+++ /dev/null
-/*
- * Copyright (C) 2008
- * Guennadi Liakhovetski, DENX Software Engineering, <lg@denx.de>
- *
- * Copyright 2004-2007 Freescale Semiconductor, Inc. All Rights Reserved.
- *
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License version 2 as
- * published by the Free Software Foundation.
- */
-
-#include <linux/module.h>
-#include <linux/kernel.h>
-#include <linux/platform_device.h>
-#include <linux/sched.h>
-#include <linux/errno.h>
-#include <linux/string.h>
-#include <linux/interrupt.h>
-#include <linux/slab.h>
-#include <linux/fb.h>
-#include <linux/delay.h>
-#include <linux/init.h>
-#include <linux/ioport.h>
-#include <linux/dma-mapping.h>
-#include <linux/dmaengine.h>
-#include <linux/console.h>
-#include <linux/clk.h>
-#include <linux/mutex.h>
-
-#include <mach/hardware.h>
-#include <mach/ipu.h>
-#include <mach/mx3fb.h>
-
-#include <asm/io.h>
-#include <asm/uaccess.h>
-
-#define MX3FB_NAME "mx3_sdc_fb"
-
-#define MX3FB_REG_OFFSET 0xB4
-
-/* SDC Registers */
-#define SDC_COM_CONF (0xB4 - MX3FB_REG_OFFSET)
-#define SDC_GW_CTRL (0xB8 - MX3FB_REG_OFFSET)
-#define SDC_FG_POS (0xBC - MX3FB_REG_OFFSET)
-#define SDC_BG_POS (0xC0 - MX3FB_REG_OFFSET)
-#define SDC_CUR_POS (0xC4 - MX3FB_REG_OFFSET)
-#define SDC_PWM_CTRL (0xC8 - MX3FB_REG_OFFSET)
-#define SDC_CUR_MAP (0xCC - MX3FB_REG_OFFSET)
-#define SDC_HOR_CONF (0xD0 - MX3FB_REG_OFFSET)
-#define SDC_VER_CONF (0xD4 - MX3FB_REG_OFFSET)
-#define SDC_SHARP_CONF_1 (0xD8 - MX3FB_REG_OFFSET)
-#define SDC_SHARP_CONF_2 (0xDC - MX3FB_REG_OFFSET)
-
-/* Register bits */
-#define SDC_COM_TFT_COLOR 0x00000001UL
-#define SDC_COM_FG_EN 0x00000010UL
-#define SDC_COM_GWSEL 0x00000020UL
-#define SDC_COM_GLB_A 0x00000040UL
-#define SDC_COM_KEY_COLOR_G 0x00000080UL
-#define SDC_COM_BG_EN 0x00000200UL
-#define SDC_COM_SHARP 0x00001000UL
-
-#define SDC_V_SYNC_WIDTH_L 0x00000001UL
-
-/* Display Interface registers */
-#define DI_DISP_IF_CONF (0x0124 - MX3FB_REG_OFFSET)
-#define DI_DISP_SIG_POL (0x0128 - MX3FB_REG_OFFSET)
-#define DI_SER_DISP1_CONF (0x012C - MX3FB_REG_OFFSET)
-#define DI_SER_DISP2_CONF (0x0130 - MX3FB_REG_OFFSET)
-#define DI_HSP_CLK_PER (0x0134 - MX3FB_REG_OFFSET)
-#define DI_DISP0_TIME_CONF_1 (0x0138 - MX3FB_REG_OFFSET)
-#define DI_DISP0_TIME_CONF_2 (0x013C - MX3FB_REG_OFFSET)
-#define DI_DISP0_TIME_CONF_3 (0x0140 - MX3FB_REG_OFFSET)
-#define DI_DISP1_TIME_CONF_1 (0x0144 - MX3FB_REG_OFFSET)
-#define DI_DISP1_TIME_CONF_2 (0x0148 - MX3FB_REG_OFFSET)
-#define DI_DISP1_TIME_CONF_3 (0x014C - MX3FB_REG_OFFSET)
-#define DI_DISP2_TIME_CONF_1 (0x0150 - MX3FB_REG_OFFSET)
-#define DI_DISP2_TIME_CONF_2 (0x0154 - MX3FB_REG_OFFSET)
-#define DI_DISP2_TIME_CONF_3 (0x0158 - MX3FB_REG_OFFSET)
-#define DI_DISP3_TIME_CONF (0x015C - MX3FB_REG_OFFSET)
-#define DI_DISP0_DB0_MAP (0x0160 - MX3FB_REG_OFFSET)
-#define DI_DISP0_DB1_MAP (0x0164 - MX3FB_REG_OFFSET)
-#define DI_DISP0_DB2_MAP (0x0168 - MX3FB_REG_OFFSET)
-#define DI_DISP0_CB0_MAP (0x016C - MX3FB_REG_OFFSET)
-#define DI_DISP0_CB1_MAP (0x0170 - MX3FB_REG_OFFSET)
-#define DI_DISP0_CB2_MAP (0x0174 - MX3FB_REG_OFFSET)
-#define DI_DISP1_DB0_MAP (0x0178 - MX3FB_REG_OFFSET)
-#define DI_DISP1_DB1_MAP (0x017C - MX3FB_REG_OFFSET)
-#define DI_DISP1_DB2_MAP (0x0180 - MX3FB_REG_OFFSET)
-#define DI_DISP1_CB0_MAP (0x0184 - MX3FB_REG_OFFSET)
-#define DI_DISP1_CB1_MAP (0x0188 - MX3FB_REG_OFFSET)
-#define DI_DISP1_CB2_MAP (0x018C - MX3FB_REG_OFFSET)
-#define DI_DISP2_DB0_MAP (0x0190 - MX3FB_REG_OFFSET)
-#define DI_DISP2_DB1_MAP (0x0194 - MX3FB_REG_OFFSET)
-#define DI_DISP2_DB2_MAP (0x0198 - MX3FB_REG_OFFSET)
-#define DI_DISP2_CB0_MAP (0x019C - MX3FB_REG_OFFSET)
-#define DI_DISP2_CB1_MAP (0x01A0 - MX3FB_REG_OFFSET)
-#define DI_DISP2_CB2_MAP (0x01A4 - MX3FB_REG_OFFSET)
-#define DI_DISP3_B0_MAP (0x01A8 - MX3FB_REG_OFFSET)
-#define DI_DISP3_B1_MAP (0x01AC - MX3FB_REG_OFFSET)
-#define DI_DISP3_B2_MAP (0x01B0 - MX3FB_REG_OFFSET)
-#define DI_DISP_ACC_CC (0x01B4 - MX3FB_REG_OFFSET)
-#define DI_DISP_LLA_CONF (0x01B8 - MX3FB_REG_OFFSET)
-#define DI_DISP_LLA_DATA (0x01BC - MX3FB_REG_OFFSET)
-
-/* DI_DISP_SIG_POL bits */
-#define DI_D3_VSYNC_POL_SHIFT 28
-#define DI_D3_HSYNC_POL_SHIFT 27
-#define DI_D3_DRDY_SHARP_POL_SHIFT 26
-#define DI_D3_CLK_POL_SHIFT 25
-#define DI_D3_DATA_POL_SHIFT 24
-
-/* DI_DISP_IF_CONF bits */
-#define DI_D3_CLK_IDLE_SHIFT 26
-#define DI_D3_CLK_SEL_SHIFT 25
-#define DI_D3_DATAMSK_SHIFT 24
-
-enum ipu_panel {
- IPU_PANEL_SHARP_TFT,
- IPU_PANEL_TFT,
-};
-
-struct ipu_di_signal_cfg {
- unsigned datamask_en:1;
- unsigned clksel_en:1;
- unsigned clkidle_en:1;
- unsigned data_pol:1; /* true = inverted */
- unsigned clk_pol:1; /* true = rising edge */
- unsigned enable_pol:1;
- unsigned Hsync_pol:1; /* true = active high */
- unsigned Vsync_pol:1;
-};
-
-static const struct fb_videomode mx3fb_modedb[] = {
- {
- /* 240x320 @ 60 Hz */
- .name = "Sharp-QVGA",
- .refresh = 60,
- .xres = 240,
- .yres = 320,
- .pixclock = 185925,
- .left_margin = 9,
- .right_margin = 16,
- .upper_margin = 7,
- .lower_margin = 9,
- .hsync_len = 1,
- .vsync_len = 1,
- .sync = FB_SYNC_HOR_HIGH_ACT | FB_SYNC_SHARP_MODE |
- FB_SYNC_CLK_INVERT | FB_SYNC_DATA_INVERT |
- FB_SYNC_CLK_IDLE_EN,
- .vmode = FB_VMODE_NONINTERLACED,
- .flag = 0,
- }, {
- /* 240x33 @ 60 Hz */
- .name = "Sharp-CLI",
- .refresh = 60,
- .xres = 240,
- .yres = 33,
