#include <linux/fsl-diu-fb.h>
#include "edid.h"
-#define FSL_AOI_NUM 6 /* 5 AOIs and one dummy AOI */
- /* 1 for plane 0, 2 for plane 1&2 each */
+#define NUM_AOIS 5 /* 1 for plane 0, 2 for planes 1 & 2 each */
/* HW cursor parameters */
#define MAX_CURS 32
#define INT_PARERR 0x08 /* Display parameters error interrupt */
#define INT_LS_BF_VS 0x10 /* Lines before vsync. interrupt */
-struct diu_addr {
- void *vaddr; /* Virtual address */
- dma_addr_t paddr; /* Physical address */
- __u32 offset;
-};
-
/*
* List of supported video modes
*
static DEFINE_SPINLOCK(diu_lock);
-struct fsl_diu_data {
- struct fb_info *fsl_diu_info[FSL_AOI_NUM - 1];
- /*FSL_AOI_NUM has one dummy AOI */
- struct device_attribute dev_attr;
- struct diu_ad *dummy_ad;
- void *dummy_aoi_virt;
- unsigned int irq;
- int fb_enabled;
- enum fsl_diu_monitor_port monitor_port;
- struct diu __iomem *diu_reg;
- spinlock_t reg_lock;
- struct diu_addr ad;
- struct diu_addr gamma;
- struct diu_addr pallete;
- struct diu_addr cursor;
-};
-
enum mfb_index {
PLANE0 = 0, /* Plane 0, only one AOI that fills the screen */
PLANE1_AOI0, /* Plane 1, first AOI */
u8 *edid_data;
};
+/**
+ * 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);
+ u8 cursor[MAX_CURS * MAX_CURS * 2] __aligned(32);
+} __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[] = {
{
return diu_ops.valid_monitor_port(port);
}
-/**
- * fsl_diu_alloc - allocate memory for the DIU
- * @size: number of bytes to allocate
- * @param: returned physical address of memory
- *
- * This function allocates a physically-contiguous block of memory.
- */
-static void *fsl_diu_alloc(size_t size, phys_addr_t *phys)
-{
- void *virt;
-
- virt = alloc_pages_exact(size, GFP_DMA | __GFP_ZERO);
- if (virt)
- *phys = virt_to_phys(virt);
-
- return virt;
-}
-
-/**
- * fsl_diu_free - release DIU memory
- * @virt: pointer returned by fsl_diu_alloc()
- * @size: number of bytes allocated by fsl_diu_alloc()
- *
- * This function releases memory allocated by fsl_diu_alloc().
- */
-static void fsl_diu_free(void *virt, size_t size)
-{
- if (virt && size)
- free_pages_exact(virt, size);
-}
-
/*
* Workaround for failed writing desc register of planes.
* Needed with MPC5121 DIU rev 2.0 silicon.
{
struct mfb_info *pmfbi, *cmfbi, *mfbi = info->par;
struct diu_ad *ad = mfbi->ad;
- struct fsl_diu_data *machine_data = mfbi->parent;
- struct diu __iomem *hw = machine_data->diu_reg;
+ 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 = machine_data->fsl_diu_info[2]->par;
+ cmfbi = &data->mfb[2];
if (hw->desc[1] != ad->paddr) { /* AOI0 closed */
if (cmfbi->count > 0) /* AOI1 open */
ad->next_ad =
}
break;
case PLANE2_AOI0:
- cmfbi = machine_data->fsl_diu_info[4]->par;
+ cmfbi = &data->mfb[4];
if (hw->desc[2] != ad->paddr) { /* AOI0 closed */
if (cmfbi->count > 0) /* AOI1 open */
ad->next_ad =
}
break;
case PLANE1_AOI1:
- pmfbi = machine_data->fsl_diu_info[1]->par;
+ pmfbi = &data->mfb[1];
ad->next_ad = 0;
- if (hw->desc[1] == machine_data->dummy_ad->paddr)
+ 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 = machine_data->fsl_diu_info[3]->par;
+ pmfbi = &data->mfb[3];
ad->next_ad = 0;
