* Copyright (C) 2003 Nokia Corporation
* Author: Juha Yrjölä <juha.yrjola@nokia.com>
* DMA channel linking for 1610 by Samuel Ortiz <samuel.ortiz@nokia.com>
- * Graphics DMA and LCD DMA graphics tranformations
- * by Imre Deak <imre.deak@nokia.com>
*
* Support functions for the OMAP internal DMA channels.
*
#include <asm/dma.h>
#include <asm/io.h>
-#include <asm/arch/tc.h>
-
#define OMAP_DMA_ACTIVE 0x01
#define OMAP_DMA_CCR_EN (1 << 7)
omap_writew(0, lch_base + i);
}
-void omap_set_dma_priority(int dst_port, int priority)
-{
- unsigned long reg;
- u32 l;
-
- switch (dst_port) {
- case OMAP_DMA_PORT_OCP_T1: /* FFFECC00 */
- reg = OMAP_TC_OCPT1_PRIOR;
- break;
- case OMAP_DMA_PORT_OCP_T2: /* FFFECCD0 */
- reg = OMAP_TC_OCPT2_PRIOR;
- break;
- case OMAP_DMA_PORT_EMIFF: /* FFFECC08 */
- reg = OMAP_TC_EMIFF_PRIOR;
- break;
- case OMAP_DMA_PORT_EMIFS: /* FFFECC04 */
- reg = OMAP_TC_EMIFS_PRIOR;
- break;
- default:
- BUG();
- return;
- }
- l = omap_readl(reg);
- l &= ~(0xf << 8);
- l |= (priority & 0xf) << 8;
- omap_writel(l, reg);
-}
-
void omap_set_dma_transfer_params(int lch, int data_type, int elem_count,
int frame_count, int sync_mode)
{
omap_writew(frame_count, OMAP_DMA_CFN(lch));
}
-void omap_set_dma_color_mode(int lch, enum omap_dma_color_mode mode, u32 color)
+void omap_set_dma_constant_fill(int lch, u32 color)
{
u16 w;
- BUG_ON(omap_dma_in_1510_mode());
-
- w = omap_readw(OMAP_DMA_CCR2(lch)) & ~0x03;
- switch (mode) {
- case OMAP_DMA_CONSTANT_FILL:
- w |= 0x01;
- break;
- case OMAP_DMA_TRANSPARENT_COPY:
- w |= 0x02;
- break;
- case OMAP_DMA_COLOR_DIS:
- break;
- default:
+#ifdef CONFIG_DEBUG_KERNEL
+ if (omap_dma_in_1510_mode()) {
+ printk(KERN_ERR "OMAP DMA constant fill not available in 1510 mode.");
BUG();
+ return;
}
+#endif
+ w = omap_readw(OMAP_DMA_CCR2(lch)) & ~0x03;
+ w |= 0x01;
omap_writew(w, OMAP_DMA_CCR2(lch));
+ omap_writew((u16)color, OMAP_DMA_COLOR_L(lch));
+ omap_writew((u16)(color >> 16), OMAP_DMA_COLOR_U(lch));
+
w = omap_readw(OMAP_DMA_LCH_CTRL(lch)) & ~0x0f;
- /* Default is channel type 2D */
- if (mode) {
- omap_writew((u16)color, OMAP_DMA_COLOR_L(lch));
- omap_writew((u16)(color >> 16), OMAP_DMA_COLOR_U(lch));
- w |= 1; /* Channel type G */
- }
+ w |= 1; /* Channel type G */
omap_writew(w, OMAP_DMA_LCH_CTRL(lch));
}
+void omap_set_dma_transparent_copy(int lch, u32 color)
+{
+ u16 w;
+
+#ifdef CONFIG_DEBUG_KERNEL
+ if (omap_dma_in_1510_mode()) {
+ printk(KERN_ERR "OMAP DMA transparent copy not available in 1510 mode.");
+ BUG();
+ }
+#endif
+ w = omap_readw(OMAP_DMA_CCR2(lch)) & ~0x03;
+ w |= 0x02;
+ omap_writew(w, OMAP_DMA_CCR2(lch));
+
+ omap_writew((u16)color, OMAP_DMA_COLOR_L(lch));
+ omap_writew((u16)(color >> 16), OMAP_DMA_COLOR_U(lch));
+
+ w = omap_readw(OMAP_DMA_LCH_CTRL(lch)) & ~0x0f;
+ w |= 1; /* Channel type G */
+ omap_writew(w, OMAP_DMA_LCH_CTRL(lch));
+}
void omap_set_dma_src_params(int lch, int src_port, int src_amode,
unsigned long src_start)
omap_writew(w, OMAP_DMA_CSDP(lch));
}