- .pixclock = 185925,
- .left_margin = 9,
- .right_margin = 16,
- .upper_margin = 7,
- .lower_margin = 9 + 287,
- .hsync_len = 1,
- .vsync_len = 1,
- .sync = FB_SYNC_HOR_HIGH_ACT | FB_SYNC_SHARP_MODE |
- FB_SYNC_CLK_INVERT | FB_SYNC_DATA_INVERT |
- FB_SYNC_CLK_IDLE_EN,
- .vmode = FB_VMODE_NONINTERLACED,
- .flag = 0,
- }, {
- /* 640x480 @ 60 Hz */
- .name = "NEC-VGA",
- .refresh = 60,
- .xres = 640,
- .yres = 480,
- .pixclock = 38255,
- .left_margin = 144,
- .right_margin = 0,
- .upper_margin = 34,
- .lower_margin = 40,
- .hsync_len = 1,
- .vsync_len = 1,
- .sync = FB_SYNC_VERT_HIGH_ACT | FB_SYNC_OE_ACT_HIGH,
- .vmode = FB_VMODE_NONINTERLACED,
- .flag = 0,
- }, {
- /* NTSC TV output */
- .name = "TV-NTSC",
- .refresh = 60,
- .xres = 640,
- .yres = 480,
- .pixclock = 37538,
- .left_margin = 38,
- .right_margin = 858 - 640 - 38 - 3,
- .upper_margin = 36,
- .lower_margin = 518 - 480 - 36 - 1,
- .hsync_len = 3,
- .vsync_len = 1,
- .sync = 0,
- .vmode = FB_VMODE_NONINTERLACED,
- .flag = 0,
- }, {
- /* PAL TV output */
- .name = "TV-PAL",
- .refresh = 50,
- .xres = 640,
- .yres = 480,
- .pixclock = 37538,
- .left_margin = 38,
- .right_margin = 960 - 640 - 38 - 32,
- .upper_margin = 32,
- .lower_margin = 555 - 480 - 32 - 3,
- .hsync_len = 32,
- .vsync_len = 3,
- .sync = 0,
- .vmode = FB_VMODE_NONINTERLACED,
- .flag = 0,
- }, {
- /* TV output VGA mode, 640x480 @ 65 Hz */
- .name = "TV-VGA",
- .refresh = 60,
- .xres = 640,
- .yres = 480,
- .pixclock = 40574,
- .left_margin = 35,
- .right_margin = 45,
- .upper_margin = 9,
- .lower_margin = 1,
- .hsync_len = 46,
- .vsync_len = 5,
- .sync = 0,
- .vmode = FB_VMODE_NONINTERLACED,
- .flag = 0,
- },
-};
-
-struct mx3fb_data {
- struct fb_info *fbi;
- int backlight_level;
- void __iomem *reg_base;
- spinlock_t lock;
- struct device *dev;
-
- uint32_t h_start_width;
- uint32_t v_start_width;
-};
-
-struct dma_chan_request {
- struct mx3fb_data *mx3fb;
- enum ipu_channel id;
-};
-
-/* MX3 specific framebuffer information. */
-struct mx3fb_info {
- int blank;
- enum ipu_channel ipu_ch;
- uint32_t cur_ipu_buf;
-
- u32 pseudo_palette[16];
-
- struct completion flip_cmpl;
- struct mutex mutex; /* Protects fb-ops */
- struct mx3fb_data *mx3fb;
- struct idmac_channel *idmac_channel;
- struct dma_async_tx_descriptor *txd;
- dma_cookie_t cookie;
- struct scatterlist sg[2];
-
- u32 sync; /* preserve var->sync flags */
-};
-
-static void mx3fb_dma_done(void *);
-
-/* Used fb-mode and bpp. Can be set on kernel command line, therefore file-static. */
-static const char *fb_mode;
-static unsigned long default_bpp = 16;
-
-static u32 mx3fb_read_reg(struct mx3fb_data *mx3fb, unsigned long reg)
-{
- return __raw_readl(mx3fb->reg_base + reg);
-}
-
-static void mx3fb_write_reg(struct mx3fb_data *mx3fb, u32 value, unsigned long reg)
-{
- __raw_writel(value, mx3fb->reg_base + reg);
-}
-
-static const uint32_t di_mappings[] = {
- 0x1600AAAA, 0x00E05555, 0x00070000, 3, /* RGB888 */
- 0x0005000F, 0x000B000F, 0x0011000F, 1, /* RGB666 */
- 0x0011000F, 0x000B000F, 0x0005000F, 1, /* BGR666 */
- 0x0004003F, 0x000A000F, 0x000F003F, 1 /* RGB565 */
-};
-
-static void sdc_fb_init(struct mx3fb_info *fbi)
-{
- struct mx3fb_data *mx3fb = fbi->mx3fb;
- uint32_t reg;
-
- reg = mx3fb_read_reg(mx3fb, SDC_COM_CONF);
-
- mx3fb_write_reg(mx3fb, reg | SDC_COM_BG_EN, SDC_COM_CONF);
-}
-
-/* Returns enabled flag before uninit */
-static uint32_t sdc_fb_uninit(struct mx3fb_info *fbi)
-{
- struct mx3fb_data *mx3fb = fbi->mx3fb;
- uint32_t reg;
-
- reg = mx3fb_read_reg(mx3fb, SDC_COM_CONF);
-
- mx3fb_write_reg(mx3fb, reg & ~SDC_COM_BG_EN, SDC_COM_CONF);
-
- return reg & SDC_COM_BG_EN;
-}
-
-static void sdc_enable_channel(struct mx3fb_info *mx3_fbi)
-{
- struct mx3fb_data *mx3fb = mx3_fbi->mx3fb;
- struct idmac_channel *ichan = mx3_fbi->idmac_channel;
- struct dma_chan *dma_chan = &ichan->dma_chan;
- unsigned long flags;
- dma_cookie_t cookie;
-
- dev_dbg(mx3fb->dev, "mx3fbi %p, desc %p, sg %p\n", mx3_fbi,
- to_tx_desc(mx3_fbi->txd), to_tx_desc(mx3_fbi->txd)->sg);
-
- /* This enables the channel */
- if (mx3_fbi->cookie < 0) {
- mx3_fbi->txd = dma_chan->device->device_prep_slave_sg(dma_chan,
- &mx3_fbi->sg[0], 1, DMA_TO_DEVICE, DMA_PREP_INTERRUPT);
- if (!mx3_fbi->txd) {
- dev_err(mx3fb->dev, "Cannot allocate descriptor on %d\n",
- dma_chan->chan_id);
- return;
- }
-
- mx3_fbi->txd->callback_param = mx3_fbi->txd;
- mx3_fbi->txd->callback = mx3fb_dma_done;
-
- cookie = mx3_fbi->txd->tx_submit(mx3_fbi->txd);
- dev_dbg(mx3fb->dev, "%d: Submit %p #%d [%c]\n", __LINE__,
- mx3_fbi->txd, cookie, list_empty(&ichan->queue) ? '-' : '+');
- } else {
- if (!mx3_fbi->txd || !mx3_fbi->txd->tx_submit) {
- dev_err(mx3fb->dev, "Cannot enable channel %d\n",
- dma_chan->chan_id);
- return;
- }
-
- /* Just re-activate the same buffer */
- dma_async_issue_pending(dma_chan);
- cookie = mx3_fbi->cookie;
- dev_dbg(mx3fb->dev, "%d: Re-submit %p #%d [%c]\n", __LINE__,
- mx3_fbi->txd, cookie, list_empty(&ichan->queue) ? '-' : '+');
- }
-
- if (cookie >= 0) {
- spin_lock_irqsave(&mx3fb->lock, flags);
- sdc_fb_init(mx3_fbi);
- mx3_fbi->cookie = cookie;
- spin_unlock_irqrestore(&mx3fb->lock, flags);
- }
-
- /*
- * Attention! Without this msleep the channel keeps generating
- * interrupts. Next sdc_set_brightness() is going to be called
- * from mx3fb_blank().