- if (hw->desc[2] == machine_data->dummy_ad->paddr)
+ 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);
{
struct mfb_info *pmfbi, *cmfbi, *mfbi = info->par;
struct diu_ad *ad = mfbi->ad;
- struct fsl_diu_data *machine_data = mfbi->parent;
- struct diu __iomem *hw = machine_data->diu_reg;
+ struct fsl_diu_data *data = mfbi->parent;
+ struct diu __iomem *hw = data->diu_reg;
switch (mfbi->index) {
case PLANE0:
- if (hw->desc[0] != machine_data->dummy_ad->paddr)
- wr_reg_wa(&hw->desc[0], machine_data->dummy_ad->paddr);
+ if (hw->desc[0] != data->dummy_ad.paddr)
+ wr_reg_wa(&hw->desc[0], data->dummy_ad.paddr);
break;
case PLANE1_AOI0:
- cmfbi = machine_data->fsl_diu_info[2]->par;
+ 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], machine_data->dummy_ad->paddr);
+ wr_reg_wa(&hw->desc[1], data->dummy_ad.paddr);
/* close AOI 0 */
break;
case PLANE2_AOI0:
- cmfbi = machine_data->fsl_diu_info[4]->par;
+ 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], machine_data->dummy_ad->paddr);
+ wr_reg_wa(&hw->desc[2], data->dummy_ad.paddr);
/* close AOI 0 */
break;
case PLANE1_AOI1:
- pmfbi = machine_data->fsl_diu_info[1]->par;
+ 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], machine_data->dummy_ad->paddr);
+ wr_reg_wa(&hw->desc[1], data->dummy_ad.paddr);
/* close AOI 1 */
break;
case PLANE2_AOI1:
- pmfbi = machine_data->fsl_diu_info[3]->par;
+ 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], machine_data->dummy_ad->paddr);
+ 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 *machine_data = mfbi->parent;
- struct diu __iomem *hw = machine_data->diu_reg;
+ struct fsl_diu_data *data = mfbi->parent;
+ struct diu __iomem *hw = data->diu_reg;
- if (!machine_data->fb_enabled) {
- out_be32(&hw->diu_mode, MFB_MODE1);
- machine_data->fb_enabled++;
- }
+ 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 *machine_data = mfbi->parent;
- struct diu __iomem *hw = machine_data->diu_reg;
+ struct fsl_diu_data *data = mfbi->parent;
+ struct diu __iomem *hw = data->diu_reg;
- if (machine_data->fb_enabled) {
- out_be32(&hw->diu_mode, 0);
- machine_data->fb_enabled = 0;
- }
+ 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 *machine_data = mfbi->parent;
+ 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 = machine_data->fsl_diu_info[0]->var.xres;
- base_plane_height = machine_data->fsl_diu_info[0]->var.yres;
+ 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;
break;
case PLANE1_AOI0:
case PLANE2_AOI0:
- lower_aoi_mfbi = machine_data->fsl_diu_info[index+1]->par;
+ 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;
break;
case PLANE1_AOI1:
case PLANE2_AOI1:
- upper_aoi_mfbi = machine_data->fsl_diu_info[index-1]->par;
- upper_aoi_height =
- machine_data->fsl_diu_info[index-1]->var.yres;
+ 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)
{
struct fb_var_screeninfo *var = &info->var;
struct mfb_info *mfbi = info->par;
- struct fsl_diu_data *machine_data = mfbi->parent;
+ struct fsl_diu_data *data = mfbi->parent;
struct diu __iomem *hw;
int i, j;
- char __iomem *cursor_base, *gamma_table_base;
+ u8 *gamma_table_base;
u32 temp;
- hw = machine_data->diu_reg;
+ hw = data->diu_reg;
+
