static int _ipu_pixel_clk_div_set_rate(struct clk_hw *hw, unsigned long rate,
unsigned long parent_clk_rate)
{
struct clk_di_div *di_div = to_clk_di_div(hw);
struct ipu_soc *ipu = ipu_get_soc(di_div->ipu_id);
u64 div, parent_rate;
u64 remainder;
parent_rate = (unsigned long long)parent_clk_rate * 16;
div = parent_rate;
div = do_udiv64(div, rate, &remainder);
/* Round the divider value */
if (remainder > (rate/2))
div++;
/* Round up divider if it gets us closer to desired pix clk */
if ((div & 0xC) == 0xC) {
div += 0x10;
div &= ~0xF;
}
if (div > 0x1000)
pr_err("Overflow, di:%d, DI_BS_CLKGEN0 div:0x%x\n",
di_div->di_id, (u32)div);
_ipu_get(ipu);
ipu_di_write(ipu, di_div->di_id, (u32)div, DI_BS_CLKGEN0);
/* Setup pixel clock timing */
/* FIXME: needs to be more flexible */
/* Down time is half of period */
ipu_di_write(ipu, di_div->di_id, ((u32)div / 16) << 16, DI_BS_CLKGEN1);
_ipu_put(ipu);
return 0;
}
static void ipu_di_data_pin_config(struct ipu_di *di, int wave_gen, int di_pin,
int set, int up, int down)
{
u32 reg;
reg = ipu_di_read(di, DI_DW_GEN(wave_gen));
reg &= ~(0x3 << (di_pin * 2));
reg |= set << (di_pin * 2);
ipu_di_write(di, reg, DI_DW_GEN(wave_gen));
ipu_di_write(di, (down << 16) | up, DI_DW_SET(wave_gen, set));
}
static void ipu_di_sync_config(struct ipu_di *di, struct di_sync_config *config,
int start, int count)
{
u32 reg;
int i;
for (i = 0; i < count; i++) {
struct di_sync_config *c = &config[i];
int wave_gen = start + i + 1;
if ((c->run_count >= 0x1000) || (c->offset_count >= 0x1000) ||
(c->repeat_count >= 0x1000) ||
(c->cnt_up >= 0x400) ||
(c->cnt_down >= 0x400)) {
dev_err(di->ipu->dev, "DI%d counters out of range.\n",
di->id);
return;
}
reg = DI_SW_GEN0_RUN_COUNT(c->run_count) |
DI_SW_GEN0_RUN_SRC(c->run_src) |
DI_SW_GEN0_OFFSET_COUNT(c->offset_count) |
DI_SW_GEN0_OFFSET_SRC(c->offset_src);
ipu_di_write(di, reg, DI_SW_GEN0(wave_gen));
reg = DI_SW_GEN1_CNT_POL_GEN_EN(c->cnt_polarity_gen_en) |
DI_SW_GEN1_CNT_CLR_SRC(c->cnt_clr_src) |
DI_SW_GEN1_CNT_POL_TRIGGER_SRC(
c->cnt_polarity_trigger_src) |
DI_SW_GEN1_CNT_POL_CLR_SRC(c->cnt_polarity_clr_src) |
DI_SW_GEN1_CNT_DOWN(c->cnt_down) |
DI_SW_GEN1_CNT_UP(c->cnt_up);
/* Enable auto reload */
if (c->repeat_count == 0)
reg |= DI_SW_GEN1_AUTO_RELOAD;
ipu_di_write(di, reg, DI_SW_GEN1(wave_gen));
reg = ipu_di_read(di, DI_STP_REP(wave_gen));
reg &= ~(0xffff << (16 * ((wave_gen - 1) & 0x1)));
reg |= c->repeat_count << (16 * ((wave_gen - 1) & 0x1));
ipu_di_write(di, reg, DI_STP_REP(wave_gen));
}
}
static void ipu_di_data_wave_config(struct ipu_di *di,
int wave_gen,
int access_size, int component_size)
{
u32 reg;
reg = (access_size << DI_DW_GEN_ACCESS_SIZE_OFFSET) |
(component_size << DI_DW_GEN_COMPONENT_SIZE_OFFSET);
ipu_di_write(di, reg, DI_DW_GEN(wave_gen));
}
static int clk_di_set_parent(struct clk *clk, u8 index)
{
struct ipu_di *di = container_of(clk, struct ipu_di, clk_di_pixel);
u32 val;
val = ipu_di_read(di, DI_GENERAL);
if (index)
val |= DI_GEN_DI_CLK_EXT;
else
val &= ~DI_GEN_DI_CLK_EXT;
ipu_di_write(di, val, DI_GENERAL);
return 0;
}
static int clk_di_set_rate(struct clk *clk, unsigned long rate,
unsigned long parent_rate)
{
struct ipu_di *di = container_of(clk, struct ipu_di, clk_di_pixel);
int div;
u32 clkgen0;
clkgen0 = ipu_di_read(di, DI_BS_CLKGEN0) & ~0xfff;
div = ipu_di_clk_calc_div(parent_rate, rate);
ipu_di_write(di, clkgen0 | div, DI_BS_CLKGEN0);
dev_dbg(di->ipu->dev, "%s: inrate: %ld desired: %ld div: 0x%08x\n",
__func__, parent_rate, rate, div);
return 0;
}
static int _ipu_pixel_clk_set_parent(struct clk_hw *hw, u8 index)
{
struct clk_di_mux *mux = to_clk_di_mux(hw);
struct ipu_soc *ipu = ipu_get_soc(mux->ipu_id);
u32 di_gen;
di_gen = ipu_di_read(ipu, mux->di_id, DI_GENERAL);
if (index == 0)
/* ipu1_clk or ipu2_clk internal clk */
di_gen &= ~DI_GEN_DI_CLK_EXT;
else
di_gen |= DI_GEN_DI_CLK_EXT;
ipu_di_write(ipu, mux->di_id, di_gen, DI_GENERAL);
mux->index = index;
pr_debug("ipu_pixel_clk: di_clk_ext:0x%x, di_gen reg:0x%x.\n",
!(di_gen & DI_GEN_DI_CLK_EXT), di_gen);
return 0;
}