- */
- msleep(2);
-}
-
-static void sdc_disable_channel(struct mx3fb_info *mx3_fbi)
-{
- struct mx3fb_data *mx3fb = mx3_fbi->mx3fb;
- uint32_t enabled;
- unsigned long flags;
-
- spin_lock_irqsave(&mx3fb->lock, flags);
-
- enabled = sdc_fb_uninit(mx3_fbi);
-
- spin_unlock_irqrestore(&mx3fb->lock, flags);
-
- mx3_fbi->txd->chan->device->device_terminate_all(mx3_fbi->txd->chan);
- mx3_fbi->txd = NULL;
- mx3_fbi->cookie = -EINVAL;
-}
-
-/**
- * sdc_set_window_pos() - set window position of the respective plane.
- * @mx3fb: mx3fb context.
- * @channel: IPU DMAC channel ID.
- * @x_pos: X coordinate relative to the top left corner to place window at.
- * @y_pos: Y coordinate relative to the top left corner to place window at.
- * @return: 0 on success or negative error code on failure.
- */
-static int sdc_set_window_pos(struct mx3fb_data *mx3fb, enum ipu_channel channel,
- int16_t x_pos, int16_t y_pos)
-{
- x_pos += mx3fb->h_start_width;
- y_pos += mx3fb->v_start_width;
-
- if (channel != IDMAC_SDC_0)
- return -EINVAL;
-
- mx3fb_write_reg(mx3fb, (x_pos << 16) | y_pos, SDC_BG_POS);
- return 0;
-}
-
-/**
- * sdc_init_panel() - initialize a synchronous LCD panel.
- * @mx3fb: mx3fb context.
- * @panel: panel type.
- * @pixel_clk: desired pixel clock frequency in Hz.
- * @width: width of panel in pixels.
- * @height: height of panel in pixels.
- * @pixel_fmt: pixel format of buffer as FOURCC ASCII code.
- * @h_start_width: number of pixel clocks between the HSYNC signal pulse
- * and the start of valid data.
- * @h_sync_width: width of the HSYNC signal in units of pixel clocks.
- * @h_end_width: number of pixel clocks between the end of valid data
- * and the HSYNC signal for next line.
- * @v_start_width: number of lines between the VSYNC signal pulse and the
- * start of valid data.
- * @v_sync_width: width of the VSYNC signal in units of lines
- * @v_end_width: number of lines between the end of valid data and the
- * VSYNC signal for next frame.
- * @sig: bitfield of signal polarities for LCD interface.
- * @return: 0 on success or negative error code on failure.
- */
-static int sdc_init_panel(struct mx3fb_data *mx3fb, enum ipu_panel panel,
- uint32_t pixel_clk,
- uint16_t width, uint16_t height,
- enum pixel_fmt pixel_fmt,
- uint16_t h_start_width, uint16_t h_sync_width,
- uint16_t h_end_width, uint16_t v_start_width,
- uint16_t v_sync_width, uint16_t v_end_width,
- struct ipu_di_signal_cfg sig)
-{
- unsigned long lock_flags;
- uint32_t reg;
- uint32_t old_conf;
- uint32_t div;
- struct clk *ipu_clk;
-
- dev_dbg(mx3fb->dev, "panel size = %d x %d", width, height);
-
- if (v_sync_width == 0 || h_sync_width == 0)
- return -EINVAL;
-
- /* Init panel size and blanking periods */
- reg = ((uint32_t) (h_sync_width - 1) << 26) |
- ((uint32_t) (width + h_start_width + h_end_width - 1) << 16);
- mx3fb_write_reg(mx3fb, reg, SDC_HOR_CONF);
-
-#ifdef DEBUG
- printk(KERN_CONT " hor_conf %x,", reg);
-#endif
-
- reg = ((uint32_t) (v_sync_width - 1) << 26) | SDC_V_SYNC_WIDTH_L |
- ((uint32_t) (height + v_start_width + v_end_width - 1) << 16);
- mx3fb_write_reg(mx3fb, reg, SDC_VER_CONF);
-
-#ifdef DEBUG
- printk(KERN_CONT " ver_conf %x\n", reg);
-#endif
-
- mx3fb->h_start_width = h_start_width;
- mx3fb->v_start_width = v_start_width;
-
- switch (panel) {
- case IPU_PANEL_SHARP_TFT:
- mx3fb_write_reg(mx3fb, 0x00FD0102L, SDC_SHARP_CONF_1);
- mx3fb_write_reg(mx3fb, 0x00F500F4L, SDC_SHARP_CONF_2);
- mx3fb_write_reg(mx3fb, SDC_COM_SHARP | SDC_COM_TFT_COLOR, SDC_COM_CONF);
- break;
- case IPU_PANEL_TFT:
- mx3fb_write_reg(mx3fb, SDC_COM_TFT_COLOR, SDC_COM_CONF);
- break;
- default:
- return -EINVAL;
- }
-
- /* Init clocking */
-
- /*
- * Calculate divider: fractional part is 4 bits so simply multiple by
- * 24 to get fractional part, as long as we stay under ~250MHz and on
- * i.MX31 it (HSP_CLK) is <= 178MHz. Currently 128.267MHz
- */
- dev_dbg(mx3fb->dev, "pixel clk = %d\n", pixel_clk);
-
- ipu_clk = clk_get(mx3fb->dev, "ipu_clk");
- div = clk_get_rate(ipu_clk) * 16 / pixel_clk;
- clk_put(ipu_clk);
-
- if (div < 0x40) { /* Divider less than 4 */