+ diu_ops.set_monitor_port(data->monitor_port);
+ gamma_table_base = data->gamma;
- diu_ops.set_monitor_port(machine_data->monitor_port);
- gamma_table_base = machine_data->gamma.vaddr;
- cursor_base = machine_data->cursor.vaddr;
/* Prep for DIU init - gamma table, cursor table */
for (i = 0; i <= 2; i++)
for (j = 0; j <= 255; j++)
*gamma_table_base++ = j;
- diu_ops.set_gamma_table(machine_data->monitor_port,
- machine_data->gamma.vaddr);
+ 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, machine_data->gamma.paddr);
- out_be32(&hw->cursor, machine_data->cursor.paddr);
+ out_be32(&hw->gamma, DMA_ADDR(data, gamma));
+ out_be32(&hw->cursor, DMA_ADDR(data, cursor));
out_be32(&hw->bgnd, 0x007F7F7F); /* BGND */
out_be32(&hw->bgnd_wb, 0); /* BGND_WB */
static int map_video_memory(struct fb_info *info)
{
- phys_addr_t phys;
u32 smem_len = info->fix.line_length * info->var.yres_virtual;
+ void *p;
- info->screen_base = fsl_diu_alloc(smem_len, &phys);
- if (info->screen_base == NULL) {
+ 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->fix.smem_start = (unsigned long) phys;
+ 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;
static void unmap_video_memory(struct fb_info *info)
{
- fsl_diu_free(info->screen_base, info->fix.smem_len);
+ 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);
}
/*
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, blue, green, 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, 0, 1, 3, 8, 8, 8, 8);
+ case 24:
+ /* 0x88082219 */
+ return MAKE_PF(4, 0, 1, 2, 2, 0, 8, 8, 8);
+ 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;
+ }
+}
+
/*
* Using the fb_var_screeninfo in fb_info we set the resolution of this
* particular framebuffer. This function alters the fb_fix_screeninfo stored
unsigned long len;
struct fb_var_screeninfo *var = &info->var;
struct mfb_info *mfbi = info->par;
- struct fsl_diu_data *machine_data = mfbi->parent;
+ struct fsl_diu_data *data = mfbi->parent;
struct diu_ad *ad = mfbi->ad;
struct diu __iomem *hw;
- hw = machine_data->diu_reg;
+ hw = data->diu_reg;
set_fix(info);
mfbi->cursor_reset = 1;
}
}
- ad->pix_fmt = diu_ops.get_pixel_format(machine_data->monitor_port,
- var->bits_per_pixel);
+ 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;
.fb_release = fsl_diu_release,
};
-static int init_fbinfo(struct fb_info *info)
-{
- struct mfb_info *mfbi = info->par;
-
- info->device = NULL;
- info->var.activate = FB_ACTIVATE_NOW;
- info->fbops = &fsl_diu_ops;
- info->flags = FBINFO_FLAG_DEFAULT;
- info->pseudo_palette = &mfbi->pseudo_palette;
-
- /* Allocate colormap */
- fb_alloc_cmap(&info->cmap, 16, 0);
- return 0;
-}
-
static int __devinit install_fb(struct fb_info *info)
{
int rc;
unsigned int dbsize = ARRAY_SIZE(fsl_diu_mode_db);
int has_default_mode = 1;
- if (init_fbinfo(info))
- return -EINVAL;
+ 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 (mfbi->edid_data) {
return IRQ_NONE;
}
-static int request_irq_local(struct fsl_diu_data *machine_data)
+static int request_irq_local(struct fsl_diu_data *data)
{
- struct diu __iomem *hw = machine_data->diu_reg;
+ struct diu __iomem *hw = data->diu_reg;
u32 ints;
int ret;
