->height = -1; - var->width = -1; - var->grayscale = 0; - - /* Copy nonstd field to/from sync for fbset usage */ - var->sync |= var->nonstd; - var->nonstd |= var->sync; - - adjust_aoi_size_position(var, info); - return 0; -} - -static void set_fix(struct fb_info *info) -{ - struct fb_fix_screeninfo *fix = &info->fix; - struct fb_var_screeninfo *var = &info->var; - struct mfb_info *mfbi = info->par; - - strncpy(fix->id, mfbi->id, sizeof(fix->id)); - fix->line_length = var->xres_virtual * var->bits_per_pixel / 8; - fix->type = FB_TYPE_PACKED_PIXELS; - fix->accel = FB_ACCEL_NONE; - fix->visual = FB_VISUAL_TRUECOLOR; - fix->xpanstep = 1; - fix->ypanstep = 1; -} - -static void update_lcdc(struct fb_info *info) -{ - struct fb_var_screeninfo *var = &info->var; - struct mfb_info *mfbi = info->par; - struct fsl_diu_data *data = mfbi->parent; - struct diu __iomem *hw; - int i, j; - u8 *gamma_table_base; - - u32 temp; - - hw = data->diu_reg; - - if (diu_ops.set_monitor_port) - diu_ops.set_monitor_port(data->monitor_port); - gamma_table_base = data->gamma; - - /* Prep for DIU init - gamma table, cursor table */ - - for (i = 0; i <= 2; i++) - for (j = 0; j <= 255; j++) - *gamma_table_base++ = j; - - if (diu_ops.set_gamma_table) - diu_ops.set_gamma_table(data->monitor_port, data->gamma); - - disable_lcdc(info); - - /* Program DIU registers */ - - out_be32(&hw->gamma, DMA_ADDR(data, gamma)); - - out_be32(&hw->bgnd, 0x007F7F7F); /* Set background to grey */ - out_be32(&hw->disp_size, (var->yres << 16) | var->xres); - - /* Horizontal and vertical configuration register */ - temp = var->left_margin << 22 | /* BP_H */ - var->hsync_len << 11 | /* PW_H */ - var->right_margin; /* FP_H */ - - out_be32(&hw->hsyn_para, temp); - - temp = var->upper_margin << 22 | /* BP_V */ - var->vsync_len << 11 | /* PW_V */ - var->lower_margin; /* FP_V */ - - out_be32(&hw->vsyn_para, temp); - - diu_ops.set_pixel_clock(var->pixclock); - -#ifndef CONFIG_PPC_MPC512x - /* - * The PLUT register is defined differently on the MPC5121 than it - * is on other SOCs. Unfortunately, there's no documentation that - * explains how it's supposed to be programmed, so for now, we leave - * it at the default value on the MPC5121. - * - * For other SOCs, program it for the highest priority, which will - * reduce the chance of underrun. Technically, we should scale the - * priority to match the screen resolution, but doing that properly - * requires delicate fine-tuning for each use-case. - */ - out_be32(&hw->plut, 0x01F5F666); -#endif - - /* Enable the DIU */ - enable_lcdc(info); -} - -static int map_video_memory(struct fb_info *info) -{ - u32 smem_len = info->fix.line_length * info->var.yres_virtual; - void *p; - - p = alloc_pages_exact(smem_len, GFP_DMA | __GFP_ZERO); - if (!p) { - dev_err(info->dev, "unable to allocate fb memory\n"); - return -ENOMEM; - } - mutex_lock(&info->mm_lock); - info->screen_base = p; - info->fix.smem_start = virt_to_phys(info->screen_base); - info->fix.smem_len = smem_len; - mutex_unlock(&info->mm_lock); - info->screen_size = info->fix.smem_len; - - return 0; -} - -static void unmap_video_memory(struct fb_info *info) -{ - void *p = info->screen_base; - size_t l = info->fix.smem_len; - - mutex_lock(&info->mm_lock); - info->screen_base = NULL; - info->fix.smem_start = 0; - info->fix.smem_len = 0; - mutex_unlock(&info->mm_lock); - - if (p) - free_pages_exact(p, l); -} - -/* - * Using the fb_var_screeninfo in fb_info we set the aoi of this - * particular framebuffer. It is a light version of fsl_diu_set_par. - */ -static int fsl_diu_set_aoi(struct fb_info *info) -{ - struct fb_var_screeninfo *var = &info->var; - struct mfb_info *mfbi = info->par; - struct diu_ad *ad = mfbi->ad; - - /* AOI should not be greater than display size */ - ad->offset_xyi = cpu_to_le32((var->yoffset << 16) | var->xoffset); - ad->offset_xyd = cpu_to_le32((mfbi->y_aoi_d << 16) | mfbi->x_aoi_d); - return 0; -} - -/** - * fsl_diu_get_pixel_format: return the pixel format for a given color depth - * - * The pixel format is a 32-bit value that determine which bits in each - * pixel are to be used for