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clk: renesas: Updates for v4.17 (take two)

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- Fix the incorrect display clock on R-Car M3-N,
   - Always use readl()/writel(),
   - Small fixes.
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Merge tag 'clk-renesas-for-v4.17-tag2' of git://git.kernel.org/pub/scm/linux/kernel/git/geert/renesas-drivers into clk-renesas

Pull Renesas clk driver updates from Geert Uytterhoeven:

  - Fix the incorrect display clock on R-Car M3-N,
  - Always use readl()/writel(),
  - Small fixes.

* tag 'clk-renesas-for-v4.17-tag2' of git://git.kernel.org/pub/scm/linux/kernel/git/geert/renesas-drivers:
  clk: renesas: cpg-mssr: Adjust r8a77980 ifdef
  clk: renesas: rcar-gen3: Always use readl()/writel()
  clk: renesas: sh73a0: Always use readl()/writel()
  clk: renesas: rza1: Always use readl()/writel()
  clk: renesas: rcar-gen2: Always use readl()/writel()
  clk: renesas: r8a7740: Always use readl()/writel()
  clk: renesas: r8a73a4: Always use readl()/writel()
  clk: renesas: mstp: Always use readl()/writel()
  clk: renesas: div6: Always use readl()/writel()
  clk: renesas: r8a77965: Replace DU2 clock
This commit is contained in:
Stephen Boyd 2018-03-23 09:40:52 -07:00
commit aa584d28f3
10 changed files with 48 additions and 50 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

22
drivers/clk/renesas/clk-div6.c
View File

@ -53,9 +53,9 @@ static int cpg_div6_clock_enable(struct clk_hw *hw)
struct div6_clock *clock = to_div6_clock(hw);
u32 val;
val = (clk_readl(clock->reg) & ~(CPG_DIV6_DIV_MASK | CPG_DIV6_CKSTP))
val = (readl(clock->reg) & ~(CPG_DIV6_DIV_MASK | CPG_DIV6_CKSTP))
| CPG_DIV6_DIV(clock->div - 1);
clk_writel(val, clock->reg);
writel(val, clock->reg);
return 0;
}
@ -65,7 +65,7 @@ static void cpg_div6_clock_disable(struct clk_hw *hw)
struct div6_clock *clock = to_div6_clock(hw);
u32 val;
val = clk_readl(clock->reg);
val = readl(clock->reg);
val |= CPG_DIV6_CKSTP;
/*
* DIV6 clocks require the divisor field to be non-zero when stopping
@ -75,14 +75,14 @@ static void cpg_div6_clock_disable(struct clk_hw *hw)
*/
if (!(val & CPG_DIV6_DIV_MASK))
val |= CPG_DIV6_DIV_MASK;
clk_writel(val, clock->reg);
writel(val, clock->reg);
}
static int cpg_div6_clock_is_enabled(struct clk_hw *hw)
{
struct div6_clock *clock = to_div6_clock(hw);
return !(clk_readl(clock->reg) & CPG_DIV6_CKSTP);
return !(readl(clock->reg) & CPG_DIV6_CKSTP);
}
static unsigned long cpg_div6_clock_recalc_rate(struct clk_hw *hw,
@ -122,10 +122,10 @@ static int cpg_div6_clock_set_rate(struct clk_hw *hw, unsigned long rate,
clock->div = div;
val = clk_readl(clock->reg) & ~CPG_DIV6_DIV_MASK;
val = readl(clock->reg) & ~CPG_DIV6_DIV_MASK;
/* Only program the new divisor if the clock isn't stopped. */
if (!(val & CPG_DIV6_CKSTP))
clk_writel(val | CPG_DIV6_DIV(clock->div - 1), clock->reg);
writel(val | CPG_DIV6_DIV(clock->div - 1), clock->reg);
return 0;
}
@ -139,7 +139,7 @@ static u8 cpg_div6_clock_get_parent(struct clk_hw *hw)
if (clock->src_width == 0)
return 0;
hw_index = (clk_readl(clock->reg) >> clock->src_shift) &
hw_index = (readl(clock->reg) >> clock->src_shift) &
(BIT(clock->src_width) - 1);
for (i = 0; i < clk_hw_get_num_parents(hw); i++) {
if (clock->parents[i] == hw_index)
@ -163,8 +163,8 @@ static int cpg_div6_clock_set_parent(struct clk_hw *hw, u8 index)
mask = ~((BIT(clock->src_width) - 1) << clock->src_shift);
hw_index = clock->parents[index];
clk_writel((clk_readl(clock->reg) & mask) |
(hw_index << clock->src_shift), clock->reg);
writel((readl(clock->reg) & mask) | (hw_index << clock->src_shift),
clock->reg);
return 0;
}
@ -241,7 +241,7 @@ struct clk * __init cpg_div6_register(const char *name,
* Read the divisor. Disabling the clock overwrites the divisor, so we
* need to cache its value for the enable operation.
*/
clock->div = (clk_readl(clock->reg) & CPG_DIV6_DIV_MASK) + 1;
clock->div = (readl(clock->reg) & CPG_DIV6_DIV_MASK) + 1;
switch (num_parents) {
case 1:

4
drivers/clk/renesas/clk-mstp.c
View File

@ -64,13 +64,13 @@ struct mstp_clock {
static inline u32 cpg_mstp_read(struct mstp_clock_group *group,
u32 __iomem *reg)
{
return group->width_8bit ? readb(reg) : clk_readl(reg);
return group->width_8bit ? readb(reg) : readl(reg);
}
static inline void cpg_mstp_write(struct mstp_clock_group *group, u32 val,
u32 __iomem *reg)
{
group->width_8bit ? writeb(val, reg) : clk_writel(val, reg);
group->width_8bit ? writeb(val, reg) : writel(val, reg);
}
static int cpg_mstp_clock_endisable(struct clk_hw *hw, bool enable)

11
drivers/clk/renesas/clk-r8a73a4.c
View File

@ -71,7 +71,7 @@ r8a73a4_cpg_register_clock(struct device_node *np, struct r8a73a4_cpg *cpg,
if (!strcmp(name, "main")) {
u32 ckscr = clk_readl(cpg->reg + CPG_CKSCR);
u32 ckscr = readl(cpg->reg + CPG_CKSCR);
switch ((ckscr >> 28) & 3) {
case 0: /* extal1 */
@ -95,14 +95,14 @@ r8a73a4_cpg_register_clock(struct device_node *np, struct r8a73a4_cpg *cpg,
* clock implementation and we currently have no need to change
* the multiplier value.
*/
u32 value = clk_readl(cpg->reg + CPG_PLL0CR);
u32 value = readl(cpg->reg + CPG_PLL0CR);
parent_name = "main";
mult = ((value >> 24) & 0x7f) + 1;
if (value & BIT(20))
div = 2;
} else if (!strcmp(name, "pll1")) {
u32 value = clk_readl(cpg->reg + CPG_PLL1CR);
u32 value = readl(cpg->reg + CPG_PLL1CR);
parent_name = "main";
/* XXX: enable bit? */
@ -125,7 +125,7 @@ r8a73a4_cpg_register_clock(struct device_node *np, struct r8a73a4_cpg *cpg,
default:
return ERR_PTR(-EINVAL);
}
value = clk_readl(cpg->reg + cr);
value = readl(cpg->reg + cr);
switch ((value >> 5) & 7) {
case 0:
parent_name = "main";
@ -161,8 +161,7 @@ r8a73a4_cpg_register_clock(struct device_node *np, struct r8a73a4_cpg *cpg,
shift = 0;
}
div *= 32;
mult = 0x20 - ((clk_readl(cpg->reg + CPG_FRQCRC) >> shift)
& 0x1f);
mult = 0x20 - ((readl(cpg->reg + CPG_FRQCRC) >> shift) & 0x1f);
} else {
struct div4_clk *c;

8
drivers/clk/renesas/clk-r8a7740.c
View File

@ -98,20 +98,20 @@ r8a7740_cpg_register_clock(struct device_node *np, struct r8a7740_cpg *cpg,
* clock implementation and we currently have no need to change
* the multiplier value.
*/
u32 value = clk_readl(cpg->reg + CPG_FRQCRC);
u32 value = readl(cpg->reg + CPG_FRQCRC);
parent_name = "system";
mult = ((value >> 24) & 0x7f) + 1;
} else if (!strcmp(name, "pllc1")) {
u32 value = clk_readl(cpg->reg + CPG_FRQCRA);
u32 value = readl(cpg->reg + CPG_FRQCRA);
parent_name = "system";
mult = ((value >> 24) & 0x7f) + 1;
div = 2;
} else if (!strcmp(name, "pllc2")) {
u32 value = clk_readl(cpg->reg + CPG_PLLC2CR);
u32 value = readl(cpg->reg + CPG_PLLC2CR);
parent_name = "system";
mult = ((value >> 24) & 0x3f) + 1;
} else if (!strcmp(name, "usb24s")) {
u32 value = clk_readl(cpg->reg + CPG_USBCKCR);
u32 value = readl(cpg->reg + CPG_USBCKCR);
if (value & BIT(7))
/* extal2 */
parent_name = of_clk_get_parent_name(np, 1);