-void omap_set_dma_src_burst_mode(int lch, enum omap_dma_burst_mode burst_mode)
+void omap_set_dma_src_burst_mode(int lch, int burst_mode)
{
u16 w;
w = omap_readw(OMAP_DMA_CSDP(lch)) & ~(0x03 << 7);
switch (burst_mode) {
- case OMAP_DMA_DATA_BURST_DIS:
- break;
case OMAP_DMA_DATA_BURST_4:
w |= (0x01 << 7);
break;
case OMAP_DMA_DATA_BURST_8:
- /* not supported by current hardware
- * w |= (0x03 << 7);
- * fall through
- */
+ w |= (0x03 << 7);
+ break;
default:
+ printk(KERN_ERR "Invalid DMA burst mode\n");
BUG();
+ return;
}
omap_writew(w, OMAP_DMA_CSDP(lch));
}
omap_writew(w, OMAP_DMA_CSDP(lch));
}
-void omap_set_dma_dest_burst_mode(int lch, enum omap_dma_burst_mode burst_mode)
+void omap_set_dma_dest_burst_mode(int lch, int burst_mode)
{
u16 w;
w = omap_readw(OMAP_DMA_CSDP(lch)) & ~(0x03 << 14);
switch (burst_mode) {
- case OMAP_DMA_DATA_BURST_DIS:
- break;
case OMAP_DMA_DATA_BURST_4:
w |= (0x01 << 14);
break;
chan->data = data;
chan->enabled_irqs = OMAP_DMA_TOUT_IRQ | OMAP_DMA_DROP_IRQ | OMAP_DMA_BLOCK_IRQ;
- if (cpu_is_omap16xx() || cpu_is_omap730()) {
+ if (cpu_is_omap1610() || cpu_is_omap5912() || cpu_is_omap730() || cpu_is_omap1710()) {
/* If the sync device is set, configure it dynamically. */
if (dev_id != 0) {
set_gdma_dev(free_ch + 1, dev_id);
void (* callback)(u16 status, void *data);
void *cb_data;
- int active;
unsigned long addr, size;
int rotate, data_type, xres, yres;
- int vxres;
- int mirror;
- int xscale, yscale;
- int ext_ctrl;
- int src_port;
- int single_transfer;
} lcd_dma;
void omap_set_lcd_dma_b1(unsigned long addr, u16 fb_xres, u16 fb_yres,
lcd_dma.yres = fb_yres;
}
-void omap_set_lcd_dma_src_port(int port)
-{
- lcd_dma.src_port = port;
-}
-
-void omap_set_lcd_dma_ext_controller(int external)
-{
- lcd_dma.ext_ctrl = external;
-}
-
-void omap_set_lcd_dma_single_transfer(int single)
-{
- lcd_dma.single_transfer = single;
-}
-
-
-void omap_set_lcd_dma_b1_rotation(int rotate)
-{
- if (omap_dma_in_1510_mode()) {
- printk(KERN_ERR "DMA rotation is not supported in 1510 mode\n");
- BUG();
- return;
- }
- lcd_dma.rotate = rotate;
-}
-
-void omap_set_lcd_dma_b1_mirror(int mirror)
-{
- if (omap_dma_in_1510_mode()) {
- printk(KERN_ERR "DMA mirror is not supported in 1510 mode\n");
- BUG();
- }
- lcd_dma.mirror = mirror;
-}
-
-void omap_set_lcd_dma_b1_vxres(unsigned long vxres)
-{
- if (omap_dma_in_1510_mode()) {
- printk(KERN_ERR "DMA virtual resulotion is not supported "
- "in 1510 mode\n");
- BUG();
- }
- lcd_dma.vxres = vxres;
-}
-
-void omap_set_lcd_dma_b1_scale(unsigned int xscale, unsigned int yscale)
-{
- if (omap_dma_in_1510_mode()) {
- printk(KERN_ERR "DMA scale is not supported in 1510 mode\n");
- BUG();
- }
- lcd_dma.xscale = xscale;
- lcd_dma.yscale = yscale;
-}
-
static void set_b1_regs(void)
{
unsigned long top, bottom;
int es;
- u16 w;
- unsigned long en, fn;
- long ei, fi;
- unsigned long vxres;
- unsigned int xscale, yscale;
+ u16 w, en, fn;
+ s16 ei;
+ s32 fi;
+ u32 l;
switch (lcd_dma.data_type) {
