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-rw-r--r--arch/sh/kernel/cpu/sh4a/clock-sh7722.c796
1 files changed, 137 insertions, 659 deletions
diff --git a/arch/sh/kernel/cpu/sh4a/clock-sh7722.c b/arch/sh/kernel/cpu/sh4a/clock-sh7722.c
index 6ca7c745580d..40f859354f79 100644
--- a/arch/sh/kernel/cpu/sh4a/clock-sh7722.c
+++ b/arch/sh/kernel/cpu/sh4a/clock-sh7722.c
@@ -1,719 +1,197 @@
/*
* arch/sh/kernel/cpu/sh4a/clock-sh7722.c
*
- * SH7722 support for the clock framework
+ * SH7722 clock framework support
*
- * Copyright (c) 2006-2007 Nomad Global Solutions Inc
- * Based on code for sh7343 by Paul Mundt
+ * Copyright (C) 2009 Magnus Damm
*
- * This file is subject to the terms and conditions of the GNU General Public
- * License. See the file "COPYING" in the main directory of this archive
- * for more details.
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
*/
#include <linux/init.h>
#include <linux/kernel.h>
#include <linux/io.h>
-#include <linux/errno.h>
-#include <linux/stringify.h>
#include <asm/clock.h>
-#include <asm/freq.h>
-
-#define N (-1)
-#define NM (-2)
-#define ROUND_NEAREST 0
-#define ROUND_DOWN -1
-#define ROUND_UP +1
-
-static int adjust_algos[][3] = {
- {}, /* NO_CHANGE */
- { NM, N, 1 }, /* N:1, N:1 */
- { 3, 2, 2 }, /* 3:2:2 */
- { 5, 2, 2 }, /* 5:2:2 */
- { N, 1, 1 }, /* N:1:1 */
-
- { N, 1 }, /* N:1 */
- { N, 1 }, /* N:1 */
- { 3, 2 },
- { 4, 3 },
- { 5, 4 },
-
- { N, 1 }
+/* SH7722 registers */
+#define FRQCR 0xa4150000
+#define VCLKCR 0xa4150004
+#define SCLKACR 0xa4150008
+#define SCLKBCR 0xa415000c
+#define IRDACLKCR 0xa4150018
+#define PLLCR 0xa4150024
+#define MSTPCR0 0xa4150030
+#define MSTPCR1 0xa4150034
+#define MSTPCR2 0xa4150038
+#define DLLFRQ 0xa4150050
+
+/* Fixed 32 KHz root clock for RTC and Power Management purposes */
+static struct clk r_clk = {
+ .name = "rclk",
+ .id = -1,
+ .rate = 32768,
};
-static unsigned long adjust_pair_of_clocks(unsigned long r1, unsigned long r2,
- int m1, int m2, int round_flag)
-{
- unsigned long rem, div;
- int the_one = 0;
-
- pr_debug( "Actual values: r1 = %ld\n", r1);
- pr_debug( "...............r2 = %ld\n", r2);
-
- if (m1 == m2) {
- r2 = r1;
- pr_debug( "setting equal rates: r2 now %ld\n", r2);
- } else if ((m2 == N && m1 == 1) ||
- (m2 == NM && m1 == N)) { /* N:1 or NM:N */
- pr_debug( "Setting rates as 1:N (N:N*M)\n");
- rem = r2 % r1;
- pr_debug( "...remainder = %ld\n", rem);
- if (rem) {
- div = r2 / r1;
- pr_debug( "...div = %ld\n", div);
- switch (round_flag) {
- case ROUND_NEAREST:
- the_one = rem >= r1/2 ? 1 : 0; break;
- case ROUND_UP:
- the_one = 1; break;
- case ROUND_DOWN:
- the_one = 0; break;
- }
-
- r2 = r1 * (div + the_one);
- pr_debug( "...setting r2 to %ld\n", r2);
- }
- } else if ((m2 == 1 && m1 == N) ||
- (m2 == N && m1 == NM)) { /* 1:N or N:NM */
- pr_debug( "Setting rates as N:1 (N*M:N)\n");
- rem = r1 % r2;
- pr_debug( "...remainder = %ld\n", rem);
- if (rem) {
- div = r1 / r2;
- pr_debug( "...div = %ld\n", div);
- switch (round_flag) {
- case ROUND_NEAREST:
- the_one = rem > r2/2 ? 1 : 0; break;
- case ROUND_UP:
- the_one = 0; break;
- case ROUND_DOWN:
- the_one = 1; break;
- }
-
- r2 = r1 / (div + the_one);
- pr_debug( "...setting r2 to %ld\n", r2);
- }
- } else { /* value:value */
- pr_debug( "Setting rates as %d:%d\n", m1, m2);
- div = r1 / m1;
- r2 = div * m2;
- pr_debug( "...div = %ld\n", div);
- pr_debug( "...setting r2 to %ld\n", r2);
- }
-
- return r2;
-}
-
-static void adjust_clocks(int originate, int *l, unsigned long v[],
- int n_in_line)
-{
- int x;
-
- pr_debug( "Go down from %d...\n", originate);
- /* go up recalculation clocks */
- for (x = originate; x>0; x -- )
- v[x-1] = adjust_pair_of_clocks(v[x], v[x-1],
- l[x], l[x-1],
- ROUND_UP);
-
- pr_debug( "Go up from %d...\n", originate);
- /* go down recalculation clocks */
- for (x = originate; x<n_in_line - 1; x ++ )
- v[x+1] = adjust_pair_of_clocks(v[x], v[x+1],
- l[x], l[x+1],
- ROUND_UP);
-}
-
-
/*
- * SH7722 uses a common set of multipliers and divisors, so this
- * is quite simple..