/* Read to clear the status */
in_be32(&hw->int_status);
- ret = request_irq(machine_data->irq, fsl_diu_isr, 0, "fsl-diu-fb", hw);
+ ret = request_irq(data->irq, fsl_diu_isr, 0, "fsl-diu-fb", hw);
if (!ret) {
ints = INT_PARERR | INT_LS_BF_VS;
#if !defined(CONFIG_NOT_COHERENT_CACHE)
return ret;
}
-static void free_irq_local(struct fsl_diu_data *machine_data)
+static void free_irq_local(struct fsl_diu_data *data)
{
- struct diu __iomem *hw = machine_data->diu_reg;
+ struct diu __iomem *hw = data->diu_reg;
/* Disable all LCDC interrupt */
out_be32(&hw->int_mask, 0x1f);
- free_irq(machine_data->irq, NULL);
+ free_irq(data->irq, NULL);
}
#ifdef CONFIG_PM
*/
static int fsl_diu_suspend(struct platform_device *ofdev, pm_message_t state)
{
- struct fsl_diu_data *machine_data;
+ struct fsl_diu_data *data;
- machine_data = dev_get_drvdata(&ofdev->dev);
- disable_lcdc(machine_data->fsl_diu_info[0]);
+ data = dev_get_drvdata(&ofdev->dev);
+ disable_lcdc(data->fsl_diu_info[0]);
return 0;
}
static int fsl_diu_resume(struct platform_device *ofdev)
{
- struct fsl_diu_data *machine_data;
+ struct fsl_diu_data *data;
- machine_data = dev_get_drvdata(&ofdev->dev);
- enable_lcdc(machine_data->fsl_diu_info[0]);
+ data = dev_get_drvdata(&ofdev->dev);
+ enable_lcdc(data->fsl_diu_info[0]);
return 0;
}
#define fsl_diu_resume NULL
#endif /* CONFIG_PM */
-/* Align to 64-bit(8-byte), 32-byte, etc. */
-static int allocate_buf(struct device *dev, struct diu_addr *buf, u32 size,
- u32 bytes_align)
-{
- u32 offset;
- dma_addr_t mask;
-
- buf->vaddr =
- dma_alloc_coherent(dev, size + bytes_align, &buf->paddr,
- GFP_DMA | __GFP_ZERO);
- if (!buf->vaddr)
- return -ENOMEM;
-
- mask = bytes_align - 1;
- offset = buf->paddr & mask;
- if (offset) {
- buf->offset = bytes_align - offset;
- buf->paddr = buf->paddr + offset;
- } else
- buf->offset = 0;
-
- return 0;
-}
-
-static void free_buf(struct device *dev, struct diu_addr *buf, u32 size,
- u32 bytes_align)
-{
- dma_free_coherent(dev, size + bytes_align, buf->vaddr,
- buf->paddr - buf->offset);
-}
-
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 *machine_data =
+ struct fsl_diu_data *data =
container_of(attr, struct fsl_diu_data, dev_attr);
- old_monitor_port = machine_data->monitor_port;
- machine_data->monitor_port = fsl_diu_name_to_port(buf);
+ old_monitor_port = data->monitor_port;
+ data->monitor_port = fsl_diu_name_to_port(buf);
- if (old_monitor_port != machine_data->monitor_port) {
+ 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. */
- fsl_diu_set_par(machine_data->fsl_diu_info[0]);
- fsl_diu_set_par(machine_data->fsl_diu_info[1]);
- fsl_diu_set_par(machine_data->fsl_diu_info[2]);
- fsl_diu_set_par(machine_data->fsl_diu_info[3]);
- fsl_diu_set_par(machine_data->fsl_diu_info[4]);
+ 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 *machine_data =
+ struct fsl_diu_data *data =
container_of(attr, struct fsl_diu_data, dev_attr);
- switch (machine_data->monitor_port) {
+ switch (data->monitor_port) {
case FSL_DIU_PORT_DVI:
return sprintf(buf, "DVI\n");
case FSL_DIU_PORT_LVDS:
{
struct device_node *np = pdev->dev.of_node;
struct mfb_info *mfbi;
- phys_addr_t dummy_ad_addr = 0;
