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[ARM] omap: create a proper tree of clocks

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Traditionally, we've tracked the parent/child relationships between
clk structures by setting the child's parent member to point at the
upstream clock.  As a result, when decending the tree, we have had
to scan all clocks to find the children.

Avoid this wasteful scanning by keeping a list of the clock's children.

Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
This commit is contained in:
Russell King 2009-01-31 10:05:51 +00:00 committed by Russell King
parent b5088c0d90
commit 3f0a820c4c
9 changed files with 74 additions and 128 deletions
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3
arch/arm/mach-omap1/clock.c
View file

@ -782,6 +782,9 @@ int __init omap1_clk_init(void)
/* By default all idlect1 clocks are allowed to idle */
arm_idlect1_mask = ~0;
for (c = omap_clks; c < omap_clks + ARRAY_SIZE(omap_clks); c++)
clk_init_one(c->lk.clk);
cpu_mask = 0;
if (cpu_is_omap16xx())
cpu_mask |= CK_16XX;

7
arch/arm/mach-omap1/clock.h
View file

@ -155,7 +155,6 @@ static struct clk ck_dpll1 = {
.name = "ck_dpll1",
.ops = &clkops_null,
.parent = &ck_ref,
.flags = RATE_PROPAGATES,
};
static struct arm_idlect1_clk ck_dpll1out = {
@ -163,8 +162,7 @@ static struct arm_idlect1_clk ck_dpll1out = {
.name = "ck_dpll1out",
.ops = &clkops_generic,
.parent = &ck_dpll1,
.flags = CLOCK_IDLE_CONTROL |
ENABLE_REG_32BIT | RATE_PROPAGATES,
.flags = CLOCK_IDLE_CONTROL | ENABLE_REG_32BIT,
.enable_reg = OMAP1_IO_ADDRESS(ARM_IDLECT2),
.enable_bit = EN_CKOUT_ARM,
.recalc = &followparent_recalc,
@ -187,7 +185,6 @@ static struct clk arm_ck = {
.name = "arm_ck",
.ops = &clkops_null,
.parent = &ck_dpll1,
.flags = RATE_PROPAGATES,
.rate_offset = CKCTL_ARMDIV_OFFSET,
.recalc = &omap1_ckctl_recalc,
.round_rate = omap1_clk_round_rate_ckctl_arm,
@ -328,7 +325,7 @@ static struct arm_idlect1_clk tc_ck = {
.name = "tc_ck",
.ops = &clkops_null,
.parent = &ck_dpll1,
.flags = RATE_PROPAGATES | CLOCK_IDLE_CONTROL,
.flags = CLOCK_IDLE_CONTROL,
.rate_offset = CKCTL_TCDIV_OFFSET,
.recalc = &omap1_ckctl_recalc,
.round_rate = omap1_clk_round_rate_ckctl_arm,

4
arch/arm/mach-omap2/clock.c
View file

@ -175,7 +175,7 @@ void omap2_init_clksel_parent(struct clk *clk)
clk->name, clks->parent->name,
((clk->parent) ?
clk->parent->name : "NULL"));
clk->parent = clks->parent;
clk_reparent(clk, clks->parent);
};
found = 1;
}
@ -780,7 +780,7 @@ int omap2_clk_set_parent(struct clk *clk, struct clk *new_parent)
if (clk->usecount > 0)
_omap2_clk_enable(clk);
clk->parent = new_parent;
clk_reparent(clk, new_parent);
/* CLKSEL clocks follow their parents' rates, divided by a divisor */
clk->rate = new_parent->rate;

3
arch/arm/mach-omap2/clock24xx.c
View file

@ -718,6 +718,9 @@ int __init omap2_clk_init(void)
omap2_sys_clk_recalc(&sys_ck);
propagate_rate(&sys_ck);
for (c = omap24xx_clks; c < omap24xx_clks + ARRAY_SIZE(omap24xx_clks); c++)
clk_init_one(c->lk.clk);
cpu_mask = 0;
if (cpu_is_omap2420())
cpu_mask |= CK_242X;