each color. This is the default function used - * if the platform does not define its own version. - */ -static u32 fsl_diu_get_pixel_format(unsigned int bits_per_pixel) -{ -#define PF_BYTE_F 0x10000000 -#define PF_ALPHA_C_MASK 0x0E000000 -#define PF_ALPHA_C_SHIFT 25 -#define PF_BLUE_C_MASK 0x01800000 -#define PF_BLUE_C_SHIFT 23 -#define PF_GREEN_C_MASK 0x00600000 -#define PF_GREEN_C_SHIFT 21 -#define PF_RED_C_MASK 0x00180000 -#define PF_RED_C_SHIFT 19 -#define PF_PALETTE 0x00040000 -#define PF_PIXEL_S_MASK 0x00030000 -#define PF_PIXEL_S_SHIFT 16 -#define PF_COMP_3_MASK 0x0000F000 -#define PF_COMP_3_SHIFT 12 -#define PF_COMP_2_MASK 0x00000F00 -#define PF_COMP_2_SHIFT 8 -#define PF_COMP_1_MASK 0x000000F0 -#define PF_COMP_1_SHIFT 4 -#define PF_COMP_0_MASK 0x0000000F -#define PF_COMP_0_SHIFT 0 - -#define MAKE_PF(alpha, red, green, blue, size, c0, c1, c2, c3) \ - cpu_to_le32(PF_BYTE_F | (alpha << PF_ALPHA_C_SHIFT) | \ - (blue << PF_BLUE_C_SHIFT) | (green << PF_GREEN_C_SHIFT) | \ - (red << PF_RED_C_SHIFT) | (c3 << PF_COMP_3_SHIFT) | \ - (c2 << PF_COMP_2_SHIFT) | (c1 << PF_COMP_1_SHIFT) | \ - (c0 << PF_COMP_0_SHIFT) | (size << PF_PIXEL_S_SHIFT)) - - switch (bits_per_pixel) { - case 32: - /* 0x88883316 */ - return MAKE_PF(3, 2, 1, 0, 3, 8, 8, 8, 8); - case 24: - /* 0x88082219 */ - return MAKE_PF(4, 0, 1, 2, 2, 8, 8, 8, 0); - case 16: - /* 0x65053118 */ - return MAKE_PF(4, 2, 1, 0, 1, 5, 6, 5, 0); - default: - pr_err("fsl-diu: unsupported color depth %u\n", bits_per_pixel); - return 0; - } -} - -/* - * Copies a cursor image from user space to the proper place in driver - * memory so that the hardware can display the cursor image. - * - * Cursor data is represented as a sequence of 'width' bits packed into bytes. - * That is, the first 8 bits are in the first byte, the second 8 bits in the - * second byte, and so on. Therefore, the each row of the cursor is (width + - * 7) / 8 bytes of 'data' - * - * The DIU only supports cursors up to 32x32 (MAX_CURS). We reject cursors - * larger than this, so we already know that 'width' <= 32. Therefore, we can - * simplify our code by using a 32-bit big-endian integer ("line") to read in - * a single line of pixels, and only look at the top 'width' bits of that - * integer. - * - * This could result in an unaligned 32-bit read. For example, if the cursor - * is 24x24, then the first three bytes of 'image' contain the pixel data for - * the top line of the cursor. We do a 32-bit read of 'image', but we look - * only at the top 24 bits. Then we increment 'image' by 3 bytes. The next - * read is unaligned. The only problem is that we might read past the end of - * 'image' by 1-3 bytes, but that should not cause any problems. - */ -static void fsl_diu_load_cursor_image(struct fb_info *info, - const void *image, uint16_t bg, uint16_t fg, - unsigned int width, unsigned int height) -{ - struct mfb_info *mfbi = info->par; - struct fsl_diu_data *data = mfbi->parent; - __le16 *cursor = data->cursor; - __le16 _fg = cpu_to_le16(fg); - __le16 _bg = cpu_to_le16(bg); - unsigned int h, w; - - for (h = 0; h < height; h++) { - uint32_t mask = 1 << 31; - uint32_t line = be32_to_cpup(image); - - for (w = 0; w < width; w++) { - cursor[w] = (line & mask) ? _fg : _bg; - mask >>= 1; - } - - cursor += MAX_CURS; - image += DIV_ROUND_UP(width, 8); - } -} - -/* - * Set a hardware cursor. The image data for the cursor is passed via the - * fb_cursor object. - */ -static int fsl_diu_cursor(struct fb_info *info, struct fb_cursor *cursor) -{ - struct mfb_info *mfbi = info->par; - struct fsl_diu_data *data = mfbi->parent; - struct diu __iomem *hw = data->diu_reg; - - if (cursor->image.width > MAX_CURS || cursor->image.height > MAX_CURS) - return -EINVAL; - - /* The cursor size has changed */ - if (cursor->set & FB_CUR_SETSIZE) { - /* - * The DIU cursor is a fixed size, so when we get this - * message, instead of resizing the cursor, we just clear - * all the image data, in expectation of new data. However, - * in tests this control does not appear to be normally - * called. - */ - memset(data->cursor, 0, sizeof(data->cursor)); - } - - /* The