+ * Default rate for the root input clock, reset this with clk_set_rate()
+ * from the platform code.
*/
-
-#define STCPLL(frqcr) (((frqcr >> 24) & 0x1f) + 1)
-
-/*
- * Instead of having two separate multipliers/divisors set, like this:
- *
- * static int multipliers[] = { 1, 2, 1, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1 };
- * static int divisors[] = { 1, 3, 2, 5, 3, 4, 5, 6, 8, 10, 12, 16, 20 };
- *
- * I created the divisors2 array, which is used to calculate rate like
- * rate = parent * 2 / divisors2[ divisor ];
-*/
-static int divisors2[] = { 2, 3, 4, 5, 6, 8, 10, 12, 16, 20, 24, 32, 40 };
-
-static unsigned long master_clk_recalc(struct clk *clk)
-{
- unsigned frqcr = ctrl_inl(FRQCR);
-
- return CONFIG_SH_PCLK_FREQ * STCPLL(frqcr);
-}
-
-static void master_clk_init(struct clk *clk)
-{
- clk->parent = NULL;
- clk->rate = master_clk_recalc(clk);
-}
-
-static unsigned long module_clk_recalc(struct clk *clk)
-{
- unsigned long frqcr = ctrl_inl(FRQCR);
-
- return clk->parent->rate / STCPLL(frqcr);
-}
-
-#define MASTERDIVS { 2, 3, 4, 6, 8, 16 }
-#define STCMASK 0x1f
-#define DIVCALC(div) (div-1)
-#define FRQCRKICK 0x00000000
-
-static int master_clk_setrate(struct clk *clk, unsigned long rate, int id)
-{
- int div = rate / clk->rate;
- int master_divs[] = MASTERDIVS;
- int index;
- unsigned long frqcr;
-
- for (index = 1; index < ARRAY_SIZE(master_divs); index++)
- if (div >= master_divs[index - 1] && div < master_divs[index])
- break;
-
- if (index >= ARRAY_SIZE(master_divs))
- index = ARRAY_SIZE(master_divs);
- div = master_divs[index - 1];
-
- frqcr = ctrl_inl(FRQCR);
- frqcr &= ~(STCMASK << 24);
- frqcr |= (DIVCALC(div) << 24);
- frqcr |= FRQCRKICK;
- ctrl_outl(frqcr, FRQCR);
-
- return 0;
-}
-
-static struct clk_ops sh7722_master_clk_ops = {
- .init = master_clk_init,
- .recalc = master_clk_recalc,
- .set_rate = master_clk_setrate,
-};
-
-static struct clk_ops sh7722_module_clk_ops = {
- .recalc = module_clk_recalc,
-};
-
-struct frqcr_context {
- unsigned mask;
- unsigned shift;
-};
-
-struct frqcr_context sh7722_get_clk_context(const char *name)
-{
- struct frqcr_context ctx = { 0, };
-
- if (!strcmp(name, "peripheral_clk")) {
- ctx.shift = 0;
- ctx.mask = 0xF;
- } else if (!strcmp(name, "sdram_clk")) {
- ctx.shift = 4;
- ctx.mask = 0xF;
- } else if (!strcmp(name, "bus_clk")) {
- ctx.shift = 8;
- ctx.mask = 0xF;
- } else if (!strcmp(name, "sh_clk")) {
- ctx.shift = 12;
- ctx.mask = 0xF;
- } else if (!strcmp(name, "umem_clk")) {
- ctx.shift = 16;
- ctx.mask = 0xF;
- } else if (!strcmp(name, "cpu_clk")) {
- ctx.shift = 20;
- ctx.mask = 7;
- }
- return ctx;
-}
-
-/**
- * sh7722_find_div_index - find divisor for setting rate
- *
- * All sh7722 clocks use the same set of multipliers/divisors. This function
- * chooses correct divisor to set the rate of clock with parent clock that
- * generates frequency of 'parent_rate'
- *
- * @parent_rate: rate of parent clock
- * @rate: requested rate to be set
- */
-static int sh7722_find_div_index(unsigned long parent_rate, unsigned rate)
-{
- unsigned div2 = parent_rate * 2 / rate;
- int index;
-
- if (rate > parent_rate)
- return -EINVAL;
-
- for (index = 1; index < ARRAY_SIZE(divisors2); index++) {
- if (div2 > divisors2[index - 1] && div2 <= divisors2[index])