- dev_dbg(mx3fb->dev,
- "InitPanel() - Pixel clock divider less than 4\n");
- div = 0x40;
- }
-
- spin_lock_irqsave(&mx3fb->lock, lock_flags);
-
- /*
- * DISP3_IF_CLK_DOWN_WR is half the divider value and 2 fraction bits
- * fewer. Subtract 1 extra from DISP3_IF_CLK_DOWN_WR based on timing
- * debug. DISP3_IF_CLK_UP_WR is 0
- */
- mx3fb_write_reg(mx3fb, (((div / 8) - 1) << 22) | div, DI_DISP3_TIME_CONF);
-
- /* DI settings */
- old_conf = mx3fb_read_reg(mx3fb, DI_DISP_IF_CONF) & 0x78FFFFFF;
- old_conf |= sig.datamask_en << DI_D3_DATAMSK_SHIFT |
- sig.clksel_en << DI_D3_CLK_SEL_SHIFT |
- sig.clkidle_en << DI_D3_CLK_IDLE_SHIFT;
- mx3fb_write_reg(mx3fb, old_conf, DI_DISP_IF_CONF);
-
- old_conf = mx3fb_read_reg(mx3fb, DI_DISP_SIG_POL) & 0xE0FFFFFF;
- old_conf |= sig.data_pol << DI_D3_DATA_POL_SHIFT |
- sig.clk_pol << DI_D3_CLK_POL_SHIFT |
- sig.enable_pol << DI_D3_DRDY_SHARP_POL_SHIFT |
- sig.Hsync_pol << DI_D3_HSYNC_POL_SHIFT |
- sig.Vsync_pol << DI_D3_VSYNC_POL_SHIFT;
- mx3fb_write_reg(mx3fb, old_conf, DI_DISP_SIG_POL);
-
- switch (pixel_fmt) {
- case IPU_PIX_FMT_RGB24:
- mx3fb_write_reg(mx3fb, di_mappings[0], DI_DISP3_B0_MAP);
- mx3fb_write_reg(mx3fb, di_mappings[1], DI_DISP3_B1_MAP);
- mx3fb_write_reg(mx3fb, di_mappings[2], DI_DISP3_B2_MAP);
- mx3fb_write_reg(mx3fb, mx3fb_read_reg(mx3fb, DI_DISP_ACC_CC) |
- ((di_mappings[3] - 1) << 12), DI_DISP_ACC_CC);
- break;
- case IPU_PIX_FMT_RGB666:
- mx3fb_write_reg(mx3fb, di_mappings[4], DI_DISP3_B0_MAP);
- mx3fb_write_reg(mx3fb, di_mappings[5], DI_DISP3_B1_MAP);
- mx3fb_write_reg(mx3fb, di_mappings[6], DI_DISP3_B2_MAP);
- mx3fb_write_reg(mx3fb, mx3fb_read_reg(mx3fb, DI_DISP_ACC_CC) |
- ((di_mappings[7] - 1) << 12), DI_DISP_ACC_CC);
- break;
- case IPU_PIX_FMT_BGR666:
- mx3fb_write_reg(mx3fb, di_mappings[8], DI_DISP3_B0_MAP);
- mx3fb_write_reg(mx3fb, di_mappings[9], DI_DISP3_B1_MAP);
- mx3fb_write_reg(mx3fb, di_mappings[10], DI_DISP3_B2_MAP);
- mx3fb_write_reg(mx3fb, mx3fb_read_reg(mx3fb, DI_DISP_ACC_CC) |
- ((di_mappings[11] - 1) << 12), DI_DISP_ACC_CC);
- break;
- default:
- mx3fb_write_reg(mx3fb, di_mappings[12], DI_DISP3_B0_MAP);
- mx3fb_write_reg(mx3fb, di_mappings[13], DI_DISP3_B1_MAP);
- mx3fb_write_reg(mx3fb, di_mappings[14], DI_DISP3_B2_MAP);
- mx3fb_write_reg(mx3fb, mx3fb_read_reg(mx3fb, DI_DISP_ACC_CC) |
- ((di_mappings[15] - 1) << 12), DI_DISP_ACC_CC);
- break;
- }
-
- spin_unlock_irqrestore(&mx3fb->lock, lock_flags);
-
- dev_dbg(mx3fb->dev, "DI_DISP_IF_CONF = 0x%08X\n",
- mx3fb_read_reg(mx3fb, DI_DISP_IF_CONF));
- dev_dbg(mx3fb->dev, "DI_DISP_SIG_POL = 0x%08X\n",
- mx3fb_read_reg(mx3fb, DI_DISP_SIG_POL));
- dev_dbg(mx3fb->dev, "DI_DISP3_TIME_CONF = 0x%08X\n",
- mx3fb_read_reg(mx3fb, DI_DISP3_TIME_CONF));
-
- return 0;
-}
-
-/**
- * sdc_set_color_key() - set the transparent color key for SDC graphic plane.
- * @mx3fb: mx3fb context.
- * @channel: IPU DMAC channel ID.
- * @enable: boolean to enable or disable color keyl.
- * @color_key: 24-bit RGB color to use as transparent color key.
- * @return: 0 on success or negative error code on failure.
- */
-static int sdc_set_color_key(struct mx3fb_data *mx3fb, enum ipu_channel channel,
- bool enable, uint32_t color_key)
-{
- uint32_t reg, sdc_conf;
- unsigned long lock_flags;
-
- spin_lock_irqsave(&mx3fb->lock, lock_flags);
-
- sdc_conf = mx3fb_read_reg(mx3fb, SDC_COM_CONF);
- if (channel == IDMAC_SDC_0)
- sdc_conf &= ~SDC_COM_GWSEL;
- else
- sdc_conf |= SDC_COM_GWSEL;
-
- if (enable) {
- reg = mx3fb_read_reg(mx3fb, SDC_GW_CTRL) & 0xFF000000L;
- mx3fb_write_reg(mx3fb, reg | (color_key & 0x00FFFFFFL),
- SDC_GW_CTRL);
-
- sdc_conf |= SDC_COM_KEY_COLOR_G;
- } else {
- sdc_conf &= ~SDC_COM_KEY_COLOR_G;
- }
- mx3fb_write_reg(mx3fb, sdc_conf, SDC_COM_CONF);
-
- spin_unlock_irqrestore(&mx3fb->lock, lock_flags);
-
- return 0;
-}
-
-/**
- * sdc_set_global_alpha() - set global alpha blending modes.
- * @mx3fb: mx3fb context.
- * @enable: boolean to enable or disable global alpha blending. If disabled,
- * per pixel blending is used.
- * @alpha: global alpha value.
- * @return: 0 on success or negative error code on failure.