cursor position has changed (cursor->image.dx|dy) */ - if (cursor->set & FB_CUR_SETPOS) { - uint32_t xx, yy; - - yy = (cursor->image.dy - info->var.yoffset) & 0x7ff; - xx = (cursor->image.dx - info->var.xoffset) & 0x7ff; - - out_be32(&hw->curs_pos, yy << 16 | xx); - } - - /* - * FB_CUR_SETIMAGE - the cursor image has changed - * FB_CUR_SETCMAP - the cursor colors has changed - * FB_CUR_SETSHAPE - the cursor bitmask has changed - */ - if (cursor->set & (FB_CUR_SETSHAPE | FB_CUR_SETCMAP | FB_CUR_SETIMAGE)) { - unsigned int image_size = - DIV_ROUND_UP(cursor->image.width, 8) * cursor->image.height; - unsigned int image_words = - DIV_ROUND_UP(image_size, sizeof(uint32_t)); - unsigned int bg_idx = cursor->image.bg_color; - unsigned int fg_idx = cursor->image.fg_color; - uint8_t buffer[image_size]; - uint32_t *image, *source, *mask; - uint16_t fg, bg; - unsigned int i; - - if (info->state != FBINFO_STATE_RUNNING) - return 0; - - /* - * Determine the size of the cursor image data. Normally, - * it's 8x16. - */ - image_size = DIV_ROUND_UP(cursor->image.width, 8) * - cursor->image.height; - - bg = ((info->cmap.red[bg_idx] & 0xf8) << 7) | - ((info->cmap.green[bg_idx] & 0xf8) << 2) | - ((info->cmap.blue[bg_idx] & 0xf8) >> 3) | - 1 << 15; - - fg = ((info->cmap.red[fg_idx] & 0xf8) << 7) | - ((info->cmap.green[fg_idx] & 0xf8) << 2) | - ((info->cmap.blue[fg_idx] & 0xf8) >> 3) | - 1 << 15; - - /* Use 32-bit operations on the data to improve performance */ - image = (uint32_t *)buffer; - source = (uint32_t *)cursor->image.data; - mask = (uint32_t *)cursor->mask; - - if (cursor->rop == ROP_XOR) - for (i = 0; i < image_words; i++) - image[i] = source[i] ^ mask[i]; - else - for (i = 0; i < image_words; i++) - image[i] = source[i] & mask[i]; - - fsl_diu_load_cursor_image(info, image, bg, fg, - cursor->image.width, cursor->image.height); - } - - /* - * Show or hide the cursor. The cursor data is always stored in the - * 'cursor' memory block, and the actual cursor position is always in - * the DIU's CURS_POS register. To hide the cursor, we redirect the - * CURSOR register to a blank cursor. The show the cursor, we - * redirect the CURSOR register to the real cursor data. - */ - if (cursor->enable) - out_be32(&hw->cursor, DMA_ADDR(data, cursor)); - else - out_be32(&hw->cursor, DMA_ADDR(data, blank_cursor)); - - return 0; -} - -/* - * Using the fb_var_screeninfo in fb_info we set the resolution of this - * particular framebuffer. This function alters the fb_fix_screeninfo stored - * in fb_info. It does not alter var in fb_info since we are using that - * data. This means we depend on the data in var inside fb_info to be - * supported by the hardware. fsl_diu_check_var is always called before - * fsl_diu_set_par to ensure this. - */ -static int fsl_diu_set_par(struct fb_info *info) -{ - unsigned long len; - struct fb_var_screeninfo *var = &info->var; - struct mfb_info *mfbi = info->par; - struct fsl_diu_data *data = mfbi->parent; - struct diu_ad *ad = mfbi->ad; - struct diu __iomem *hw; - - hw = data->diu_reg; - - set_fix(info); - - len = info->var.yres_virtual * info->fix.line_length; - /* Alloc & dealloc each time resolution/bpp change */ - if (len != info->fix.smem_len) { - if (info->fix.smem_start) - unmap_video_memory(info); - - /* Memory allocation for framebuffer */ - if (map_video_memory(info)) { - dev_err(info->dev, "unable to allocate fb memory 1\n"); - return -ENOMEM; - } - } - - if (diu_ops.get_pixel_format) - ad->pix_fmt = diu_ops.get_pixel_format(data->monitor_port, - var->bits_per_pixel); - else - ad->pix_fmt = fsl_diu_get_pixel_format(var->bits_per_pixel); - - ad->addr = cpu_to_le32(info->fix.smem_start); - ad->src_size_g_alpha = cpu_to_le32((var->yres_virtual << 12) | - var->xres_virtual) | mfbi->g_alpha; - /* AOI should not be greater than display size */ - ad->aoi_size = cpu_to_le32((var->yres << 16) | var->xres); - ad->offset_xyi = cpu_to_le32((var->yoffset << 16) | var->xoffset); - ad->offset_xyd = cpu_to_le32((mfbi->y_aoi_d << 16) | mfbi->x_aoi_d); - - /* Disable chroma keying function */ - ad->ckmax_r = 0; - ad->ckmax_g = 0; - ad->ckmax_b = 0; - - ad->ckmin_r = 255; - ad->ckmin_g = 255; - ad->ckmin_b = 255; - - if (mfbi->index == PLANE0) - update_lcdc(info); - return 0; -} - -static inline __u32 CNVT_TOHW(__u32 val, __u32 width) -{ - return ((val << width) + 0x7FFF - val) >> 16; -} - -/* - * Set a single color register. The values supplied have a 16 bit magnitude - * which needs to be scaled in this function for the hardware. Things to take - * into consideration are how many color registers, if any, are supported with - * the current color visual. With truecolor mode no color palettes are - * supported. Here a pseudo palette is created which we store the value in - * pseudo_palette in struct fb_info. For pseudocolor mode we have a limited - * color palette. - */ -static int fsl_diu_setcolreg(unsigned int regno, unsigned int red, - unsigned int green, unsigned int blue, - unsigned int transp, struct fb_info *info) -{ - int ret = 1; - - /* - * If greyscale is true, then we convert the RGB value - * to greyscale no matter what visual we are using. - */ - if (info->var.grayscale) - red = green = blue = (19595 * red + 38470 * green + - 7471 * blue) >> 16; - switch (info->fix.visual) { - case FB_VISUAL_TRUECOLOR: - /* - * 16-bit True Colour. We encode the RGB value - * according to the RGB bitfield information. - */ - if (regno < 16) { - u32 *pal = info->pseudo_palette; - u32 v; - - red = CNVT_TOHW(red, info->var.red.length); - green = CNVT_TOHW(green, info->var.green.length); - blue = CNVT_TOHW(blue, info->var.blue.length); - transp = CNVT_TOHW(transp, info->var.transp.length); - - v = (red << info->var.red.offset) | - (green << info->var.green.offset) | - (blue << info->var.blue.offset) | - (transp << info->var.transp.offset); - - pal[regno] = v; - ret = 0; - } - break; - } - - return ret; -} - -/* - * Pan (or wrap, depending on the `vmode' field) the display using the - * 'xoffset' and 'yoffset' fields of the 'var' structure. If the values - * don't fit, return -EINVAL. - */ -static int fsl_diu_pan_display(struct fb_var_screeninfo *var, - struct fb_info *info) -{ - if ((info->var.xoffset == var->xoffset) && - (info->var.yoffset == var->yoffset)) - return 0; /* No change, do nothing */ - - if (var->xoffset < 0 || var->yoffset < 0 - || var->xoffset + info->var.xres > info->var.xres_virtual - || var->yoffset + info->var.yres > info->var.yres_virtual) - return -EINVAL; - - info->var.xoffset = var->xoffset; - info->var.yoffset = var->yoffset; - - if (var->vmode & FB_VMODE_YWRAP) - info->var.vmode |= FB_VMODE_YWRAP; - else - info->var.vmode &= ~FB_VMODE_YWRAP; - - fsl_diu_set_aoi(info); - - return 0; -} - -static int fsl_diu_ioctl(struct fb_info *info, unsigned int cmd, - unsigned long arg) -{ - struct mfb_info *mfbi = info->par; - struct diu_ad *ad = mfbi->ad; - struct mfb_chroma_key ck; - unsigned char global_alpha; - struct aoi_display_offset aoi_d; - __u32 pix_fmt; - void __user *buf = (void __user *)arg; - - if (!arg) - return -EINVAL; - - dev_dbg(info->dev, "ioctl %08x (dir=%s%s type=%u nr=%u size=%u)\n", cmd, - _IOC_DIR(cmd) & _IOC_READ ? "R" : "", - _IOC_DIR(cmd) & _IOC_WRITE ? "W" : "", - _IOC_TYPE(cmd), _IOC_NR(cmd), _IOC_SIZE(cmd)); - - switch (cmd) { - case MFB_SET_PIXFMT_OLD: - dev_warn(info->dev, - "MFB_SET_PIXFMT value of 0x%08x is deprecated.\n", - MFB_SET_PIXFMT_OLD); - case MFB_SET_PIXFMT: - if (copy_from_user(&pix_fmt, buf, sizeof(pix_fmt))) - return -EFAULT; - ad->pix_fmt = pix_fmt; - break; - case MFB_GET_PIXFMT_OLD: - dev_warn(info->dev, - "MFB_GET_PIXFMT value of 0x%08x is deprecated.