17
drivers/clk/renesas/clk-rcar-gen2.c
View File

@ -62,8 +62,7 @@ static unsigned long cpg_z_clk_recalc_rate(struct clk_hw *hw,
unsigned int mult;
unsigned int val;
val = (clk_readl(zclk->reg) & CPG_FRQCRC_ZFC_MASK)
>> CPG_FRQCRC_ZFC_SHIFT;
val = (readl(zclk->reg) & CPG_FRQCRC_ZFC_MASK) >> CPG_FRQCRC_ZFC_SHIFT;
mult = 32 - val;
return div_u64((u64)parent_rate * mult, 32);
@ -95,21 +94,21 @@ static int cpg_z_clk_set_rate(struct clk_hw *hw, unsigned long rate,
mult = div_u64((u64)rate * 32, parent_rate);
mult = clamp(mult, 1U, 32U);
if (clk_readl(zclk->kick_reg) & CPG_FRQCRB_KICK)
if (readl(zclk->kick_reg) & CPG_FRQCRB_KICK)
return -EBUSY;
val = clk_readl(zclk->reg);
val = readl(zclk->reg);
val &= ~CPG_FRQCRC_ZFC_MASK;
val |= (32 - mult) << CPG_FRQCRC_ZFC_SHIFT;
clk_writel(val, zclk->reg);
writel(val, zclk->reg);
/*
* Set KICK bit in FRQCRB to update hardware setting and wait for
* clock change completion.
*/
kick = clk_readl(zclk->kick_reg);
kick = readl(zclk->kick_reg);
kick |= CPG_FRQCRB_KICK;
clk_writel(kick, zclk->kick_reg);
writel(kick, zclk->kick_reg);
/*
* Note: There is no HW information about the worst case latency.
@ -121,7 +120,7 @@ static int cpg_z_clk_set_rate(struct clk_hw *hw, unsigned long rate,
* "super" safe value.
*/
for (i = 1000; i; i--) {
if (!(clk_readl(zclk->kick_reg) & CPG_FRQCRB_KICK))
if (!(readl(zclk->kick_reg) & CPG_FRQCRB_KICK))
return 0;
cpu_relax();
@ -332,7 +331,7 @@ rcar_gen2_cpg_register_clock(struct device_node *np, struct rcar_gen2_cpg *cpg,
mult = config->pll0_mult;
div = 3;
} else {
u32 value = clk_readl(cpg->reg + CPG_PLL0CR);
u32 value = readl(cpg->reg + CPG_PLL0CR);
mult = ((value >> 24) & ((1 << 7) - 1)) + 1;
}
parent_name = "main";

4
drivers/clk/renesas/clk-rz.c
View File

@ -75,9 +75,9 @@ rz_cpg_register_clock(struct device_node *np, struct rz_cpg *cpg, const char *na
* let them run at fixed current speed and implement the details later.
*/
if (strcmp(name, "i") == 0)
val = (clk_readl(cpg->reg + CPG_FRQCR) >> 8) & 3;
val = (readl(cpg->reg + CPG_FRQCR) >> 8) & 3;
else if (strcmp(name, "g") == 0)
val = clk_readl(cpg->reg + CPG_FRQCR2) & 3;
val = readl(cpg->reg + CPG_FRQCR2) & 3;
else
return ERR_PTR(-EINVAL);