case OMAP_DMA_DATA_TYPE_S8:
return;
}
- vxres = lcd_dma.vxres ? lcd_dma.vxres : lcd_dma.xres;
- xscale = lcd_dma.xscale ? lcd_dma.xscale : 1;
- yscale = lcd_dma.yscale ? lcd_dma.yscale : 1;
- BUG_ON(vxres < lcd_dma.xres);
-#define PIXADDR(x,y) (lcd_dma.addr + ((y) * vxres * yscale + (x) * xscale) * es)
-#define PIXSTEP(sx, sy, dx, dy) (PIXADDR(dx, dy) - PIXADDR(sx, sy) - es + 1)
- switch (lcd_dma.rotate) {
- case 0:
- if (!lcd_dma.mirror) {
- top = PIXADDR(0, 0);
- bottom = PIXADDR(lcd_dma.xres - 1, lcd_dma.yres - 1);
- /* 1510 DMA requires the bottom address to be 2 more
- * than the actual last memory access location. */
- if (omap_dma_in_1510_mode() &&
- lcd_dma.data_type == OMAP_DMA_DATA_TYPE_S32)
- bottom += 2;
- ei = PIXSTEP(0, 0, 1, 0);
- fi = PIXSTEP(lcd_dma.xres - 1, 0, 0, 1);
- } else {
- top = PIXADDR(lcd_dma.xres - 1, 0);
- bottom = PIXADDR(0, lcd_dma.yres - 1);
- ei = PIXSTEP(1, 0, 0, 0);
- fi = PIXSTEP(0, 0, lcd_dma.xres - 1, 1);
- }
- en = lcd_dma.xres;
- fn = lcd_dma.yres;
- break;
- case 90:
- if (!lcd_dma.mirror) {
- top = PIXADDR(0, lcd_dma.yres - 1);
- bottom = PIXADDR(lcd_dma.xres - 1, 0);
- ei = PIXSTEP(0, 1, 0, 0);
- fi = PIXSTEP(0, 0, 1, lcd_dma.yres - 1);
- } else {
- top = PIXADDR(lcd_dma.xres - 1, lcd_dma.yres - 1);
- bottom = PIXADDR(0, 0);
- ei = PIXSTEP(0, 1, 0, 0);
- fi = PIXSTEP(1, 0, 0, lcd_dma.yres - 1);
- }
- en = lcd_dma.yres;
- fn = lcd_dma.xres;
- break;
- case 180:
- if (!lcd_dma.mirror) {
- top = PIXADDR(lcd_dma.xres - 1, lcd_dma.yres - 1);
- bottom = PIXADDR(0, 0);
- ei = PIXSTEP(1, 0, 0, 0);
- fi = PIXSTEP(0, 1, lcd_dma.xres - 1, 0);
- } else {
- top = PIXADDR(0, lcd_dma.yres - 1);
- bottom = PIXADDR(lcd_dma.xres - 1, 0);
- ei = PIXSTEP(0, 0, 1, 0);
- fi = PIXSTEP(lcd_dma.xres - 1, 1, 0, 0);
- }
+ if (lcd_dma.rotate == 0) {
+ top = lcd_dma.addr;
+ bottom = lcd_dma.addr + (lcd_dma.xres * lcd_dma.yres - 1) * es;
+ /* 1510 DMA requires the bottom address to be 2 more than the
+ * actual last memory access location. */
+ if (omap_dma_in_1510_mode() &&
+ lcd_dma.data_type == OMAP_DMA_DATA_TYPE_S32)
+ bottom += 2;
en = lcd_dma.xres;
fn = lcd_dma.yres;
- break;
- case 270:
- if (!lcd_dma.mirror) {
- top = PIXADDR(lcd_dma.xres - 1, 0);
- bottom = PIXADDR(0, lcd_dma.yres - 1);
- ei = PIXSTEP(0, 0, 0, 1);
- fi = PIXSTEP(1, lcd_dma.yres - 1, 0, 0);
- } else {
- top = PIXADDR(0, 0);
- bottom = PIXADDR(lcd_dma.xres - 1, lcd_dma.yres - 1);
- ei = PIXSTEP(0, 0, 0, 1);
- fi = PIXSTEP(0, lcd_dma.yres - 1, 1, 0);
- }
+ ei = 0;
+ fi = 0;
+ } else {
+ top = lcd_dma.addr + (lcd_dma.xres - 1) * es;
+ bottom = lcd_dma.addr + (lcd_dma.yres - 1) * lcd_dma.xres * es;
en = lcd_dma.yres;
fn = lcd_dma.xres;
- break;
- default:
- BUG();
- return; /* Supress warning about uninitialized vars */
+ ei = (lcd_dma.xres - 1) * es + 1;
+ fi = -(lcd_dma.xres * (lcd_dma.yres - 1) + 2) * 2 + 1;
}
if (omap_dma_in_1510_mode()) {
w |= lcd_dma.data_type;
omap_writew(w, OMAP1610_DMA_LCD_CSDP);