\n", - MFB_GET_PIXFMT_OLD); - case MFB_GET_PIXFMT: - pix_fmt = ad->pix_fmt; - if (copy_to_user(buf, &pix_fmt, sizeof(pix_fmt))) - return -EFAULT; - break; - case MFB_SET_AOID: - if (copy_from_user(&aoi_d, buf, sizeof(aoi_d))) - return -EFAULT; - mfbi->x_aoi_d = aoi_d.x_aoi_d; - mfbi->y_aoi_d = aoi_d.y_aoi_d; - fsl_diu_check_var(&info->var, info); - fsl_diu_set_aoi(info); - break; - case MFB_GET_AOID: - aoi_d.x_aoi_d = mfbi->x_aoi_d; - aoi_d.y_aoi_d = mfbi->y_aoi_d; - if (copy_to_user(buf, &aoi_d, sizeof(aoi_d))) - return -EFAULT; - break; - case MFB_GET_ALPHA: - global_alpha = mfbi->g_alpha; - if (copy_to_user(buf, &global_alpha, sizeof(global_alpha))) - return -EFAULT; - break; - case MFB_SET_ALPHA: - /* set panel information */ - if (copy_from_user(&global_alpha, buf, sizeof(global_alpha))) - return -EFAULT; - ad->src_size_g_alpha = (ad->src_size_g_alpha & (~0xff)) | - (global_alpha & 0xff); - mfbi->g_alpha = global_alpha; - break; - case MFB_SET_CHROMA_KEY: - /* set panel winformation */ - if (copy_from_user(&ck, buf, sizeof(ck))) - return -EFAULT; - - if (ck.enable && - (ck.red_max < ck.red_min || - ck.green_max < ck.green_min || - ck.blue_max < ck.blue_min)) - return -EINVAL; - - if (!ck.enable) { - ad->ckmax_r = 0; - ad->ckmax_g = 0; - ad->ckmax_b = 0; - ad->ckmin_r = 255; - ad->ckmin_g = 255; - ad->ckmin_b = 255; - } else { - ad->ckmax_r = ck.red_max; - ad->ckmax_g = ck.green_max; - ad->ckmax_b = ck.blue_max; - ad->ckmin_r = ck.red_min; - ad->ckmin_g = ck.green_min; - ad->ckmin_b = ck.blue_min; - } - break; -#ifdef CONFIG_PPC_MPC512x - case MFB_SET_GAMMA: { - struct fsl_diu_data *data = mfbi->parent; - - if (copy_from_user(data->gamma, buf, sizeof(data->gamma))) - return -EFAULT; - setbits32(&data->diu_reg->gamma, 0); /* Force table reload */ - break; - } - case MFB_GET_GAMMA: { - struct fsl_diu_data *data = mfbi->parent; - - if (copy_to_user(buf, data->gamma, sizeof(data->gamma))) - return -EFAULT; - break; - } -#endif - default: - dev_err(info->dev, "unknown ioctl command (0x%08X)\n", cmd); - return -ENOIOCTLCMD; - } - - return 0; -} - -static inline void fsl_diu_enable_interrupts(struct fsl_diu_data *data) -{ - u32 int_mask = INT_UNDRUN; /* enable underrun detection */ - - if (IS_ENABLED(CONFIG_NOT_COHERENT_CACHE)) - int_mask |= INT_VSYNC; /* enable vertical sync */ - - clrbits32(&data->diu_reg->int_mask, int_mask); -} - -/* turn on fb if count == 1 - */ -static int fsl_diu_open(struct fb_info *info, int user) -{ - struct mfb_info *mfbi = info->par; - int res = 0; - - /* free boot splash memory on first /dev/fb0 open */ - if ((mfbi->index == PLANE0) && diu_ops.release_bootmem) - diu_ops.release_bootmem(); - - spin_lock(&diu_lock); - mfbi->count++; - if (mfbi->count == 1) { - fsl_diu_check_var(&info->var, info); - res = fsl_diu_set_par(info); - if (res < 0) - mfbi->count--; - else { - fsl_diu_enable_interrupts(mfbi->parent); - fsl_diu_enable_panel(info); - } - } - - spin_unlock(&diu_lock); - return res; -} - -/* turn off fb if count == 0 - */ -static int fsl_diu_release(struct fb_info *info, int user) -{ - struct mfb_info *mfbi = info->par; - int res = 0; - - spin_lock(&diu_lock); - mfbi->count--; - if (mfbi->count == 0) { - struct fsl_diu_data *data = mfbi->parent; - bool disable = true; - int i; - - /* Disable interrupts only if all AOIs are closed */ - for (i = 0; i < NUM_AOIS; i++) { - struct mfb_info *mi = data->fsl_diu_info[i].par; - - if (mi->count) - disable = false; - } - if (disable) - out_be32(&data->diu_reg->int_mask, 0xffffffff); - fsl_diu_disable_panel(info); - } - - spin_unlock(&diu_lock); - return res; -} - -static struct fb_ops fsl_diu_ops = { - .owner = THIS_MODULE, - .fb_check_var = fsl_diu_check_var, - .fb_set_par = fsl_diu_set_par, - .fb_setcolreg = fsl_diu_setcolreg, - .fb_pan_display = fsl_diu_pan_display, - .fb_fillrect = cfb_fillrect, - .fb_copyarea = cfb_copyarea, - .fb_imageblit = cfb_imageblit, - .fb_ioctl = fsl_diu_ioctl, - .fb_open = fsl_diu_open, - .fb_release = fsl_diu_release, - .fb_cursor = fsl_diu_cursor, -}; - -static int install_fb(struct fb_info *info) -{ - int rc; - struct mfb_info *mfbi = info->par; - struct fsl_diu_data *data = mfbi->parent; - const char *aoi_mode, *init_aoi_mode = "320x240"; - struct fb_videomode *db = fsl_diu_mode_db; - unsigned int dbsize = ARRAY_SIZE(fsl_diu_mode_db); - int has_default_mode = 1; - - info->var.activate = FB_ACTIVATE_NOW; - info->fbops = &fsl_diu_ops; - info->flags = FBINFO_DEFAULT | FBINFO_VIRTFB | FBINFO_PARTIAL_PAN_OK | - FBINFO_READS_FAST; - info->pseudo_palette = mfbi->pseudo_palette; - - rc = fb_alloc_cmap(&info->cmap, 16, 0); - if (rc) - return rc; - - if (mfbi->index == PLANE0) { - if (data->has_edid) { - /* Now build