static void sossi_read_data(void *data, unsigned int len)
{
clk_enable(sossi.fck);
set_timing(RD_ACCESS);
_set_bits_per_cycle(sossi.bus_pick_count, sossi.bus_pick_width);
/* CMD#/DATA */
sossi_set_bits(SOSSI_INIT1_REG, 1 << 18);
set_cycles(len);
sossi_start_transfer();
while (len >= 4) {
*(u32 *) data = sossi_read_reg(SOSSI_FIFO_REG);
len -= 4;
data += 4;
}
while (len >= 2) {
*(u16 *) data = sossi_read_reg16(SOSSI_FIFO_REG);
len -= 2;
data += 2;
}
while (len) {
*(u8 *) data = sossi_read_reg8(SOSSI_FIFO_REG);
len--;
data++;
}
sossi_stop_transfer();
clk_disable(sossi.fck);
}
static void sossi_transfer_area(int width, int height,
void (callback)(void *data), void *data)
{
BUG_ON(callback == NULL);
sossi.lcdc_callback = callback;
sossi.lcdc_callback_data = data;
clk_enable(sossi.fck);
set_timing(WR_ACCESS);
_set_bits_per_cycle(sossi.bus_pick_count, sossi.bus_pick_width);
_set_tearsync_mode(sossi.tearsync_mode, sossi.tearsync_line);
/* CMD#/DATA */
sossi_set_bits(SOSSI_INIT1_REG, 1 << 18);
set_cycles(width * height * sossi.bus_pick_width / 8);
sossi_start_transfer();
if (sossi.tearsync_mode) {
/*
* Wait for the sync signal and start the transfer only
* then. We can't seem to be able to use HW sync DMA for
* this since LCD DMA shows huge latencies, as if it
* would ignore some of the DMA requests from SoSSI.
*/
unsigned long flags;
spin_lock_irqsave(&sossi.lock, flags);
sossi.vsync_dma_pending++;
spin_unlock_irqrestore(&sossi.lock, flags);
} else
/* Just start the transfer right away. */
omap_enable_lcd_dma();
}
static void sossi_write_data(const void *data, unsigned int len)
{
set_timing(WR_ACCESS);
/* CMD#/DATA */
sossi_set_bits(SOSSI_INIT1_REG, 1 << 18);
set_cycles(len);
sossi_start_transfer();
send_data(data, len);
sossi_stop_transfer();
wait_end_of_write();
}
static void sossi_write_data(const void *data, unsigned int len)
{
clk_enable(sossi.fck);
set_timing(WR_ACCESS);
_set_bits_per_cycle(sossi.bus_pick_count, sossi.bus_pick_width);
/* CMD#/DATA */
sossi_set_bits(SOSSI_INIT1_REG, 1 << 18);
set_cycles(len);
sossi_start_transfer();
send_data(data, len);
sossi_stop_transfer();
wait_end_of_write();
clk_disable(sossi.fck);
}
static void sossi_transfer_area(int width, int height,
void (callback)(void *data), void *data)
{
BUG_ON(callback == NULL);
sossi.lcdc_callback = callback;
sossi.lcdc_callback_data = data;
set_timing(WR_ACCESS);
/* CMD#/DATA */
sossi_set_bits(SOSSI_INIT1_REG, 1 << 18);
set_cycles(width * height * sossi.bus_pick_width / 8);
sossi_start_transfer();
omap_enable_lcd_dma();
}
static void sossi_read_data(void *data, unsigned int len)
{
set_timing(RD_ACCESS);
/* CMD#/DATA */
sossi_set_bits(SOSSI_INIT1_REG, 1 << 18);
set_cycles(len);
sossi_start_transfer();
while (len >= 4) {
*(u32 *) data = sossi_read_reg(SOSSI_FIFO_REG);
len -= 4;
data += 4;
}
while (len >= 2) {
*(u16 *) data = sossi_read_reg16(SOSSI_FIFO_REG);
len -= 2;
data += 2;
}
while (len) {
*(u8 *) data = sossi_read_reg8(SOSSI_FIFO_REG);
len--;
data++;
}
sossi_stop_transfer();
}