- w = omap_readw(OMAP1610_DMA_LCD_CTRL);
- /* Always set the source port as SDRAM for now*/
- w &= ~(0x03 << 6);
- if (lcd_dma.ext_ctrl)
- w |= 1 << 8;
- else
- w &= ~(1 << 8);
- if (lcd_dma.callback != NULL)
- w |= 1 << 1; /* Block interrupt enable */
- else
- w &= ~(1 << 1);
- omap_writew(w, OMAP1610_DMA_LCD_CTRL);
-
- if (!(lcd_dma.rotate || lcd_dma.mirror ||
- lcd_dma.vxres || lcd_dma.xscale || lcd_dma.yscale))
+ if (!lcd_dma.rotate)
return;
- w = omap_readw(OMAP1610_DMA_LCD_CCR);
+ /* Rotation stuff */
+ l = omap_readw(OMAP1610_DMA_LCD_CSDP);
+ /* Disable burst access */
+ l &= ~(0x03 << 7);
+ omap_writew(l, OMAP1610_DMA_LCD_CSDP);
+
+ l = omap_readw(OMAP1610_DMA_LCD_CCR);
/* Set the double-indexed addressing mode */
- w |= (0x03 << 12);
- omap_writew(w, OMAP1610_DMA_LCD_CCR);
+ l |= (0x03 << 12);
+ omap_writew(l, OMAP1610_DMA_LCD_CCR);
omap_writew(ei, OMAP1610_DMA_LCD_SRC_EI_B1);
omap_writew(fi >> 16, OMAP1610_DMA_LCD_SRC_FI_B1_U);
omap_writew(fi, OMAP1610_DMA_LCD_SRC_FI_B1_L);
}
-static irqreturn_t lcd_dma_irq_handler(int irq, void *dev_id, struct pt_regs *regs)
+void omap_set_lcd_dma_b1_rotation(int rotate)
{
- u16 w;
-
- w = omap_readw(OMAP1610_DMA_LCD_CTRL);
- if (unlikely(!(w & (1 << 3)))) {
- printk(KERN_WARNING "Spurious LCD DMA IRQ\n");
- return IRQ_NONE;
+ if (omap_dma_in_1510_mode()) {
+ printk(KERN_ERR "DMA rotation is not supported in 1510 mode\n");
+ BUG();
+ return;
}
- /* Ack the IRQ */
- w |= (1 << 3);
- omap_writew(w, OMAP1610_DMA_LCD_CTRL);
- lcd_dma.active = 0;
- if (lcd_dma.callback != NULL)
- lcd_dma.callback(w, lcd_dma.cb_data);
-
- return IRQ_HANDLED;
+ lcd_dma.rotate = rotate;
}
int omap_request_lcd_dma(void (* callback)(u16 status, void *data),
spin_unlock_irq(&lcd_dma.lock);
lcd_dma.callback = callback;
lcd_dma.cb_data = data;
- lcd_dma.active = 0;
- lcd_dma.single_transfer = 0;
- lcd_dma.rotate = 0;
- lcd_dma.vxres = 0;
- lcd_dma.mirror = 0;
- lcd_dma.xscale = 0;
- lcd_dma.yscale = 0;
- lcd_dma.ext_ctrl = 0;
- lcd_dma.src_port = 0;
return 0;
}
spin_unlock(&lcd_dma.lock);
}
-void omap_enable_lcd_dma(void)
+void omap_start_lcd_dma(void)
{
- u16 w;
-
- /* Set the Enable bit only if an external controller is
- * connected. Otherwise the OMAP internal controller will
- * start the transfer when it gets enabled.
- */
- if (enable_1510_mode || !lcd_dma.ext_ctrl)
- return;
- w = omap_readw(OMAP1610_DMA_LCD_CCR);
- w |= 1 << 7;
- omap_writew(w, OMAP1610_DMA_LCD_CCR);
- lcd_dma.active = 1;
-}
-
-void omap_setup_lcd_dma(void)
-{
- BUG_ON(lcd_dma.active);
if (!enable_1510_mode) {
/* Set some reasonable defaults */
- omap_writew(0x5440, OMAP1610_DMA_LCD_CCR);
omap_writew(0x9102, OMAP1610_DMA_LCD_CSDP);
omap_writew(0x0004, OMAP1610_DMA_LCD_LCH_CTRL);
+ omap_writew(0x5740, OMAP1610_DMA_LCD_CCR);
}
set_b1_regs();
- if (!enable_1510_mode) {
- u16 w;
-
- w = omap_readw(OMAP1610_DMA_LCD_CCR);
- /* If DMA was already active set the end_prog bit to have
- * the programmed register set loaded into the active
- * register set.