modedb from EDID */ - fb_edid_to_monspecs(data->edid_data, &info->monspecs); - fb_videomode_to_modelist(info->monspecs.modedb, - info->monspecs.modedb_len, - &info->modelist); - db = info->monspecs.modedb; - dbsize = info->monspecs.modedb_len; - } - aoi_mode = fb_mode; - } else { - aoi_mode = init_aoi_mode; - } - rc = fb_find_mode(&info->var, info, aoi_mode, db, dbsize, NULL, - default_bpp); - if (!rc) { - /* - * For plane 0 we continue and look into - * driver's internal modedb. - */ - if ((mfbi->index == PLANE0) && data->has_edid) - has_default_mode = 0; - else - return -EINVAL; - } - - if (!has_default_mode) { - rc = fb_find_mode(&info->var, info, aoi_mode, fsl_diu_mode_db, - ARRAY_SIZE(fsl_diu_mode_db), NULL, default_bpp); - if (rc) - has_default_mode = 1; - } - - /* Still not found, use preferred mode from database if any */ - if (!has_default_mode && info->monspecs.modedb) { - struct fb_monspecs *specs = &info->monspecs; - struct fb_videomode *modedb = &specs->modedb[0]; - - /* - * Get preferred timing. If not found, - * first mode in database will be used. - */ - if (specs->misc & FB_MISC_1ST_DETAIL) { - int i; - - for (i = 0; i < specs->modedb_len; i++) { - if (specs->modedb[i].flag & FB_MODE_IS_FIRST) { - modedb = &specs->modedb[i]; - break; - } - } - } - - info->var.bits_per_pixel = default_bpp; - fb_videomode_to_var(&info->var, modedb); - } - - if (fsl_diu_check_var(&info->var, info)) { - dev_err(info->dev, "fsl_diu_check_var failed\n"); - unmap_video_memory(info); - fb_dealloc_cmap(&info->cmap); - return -EINVAL; - } - - if (register_framebuffer(info) < 0) { - dev_err(info->dev, "register_framebuffer failed\n"); - unmap_video_memory(info); - fb_dealloc_cmap(&info->cmap); - return -EINVAL; - } - - mfbi->registered = 1; - dev_info(info->dev, "%s registered successfully\n", mfbi->id); - - return 0; -} - -static void uninstall_fb(struct fb_info *info) -{ - struct mfb_info *mfbi = info->par; - - if (!mfbi->registered) - return; - - unregister_framebuffer(info); - unmap_video_memory(info); - if (&info->cmap) - fb_dealloc_cmap(&info->cmap); - - mfbi->registered = 0; -} - -static irqreturn_t fsl_diu_isr(int irq, void *dev_id) -{ - struct diu __iomem *hw = dev_id; - uint32_t status = in_be32(&hw->int_status); - - if (status) { - /* This is the workaround for underrun */ - if (status & INT_UNDRUN) { - out_be32(&hw->diu_mode, 0); - udelay(1); - out_be32(&hw->diu_mode, 1); - } -#if defined(CONFIG_NOT_COHERENT_CACHE) - else if (status & INT_VSYNC) { - unsigned int i; - - for (i = 0; i < coherence_data_size; - i += d_cache_line_size) - __asm__ __volatile__ ( - "dcbz 0, %[input]" - ::[input]"r"(&coherence_data[i])); - } -#endif - return IRQ_HANDLED; - } - return IRQ_NONE; -} - -#ifdef CONFIG_PM -/* - * Power management hooks. Note that we won't be called from IRQ context, - * unlike the blank functions above, so we may sleep. - */ -static int fsl_diu_suspend(struct platform_device *ofdev, pm_message_t state) -{ - struct fsl_diu_data *data; - - data = dev_get_drvdata(&ofdev->dev); - disable_lcdc(data->fsl_diu_info); - - return 0; -} - -static int fsl_diu_resume(struct platform_device *ofdev) -{ - struct fsl_diu_data *data; - - data = dev_get_drvdata(&ofdev->dev); - enable_lcdc(data->fsl_diu_info); - - return 0; -} - -#else -#define fsl_diu_suspend NULL -#define fsl_diu_resume NULL -#endif /* CONFIG_PM */ - -static ssize_t store_monitor(struct device *device, - struct device_attribute *attr, const char *buf, size_t count) -{ - enum fsl_diu_monitor_port old_monitor_port; - struct fsl_diu_data *data = - container_of(attr, struct fsl_diu_data, dev_attr); - - old_monitor_port = data->monitor_port; - data->monitor_port = fsl_diu_name_to_port(buf); - - if (old_monitor_port != data->monitor_port) { - /* All AOIs need adjust pixel format - * fsl_diu_set_par only change the pixsel format here - * unlikely to fail. */ - unsigned int i; - - for (i=0; i < NUM_AOIS; i++) - fsl_diu_set_par(&data->fsl_diu_info[i]); - } - return count; -} - -static ssize_t show_monitor(struct device *device, - struct device_attribute *attr, char *buf) -{ - struct fsl_diu_data *data = - container_of(attr, struct fsl_diu_data, dev_attr); - - switch (data->monitor_port) { - case FSL_DIU_PORT_DVI: - return sprintf(buf, "DVI\n"); - case FSL_DIU_PORT_LVDS: - return sprintf(buf, "Single-link LVDS\n"); - case FSL_DIU_PORT_DLVDS: - return sprintf(buf, "Dual-link LVDS\n"); - } - - return 0; -} - -static int fsl_diu_probe(struct platform_device *pdev) -{ - struct device_node *np = pdev->dev.of_node; - struct mfb_info *mfbi; - struct fsl_diu_data *data; - dma_addr_t dma_addr; /* DMA addr of fsl_diu_data struct */ - const void *prop; - unsigned int i; - int ret; - - data = dmam_alloc_coherent(&pdev->dev, sizeof(struct fsl_diu_data), - &dma_addr, GFP_DMA | __GFP_ZERO); - if (!data) - return -ENOMEM; - data->dma_addr = dma_addr; - - /* - * dma_alloc_coherent() uses a page allocator, so the address is - * always page-aligned. We need the memory to be 32-byte aligned, - * so that's good. However, if one day the allocator changes, we - * need to catch that. It's not worth the effort to handle unaligned - * alloctions now because it's highly unlikely to ever be a problem. - */ - if ((unsigned long)data & 31) { - dev_err(&pdev->dev, "misaligned allocation"); - ret = -ENOMEM; - goto error; - } - - spin_lock_init(&data->reg_lock); - - for (i = 0; i < NUM_AOIS; i++) { - struct fb_info *info = &data->fsl_diu_info[i]; - - info->device = &pdev->dev; - info->par = &data->mfb[i]; - - /* - * We store the physical address of the AD in the reserved - * 'paddr' field of the AD itself. - */ - data->ad[i].paddr = DMA_ADDR(data, ad[i]); - - info->fix.smem_start = 0; - - /* Initialize the AOI data structure */ - mfbi = info->par; - memcpy(mfbi, &mfb_template[i], sizeof(struct mfb_info)); - mfbi->parent = data; - mfbi->ad = &data->ad[i]; - } - - /* Get the EDID data from the device tree, if present */ - prop = of_get_property(np, "edid", &ret); - if (prop && ret == EDID_LENGTH) { - memcpy(data->edid_data, prop, EDID_LENGTH); - data->has_edid = true; - } - - data->diu_reg = of_iomap(np, 0); - if (!data->diu_reg) { - dev_err(&pdev->dev, "cannot map DIU registers\n"); - ret = -EFAULT; - goto error; - } - - /* Get the IRQ of the DIU */ - data->irq = irq_of_parse_and_map(np, 0); - - if (!data->irq) { - dev_err(&pdev->dev, "could not get DIU IRQ\n"); - ret = -EINVAL; - goto error; - } - data->monitor_port = monitor_port; - - /* Initialize the dummy Area Descriptor */ - data->dummy_ad.addr = cpu_to_le32(DMA_ADDR(data, dummy_aoi)); - data->dummy_ad.pix_fmt = 0x88882317; - data->dummy_ad.src_size_g_alpha = cpu_to_le32((4 << 12) | 4); - data->dummy_ad.aoi_size = cpu_to_le32((4 << 16) | 2); - data->dummy_ad.offset_xyi = 0; - data->dummy_ad.offset_xyd = 0; - data->dummy_ad.next_ad = 0; - data->dummy_ad.paddr = DMA_ADDR(data, dummy_ad); - - /* - * Let DIU continue to display splash screen if it was pre-initialized - * by the bootloader; otherwise, clear the display. - */ - if (in_be32(&data->diu_reg->diu_mode) == MFB_MODE0) - out_be32(&data->diu_reg->desc[0], 0); - - out_be32(&data->diu_reg->desc[1], data->dummy_ad.paddr); - out_be32(&data->diu_reg->desc[2], data->dummy_ad.paddr); - - /* - * Older versions of U-Boot leave interrupts enabled, so disable - * all of them and clear the status register. - */ - out_be32(&data->diu_reg->int_mask, 0xffffffff); - in_be32(&data->diu_reg->int_status); - - ret = request_irq(data->irq, fsl_diu_isr, 0, "fsl-diu-fb", - data->diu_reg); - if (ret) { - dev_err(&pdev->dev, "could not claim irq\n"); - goto error; - } - - for (i = 0; i < NUM_AOIS; i++) { - ret = install_fb(&data->fsl_diu_info[i]); - if (ret) { - dev_err(&pdev->dev, "could not register fb %d\n", i); - free_irq(data->irq, data->diu_reg); - goto error; - } - } - - sysfs_attr_init(&data->dev_attr.attr); - data->dev_attr.attr.name = "monitor"; - data->dev_attr.attr.mode = S_IRUGO|S_IWUSR; - data->dev_attr.show = show_monitor; - data->dev_attr.store = store_monitor; - ret = device_create_file(&pdev->dev, &data->dev_attr); - if (ret) { - dev_err(&pdev->dev, "could not create sysfs file %s\n", - data->dev_attr.attr.name); - } - - dev_set_drvdata(&pdev->dev, data); - return 0; - -error: - for (i = 0; i < NUM_AOIS; i++) - uninstall_fb(&data->fsl_diu_info[i]); - - iounmap(data->diu_reg); - - return ret; -} - -static int fsl_diu_remove(struct platform_device *pdev) -{ - struct fsl_diu_data *data; - int i; - - data = dev_get_drvdata(&pdev->dev); - disable_lcdc(&data->fsl_diu_info[0]); - - free_irq(data->irq, data->diu_reg); - - for (i = 0; i < NUM_AOIS; i++) - uninstall_fb(&data->fsl_diu_info[i]); - - iounmap(data->diu_reg); - - return 0; -} - -#ifndef MODULE -static int __init fsl_diu_setup(char *options) -{ - char *opt; - unsigned long val; - - if (!options || !