28
arch/arm/mach-omap2/clock24xx.h
View file

@ -621,7 +621,7 @@ static struct clk func_32k_ck = {
.name = "func_32k_ck",
.ops = &clkops_null,
.rate = 32000,
.flags = RATE_FIXED | RATE_PROPAGATES,
.flags = RATE_FIXED,
.clkdm_name = "wkup_clkdm",
};
@ -629,7 +629,6 @@ static struct clk func_32k_ck = {
static struct clk osc_ck = { /* (*12, *13, 19.2, *26, 38.4)MHz */
.name = "osc_ck",
.ops = &clkops_oscck,
.flags = RATE_PROPAGATES,
.clkdm_name = "wkup_clkdm",
.recalc = &omap2_osc_clk_recalc,
};
@ -639,7 +638,6 @@ static struct clk sys_ck = { /* (*12, *13, 19.2, 26, 38.4)MHz */
.name = "sys_ck", /* ~ ref_clk also */
.ops = &clkops_null,
.parent = &osc_ck,
.flags = RATE_PROPAGATES,
.clkdm_name = "wkup_clkdm",
.recalc = &omap2_sys_clk_recalc,
};
@ -648,7 +646,7 @@ static struct clk alt_ck = { /* Typical 54M or 48M, may not exist */
.name = "alt_ck",
.ops = &clkops_null,
.rate = 54000000,
.flags = RATE_FIXED | RATE_PROPAGATES,
.flags = RATE_FIXED,
.clkdm_name = "wkup_clkdm",
};
@ -680,7 +678,6 @@ static struct clk dpll_ck = {
.ops = &clkops_null,
.parent = &sys_ck, /* Can be func_32k also */
.dpll_data = &dpll_dd,
.flags = RATE_PROPAGATES,
.clkdm_name = "wkup_clkdm",
.recalc = &omap2_dpllcore_recalc,
.set_rate = &omap2_reprogram_dpllcore,
@ -691,7 +688,7 @@ static struct clk apll96_ck = {
.ops = &clkops_fixed,
.parent = &sys_ck,
.rate = 96000000,
.flags = RATE_FIXED | RATE_PROPAGATES | ENABLE_ON_INIT,
.flags = RATE_FIXED | ENABLE_ON_INIT,
.clkdm_name = "wkup_clkdm",
.enable_reg = OMAP_CM_REGADDR(PLL_MOD, CM_CLKEN),
.enable_bit = OMAP24XX_EN_96M_PLL_SHIFT,
@ -702,7 +699,7 @@ static struct clk apll54_ck = {
.ops = &clkops_fixed,
.parent = &sys_ck,
.rate = 54000000,
.flags = RATE_FIXED | RATE_PROPAGATES | ENABLE_ON_INIT,
.flags = RATE_FIXED | ENABLE_ON_INIT,
.clkdm_name = "wkup_clkdm",
.enable_reg = OMAP_CM_REGADDR(PLL_MOD, CM_CLKEN),
.enable_bit = OMAP24XX_EN_54M_PLL_SHIFT,
@ -734,7 +731,6 @@ static struct clk func_54m_ck = {
.name = "func_54m_ck",
.ops = &clkops_null,
.parent = &apll54_ck, /* can also be alt_clk */
.flags = RATE_PROPAGATES,
.clkdm_name = "wkup_clkdm",
.init = &omap2_init_clksel_parent,
.clksel_reg = OMAP_CM_REGADDR(PLL_MOD, CM_CLKSEL1),
@ -747,7 +743,6 @@ static struct clk core_ck = {
.name = "core_ck",
.ops = &clkops_null,
.parent = &dpll_ck, /* can also be 32k */
.flags = RATE_PROPAGATES,
.clkdm_name = "wkup_clkdm",
.recalc = &followparent_recalc,
};
@ -774,7 +769,6 @@ static struct clk func_96m_ck = {
.name = "func_96m_ck",
.ops = &clkops_null,
.parent = &apll96_ck,
.flags = RATE_PROPAGATES,
.clkdm_name = "wkup_clkdm",
.init = &omap2_init_clksel_parent,
.clksel_reg = OMAP_CM_REGADDR(PLL_MOD, CM_CLKSEL1),
@ -807,7 +801,6 @@ static struct clk func_48m_ck = {
.name = "func_48m_ck",
.ops = &clkops_null,
.parent = &apll96_ck, /* 96M or Alt */
.flags = RATE_PROPAGATES,
.clkdm_name = "wkup_clkdm",
.init = &omap2_init_clksel_parent,
.clksel_reg = OMAP_CM_REGADDR(PLL_MOD, CM_CLKSEL1),
@ -823,7 +816,6 @@ static struct clk func_12m_ck = {
.ops = &clkops_null,
.parent = &func_48m_ck,
.fixed_div = 4,
.flags = RATE_PROPAGATES,
.clkdm_name = "wkup_clkdm",
.recalc = &omap2_fixed_divisor_recalc,
};
@ -876,7 +868,6 @@ static struct clk sys_clkout_src = {
.name = "sys_clkout_src",
.ops = &clkops_omap2_dflt,
.parent = &func_54m_ck,
.flags = RATE_PROPAGATES,
.clkdm_name = "wkup_clkdm",
.enable_reg = OMAP24XX_PRCM_CLKOUT_CTRL,
.enable_bit = OMAP24XX_CLKOUT_EN_SHIFT,
@ -921,7 +912,6 @@ static struct clk sys_clkout2_src = {
.name = "sys_clkout2_src",
.ops = &clkops_omap2_dflt,
.parent = &func_54m_ck,
.flags = RATE_PROPAGATES,
.clkdm_name = "wkup_clkdm",
.enable_reg = OMAP24XX_PRCM_CLKOUT_CTRL,
.enable_bit = OMAP2420_CLKOUT2_EN_SHIFT,
@ -992,7 +982,7 @@ static struct clk mpu_ck = { /* Control cpu */
.name = "mpu_ck",
.ops = &clkops_null,
.parent = &core_ck,
.flags = DELAYED_APP | CONFIG_PARTICIPANT | RATE_PROPAGATES,
.flags = DELAYED_APP | CONFIG_PARTICIPANT,
.clkdm_name = "mpu_clkdm",
.init = &omap2_init_clksel_parent,
.clksel_reg = OMAP_CM_REGADDR(MPU_MOD, CM_CLKSEL),
@ -1034,7 +1024,7 @@ static struct clk dsp_fck = {
.name = "dsp_fck",
.ops = &clkops_omap2_dflt_wait,
.parent = &core_ck,
.flags = DELAYED_APP | CONFIG_PARTICIPANT | RATE_PROPAGATES,
.flags = DELAYED_APP | CONFIG_PARTICIPANT,
.clkdm_name = "dsp_clkdm",
.enable_reg = OMAP_CM_REGADDR(OMAP24XX_DSP_MOD, CM_FCLKEN),
.enable_bit = OMAP24XX_CM_FCLKEN_DSP_EN_DSP_SHIFT,
@ -1102,7 +1092,7 @@ static struct clk iva1_ifck = {
.name = "iva1_ifck",
.ops = &clkops_omap2_dflt_wait,
.parent = &core_ck,
.flags = CONFIG_PARTICIPANT | RATE_PROPAGATES | DELAYED_APP,
.flags = CONFIG_PARTICIPANT | DELAYED_APP,
.clkdm_name = "iva1_clkdm",
.enable_reg = OMAP_CM_REGADDR(OMAP24XX_DSP_MOD, CM_FCLKEN),
.enable_bit = OMAP2420_EN_IVA_COP_SHIFT,
@ -1165,7 +1155,7 @@ static struct clk core_l3_ck = { /* Used for ick and fck, interconnect */
.name = "core_l3_ck",
.ops = &clkops_null,
.parent = &core_ck,
.flags = DELAYED_APP | CONFIG_PARTICIPANT | RATE_PROPAGATES,
.flags = DELAYED_APP | CONFIG_PARTICIPANT,
.clkdm_name = "core_l3_clkdm",
.clksel_reg = OMAP_CM_REGADDR(CORE_MOD, CM_CLKSEL1),
.clksel_mask = OMAP24XX_CLKSEL_L3_MASK,
@ -1227,7 +1217,7 @@ static struct clk l4_ck = { /* used both as an ick and fck */
.name = "l4_ck",
.ops = &clkops_null,
.parent = &core_l3_ck,
.flags = DELAYED_APP | RATE_PROPAGATES,
.flags = DELAYED_APP,
.clkdm_name = "core_l4_clkdm",
.clksel_reg = OMAP_CM_REGADDR(CORE_MOD, CM_CLKSEL1),
.clksel_mask = OMAP24XX_CLKSEL_L4_MASK,