- */
-static int sdc_set_global_alpha(struct mx3fb_data *mx3fb, bool enable, uint8_t alpha)
-{
- uint32_t reg;
- unsigned long lock_flags;
-
- spin_lock_irqsave(&mx3fb->lock, lock_flags);
-
- if (enable) {
- reg = mx3fb_read_reg(mx3fb, SDC_GW_CTRL) & 0x00FFFFFFL;
- mx3fb_write_reg(mx3fb, reg | ((uint32_t) alpha << 24), SDC_GW_CTRL);
-
- reg = mx3fb_read_reg(mx3fb, SDC_COM_CONF);
- mx3fb_write_reg(mx3fb, reg | SDC_COM_GLB_A, SDC_COM_CONF);
- } else {
- reg = mx3fb_read_reg(mx3fb, SDC_COM_CONF);
- mx3fb_write_reg(mx3fb, reg & ~SDC_COM_GLB_A, SDC_COM_CONF);
- }
-
- spin_unlock_irqrestore(&mx3fb->lock, lock_flags);
-
- return 0;
-}
-
-static void sdc_set_brightness(struct mx3fb_data *mx3fb, uint8_t value)
-{
- /* This might be board-specific */
- mx3fb_write_reg(mx3fb, 0x03000000UL | value << 16, SDC_PWM_CTRL);
- return;
-}
-
-static uint32_t bpp_to_pixfmt(int bpp)
-{
- uint32_t pixfmt = 0;
- switch (bpp) {
- case 24:
- pixfmt = IPU_PIX_FMT_BGR24;
- break;
- case 32:
- pixfmt = IPU_PIX_FMT_BGR32;
- break;
- case 16:
- pixfmt = IPU_PIX_FMT_RGB565;
- break;
- }
- return pixfmt;
-}
-
-static int mx3fb_blank(int blank, struct fb_info *fbi);
-static int mx3fb_map_video_memory(struct fb_info *fbi);
-static int mx3fb_unmap_video_memory(struct fb_info *fbi);
-
-/**
- * mx3fb_set_fix() - set fixed framebuffer parameters from variable settings.
- * @info: framebuffer information pointer
- * @return: 0 on success or negative error code on failure.
- */
-static int mx3fb_set_fix(struct fb_info *fbi)
-{
- struct fb_fix_screeninfo *fix = &fbi->fix;
- struct fb_var_screeninfo *var = &fbi->var;
-
- strncpy(fix->id, "DISP3 BG", 8);
-
- 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;
-
- return 0;
-}
-
-static void mx3fb_dma_done(void *arg)
-{
- struct idmac_tx_desc *tx_desc = to_tx_desc(arg);
- struct dma_chan *chan = tx_desc->txd.chan;
- struct idmac_channel *ichannel = to_idmac_chan(chan);
- struct mx3fb_data *mx3fb = ichannel->client;
- struct mx3fb_info *mx3_fbi = mx3fb->fbi->par;
-
- dev_dbg(mx3fb->dev, "irq %d callback\n", ichannel->eof_irq);
-
- /* We only need one interrupt, it will be re-enabled as needed */
- disable_irq(ichannel->eof_irq);
-
- complete(&mx3_fbi->flip_cmpl);
-}
-
-/**
- * mx3fb_set_par() - set framebuffer parameters and change the operating mode.
- * @fbi: framebuffer information pointer.
- * @return: 0 on success or negative error code on failure.
- */
-static int mx3fb_set_par(struct fb_info *fbi)
-{
- u32 mem_len;
- struct ipu_di_signal_cfg sig_cfg;
- enum ipu_panel mode = IPU_PANEL_TFT;
- struct mx3fb_info *mx3_fbi = fbi->par;
- struct mx3fb_data *mx3fb = mx3_fbi->mx3fb;
- struct idmac_channel *ichan = mx3_fbi->idmac_channel;
- struct idmac_video_param *video = &ichan->params.video;
- struct scatterlist *sg = mx3_fbi->sg;
- size_t screen_size;
-
- dev_dbg(mx3fb->dev, "%s [%c]\n", __func__, list_empty(&ichan->queue) ? '-' : '+');
-
- mutex_lock(&mx3_fbi->mutex);
-
- /* Total cleanup */
- if (mx3_fbi->txd)
- sdc_disable_channel(mx3_fbi);
-
- mx3fb_set_fix(fbi);
-
- mem_len = fbi->var.yres_virtual * fbi->fix.line_length;
- if (mem_len > fbi->fix.smem_len) {
- if (fbi->fix.smem_start)
- mx3fb_unmap_video_memory(fbi);
-
- fbi->fix.smem_len = mem_len;
- if (mx3fb_map_video_memory(fbi) < 0) {
- mutex_unlock(&mx3_fbi->mutex);
- return -ENOMEM;
- }
- }
-
- screen_size = fbi->fix.line_length * fbi->var.yres;
-
- sg_init_table(&sg[0], 1);
- sg_init_table(&sg[1], 1);
-
- sg_dma_address(&sg[0]) = fbi->fix.smem_start;
- sg_set_page(&sg[0], virt_to_page(fbi->screen_base),
- fbi->fix.smem_len,
- offset_in_page(fbi->screen_base));
-
- if (mx3_fbi->ipu_ch == IDMAC_SDC_0) {
- memset(&sig_cfg, 0, sizeof(sig_cfg));
- if (fbi->var.sync & FB_SYNC_HOR_HIGH_ACT)
- sig_cfg.Hsync_pol = true;
- if (fbi->var.sync & FB_SYNC_VERT_HIGH_ACT)
- sig_cfg.Vsync_pol = true;
- if (fbi->var.sync & FB_SYNC_CLK_INVERT)
- sig_cfg.clk_pol = true;
- if (fbi->var.sync & FB_SYNC_DATA_INVERT)
- sig_cfg.data_pol = true;
- if (fbi->var.sync & FB_SYNC_OE_ACT_HIGH)
- sig_cfg.enable_pol = true;
- if (fbi->var.sync & FB_SYNC_CLK_IDLE_EN)
- sig_cfg.clkidle_en = true;
- if (fbi->var.sync & FB_SYNC_CLK_SEL_EN)
- sig_cfg.clksel_en = true;
- if (fbi->var.sync & FB_SYNC_SHARP_MODE)
- mode = IPU_PANEL_SHARP_TFT;
-
- dev_dbg(fbi->device, "pixclock = %ul Hz\n",
- (u32) (PICOS2KHZ(fbi->var.pixclock) * 1000UL));
-
- if (sdc_init_panel(mx3fb, mode,
- (PICOS2KHZ(fbi->var.pixclock)) * 1000UL,
- fbi->var.xres, fbi->var.yres,
- (fbi->var.sync & FB_SYNC_SWAP_RGB) ?
- IPU_PIX_FMT_BGR666 : IPU_PIX_FMT_RGB666,
- fbi->var.left_margin,
- fbi->var.hsync_len,
- fbi->var.right_margin +
- fbi->var.hsync_len,
- fbi->var.upper_margin,
- fbi->var.vsync_len,
- fbi->var.lower_margin +
- fbi->var.vsync_len, sig_cfg) != 0) {
- mutex_unlock(&mx3_fbi->mutex);
- dev_err(fbi->device,
- "mx3fb: Error initializing panel.\n");
- return -EINVAL;
- }
- }
-
- sdc_set_window_pos(mx3fb, mx3_fbi->ipu_ch, 0, 0);
-
- mx3_fbi->cur_ipu_buf = 0;
-
- video->out_pixel_fmt = bpp_to_pixfmt(fbi->var.bits_per_pixel);
- video->out_width = fbi->var.xres;
- video->out_height = fbi->var.yres;
- video->out_stride = fbi->var.xres_virtual;
-
- if (mx3_fbi->blank == FB_BLANK_UNBLANK)
- sdc_enable_channel(mx3_fbi);
-
- mutex_unlock(&mx3_fbi->mutex);
-
- return 0;
-}
-
-/**
- * mx3fb_check_var() - check and adjust framebuffer variable parameters.