- break;
- }
- if (index >= ARRAY_SIZE(divisors2))
- index = ARRAY_SIZE(divisors2) - 1;
- return index;
-}
-
-static unsigned long sh7722_frqcr_recalc(struct clk *clk)
-{
- struct frqcr_context ctx = sh7722_get_clk_context(clk->name);
- unsigned long frqcr = ctrl_inl(FRQCR);
- int index;
-
- index = (frqcr >> ctx.shift) & ctx.mask;
- return clk->parent->rate * 2 / divisors2[index];
-}
-
-static int sh7722_frqcr_set_rate(struct clk *clk, unsigned long rate,
- int algo_id)
-{
- struct frqcr_context ctx = sh7722_get_clk_context(clk->name);
- unsigned long parent_rate = clk->parent->rate;
- int div;
- unsigned long frqcr;
- int err = 0;
-
- /* pretty invalid */
- if (parent_rate < rate)
- return -EINVAL;
-
- /* look for multiplier/divisor pair */
- div = sh7722_find_div_index(parent_rate, rate);
- if (div<0)
- return div;
-
- /* calculate new value of clock rate */
- clk->rate = parent_rate * 2 / divisors2[div];
- frqcr = ctrl_inl(FRQCR);
-
- /* FIXME: adjust as algo_id specifies */
- if (algo_id != NO_CHANGE) {
- int originator;
- char *algo_group_1[] = { "cpu_clk", "umem_clk", "sh_clk" };
- char *algo_group_2[] = { "sh_clk", "bus_clk" };
- char *algo_group_3[] = { "sh_clk", "sdram_clk" };
- char *algo_group_4[] = { "bus_clk", "peripheral_clk" };
- char *algo_group_5[] = { "cpu_clk", "peripheral_clk" };
- char **algo_current = NULL;
- /* 3 is the maximum number of clocks in relation */
- struct clk *ck[3];
- unsigned long values[3]; /* the same comment as above */
- int part_length = -1;
- int i;
-
- /*
- * all the steps below only required if adjustion was
- * requested
- */
- if (algo_id == IUS_N1_N1 ||
- algo_id == IUS_322 ||
- algo_id == IUS_522 ||
- algo_id == IUS_N11) {
- algo_current = algo_group_1;
- part_length = 3;
- }
- if (algo_id == SB_N1) {
- algo_current = algo_group_2;
- part_length = 2;
- }
- if (algo_id == SB3_N1 ||
- algo_id == SB3_32 ||
- algo_id == SB3_43 ||
- algo_id == SB3_54) {
- algo_current = algo_group_3;
- part_length = 2;
- }
- if (algo_id == BP_N1) {
- algo_current = algo_group_4;
- part_length = 2;
- }
- if (algo_id == IP_N1) {
- algo_current = algo_group_5;
- part_length = 2;
- }
- if (!algo_current)
- goto incorrect_algo_id;
-
- originator = -1;
- for (i = 0; i < part_length; i ++ ) {
- if (originator >= 0 && !strcmp(clk->name,
- algo_current[i]))
- originator = i;
- ck[i] = clk_get(NULL, algo_current[i]);
- values[i] = clk_get_rate(ck[i]);
- }
-
- if (originator >= 0)
- adjust_clocks(originator, adjust_algos[algo_id],
- values, part_length);
-
- for (i = 0; i < part_length; i ++ ) {
- struct frqcr_context part_ctx;
- int part_div;
-
- if (likely(!err)) {
- part_div = sh7722_find_div_index(parent_rate,
- rate);
- if (part_div > 0) {
- part_ctx = sh7722_get_clk_context(
- ck[i]->name);
- frqcr &= ~(part_ctx.mask <<
- part_ctx.shift);
- frqcr |= part_div << part_ctx.shift;
- } else
- err = part_div;
- }
-
- ck[i]->ops->recalc(ck[i]);
- clk_put(ck[i]);
- }
- }
-
- /* was there any error during recalculation ? If so, bail out.. */
- if (unlikely(err!=0))
- goto out_err;
-
- /* clear FRQCR bits */
- frqcr &= ~(ctx.mask << ctx.shift);
- frqcr |= div << ctx.shift;
- frqcr |= FRQCRKICK;
-
- /* ...and perform actual change */
- ctrl_outl(frqcr, FRQCR);