- int ret, i, error = 0;
- struct fsl_diu_data *machine_data;
+ struct fsl_diu_data *data;
int diu_mode;
+ dma_addr_t dma_addr; /* DMA addr of fsl_diu_data struct */
+ unsigned int i;
+ int ret;
- machine_data = kzalloc(sizeof(struct fsl_diu_data), GFP_KERNEL);
- if (!machine_data)
+ data = dma_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(&machine_data->reg_lock);
+ spin_lock_init(&data->reg_lock);
- for (i = 0; i < ARRAY_SIZE(machine_data->fsl_diu_info); i++) {
- machine_data->fsl_diu_info[i] =
- framebuffer_alloc(sizeof(struct mfb_info), &pdev->dev);
- if (!machine_data->fsl_diu_info[i]) {
- dev_err(&pdev->dev, "cannot allocate memory\n");
- ret = -ENOMEM;
- goto error2;
- }
- mfbi = machine_data->fsl_diu_info[i]->par;
+ 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 = machine_data;
+ mfbi->parent = data;
+ mfbi->ad = &data->ad[i];
if (mfbi->index == PLANE0) {
const u8 *prop;
}
}
- machine_data->diu_reg = of_iomap(np, 0);
- if (!machine_data->diu_reg) {
+ data->diu_reg = of_iomap(np, 0);
+ if (!data->diu_reg) {
dev_err(&pdev->dev, "cannot map DIU registers\n");
ret = -EFAULT;
- goto error2;
+ goto error;
}
- diu_mode = in_be32(&machine_data->diu_reg->diu_mode);
+ diu_mode = in_be32(&data->diu_reg->diu_mode);
if (diu_mode == MFB_MODE0)
- out_be32(&machine_data->diu_reg->diu_mode, 0); /* disable DIU */
+ out_be32(&data->diu_reg->diu_mode, 0); /* disable DIU */
/* Get the IRQ of the DIU */
- machine_data->irq = irq_of_parse_and_map(np, 0);
+ data->irq = irq_of_parse_and_map(np, 0);
- if (!machine_data->irq) {
+ if (!data->irq) {
dev_err(&pdev->dev, "could not get DIU IRQ\n");
ret = -EINVAL;
goto error;
}
- machine_data->monitor_port = monitor_port;
-
- /* Area descriptor memory pool aligns to 64-bit boundary */
- if (allocate_buf(&pdev->dev, &machine_data->ad,
- sizeof(struct diu_ad) * FSL_AOI_NUM, 8))
- return -ENOMEM;
-
- /* Get memory for Gamma Table - 32-byte aligned memory */
- if (allocate_buf(&pdev->dev, &machine_data->gamma, 768, 32)) {
- ret = -ENOMEM;
- goto error;
- }
-
- /* For performance, cursor bitmap buffer aligns to 32-byte boundary */
- if (allocate_buf(&pdev->dev, &machine_data->cursor,
- MAX_CURS * MAX_CURS * 2, 32)) {
- ret = -ENOMEM;
- goto error;
- }
-
- i = ARRAY_SIZE(machine_data->fsl_diu_info);
- machine_data->dummy_ad = (struct diu_ad *)((u32)machine_data->ad.vaddr +
- machine_data->ad.offset) + i;
- machine_data->dummy_ad->paddr = machine_data->ad.paddr +
- i * sizeof(struct diu_ad);
- machine_data->dummy_aoi_virt = fsl_diu_alloc(64, &dummy_ad_addr);
- if (!machine_data->dummy_aoi_virt) {
- ret = -ENOMEM;
- goto error;
- }
- machine_data->dummy_ad->addr = cpu_to_le32(dummy_ad_addr);
- machine_data->dummy_ad->pix_fmt = 0x88882317;
- machine_data->dummy_ad->src_size_g_alpha = cpu_to_le32((4 << 12) | 4);
- machine_data->dummy_ad->aoi_size = cpu_to_le32((4 << 16) | 2);
- machine_data->dummy_ad->offset_xyi = 0;
- machine_data->dummy_ad->offset_xyd = 0;
- machine_data->dummy_ad->next_ad = 0;
+ 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 display splash screen if it was pre-initialized
* by the bootloader, set dummy area descriptor otherwise.