- * @var: framebuffer variable parameters
- * @fbi: framebuffer information pointer
- */
-static int mx3fb_check_var(struct fb_var_screeninfo *var, struct fb_info *fbi)
-{
- struct mx3fb_info *mx3_fbi = fbi->par;
- u32 vtotal;
- u32 htotal;
-
- dev_dbg(fbi->device, "%s\n", __func__);
-
- if (var->xres_virtual < var->xres)
- var->xres_virtual = var->xres;
- if (var->yres_virtual < var->yres)
- var->yres_virtual = 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 = 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 = 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;
- }
-
- if (var->pixclock < 1000) {
- htotal = var->xres + var->right_margin + var->hsync_len +
- var->left_margin;
- vtotal = var->yres + var->lower_margin + var->vsync_len +
- var->upper_margin;
- var->pixclock = (vtotal * htotal * 6UL) / 100UL;
- var->pixclock = KHZ2PICOS(var->pixclock);
- dev_dbg(fbi->device, "pixclock set for 60Hz refresh = %u ps\n",
- var->pixclock);
- }
-
- var->height = -1;
- var->width = -1;
- var->grayscale = 0;
-
- /* Preserve sync flags */
- var->sync |= mx3_fbi->sync;
- mx3_fbi->sync |= var->sync;
-
- return 0;
-}
-
-static u32 chan_to_field(unsigned int chan, struct fb_bitfield *bf)
-{
- chan &= 0xffff;
- chan >>= 16 - bf->length;
- return chan << bf->offset;
-}
-
-static int mx3fb_setcolreg(unsigned int regno, unsigned int red,
- unsigned int green, unsigned int blue,
- unsigned int trans, struct fb_info *fbi)
-{
- struct mx3fb_info *mx3_fbi = fbi->par;
- u32 val;
- int ret = 1;
-
- dev_dbg(fbi->device, "%s\n", __func__);
-
- mutex_lock(&mx3_fbi->mutex);
- /*
- * If greyscale is true, then we convert the RGB value
- * to greyscale no matter what visual we are using.
- */
- if (fbi->var.grayscale)
- red = green = blue = (19595 * red + 38470 * green +
- 7471 * blue) >> 16;
- switch (fbi->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 = fbi->pseudo_palette;
-
- val = chan_to_field(red, &fbi->var.red);
- val |= chan_to_field(green, &fbi->var.green);
- val |= chan_to_field(blue, &fbi->var.blue);
-
- pal[regno] = val;
-
- ret = 0;
- }
- break;
-
- case FB_VISUAL_STATIC_PSEUDOCOLOR:
- case FB_VISUAL_PSEUDOCOLOR:
- break;
- }
- mutex_unlock(&mx3_fbi->mutex);
-
- return ret;
-}
-
-/**
- * mx3fb_blank() - blank the display.
- */
-static int mx3fb_blank(int blank, struct fb_info *fbi)
-{
- struct mx3fb_info *mx3_fbi = fbi->par;
- struct mx3fb_data *mx3fb = mx3_fbi->mx3fb;
-
- dev_dbg(fbi->device, "%s\n", __func__);
-
- dev_dbg(fbi->device, "blank = %d\n", blank);
-
- if (mx3_fbi->blank == blank)
- return 0;
-
- mutex_lock(&mx3_fbi->mutex);
- mx3_fbi->blank = blank;
-
- switch (blank) {
- case FB_BLANK_POWERDOWN:
- case FB_BLANK_VSYNC_SUSPEND:
- case FB_BLANK_HSYNC_SUSPEND:
- case FB_BLANK_NORMAL:
- sdc_disable_channel(mx3_fbi);
- sdc_set_brightness(mx3fb, 0);
- break;
- case FB_BLANK_UNBLANK:
- sdc_enable_channel(mx3_fbi);
- sdc_set_brightness(mx3fb, mx3fb->backlight_level);
- break;
- }
- mutex_unlock(&mx3_fbi->mutex);
-
- return 0;
-}
-
-/**
- * mx3fb_pan_display() - pan or wrap the display
- * @var: variable screen buffer information.
- * @info: framebuffer information pointer.
- *
- * We look only at xoffset, yoffset and the FB_VMODE_YWRAP flag
- */
-static int mx3fb_pan_display(struct fb_var_screeninfo *var,
- struct fb_info *fbi)
-{
- struct mx3fb_info *mx3_fbi = fbi->par;
- u32 y_bottom;
- unsigned long base;
- off_t offset;
- dma_cookie_t cookie;
- struct scatterlist *sg = mx3_fbi->sg;
- struct dma_chan *dma_chan = &mx3_fbi->idmac_channel->dma_chan;
- struct dma_async_tx_descriptor *txd;
- int ret;
-
- dev_dbg(fbi->device, "%s [%c]\n", __func__,
- list_empty(&mx3_fbi->idmac_channel->queue) ? '-' : '+');
-
- if (var->xoffset > 0) {
- dev_dbg(fbi->device, "x panning not supported\n");
- return -EINVAL;
- }
-
- if (fbi->var.xoffset == var->xoffset &&
- fbi->var.yoffset == var->yoffset)
- return 0; /* No change, do nothing */
-
- y_bottom = var->yoffset;
-
- if (!(var->vmode & FB_VMODE_YWRAP))
- y_bottom += var->yres;
-
- if (y_bottom > fbi->var.yres_virtual)
- return -EINVAL;
-
- mutex_lock(&mx3_fbi->mutex);
-
- offset = (var->yoffset * var->xres_virtual + var->xoffset) *
- (var->bits_per_pixel / 8);
- base = fbi->fix.smem_start + offset;
-
- dev_dbg(fbi->device, "Updating SDC BG buf %d address=0x%08lX\n",
- mx3_fbi->cur_ipu_buf, base);
-
- /*
- * We enable the End of Frame interrupt, which will free a tx-descriptor,
- * which we will need for the next device_prep_slave_sg(). The
- * IRQ-handler will disable the IRQ again.
- */
- init_completion(&mx3_fbi->flip_cmpl);
- enable_irq(mx3_fbi->idmac_channel->eof_irq);
-
- ret = wait_for_completion_timeout(&mx3_fbi->flip_cmpl, HZ / 10);
- if (ret <= 0) {
- mutex_unlock(&mx3_fbi->mutex);
- dev_info(fbi->device, "Panning failed due to %s\n", ret < 0 ?