3
arch/arm/mach-omap2/clock34xx.c
View file

@ -903,6 +903,9 @@ int __init omap2_clk_init(void)
clk_init(&omap2_clk_functions);
for (c = omap34xx_clks; c < omap34xx_clks + ARRAY_SIZE(omap34xx_clks); c++)
clk_init_one(c->lk.clk);
for (c = omap34xx_clks; c < omap34xx_clks + ARRAY_SIZE(omap34xx_clks); c++)
if (c->cpu & cpu_clkflg) {
clkdev_add(&c->lk);

96
arch/arm/mach-omap2/clock34xx.h
View file

@ -60,14 +60,14 @@ static struct clk omap_32k_fck = {
.name = "omap_32k_fck",
.ops = &clkops_null,
.rate = 32768,
.flags = RATE_FIXED | RATE_PROPAGATES,
.flags = RATE_FIXED,
};
static struct clk secure_32k_fck = {
.name = "secure_32k_fck",
.ops = &clkops_null,
.rate = 32768,
.flags = RATE_FIXED | RATE_PROPAGATES,
.flags = RATE_FIXED,
};
/* Virtual source clocks for osc_sys_ck */
@ -75,42 +75,42 @@ static struct clk virt_12m_ck = {
.name = "virt_12m_ck",
.ops = &clkops_null,
.rate = 12000000,
.flags = RATE_FIXED | RATE_PROPAGATES,
.flags = RATE_FIXED,
};
static struct clk virt_13m_ck = {
.name = "virt_13m_ck",
.ops = &clkops_null,
.rate = 13000000,
.flags = RATE_FIXED | RATE_PROPAGATES,
.flags = RATE_FIXED,
};
static struct clk virt_16_8m_ck = {
.name = "virt_16_8m_ck",
.ops = &clkops_null,
.rate = 16800000,
.flags = RATE_FIXED | RATE_PROPAGATES,
.flags = RATE_FIXED,
};
static struct clk virt_19_2m_ck = {
.name = "virt_19_2m_ck",
.ops = &clkops_null,
.rate = 19200000,
.flags = RATE_FIXED | RATE_PROPAGATES,
.flags = RATE_FIXED,
};
static struct clk virt_26m_ck = {
.name = "virt_26m_ck",
.ops = &clkops_null,
.rate = 26000000,
.flags = RATE_FIXED | RATE_PROPAGATES,
.flags = RATE_FIXED,
};
static struct clk virt_38_4m_ck = {
.name = "virt_38_4m_ck",
.ops = &clkops_null,
.rate = 38400000,
.flags = RATE_FIXED | RATE_PROPAGATES,
.flags = RATE_FIXED,
};
static const struct clksel_rate osc_sys_12m_rates[] = {
@ -163,7 +163,7 @@ static struct clk osc_sys_ck = {
.clksel_mask = OMAP3430_SYS_CLKIN_SEL_MASK,
.clksel = osc_sys_clksel,
/* REVISIT: deal with autoextclkmode? */
.flags = RATE_FIXED | RATE_PROPAGATES,
.flags = RATE_FIXED,
.recalc = &omap2_clksel_recalc,
};
@ -188,21 +188,18 @@ static struct clk sys_ck = {
.clksel_reg = OMAP3430_PRM_CLKSRC_CTRL,
.clksel_mask = OMAP_SYSCLKDIV_MASK,
.clksel = sys_clksel,
.flags = RATE_PROPAGATES,
.recalc = &omap2_clksel_recalc,
};
static struct clk sys_altclk = {
.name = "sys_altclk",
.ops = &clkops_null,
.flags = RATE_PROPAGATES,
};
/* Optional external clock input for some McBSPs */
static struct clk mcbsp_clks = {
.name = "mcbsp_clks",
.ops = &clkops_null,
.flags = RATE_PROPAGATES,
};
/* PRM EXTERNAL CLOCK OUTPUT */
@ -279,7 +276,6 @@ static struct clk dpll1_ck = {
.ops = &clkops_null,
.parent = &sys_ck,
.dpll_data = &dpll1_dd,
.flags = RATE_PROPAGATES,
.round_rate = &omap2_dpll_round_rate,
.set_rate = &omap3_noncore_dpll_set_rate,
.clkdm_name = "dpll1_clkdm",
@ -294,7 +290,6 @@ static struct clk dpll1_x2_ck = {
.name = "dpll1_x2_ck",
.ops = &clkops_null,
.parent = &dpll1_ck,
.flags = RATE_PROPAGATES,
.clkdm_name = "dpll1_clkdm",
.recalc = &omap3_clkoutx2_recalc,
};
@ -317,7 +312,6 @@ static struct clk dpll1_x2m2_ck = {
.clksel_reg = OMAP_CM_REGADDR(MPU_MOD, OMAP3430_CM_CLKSEL2_PLL),
.clksel_mask = OMAP3430_MPU_DPLL_CLKOUT_DIV_MASK,
.clksel = div16_dpll1_x2m2_clksel,
.flags = RATE_PROPAGATES,
.clkdm_name = "dpll1_clkdm",
.recalc = &omap2_clksel_recalc,
};
@ -353,7 +347,6 @@ static struct clk dpll2_ck = {
.ops = &clkops_noncore_dpll_ops,
.parent = &sys_ck,
.dpll_data = &dpll2_dd,
.flags = RATE_PROPAGATES,
.round_rate = &omap2_dpll_round_rate,
.set_rate = &omap3_noncore_dpll_set_rate,
.clkdm_name = "dpll2_clkdm",
@ -378,7 +371,6 @@ static struct clk dpll2_m2_ck = {
OMAP3430_CM_CLKSEL2_PLL),
.clksel_mask = OMAP3430_IVA2_DPLL_CLKOUT_DIV_MASK,
.clksel = div16_dpll2_m2x2_clksel,
.flags = RATE_PROPAGATES,
.clkdm_name = "dpll2_clkdm",
.recalc = &omap2_clksel_recalc,
};
@ -413,7 +405,6 @@ static struct clk dpll3_ck = {
.ops = &clkops_null,
