static void __init create_one_pll(struct clockgen *cg, int idx)
{
u32 __iomem *reg;
u32 mult;
struct clockgen_pll *pll = &cg->pll[idx];
const char *input = "cg-sysclk";
int i;
if (!(cg->info.pll_mask & (1 << idx)))
return;
if (cg->coreclk && idx != PLATFORM_PLL) {
if (IS_ERR(cg->coreclk))
return;
input = "cg-coreclk";
}
if (cg->info.flags & CG_VER3) {
switch (idx) {
case PLATFORM_PLL:
reg = cg->regs + 0x60080;
break;
case CGA_PLL1:
reg = cg->regs + 0x80;
break;
case CGA_PLL2:
reg = cg->regs + 0xa0;
break;
case CGB_PLL1:
reg = cg->regs + 0x10080;
break;
case CGB_PLL2:
reg = cg->regs + 0x100a0;
break;
default:
WARN_ONCE(1, "index %d\n", idx);
return;
}
} else {
if (idx == PLATFORM_PLL)
reg = cg->regs + 0xc00;
else
reg = cg->regs + 0x800 + 0x20 * (idx - 1);
}
/* Get the multiple of PLL */
mult = cg_in(cg, reg);
/* Check if this PLL is disabled */
if (mult & PLL_KILL) {
pr_debug("%s(): pll %p disabled\n", __func__, reg);
return;
}
if ((cg->info.flags & CG_VER3) ||
((cg->info.flags & CG_PLL_8BIT) && idx != PLATFORM_PLL))
mult = (mult & GENMASK(8, 1)) >> 1;
else
static u8 mux_get_parent(struct clk_hw *hw)
{
struct mux_hwclock *hwc = to_mux_hwclock(hw);
u32 clksel;
s8 ret;
clksel = (cg_in(hwc->cg, hwc->reg) & CLKSEL_MASK) >> CLKSEL_SHIFT;
ret = hwc->clksel_to_parent[clksel];
if (ret < 0) {
pr_err("%s: mux at %p has bad clksel\n", __func__, hwc->reg);
return 0;
}
return ret;
}
static struct clk * __init create_one_cmux(struct clockgen *cg, int idx)
{
struct mux_hwclock *hwc;
const struct clockgen_pll_div *div;
unsigned long plat_rate, min_rate;
u64 pct80_rate;
u32 clksel;
hwc = kzalloc(sizeof(*hwc), GFP_KERNEL);
if (!hwc)
return NULL;
if (cg->info.flags & CG_VER3)
hwc->reg = cg->regs + 0x70000 + 0x20 * idx;
else
hwc->reg = cg->regs + 0x20 * idx;
hwc->info = cg->info.cmux_groups[cg->info.cmux_to_group[idx]];
/*
* Find the rate for the default clksel, and treat it as the
* maximum rated core frequency. If this is an incorrect
* assumption, certain clock options (possibly including the
* default clksel) may be inappropriately excluded on certain
* chips.
*/
clksel = (cg_in(cg, hwc->reg) & CLKSEL_MASK) >> CLKSEL_SHIFT;
div = get_pll_div(cg, hwc, clksel);
if (!div) {
kfree(hwc);
return NULL;
}
pct80_rate = clk_get_rate(div->clk);
pct80_rate *= 8;
do_div(pct80_rate, 10);
plat_rate = clk_get_rate(cg->pll[PLATFORM_PLL].div[PLL_DIV1].clk);
if (cg->info.flags & CG_CMUX_GE_PLAT)
min_rate = plat_rate;
else
min_rate = plat_rate / 2;
return create_mux_common(cg, hwc, &cmux_ops, min_rate,
pct80_rate, "cg-cmux%d", idx);
}