- "user interrupt" : "timeout");
- return ret ? : -ETIMEDOUT;
- }
-
- mx3_fbi->cur_ipu_buf = !mx3_fbi->cur_ipu_buf;
-
- sg_dma_address(&sg[mx3_fbi->cur_ipu_buf]) = base;
- sg_set_page(&sg[mx3_fbi->cur_ipu_buf],
- virt_to_page(fbi->screen_base + offset), fbi->fix.smem_len,
- offset_in_page(fbi->screen_base + offset));
-
- txd = dma_chan->device->device_prep_slave_sg(dma_chan, sg +
- mx3_fbi->cur_ipu_buf, 1, DMA_TO_DEVICE, DMA_PREP_INTERRUPT);
- if (!txd) {
- dev_err(fbi->device,
- "Error preparing a DMA transaction descriptor.\n");
- mutex_unlock(&mx3_fbi->mutex);
- return -EIO;
- }
-
- txd->callback_param = txd;
- txd->callback = mx3fb_dma_done;
-
- /*
- * Emulate original mx3fb behaviour: each new call to idmac_tx_submit()
- * should switch to another buffer
- */
- cookie = txd->tx_submit(txd);
- dev_dbg(fbi->device, "%d: Submit %p #%d\n", __LINE__, txd, cookie);
- if (cookie < 0) {
- dev_err(fbi->device,
- "Error updating SDC buf %d to address=0x%08lX\n",
- mx3_fbi->cur_ipu_buf, base);
- mutex_unlock(&mx3_fbi->mutex);
- return -EIO;
- }
-
- if (mx3_fbi->txd)
- async_tx_ack(mx3_fbi->txd);
- mx3_fbi->txd = txd;
-
- fbi->var.xoffset = var->xoffset;
- fbi->var.yoffset = var->yoffset;
-
- if (var->vmode & FB_VMODE_YWRAP)
- fbi->var.vmode |= FB_VMODE_YWRAP;
- else
- fbi->var.vmode &= ~FB_VMODE_YWRAP;
-
- mutex_unlock(&mx3_fbi->mutex);
-
- dev_dbg(fbi->device, "Update complete\n");
-
- return 0;
-}
-
-/*
- * This structure contains the pointers to the control functions that are
- * invoked by the core framebuffer driver to perform operations like
- * blitting, rectangle filling, copy regions and cursor definition.
- */
-static struct fb_ops mx3fb_ops = {
- .owner = THIS_MODULE,
- .fb_set_par = mx3fb_set_par,
- .fb_check_var = mx3fb_check_var,
- .fb_setcolreg = mx3fb_setcolreg,
- .fb_pan_display = mx3fb_pan_display,
- .fb_fillrect = cfb_fillrect,
- .fb_copyarea = cfb_copyarea,
- .fb_imageblit = cfb_imageblit,
- .fb_blank = mx3fb_blank,
-};
-
-#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.
- */
-
-/*
- * Suspends the framebuffer and blanks the screen. Power management support
- */
-static int mx3fb_suspend(struct platform_device *pdev, pm_message_t state)
-{
- struct mx3fb_data *drv_data = platform_get_drvdata(pdev);
- struct mx3fb_info *mx3_fbi = drv_data->fbi->par;
-
- acquire_console_sem();
- fb_set_suspend(drv_data->fbi, 1);
- release_console_sem();
-
- if (mx3_fbi->blank == FB_BLANK_UNBLANK) {
- sdc_disable_channel(mx3_fbi);
- sdc_set_brightness(mx3fb, 0);
-
- }
- return 0;
-}
-
-/*
- * Resumes the framebuffer and unblanks the screen. Power management support
- */
-static int mx3fb_resume(struct platform_device *pdev)
-{
- struct mx3fb_data *drv_data = platform_get_drvdata(pdev);
- struct mx3fb_info *mx3_fbi = drv_data->fbi->par;
-
- if (mx3_fbi->blank == FB_BLANK_UNBLANK) {
- sdc_enable_channel(mx3_fbi);
- sdc_set_brightness(mx3fb, drv_data->backlight_level);
- }
-
- acquire_console_sem();
- fb_set_suspend(drv_data->fbi, 0);
- release_console_sem();
-
- return 0;
-}
-#else
-#define mx3fb_suspend NULL
-#define mx3fb_resume NULL
-#endif
-
-/*
- * Main framebuffer functions
- */
-
-/**
- * mx3fb_map_video_memory() - allocates the DRAM memory for the frame buffer.
- * @fbi: framebuffer information pointer
- * @return: Error code indicating success or failure
- *
- * This buffer is remapped into a non-cached, non-buffered, memory region to
- * allow palette and pixel writes to occur without flushing the cache. Once this
- * area is remapped, all virtual memory access to the video memory should occur
- * at the new region.
- */
-static int mx3fb_map_video_memory(struct fb_info *fbi)
-{
- int retval = 0;
- dma_addr_t addr;
-
- fbi->screen_base = dma_alloc_writecombine(fbi->device,
- fbi->fix.smem_len,
- &addr, GFP_DMA);
-
- if (!fbi->screen_base) {
- dev_err(fbi->device, "Cannot allocate %u bytes framebuffer memory\n",
- fbi->fix.smem_len);
- retval = -EBUSY;
- goto err0;
- }
-
- fbi->fix.smem_start = addr;
-
- dev_dbg(fbi->device, "allocated fb @ p=0x%08x, v=0x%p, size=%d.\n",
- (uint32_t) fbi->fix.smem_start, fbi->screen_base, fbi->fix.smem_len);
-
- fbi->screen_size = fbi->fix.smem_len;
-
- /* Clear the screen */
- memset((char *)fbi->screen_base, 0, fbi->fix.smem_len);
-
- return 0;
-
-err0:
- fbi->fix.smem_len = 0;
- fbi->fix.smem_start = 0;
- fbi->screen_base = NULL;
- return retval;
-}
-
-/**
- * mx3fb_unmap_video_memory() - de-allocate frame buffer memory.
- * @fbi: framebuffer information pointer
- * @return: error code indicating success or failure
- */
-static int mx3fb_unmap_video_memory(struct fb_info *fbi)
-{
- dma_free_writecombine(fbi->device, fbi->fix.smem_len,
- fbi->screen_base, fbi->fix.smem_start);
-
- fbi->screen_base = 0;
- fbi->fix.smem_start = 0;
- fbi->fix.smem_len = 0;
- return 0;
-}
-
-/**
- * mx3fb_init_fbinfo() - initialize framebuffer information object.
- * @return: initialized framebuffer structure.