*options) - return 0; - - while ((opt = strsep(&options, ",")) != NULL) { - if (!*opt) - continue; - if (!strncmp(opt, "monitor=", 8)) { - monitor_port = fsl_diu_name_to_port(opt + 8); - } else if (!strncmp(opt, "bpp=", 4)) { - if (!kstrtoul(opt + 4, 10, &val)) - default_bpp = val; - } else - fb_mode = opt; - } - - return 0; -} -#endif - -static struct of_device_id fsl_diu_match[] = { -#ifdef CONFIG_PPC_MPC512x - { - .compatible = "fsl,mpc5121-diu", - }, -#endif - { - .compatible = "fsl,diu", - }, - {} -}; -MODULE_DEVICE_TABLE(of, fsl_diu_match); - -static struct platform_driver fsl_diu_driver = { - .driver = { - .name = "fsl-diu-fb", - .owner = THIS_MODULE, - .of_match_table = fsl_diu_match, - }, - .probe = fsl_diu_probe, - .remove = fsl_diu_remove, - .suspend = fsl_diu_suspend, - .resume = fsl_diu_resume, -}; - -static int __init fsl_diu_init(void) -{ -#ifdef CONFIG_NOT_COHERENT_CACHE - struct device_node *np; - const u32 *prop; -#endif - int ret; -#ifndef MODULE - char *option; - - /* - * For kernel boot options (in 'video=xxxfb:<options>' format) - */ - if (fb_get_options("fslfb", &option)) - return -ENODEV; - fsl_diu_setup(option); -#else - monitor_port = fsl_diu_name_to_port(monitor_string); -#endif - pr_info("Freescale Display Interface Unit (DIU) framebuffer driver\n"); - -#ifdef CONFIG_NOT_COHERENT_CACHE - np = of_find_node_by_type(NULL, "cpu"); - if (!np) { - pr_err("fsl-diu-fb: can't find 'cpu' device node\n"); - return -ENODEV; - } - - prop = of_get_property(np, "d-cache-size", NULL); - if (prop == NULL) { - pr_err("fsl-diu-fb: missing 'd-cache-size' property' " - "in 'cpu' node\n"); - of_node_put(np); - return -ENODEV; - } - - /* - * Freescale PLRU requires 13/8 times the cache size to do a proper - * displacement flush - */ - coherence_data_size = be32_to_cpup(prop) * 13; - coherence_data_size /= 8; - - pr_debug("fsl-diu-fb: coherence data size is %zu bytes\n", - coherence_data_size); - - prop = of_get_property(np, "d-cache-line-size", NULL); - if (prop == NULL) { - pr_err("fsl-diu-fb: missing 'd-cache-line-size' property' " - "in 'cpu' node\n"); - of_node_put(np); - return -ENODEV; - } - d_cache_line_size = be32_to_cpup(prop); - - pr_debug("fsl-diu-fb: cache lines size is %u bytes\n", - d_cache_line_size); - - of_node_put(np); - coherence_data = vmalloc(coherence_data_size); - if (!coherence_data) { - pr_err("fsl-diu-fb: could not allocate coherence data " - "(size=%zu)\n", coherence_data_size); - return -ENOMEM; - } - -#endif - - ret = platform_driver_register(&fsl_diu_driver); - if (ret) { - pr_err("fsl-diu-fb: failed to register platform driver\n"); -#if defined(CONFIG_NOT_COHERENT_CACHE) - vfree(coherence_data); -#endif - } - return ret; -} - -static void __exit fsl_diu_exit(void) -{ - platform_driver_unregister(&fsl_diu_driver); -#if defined(CONFIG_NOT_COHERENT_CACHE) - vfree(coherence_data); -#endif -} - -module_init(fsl_diu_init); -module_exit(fsl_diu_exit); - -MODULE_AUTHOR("York Sun <yorksun@freescale.com>"); -MODULE_DESCRIPTION("Freescale DIU framebuffer driver"); -MODULE_LICENSE("GPL"); - -module_param_named(mode, fb_mode, charp, 0); -MODULE_PARM_DESC(mode, - "Specify resolution as \"<xres>x<yres>[-<bpp>][@<refresh>]\" "); -module_param_named(bpp, default_bpp, ulong, 0); -MODULE_PARM_DESC(bpp, "Specify bit-per-pixel if not specified in 'mode'"); -module_param_named(monitor, monitor_string, charp, 0); -MODULE_PARM_DESC(monitor, "Specify the monitor port " - "(\"dvi\", \"lvds\", or \"dlvds\") if supported by the platform"); - |