- */
- w |= 1 << 11; /* End_prog */
- if (!lcd_dma.single_transfer)
- w |= (3 << 8); /* Auto_init, repeat */
- omap_writew(w, OMAP1610_DMA_LCD_CCR);
- }
+ if (!enable_1510_mode)
+ omap_writew(omap_readw(OMAP1610_DMA_LCD_CCR) | 1, OMAP1610_DMA_LCD_CCR);
}
void omap_stop_lcd_dma(void)
{
- lcd_dma.active = 0;
- if (!enable_1510_mode && lcd_dma.ext_ctrl)
- omap_writew(omap_readw(OMAP1610_DMA_LCD_CCR) & ~(1 << 7),
- OMAP1610_DMA_LCD_CCR);
+ if (!enable_1510_mode)
+ omap_writew(omap_readw(OMAP1610_DMA_LCD_CCR) & ~1, OMAP1610_DMA_LCD_CCR);
}
static int __init omap_init_dma(void)
printk(KERN_INFO "DMA support for OMAP1510 initialized\n");
dma_chan_count = 9;
enable_1510_mode = 1;
- } else if (cpu_is_omap16xx() || cpu_is_omap730()) {
+ } else if (cpu_is_omap1610() || cpu_is_omap5912() || cpu_is_omap730() || cpu_is_omap1710()) {
printk(KERN_INFO "OMAP DMA hardware version %d\n",
omap_readw(OMAP_DMA_HW_ID));
printk(KERN_INFO "DMA capabilities: %08x:%08x:%04x:%04x:%04x\n",
w = omap_readw(OMAP_DMA_GSCR);
w |= 1 << 3;
omap_writew(w, OMAP_DMA_GSCR);
- dma_chan_count = 16;
+ dma_chan_count = OMAP_LOGICAL_DMA_CH_COUNT;
} else
dma_chan_count = 9;
} else {
return r;
}
}
- r = request_irq(INT_DMA_LCD, lcd_dma_irq_handler, 0, "LCD DMA", NULL);
- if (r != 0) {
- int i;
-
- printk(KERN_ERR "unable to request IRQ for LCD DMA (error %d)\n", r);
- for (i = 0; i < dma_chan_count; i++)
- free_irq(dma_irq[i], (void *) (i + 1));
- return r;
- }
+
return 0;
}
arch_initcall(omap_init_dma);
-
-EXPORT_SYMBOL(omap_set_dma_priority);
EXPORT_SYMBOL(omap_request_dma);
EXPORT_SYMBOL(omap_free_dma);
EXPORT_SYMBOL(omap_start_dma);
EXPORT_SYMBOL(omap_disable_dma_irq);
EXPORT_SYMBOL(omap_set_dma_transfer_params);
-EXPORT_SYMBOL(omap_set_dma_color_mode);
+EXPORT_SYMBOL(omap_set_dma_constant_fill);
+EXPORT_SYMBOL(omap_set_dma_transparent_copy);
EXPORT_SYMBOL(omap_set_dma_src_params);
EXPORT_SYMBOL(omap_set_dma_src_index);
EXPORT_SYMBOL(omap_request_lcd_dma);
EXPORT_SYMBOL(omap_free_lcd_dma);
-EXPORT_SYMBOL(omap_enable_lcd_dma);
-EXPORT_SYMBOL(omap_setup_lcd_dma);
+EXPORT_SYMBOL(omap_start_lcd_dma);
EXPORT_SYMBOL(omap_stop_lcd_dma);
EXPORT_SYMBOL(omap_set_lcd_dma_b1);
-EXPORT_SYMBOL(omap_set_lcd_dma_single_transfer);
-EXPORT_SYMBOL(omap_set_lcd_dma_ext_controller);
EXPORT_SYMBOL(omap_set_lcd_dma_b1_rotation);
-EXPORT_SYMBOL(omap_set_lcd_dma_b1_vxres);
-EXPORT_SYMBOL(omap_set_lcd_dma_b1_scale);
-EXPORT_SYMBOL(omap_set_lcd_dma_b1_mirror);
-
git://git.onelab.eu / linux-2.6.git / blobdiff