- */
-static struct fb_info *mx3fb_init_fbinfo(struct device *dev, struct fb_ops *ops)
-{
- struct fb_info *fbi;
- struct mx3fb_info *mx3fbi;
- int ret;
-
- /* Allocate sufficient memory for the fb structure */
- fbi = framebuffer_alloc(sizeof(struct mx3fb_info), dev);
- if (!fbi)
- return NULL;
-
- mx3fbi = fbi->par;
- mx3fbi->cookie = -EINVAL;
- mx3fbi->cur_ipu_buf = 0;
-
- fbi->var.activate = FB_ACTIVATE_NOW;
-
- fbi->fbops = ops;
- fbi->flags = FBINFO_FLAG_DEFAULT;
- fbi->pseudo_palette = mx3fbi->pseudo_palette;
-
- mutex_init(&mx3fbi->mutex);
-
- /* Allocate colormap */
- ret = fb_alloc_cmap(&fbi->cmap, 16, 0);
- if (ret < 0) {
- framebuffer_release(fbi);
- return NULL;
- }
-
- return fbi;
-}
-
-static int init_fb_chan(struct mx3fb_data *mx3fb, struct idmac_channel *ichan)
-{
- struct device *dev = mx3fb->dev;
- struct mx3fb_platform_data *mx3fb_pdata = dev->platform_data;
- const char *name = mx3fb_pdata->name;
- unsigned int irq;
- struct fb_info *fbi;
- struct mx3fb_info *mx3fbi;
- const struct fb_videomode *mode;
- int ret, num_modes;
-
- ichan->client = mx3fb;
- irq = ichan->eof_irq;
-
- if (ichan->dma_chan.chan_id != IDMAC_SDC_0)
- return -EINVAL;
-
- fbi = mx3fb_init_fbinfo(dev, &mx3fb_ops);
- if (!fbi)
- return -ENOMEM;
-
- if (!fb_mode)
- fb_mode = name;
-
- if (!fb_mode) {
- ret = -EINVAL;
- goto emode;
- }
-
- if (mx3fb_pdata->mode && mx3fb_pdata->num_modes) {
- mode = mx3fb_pdata->mode;
- num_modes = mx3fb_pdata->num_modes;
- } else {
- mode = mx3fb_modedb;
- num_modes = ARRAY_SIZE(mx3fb_modedb);
- }
-
- if (!fb_find_mode(&fbi->var, fbi, fb_mode, mode,
- num_modes, NULL, default_bpp)) {
- ret = -EBUSY;
- goto emode;
- }
-
- fb_videomode_to_modelist(mode, num_modes, &fbi->modelist);
-
- /* Default Y virtual size is 2x panel size */
- fbi->var.yres_virtual = fbi->var.yres * 2;
-
- mx3fb->fbi = fbi;
-
- /* set Display Interface clock period */
- mx3fb_write_reg(mx3fb, 0x00100010L, DI_HSP_CLK_PER);
- /* Might need to trigger HSP clock change - see 44.3.3.8.5 */
-
- sdc_set_brightness(mx3fb, 255);
- sdc_set_global_alpha(mx3fb, true, 0xFF);
- sdc_set_color_key(mx3fb, IDMAC_SDC_0, false, 0);
-
- mx3fbi = fbi->par;
- mx3fbi->idmac_channel = ichan;
- mx3fbi->ipu_ch = ichan->dma_chan.chan_id;
- mx3fbi->mx3fb = mx3fb;
- mx3fbi->blank = FB_BLANK_NORMAL;
-
- init_completion(&mx3fbi->flip_cmpl);
- disable_irq(ichan->eof_irq);
- dev_dbg(mx3fb->dev, "disabling irq %d\n", ichan->eof_irq);
- ret = mx3fb_set_par(fbi);
- if (ret < 0)
- goto esetpar;
-
- mx3fb_blank(FB_BLANK_UNBLANK, fbi);
-
- dev_info(dev, "mx3fb: fb registered, using mode %s\n", fb_mode);
-
- ret = register_framebuffer(fbi);
- if (ret < 0)
- goto erfb;
-
- return 0;
-
-erfb:
-esetpar:
-emode:
- fb_dealloc_cmap(&fbi->cmap);
- framebuffer_release(fbi);
-
- return ret;
-}
-
-static bool chan_filter(struct dma_chan *chan, void *arg)
-{
- struct dma_chan_request *rq = arg;
- struct device *dev;
- struct mx3fb_platform_data *mx3fb_pdata;
-
- if (!rq)
- return false;
-
- dev = rq->mx3fb->dev;
- mx3fb_pdata = dev->platform_data;
-
- return rq->id == chan->chan_id &&
- mx3fb_pdata->dma_dev == chan->device->dev;
-}
-
-static void release_fbi(struct fb_info *fbi)
-{
- mx3fb_unmap_video_memory(fbi);
-
- fb_dealloc_cmap(&fbi->cmap);
-
- unregister_framebuffer(fbi);
- framebuffer_release(fbi);
-}
-
-static int mx3fb_probe(struct platform_device *pdev)
-{
- struct device *dev = &pdev->dev;
- int ret;
- struct resource *sdc_reg;
- struct mx3fb_data *mx3fb;
- dma_cap_mask_t mask;
- struct dma_chan *chan;
- struct dma_chan_request rq;
-
- /*
- * Display Interface (DI) and Synchronous Display Controller (SDC)
- * registers
- */
- sdc_reg = platform_get_resource(pdev, IORESOURCE_MEM, 0);
- if (!sdc_reg)
- return -EINVAL;
-
- mx3fb = kzalloc(sizeof(*mx3fb), GFP_KERNEL);
- if (!mx3fb)
- return -ENOMEM;
-
- spin_lock_init(&mx3fb->lock);
-
- mx3fb->reg_base = ioremap(sdc_reg->start, resource_size(sdc_reg));
- if (!mx3fb->reg_base) {
- ret = -ENOMEM;
- goto eremap;
- }
-
- pr_debug("Remapped %x to %x at %p\n", sdc_reg->start, sdc_reg->end,
- mx3fb->reg_base);
-
- /* IDMAC interface */
- dmaengine_get();
-
- mx3fb->dev = dev;
- platform_set_drvdata(pdev, mx3fb);
-
- rq.mx3fb = mx3fb;
-
- dma_cap_zero(mask);
- dma_cap_set(DMA_SLAVE, mask);
- dma_cap_set(DMA_PRIVATE, mask);
- rq.id = IDMAC_SDC_0;
- chan = dma_request_channel(mask, chan_filter, &rq);
- if (!chan) {
- ret = -EBUSY;
- goto ersdc0;
- }
-
- ret = init_fb_chan(mx3fb, to_idmac_chan(chan));
- if (ret < 0)
- goto eisdc0;
-
- mx3fb->backlight_level = 255;
-
- return 0;
-
-eisdc0:
- dma_release_channel(chan);
-ersdc0:
- dmaengine_put();
- iounmap(mx3fb->reg_base);
-eremap:
- kfree(mx3fb);
- dev_err(dev, "mx3fb: failed to register fb\n");
- return ret;
-}
-
-static int mx3fb_remove(struct platform_device *dev)
-{
- struct mx3fb_data *mx3fb = platform_get_drvdata(dev);
- struct fb_info *fbi = mx3fb->fbi;
- struct mx3fb_info *mx3_fbi = fbi->par;
- struct dma_chan *chan;
-
- chan = &mx3_fbi->idmac_channel->dma_chan;
- release_fbi(fbi);
-
- dma_release_channel(chan);
- dmaengine_put();
-
- iounmap(mx3fb->reg_base);
- kfree(mx3fb);
- return 0;
-}
-
-static struct platform_driver mx3fb_driver = {
- .driver = {
- .name = MX3FB_NAME,
- },
- .probe = mx3fb_probe,
- .remove = mx3fb_remove,
- .suspend = mx3fb_suspend,
- .resume = mx3fb_resume,
-};
-
-/*
- * Parse user specified options (`video=mx3fb:')
- * example:
- * video=mx3fb:bpp=16
- */
-static int mx3fb_setup(void)
-{
-#ifndef MODULE
- char *opt, *options = NULL;
-
- if (fb_get_options("mx3fb", &options))
- return -ENODEV;
-
- if (!options || !*options)
- return 0;
-
- while ((opt = strsep(&options, ",")) != NULL) {
- if (!*opt)
- continue;
- if (!strncmp(opt, "bpp=", 4))
- default_bpp = simple_strtoul(opt + 4, NULL, 0);
- else
- fb_mode = opt;
- }
-#endif
-
- return 0;
-}
-
-static int __init mx3fb_init(void)
-{
- int ret = mx3fb_setup();
-
- if (ret < 0)
- return ret;
-
- ret = platform_driver_register(&mx3fb_driver);
- return ret;
-}
-
-static void __exit mx3fb_exit(void)
-{
- platform_driver_unregister(&mx3fb_driver);
-}
-
-module_init(mx3fb_init);
-module_exit(mx3fb_exit);
-
-MODULE_AUTHOR("Freescale Semiconductor, Inc.");
-MODULE_DESCRIPTION("MX3 framebuffer driver");
-MODULE_ALIAS("platform:" MX3FB_NAME);
-MODULE_LICENSE("GPL v2");
git.openpandora.org / pandora-kernel.git / commitdiff