.parent = &sys_ck,
.dpll_data = &dpll3_dd,
.flags = RATE_PROPAGATES,
.round_rate = &omap2_dpll_round_rate,
.clkdm_name = "dpll3_clkdm",
.recalc = &omap3_dpll_recalc,
@ -427,7 +418,6 @@ static struct clk dpll3_x2_ck = {
.name = "dpll3_x2_ck",
.ops = &clkops_null,
.parent = &dpll3_ck,
.flags = RATE_PROPAGATES,
.clkdm_name = "dpll3_clkdm",
.recalc = &omap3_clkoutx2_recalc,
};
@ -481,7 +471,6 @@ static struct clk dpll3_m2_ck = {
.clksel_reg = OMAP_CM_REGADDR(PLL_MOD, CM_CLKSEL1),
.clksel_mask = OMAP3430_CORE_DPLL_CLKOUT_DIV_MASK,
.clksel = div31_dpll3m2_clksel,
.flags = RATE_PROPAGATES,
.clkdm_name = "dpll3_clkdm",
.round_rate = &omap2_clksel_round_rate,
.set_rate = &omap3_core_dpll_m2_set_rate,
@ -501,7 +490,6 @@ static struct clk core_ck = {
.clksel_reg = OMAP_CM_REGADDR(PLL_MOD, CM_IDLEST),
.clksel_mask = OMAP3430_ST_CORE_CLK_MASK,
.clksel = core_ck_clksel,
.flags = RATE_PROPAGATES,
.recalc = &omap2_clksel_recalc,
};
@ -518,7 +506,6 @@ static struct clk dpll3_m2x2_ck = {
.clksel_reg = OMAP_CM_REGADDR(PLL_MOD, CM_IDLEST),
.clksel_mask = OMAP3430_ST_CORE_CLK_MASK,
.clksel = dpll3_m2x2_ck_clksel,
.flags = RATE_PROPAGATES,
.clkdm_name = "dpll3_clkdm",
.recalc = &omap2_clksel_recalc,
};
@ -538,7 +525,6 @@ static struct clk dpll3_m3_ck = {
.clksel_reg = OMAP_CM_REGADDR(OMAP3430_EMU_MOD, CM_CLKSEL1),
.clksel_mask = OMAP3430_DIV_DPLL3_MASK,
.clksel = div16_dpll3_clksel,
.flags = RATE_PROPAGATES,
.clkdm_name = "dpll3_clkdm",
.recalc = &omap2_clksel_recalc,
};
@ -550,7 +536,7 @@ static struct clk dpll3_m3x2_ck = {
.parent = &dpll3_m3_ck,
.enable_reg = OMAP_CM_REGADDR(PLL_MOD, CM_CLKEN),
.enable_bit = OMAP3430_PWRDN_EMU_CORE_SHIFT,
.flags = RATE_PROPAGATES | INVERT_ENABLE,
.flags = INVERT_ENABLE,
.clkdm_name = "dpll3_clkdm",
.recalc = &omap3_clkoutx2_recalc,
};
@ -569,7 +555,6 @@ static struct clk emu_core_alwon_ck = {
.clksel_reg = OMAP_CM_REGADDR(PLL_MOD, CM_IDLEST),
.clksel_mask = OMAP3430_ST_CORE_CLK_MASK,
.clksel = emu_core_alwon_ck_clksel,
.flags = RATE_PROPAGATES,
.clkdm_name = "dpll3_clkdm",
.recalc = &omap2_clksel_recalc,
};
@ -603,7 +588,6 @@ static struct clk dpll4_ck = {
.ops = &clkops_noncore_dpll_ops,
.parent = &sys_ck,
.dpll_data = &dpll4_dd,
.flags = RATE_PROPAGATES,
.round_rate = &omap2_dpll_round_rate,
.set_rate = &omap3_dpll4_set_rate,
.clkdm_name = "dpll4_clkdm",
@ -619,7 +603,6 @@ static struct clk dpll4_x2_ck = {
.name = "dpll4_x2_ck",
.ops = &clkops_null,
.parent = &dpll4_ck,
.flags = RATE_PROPAGATES,
.clkdm_name = "dpll4_clkdm",
.recalc = &omap3_clkoutx2_recalc,
};
@ -638,7 +621,6 @@ static struct clk dpll4_m2_ck = {
.clksel_reg = OMAP_CM_REGADDR(PLL_MOD, OMAP3430_CM_CLKSEL3),
.clksel_mask = OMAP3430_DIV_96M_MASK,
.clksel = div16_dpll4_clksel,
.flags = RATE_PROPAGATES,
.clkdm_name = "dpll4_clkdm",
.recalc = &omap2_clksel_recalc,
};
@ -650,7 +632,7 @@ static struct clk dpll4_m2x2_ck = {
.parent = &dpll4_m2_ck,
.enable_reg = OMAP_CM_REGADDR(PLL_MOD, CM_CLKEN),
.enable_bit = OMAP3430_PWRDN_96M_SHIFT,
.flags = RATE_PROPAGATES | INVERT_ENABLE,
.flags = INVERT_ENABLE,
.clkdm_name = "dpll4_clkdm",
.recalc = &omap3_clkoutx2_recalc,
};
@ -675,7 +657,6 @@ static struct clk omap_96m_alwon_fck = {
.clksel_reg = OMAP_CM_REGADDR(PLL_MOD, CM_IDLEST),
.clksel_mask = OMAP3430_ST_PERIPH_CLK_MASK,
.clksel = omap_96m_alwon_fck_clksel,
.flags = RATE_PROPAGATES,
.recalc = &omap2_clksel_recalc,
};
@ -683,7 +664,6 @@ static struct clk cm_96m_fck = {
.name = "cm_96m_fck",
.ops = &clkops_null,
.parent = &omap_96m_alwon_fck,
.flags = RATE_PROPAGATES,
.recalc = &followparent_recalc,
};
@ -711,7 +691,6 @@ static struct clk omap_96m_fck = {
.clksel_reg = OMAP_CM_REGADDR(PLL_MOD, CM_CLKSEL1),
.clksel_mask = OMAP3430_SOURCE_96M_MASK,
.clksel = omap_96m_fck_clksel,
.flags = RATE_PROPAGATES,
.recalc = &omap2_clksel_recalc,
};
@ -724,7 +703,6 @@ static struct clk dpll4_m3_ck = {
.clksel_reg = OMAP_CM_REGADDR(OMAP3430_DSS_MOD, CM_CLKSEL),
.clksel_mask = OMAP3430_CLKSEL_TV_MASK,