14
drivers/clk/renesas/clk-sh73a0.c
View File

@ -85,7 +85,7 @@ sh73a0_cpg_register_clock(struct device_node *np, struct sh73a0_cpg *cpg,
if (!strcmp(name, "main")) {
/* extal1, extal1_div2, extal2, extal2_div2 */
u32 parent_idx = (clk_readl(cpg->reg + CPG_CKSCR) >> 28) & 3;
u32 parent_idx = (readl(cpg->reg + CPG_CKSCR) >> 28) & 3;
parent_name = of_clk_get_parent_name(np, parent_idx >> 1);
div = (parent_idx & 1) + 1;
@ -110,11 +110,11 @@ sh73a0_cpg_register_clock(struct device_node *np, struct sh73a0_cpg *cpg,
default:
return ERR_PTR(-EINVAL);
}
if (clk_readl(cpg->reg + CPG_PLLECR) & BIT(enable_bit)) {
mult = ((clk_readl(enable_reg) >> 24) & 0x3f) + 1;
if (readl(cpg->reg + CPG_PLLECR) & BIT(enable_bit)) {
mult = ((readl(enable_reg) >> 24) & 0x3f) + 1;
/* handle CFG bit for PLL1 and PLL2 */
if (enable_bit == 1 || enable_bit == 2)
if (clk_readl(enable_reg) & BIT(20))
if (readl(enable_reg) & BIT(20))
mult *= 2;
}
} else if (!strcmp(name, "dsi0phy") || !strcmp(name, "dsi1phy")) {
@ -193,9 +193,9 @@ static void __init sh73a0_cpg_clocks_init(struct device_node *np)
return;
/* Set SDHI clocks to a known state */
clk_writel(0x108, cpg->reg + CPG_SD0CKCR);
clk_writel(0x108, cpg->reg + CPG_SD1CKCR);
clk_writel(0x108, cpg->reg + CPG_SD2CKCR);
writel(0x108, cpg->reg + CPG_SD0CKCR);
writel(0x108, cpg->reg + CPG_SD1CKCR);
writel(0x108, cpg->reg + CPG_SD2CKCR);
for (i = 0; i < num_clks; ++i) {
const char *name;

2
drivers/clk/renesas/r8a77965-cpg-mssr.c
View File

@ -173,7 +173,7 @@ static const struct mssr_mod_clk r8a77965_mod_clks[] __initconst = {
DEF_MOD("hsusb", 704, R8A77965_CLK_S3D4),
DEF_MOD("csi20", 714, R8A77965_CLK_CSI0),
DEF_MOD("csi40", 716, R8A77965_CLK_CSI0),
DEF_MOD("du2", 722, R8A77965_CLK_S2D1),
DEF_MOD("du3", 721, R8A77965_CLK_S2D1),
DEF_MOD("du1", 723, R8A77965_CLK_S2D1),
DEF_MOD("du0", 724, R8A77965_CLK_S2D1),
DEF_MOD("lvds", 727, R8A77965_CLK_S2D1),

14
drivers/clk/renesas/rcar-gen3-cpg.c
View File

@ -93,7 +93,7 @@ static unsigned long cpg_z_clk_recalc_rate(struct clk_hw *hw,
unsigned int mult;
u32 val;
val = clk_readl(zclk->reg) & zclk->mask;
val = readl(zclk->reg) & zclk->mask;
mult = 32 - (val >> __ffs(zclk->mask));
/* Factor of 2 is for fixed divider */
@ -125,20 +125,20 @@ static int cpg_z_clk_set_rate(struct clk_hw *hw, unsigned long rate,
mult = DIV_ROUND_CLOSEST_ULL(rate * 32ULL * 2, parent_rate);
mult = clamp(mult, 1U, 32U);
if (clk_readl(zclk->kick_reg) & CPG_FRQCRB_KICK)
if (readl(zclk->kick_reg) & CPG_FRQCRB_KICK)
return -EBUSY;
val = clk_readl(zclk->reg) & ~zclk->mask;
val = readl(zclk->reg) & ~zclk->mask;
val |= ((32 - mult) << __ffs(zclk->mask)) & zclk->mask;
clk_writel(val, zclk->reg);
writel(val, zclk->reg);
/*
* Set KICK bit in FRQCRB to update hardware setting and wait for
* clock change completion.
*/
kick = clk_readl(zclk->kick_reg);
kick = readl(zclk->kick_reg);
kick |= CPG_FRQCRB_KICK;
clk_writel(kick, zclk->kick_reg);
writel(kick, zclk->kick_reg);
/*
* Note: There is no HW information about the worst case latency.
@ -150,7 +150,7 @@ static int cpg_z_clk_set_rate(struct clk_hw *hw, unsigned long rate,
* "super" safe value.
*/
for (i = 1000; i; i--) {
if (!(clk_readl(zclk->kick_reg) & CPG_FRQCRB_KICK))
if (!(readl(zclk->kick_reg) & CPG_FRQCRB_KICK))
return 0;
cpu_relax();

2
drivers/clk/renesas/renesas-cpg-mssr.c
View File

@ -705,7 +705,7 @@ static const struct of_device_id cpg_mssr_match[] = {
.data = &r8a77970_cpg_mssr_info,
},
#endif
#ifdef CONFIG_ARCH_R8A77980
#ifdef CONFIG_CLK_R8A77980
{
.compatible = "renesas,r8a77980-cpg-mssr",
.data = &r8a77980_cpg_mssr_info,