*/
if (diu_mode == MFB_MODE0)
- out_be32(&machine_data->diu_reg->desc[0],
- machine_data->dummy_ad->paddr);
-
- out_be32(&machine_data->diu_reg->desc[1], machine_data->dummy_ad->paddr);
- out_be32(&machine_data->diu_reg->desc[2], machine_data->dummy_ad->paddr);
-
- for (i = 0; i < ARRAY_SIZE(machine_data->fsl_diu_info); i++) {
- machine_data->fsl_diu_info[i]->fix.smem_start = 0;
- mfbi = machine_data->fsl_diu_info[i]->par;
- mfbi->ad = (struct diu_ad *)((u32)machine_data->ad.vaddr
- + machine_data->ad.offset) + i;
- mfbi->ad->paddr =
- machine_data->ad.paddr + i * sizeof(struct diu_ad);
- ret = install_fb(machine_data->fsl_diu_info[i]);
+ out_be32(&data->diu_reg->desc[0], data->dummy_ad.paddr);
+
+ out_be32(&data->diu_reg->desc[1], data->dummy_ad.paddr);
+ out_be32(&data->diu_reg->desc[2], data->dummy_ad.paddr);
+
+ 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);
goto error;
}
}
- if (request_irq_local(machine_data)) {
+ if (request_irq_local(data)) {
dev_err(&pdev->dev, "could not claim irq\n");
goto error;
}
- sysfs_attr_init(&machine_data->dev_attr.attr);
- machine_data->dev_attr.attr.name = "monitor";
- machine_data->dev_attr.attr.mode = S_IRUGO|S_IWUSR;
- machine_data->dev_attr.show = show_monitor;
- machine_data->dev_attr.store = store_monitor;
- error = device_create_file(machine_data->fsl_diu_info[0]->dev,
- &machine_data->dev_attr);
- if (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",
- machine_data->dev_attr.attr.name);
+ data->dev_attr.attr.name);
}
- dev_set_drvdata(&pdev->dev, machine_data);
+ dev_set_drvdata(&pdev->dev, data);
return 0;
error:
- for (i = 0; i < ARRAY_SIZE(machine_data->fsl_diu_info); i++)
- uninstall_fb(machine_data->fsl_diu_info[i]);
-
- if (machine_data->ad.vaddr)
- free_buf(&pdev->dev, &machine_data->ad,
- sizeof(struct diu_ad) * FSL_AOI_NUM, 8);
- if (machine_data->gamma.vaddr)
- free_buf(&pdev->dev, &machine_data->gamma, 768, 32);
- if (machine_data->cursor.vaddr)
- free_buf(&pdev->dev, &machine_data->cursor,
- MAX_CURS * MAX_CURS * 2, 32);
- if (machine_data->dummy_aoi_virt)
- fsl_diu_free(machine_data->dummy_aoi_virt, 64);
- iounmap(machine_data->diu_reg);
-
-error2:
- for (i = 0; i < ARRAY_SIZE(machine_data->fsl_diu_info); i++)
- if (machine_data->fsl_diu_info[i])
- framebuffer_release(machine_data->fsl_diu_info[i]);
- kfree(machine_data);
+ for (i = 0; i < NUM_AOIS; i++)
+ uninstall_fb(&data->fsl_diu_info[i]);
+
+ iounmap(data->diu_reg);
+
+ dma_free_coherent(&pdev->dev, sizeof(struct fsl_diu_data), data,
+ data->dma_addr);
return ret;
}
static int fsl_diu_remove(struct platform_device *pdev)
{
- struct fsl_diu_data *machine_data;
+ struct fsl_diu_data *data;
int i;
- machine_data = dev_get_drvdata(&pdev->dev);
- disable_lcdc(machine_data->fsl_diu_info[0]);
- free_irq_local(machine_data);
- for (i = 0; i < ARRAY_SIZE(machine_data->fsl_diu_info); i++)
- uninstall_fb(machine_data->fsl_diu_info[i]);
- if (machine_data->ad.vaddr)
- free_buf(&pdev->dev, &machine_data->ad,
- sizeof(struct diu_ad) * FSL_AOI_NUM, 8);
- if (machine_data->gamma.vaddr)
- free_buf(&pdev->dev, &machine_data->gamma, 768, 32);
- if (machine_data->cursor.vaddr)
- free_buf(&pdev->dev, &machine_data->cursor,
- MAX_CURS * MAX_CURS * 2, 32);
- if (machine_data->dummy_aoi_virt)
- fsl_diu_free(machine_data->dummy_aoi_virt, 64);
- iounmap(machine_data->diu_reg);
- for (i = 0; i < ARRAY_SIZE(machine_data->fsl_diu_info); i++)
- if (machine_data->fsl_diu_info[i])
- framebuffer_release(machine_data->fsl_diu_info[i]);
- kfree(machine_data);
+ data = dev_get_drvdata(&pdev->dev);
+ disable_lcdc(&data->fsl_diu_info[0]);
+ free_irq_local(data);
+
+ for (i = 0; i < NUM_AOIS; i++)
+ uninstall_fb(&data->fsl_diu_info[i]);
+
+ iounmap(data->diu_reg);
+
+ dma_free_coherent(&pdev->dev, sizeof(struct fsl_diu_data), data,
+ data->dma_addr);
return 0;
}
projects / cascardo / linux.git / blobdiff