.clksel = div16_dpll4_clksel,
.flags = RATE_PROPAGATES,
.clkdm_name = "dpll4_clkdm",
.recalc = &omap2_clksel_recalc,
};
@ -737,7 +715,7 @@ static struct clk dpll4_m3x2_ck = {
.init = &omap2_init_clksel_parent,
.enable_reg = OMAP_CM_REGADDR(PLL_MOD, CM_CLKEN),
.enable_bit = OMAP3430_PWRDN_TV_SHIFT,
.flags = RATE_PROPAGATES | INVERT_ENABLE,
.flags = INVERT_ENABLE,
.clkdm_name = "dpll4_clkdm",
.recalc = &omap3_clkoutx2_recalc,
};
@ -756,7 +734,6 @@ static struct clk virt_omap_54m_fck = {
.clksel_reg = OMAP_CM_REGADDR(PLL_MOD, CM_IDLEST),
.clksel_mask = OMAP3430_ST_PERIPH_CLK_MASK,
.clksel = virt_omap_54m_fck_clksel,
.flags = RATE_PROPAGATES,
.recalc = &omap2_clksel_recalc,
};
@ -783,7 +760,6 @@ static struct clk omap_54m_fck = {
.clksel_reg = OMAP_CM_REGADDR(PLL_MOD, CM_CLKSEL1),
.clksel_mask = OMAP3430_SOURCE_54M_MASK,
.clksel = omap_54m_clksel,
.flags = RATE_PROPAGATES,
.recalc = &omap2_clksel_recalc,
};
@ -810,7 +786,6 @@ static struct clk omap_48m_fck = {
.clksel_reg = OMAP_CM_REGADDR(PLL_MOD, CM_CLKSEL1),
.clksel_mask = OMAP3430_SOURCE_48M_MASK,
.clksel = omap_48m_clksel,
.flags = RATE_PROPAGATES,
.recalc = &omap2_clksel_recalc,
};
@ -819,7 +794,6 @@ static struct clk omap_12m_fck = {
.ops = &clkops_null,
.parent = &omap_48m_fck,
.fixed_div = 4,
.flags = RATE_PROPAGATES,
.recalc = &omap2_fixed_divisor_recalc,
};
@ -832,7 +806,6 @@ static struct clk dpll4_m4_ck = {
.clksel_reg = OMAP_CM_REGADDR(OMAP3430_DSS_MOD, CM_CLKSEL),
.clksel_mask = OMAP3430_CLKSEL_DSS1_MASK,
.clksel = div16_dpll4_clksel,
.flags = RATE_PROPAGATES,
.clkdm_name = "dpll4_clkdm",
.recalc = &omap2_clksel_recalc,
.set_rate = &omap2_clksel_set_rate,
@ -846,7 +819,7 @@ static struct clk dpll4_m4x2_ck = {
.parent = &dpll4_m4_ck,
.enable_reg = OMAP_CM_REGADDR(PLL_MOD, CM_CLKEN),
.enable_bit = OMAP3430_PWRDN_CAM_SHIFT,
.flags = RATE_PROPAGATES | INVERT_ENABLE,
.flags = INVERT_ENABLE,
.clkdm_name = "dpll4_clkdm",
.recalc = &omap3_clkoutx2_recalc,
};
@ -860,7 +833,6 @@ static struct clk dpll4_m5_ck = {
.clksel_reg = OMAP_CM_REGADDR(OMAP3430_CAM_MOD, CM_CLKSEL),
.clksel_mask = OMAP3430_CLKSEL_CAM_MASK,
.clksel = div16_dpll4_clksel,
.flags = RATE_PROPAGATES,
.clkdm_name = "dpll4_clkdm",
.recalc = &omap2_clksel_recalc,
};
@ -872,7 +844,7 @@ static struct clk dpll4_m5x2_ck = {
.parent = &dpll4_m5_ck,
.enable_reg = OMAP_CM_REGADDR(PLL_MOD, CM_CLKEN),
.enable_bit = OMAP3430_PWRDN_CAM_SHIFT,
.flags = RATE_PROPAGATES | INVERT_ENABLE,
.flags = INVERT_ENABLE,
.clkdm_name = "dpll4_clkdm",
.recalc = &omap3_clkoutx2_recalc,
};
@ -886,7 +858,6 @@ static struct clk dpll4_m6_ck = {
.clksel_reg = OMAP_CM_REGADDR(OMAP3430_EMU_MOD, CM_CLKSEL1),
.clksel_mask = OMAP3430_DIV_DPLL4_MASK,
.clksel = div16_dpll4_clksel,
.flags = RATE_PROPAGATES,
.clkdm_name = "dpll4_clkdm",
.recalc = &omap2_clksel_recalc,
};
@ -899,7 +870,7 @@ static struct clk dpll4_m6x2_ck = {
.init = &omap2_init_clksel_parent,
.enable_reg = OMAP_CM_REGADDR(PLL_MOD, CM_CLKEN),
.enable_bit = OMAP3430_PWRDN_EMU_PERIPH_SHIFT,
.flags = RATE_PROPAGATES | INVERT_ENABLE,
.flags = INVERT_ENABLE,
.clkdm_name = "dpll4_clkdm",
.recalc = &omap3_clkoutx2_recalc,
};
@ -908,7 +879,6 @@ static struct clk emu_per_alwon_ck = {
.name = "emu_per_alwon_ck",
.ops = &clkops_null,
.parent = &dpll4_m6x2_ck,
.flags = RATE_PROPAGATES,
.clkdm_name = "dpll4_clkdm",
.recalc = &followparent_recalc,
};
@ -943,7 +913,6 @@ static struct clk dpll5_ck = {
.ops = &clkops_noncore_dpll_ops,
.parent = &sys_ck,
.dpll_data = &dpll5_dd,
.flags = RATE_PROPAGATES,
.round_rate = &omap2_dpll_round_rate,
.set_rate = &omap3_noncore_dpll_set_rate,
.clkdm_name = "dpll5_clkdm",
@ -963,7 +932,6 @@ static struct clk dpll5_m2_ck = {
.clksel_reg = OMAP_CM_REGADDR(PLL_MOD, OMAP3430ES2_CM_CLKSEL5),
.clksel_mask = OMAP3430ES2_DIV_120M_MASK,
.clksel = div16_dpll5_clksel,
.flags = RATE_PROPAGATES,
.clkdm_name = "dpll5_clkdm",
.recalc = &omap2_clksel_recalc,
};
@ -982,7 +950,6 @@ static struct clk omap_120m_fck = {
.clksel_reg = OMAP_CM_REGADDR(PLL_MOD, CM_IDLEST2),
.clksel_mask = OMAP3430ES2_ST_PERIPH2_CLK_MASK,
.clksel = omap_120m_fck_clksel,
.flags = RATE_PROPAGATES,
.recalc = &omap2_clksel_recalc,
};
@ -1025,7 +992,6 @@ static struct clk clkout2_src_ck = {
.clksel_reg = OMAP3430_CM_CLKOUT_CTRL,
.clksel_mask = OMAP3430_CLKOUT2SOURCE_MASK,
.clksel = clkout2_src_clksel,
.flags = RATE_PROPAGATES,
.clkdm_name = "core_clkdm",
.recalc = &omap2_clksel_recalc,
};
@ -1060,7 +1026,6 @@ static struct clk corex2_fck = {
.name = "corex2_fck",
.ops = &clkops_null,
.parent = &dpll3_m2x2_ck,
.flags = RATE_PROPAGATES,
.recalc = &followparent_recalc,
};
@ -1090,7 +1055,6 @@ static struct clk dpll1_fck = {
.clksel_reg = OMAP_CM_REGADDR(MPU_MOD, OMAP3430_CM_CLKSEL1_PLL),
.clksel_mask = OMAP3430_MPU_CLK_SRC_MASK,
.clksel = div4_core_clksel,
.flags = RATE_PROPAGATES,
.recalc = &omap2_clksel_recalc,
};
@ -1114,7 +1078,6 @@ static struct clk mpu_ck = {
.clksel_reg = OMAP_CM_REGADDR(MPU_MOD, OMAP3430_CM_IDLEST_PLL),
.clksel_mask = OMAP3430_ST_MPU_CLK_MASK,
.clksel = mpu_clksel,
.flags = RATE_PROPAGATES,
.clkdm_name = "mpu_clkdm",
.recalc = &omap2_clksel_recalc,
};
@ -1139,7 +1102,6 @@ static struct clk arm_fck = {
.clksel_reg = OMAP_CM_REGADDR(MPU_MOD, OMAP3430_CM_IDLEST_PLL),
.clksel_mask = OMAP3430_ST_MPU_CLK_MASK,
.clksel = arm_fck_clksel,
.flags = RATE_PROPAGATES,
.recalc = &omap2_clksel_recalc,
};
@ -1153,7 +1115,6 @@ static struct clk emu_mpu_alwon_ck = {
.name = "emu_mpu_alwon_ck",
.ops = &clkops_null,
.parent = &mpu_ck,
.flags = RATE_PROPAGATES,
.recalc = &followparent_recalc,
};
@ -1165,7 +1126,6 @@ static struct clk dpll2_fck = {
.clksel_reg = OMAP_CM_REGADDR(OMAP3430_IVA2_MOD, OMAP3430_CM_CLKSEL1_PLL),
.clksel_mask = OMAP3430_IVA2_CLK_SRC_MASK,
.clksel = div4_core_clksel,
.flags = RATE_PROPAGATES,
.recalc = &omap2_clksel_recalc,
};
@ -1193,7 +1153,6 @@ static struct clk iva2_ck = {
OMAP3430_CM_IDLEST_PLL),
.clksel_mask = OMAP3430_ST_IVA2_CLK_MASK,
.clksel = iva2_clksel,
.flags = RATE_PROPAGATES,
.clkdm_name = "iva2_clkdm",
.recalc = &omap2_clksel_recalc,
};
@ -1213,7 +1172,6 @@ static struct clk l3_ick = {
.clksel_reg = OMAP_CM_REGADDR(CORE_MOD, CM_CLKSEL),
.clksel_mask = OMAP3430_CLKSEL_L3_MASK,
.clksel = div2_core_clksel,
.flags = RATE_PROPAGATES,
.clkdm_name = "core_l3_clkdm",
.recalc = &omap2_clksel_recalc,
};
@ -1231,7 +1189,6 @@ static struct clk l4_ick = {
.clksel_reg = OMAP_CM_REGADDR(CORE_MOD, CM_CLKSEL),
.clksel_mask = OMAP3430_CLKSEL_L4_MASK,
.clksel = div2_l3_clksel,
.flags = RATE_PROPAGATES,
.clkdm_name = "core_l4_clkdm",
.recalc = &omap2_clksel_recalc,
@ -1281,7 +1238,6 @@ static struct clk gfx_l3_fck = {
.clksel_reg = OMAP_CM_REGADDR(GFX_MOD, CM_CLKSEL),
.clksel_mask = OMAP_CLKSEL_GFX_MASK,
.clksel = gfx_l3_clksel,
.flags = RATE_PROPAGATES,
.clkdm_name = "gfx_3430es1_clkdm",
.recalc = &omap2_clksel_recalc,
};
@ -1440,7 +1396,6 @@ static struct clk core_96m_fck = {
.name = "core_96m_fck",
.ops = &clkops_null,
.parent = &omap_96m_fck,
.flags = RATE_PROPAGATES,
.clkdm_name = "core_l4_clkdm",
.recalc = &followparent_recalc,
};
@ -1574,7 +1529,6 @@ static struct clk core_48m_fck = {
.name = "core_48m_fck",
.ops = &clkops_null,
.parent = &omap_48m_fck,
.flags = RATE_PROPAGATES,
.clkdm_name = "core_l4_clkdm",
.recalc = &followparent_recalc,
};
@ -1652,7 +1606,6 @@ static struct clk core_12m_fck = {
.name = "core_12m_fck",
.ops = &clkops_null,
.parent = &omap_12m_fck,
.flags = RATE_PROPAGATES,
.clkdm_name = "core_l4_clkdm",
.recalc = &followparent_recalc,
};
@ -1692,7 +1645,6 @@ static struct clk ssi_ssr_fck = {
.clksel_reg = OMAP_CM_REGADDR(CORE_MOD, CM_CLKSEL),
.clksel_mask = OMAP3430_CLKSEL_SSI_MASK,
.clksel = ssi_ssr_clksel,
.flags = RATE_PROPAGATES,
.clkdm_name = "core_l4_clkdm",
.recalc = &omap2_clksel_recalc,
};
@ -1718,7 +1670,6 @@ static struct clk core_l3_ick = {
.ops = &clkops_null,
.parent = &l3_ick,
.init = &omap2_init_clk_clkdm,
.flags = RATE_PROPAGATES,
.clkdm_name = "core_l3_clkdm",
.recalc = &followparent_recalc,
};
@ -1759,7 +1710,6 @@ static struct clk security_l3_ick = {
.name = "security_l3_ick",
.ops = &clkops_null,
.parent = &l3_ick,
.flags = RATE_PROPAGATES,
.recalc = &followparent_recalc,
};
@ -1779,7 +1729,6 @@ static struct clk core_l4_ick = {
.ops = &clkops_null,
.parent = &l4_ick,
.init = &omap2_init_clk_clkdm,
.flags = RATE_PROPAGATES,
.clkdm_name = "core_l4_clkdm",
.recalc = &followparent_recalc,
};
@ -2062,7 +2011,6 @@ static struct clk ssi_l4_ick = {
.name = "ssi_l4_ick",
.ops = &clkops_null,
.parent = &l4_ick,
.flags = RATE_PROPAGATES,
.clkdm_name = "core_l4_clkdm",
.recalc = &followparent_recalc,
};
@ -2106,7 +2054,6 @@ static struct clk security_l4_ick2 = {
.name = "security_l4_ick2",
.ops = &clkops_null,
.parent = &l4_ick,
.flags = RATE_PROPAGATES,
.recalc = &followparent_recalc,
};
@ -2350,7 +2297,6 @@ static struct clk wkup_32k_fck = {
.ops = &clkops_null,
.init = &omap2_init_clk_clkdm,
.parent = &omap_32k_fck,
.flags = RATE_PROPAGATES,
.clkdm_name = "wkup_clkdm",
.recalc = &followparent_recalc,
};
@ -2379,7 +2325,6 @@ static struct clk wkup_l4_ick = {
.name = "wkup_l4_ick",
.ops = &clkops_null,
.parent = &sys_ck,
.flags = RATE_PROPAGATES,
.clkdm_name = "wkup_clkdm",
.recalc = &followparent_recalc,
};
@ -2466,7 +2411,6 @@ static struct clk per_96m_fck = {
.ops = &clkops_null,
.parent = &omap_96m_alwon_fck,
.init = &omap2_init_clk_clkdm,
.flags = RATE_PROPAGATES,
.clkdm_name = "per_clkdm",
.recalc = &followparent_recalc,
};
@ -2476,7 +2420,6 @@ static struct clk per_48m_fck = {
.ops = &clkops_null,
.parent = &omap_48m_fck,
.init = &omap2_init_clk_clkdm,
.flags = RATE_PROPAGATES,
.clkdm_name = "per_clkdm",
.recalc = &followparent_recalc,
};
@ -2600,7 +2543,6 @@ static struct clk per_32k_alwon_fck = {
.ops = &clkops_null,
.parent = &omap_32k_fck,
.clkdm_name = "per_clkdm",
.flags = RATE_PROPAGATES,
.recalc = &followparent_recalc,
};
@ -2668,7 +2610,6 @@ static struct clk per_l4_ick = {
.name = "per_l4_ick",
.ops = &clkops_null,
.parent = &l4_ick,
.flags = RATE_PROPAGATES,
.clkdm_name = "per_clkdm",
.recalc = &followparent_recalc,
};
@ -2948,7 +2889,6 @@ static struct clk emu_src_ck = {
.clksel_reg = OMAP_CM_REGADDR(OMAP3430_EMU_MOD, CM_CLKSEL1),
.clksel_mask = OMAP3430_MUX_CTRL_MASK,
.clksel = emu_src_clksel,
.flags = RATE_PROPAGATES,
.clkdm_name = "emu_clkdm",
.recalc = &omap2_clksel_recalc,
};
@ -2973,7 +2913,6 @@ static struct clk pclk_fck = {
.clksel_reg = OMAP_CM_REGADDR(OMAP3430_EMU_MOD, CM_CLKSEL1),
.clksel_mask = OMAP3430_CLKSEL_PCLK_MASK,
.clksel = pclk_emu_clksel,
.flags = RATE_PROPAGATES,
.clkdm_name = "emu_clkdm",
.recalc = &omap2_clksel_recalc,
};
@ -2997,7 +2936,6 @@ static struct clk pclkx2_fck = {
.clksel_reg = OMAP_CM_REGADDR(OMAP3430_EMU_MOD, CM_CLKSEL1),
.clksel_mask = OMAP3430_CLKSEL_PCLKX2_MASK,
.clksel = pclkx2_emu_clksel,
.flags = RATE_PROPAGATES,
.clkdm_name = "emu_clkdm",
.recalc = &omap2_clksel_recalc,
};
@ -3014,7 +2952,6 @@ static struct clk atclk_fck = {
.clksel_reg = OMAP_CM_REGADDR(OMAP3430_EMU_MOD, CM_CLKSEL1),
.clksel_mask = OMAP3430_CLKSEL_ATCLK_MASK,
.clksel = atclk_emu_clksel,
.flags = RATE_PROPAGATES,
.clkdm_name = "emu_clkdm",
.recalc = &omap2_clksel_recalc,
};
@ -3026,7 +2963,6 @@ static struct clk traceclk_src_fck = {
.clksel_reg = OMAP_CM_REGADDR(OMAP3430_EMU_MOD, CM_CLKSEL1),
.clksel_mask = OMAP3430_TRACE_MUX_CTRL_MASK,
.clksel = emu_src_clksel,
.flags = RATE_PROPAGATES,
.clkdm_name = "emu_clkdm",
.recalc = &omap2_clksel_recalc,
};
@ -3063,7 +2999,6 @@ static struct clk sr1_fck = {
.parent = &sys_ck,
.enable_reg = OMAP_CM_REGADDR(WKUP_MOD, CM_FCLKEN),
.enable_bit = OMAP3430_EN_SR1_SHIFT,
.flags = RATE_PROPAGATES,
.recalc = &followparent_recalc,
};
@ -3074,7 +3009,6 @@ static struct clk sr2_fck = {
.parent = &sys_ck,
.enable_reg = OMAP_CM_REGADDR(WKUP_MOD, CM_FCLKEN),
.enable_bit = OMAP3430_EN_SR2_SHIFT,
.flags = RATE_PROPAGATES,
.recalc = &followparent_recalc,
};

51
arch/arm/plat-omap/clock.c
View file

@ -143,8 +143,7 @@ int clk_set_rate(struct clk *clk, unsigned long rate)
if (ret == 0) {
if (clk->recalc)
clk->recalc(clk);
if (clk->flags & RATE_PROPAGATES)
propagate_rate(clk);
propagate_rate(clk);
}
spin_unlock_irqrestore(&clockfw_lock, flags);
@ -166,8 +165,7 @@ int clk_set_parent(struct clk *clk, struct clk *parent)
if (ret == 0) {
if (clk->recalc)
clk->recalc(clk);
if (clk->flags & RATE_PROPAGATES)
propagate_rate(clk);
propagate_rate(clk);
}
spin_unlock_irqrestore(&clockfw_lock, flags);
@ -214,24 +212,31 @@ void followparent_recalc(struct clk *clk)
clk->rate = clk->parent->rate;
}
void clk_reparent(struct clk *child, struct clk *parent)
{
list_del_init(&child->sibling);
if (parent)
list_add(&child->sibling, &parent->children);
child->parent = parent;
/* now do the debugfs renaming to reattach the child
to the proper parent */
}
/* Propagate rate to children */
void propagate_rate(struct clk * tclk)
{
struct clk *clkp;
if (tclk == NULL || IS_ERR(tclk))
return;
list_for_each_entry(clkp, &clocks, node) {
if (likely(clkp->parent != tclk))
continue;
list_for_each_entry(clkp, &tclk->children, sibling) {
if (clkp->recalc)
clkp->recalc(clkp);
if (clkp->flags & RATE_PROPAGATES)
propagate_rate(clkp);
propagate_rate(clkp);
}
}
static LIST_HEAD(root_clks);
/**
* recalculate_root_clocks - recalculate and propagate all root clocks
*
@ -243,16 +248,18 @@ void recalculate_root_clocks(void)
{
struct clk *clkp;
list_for_each_entry(clkp, &clocks, node) {
if (!clkp->parent) {
if (clkp->recalc)
clkp->recalc(clkp);
if (clkp->flags & RATE_PROPAGATES)
propagate_rate(clkp);
}
list_for_each_entry(clkp, &root_clks, sibling) {
if (clkp->recalc)
clkp->recalc(clkp);
propagate_rate(clkp);
}
}
void clk_init_one(struct clk *clk)
{
INIT_LIST_HEAD(&clk->children);
}
int clk_register(struct clk *clk)
{
if (clk == NULL || IS_ERR(clk))
@ -265,6 +272,11 @@ int clk_register(struct clk *clk)
return 0;
mutex_lock(&clocks_mutex);
if (clk->parent)
list_add(&clk->sibling, &clk->parent->children);
else
list_add(&clk->sibling, &root_clks);
list_add(&clk->node, &clocks);
if (clk->init)
clk->init(clk);
@ -280,6 +292,7 @@ void clk_unregister(struct clk *clk)
return;
mutex_lock(&clocks_mutex);
list_del(&clk->sibling);
list_del(&clk->node);
mutex_unlock(&clocks_mutex);
}

7
arch/arm/plat-omap/include/mach/clock.h
View file

@ -70,6 +70,8 @@ struct clk {
const char *name;
int id;
struct clk *parent;
struct list_head children;
struct list_head sibling; /* node for children */
unsigned long rate;
__u32 flags;
void __iomem *enable_reg;
@ -115,7 +117,9 @@ struct clk_functions {
extern unsigned int mpurate;
extern int clk_init(struct clk_functions *custom_clocks);
extern void clk_init_one(struct clk *clk);
extern int clk_register(struct clk *clk);
extern void clk_reparent(struct clk *child, struct clk *parent);
extern void clk_unregister(struct clk *clk);
extern void propagate_rate(struct clk *clk);
extern void recalculate_root_clocks(void);
@ -131,8 +135,7 @@ extern const struct clkops clkops_null;
/* Clock flags */
/* bit 0 is free */
#define RATE_FIXED (1 << 1) /* Fixed clock rate */
#define RATE_PROPAGATES (1 << 2) /* Program children too */
/* bits 3-4 are free */
/* bits 2-4 are free */
#define ENABLE_REG_32BIT (1 << 5) /* Use 32-bit access */
#define CLOCK_IDLE_CONTROL (1 << 7)
#define CLOCK_NO_IDLE_PARENT (1 << 8)