- return 0;
-
-incorrect_algo_id:
- return -EINVAL;
-out_err:
- return err;
-}
-
-static long sh7722_frqcr_round_rate(struct clk *clk, unsigned long rate)
-{
- unsigned long parent_rate = clk->parent->rate;
- int div;
-
- /* look for multiplier/divisor pair */
- div = sh7722_find_div_index(parent_rate, rate);
- if (div < 0)
- return clk->rate;
-
- /* calculate new value of clock rate */
- return parent_rate * 2 / divisors2[div];
-}
-
-static struct clk_ops sh7722_frqcr_clk_ops = {
- .recalc = sh7722_frqcr_recalc,
- .set_rate = sh7722_frqcr_set_rate,
- .round_rate = sh7722_frqcr_round_rate,
+struct clk extal_clk = {
+ .name = "extal",
+ .id = -1,
+ .rate = 33333333,
};
-/*
- * clock ops methods for SIU A/B and IrDA clock
- */
-static int sh7722_siu_set_rate(struct clk *clk, unsigned long rate, int algo_id)
-{
- unsigned long r;
- int div;
-
- r = ctrl_inl(clk->arch_flags);
- div = sh7722_find_div_index(clk->parent->rate, rate);
- if (div < 0)
- return div;
- r = (r & ~0xF) | div;
- ctrl_outl(r, clk->arch_flags);
- return 0;
-}
-
-static unsigned long sh7722_siu_recalc(struct clk *clk)
-{
- unsigned long r;
-
- r = ctrl_inl(clk->arch_flags);
- return clk->parent->rate * 2 / divisors2[r & 0xF];
-}
-
-static int sh7722_siu_start_stop(struct clk *clk, int enable)
+/* The dll block multiplies the 32khz r_clk, may be used instead of extal */
+static unsigned long dll_recalc(struct clk *clk)
{
- unsigned long r;
+ unsigned long mult;
- r = ctrl_inl(clk->arch_flags);
- if (enable)
- ctrl_outl(r & ~(1 << 8), clk->arch_flags);
+ if (__raw_readl(PLLCR) & 0x1000)
+ mult = __raw_readl(DLLFRQ);
else
- ctrl_outl(r | (1 << 8), clk->arch_flags);
- return 0;
-}
+ mult = 0;
-static int sh7722_siu_enable(struct clk *clk)
-{
- return sh7722_siu_start_stop(clk, 1);
-}
-
-static void sh7722_siu_disable(struct clk *clk)
-{
- sh7722_siu_start_stop(clk, 0);
+ return clk->parent->rate * mult;
}
-static struct clk_ops sh7722_siu_clk_ops = {
- .recalc = sh7722_siu_recalc,
- .set_rate = sh7722_siu_set_rate,
- .enable = sh7722_siu_enable,
- .disable = sh7722_siu_disable,
+static struct clk_ops dll_clk_ops = {
+ .recalc = dll_recalc,
};
-static int sh7722_video_enable(struct clk *clk)
-{
- unsigned long r;
-
- r = ctrl_inl(VCLKCR);
- ctrl_outl( r & ~(1<<8), VCLKCR);
- return 0;
-}
-
-static void sh7722_video_disable(struct clk *clk)
-{
- unsigned long r;
-
- r = ctrl_inl(VCLKCR);
- ctrl_outl( r | (1<<8), VCLKCR);
-}
+static struct clk dll_clk = {
+ .name = "dll_clk",
+ .id = -1,
+ .ops = &dll_clk_ops,
+ .parent = &r_clk,
+ .flags = CLK_ENABLE_ON_INIT,
+};
-static int sh7722_video_set_rate(struct clk *clk, unsigned long rate,
- int algo_id)
+static unsigned long pll_recalc(struct clk *clk)
{
- unsigned long r;
+ unsigned long mult = 1;
+ unsigned long div = 1;
- r = ctrl_inl(VCLKCR);
- r &= ~0x3F;
- r |= ((clk->parent->rate / rate - 1) & 0x3F);
- ctrl_outl(r, VCLKCR);
- return 0;
-}
-
-static unsigned long sh7722_video_recalc(struct clk *clk)
-{
- unsigned long r;
+ if (__raw_readl(PLLCR) & 0x4000)
+ mult = (((__raw_readl(FRQCR) >> 24) & 0x1f) + 1);
+ else
+ div = 2;
- r = ctrl_inl(VCLKCR);
- return clk->parent->rate / ((r & 0x3F) + 1);
+ return (clk->parent->rate * mult) / div;
}
-static struct clk_ops sh7722_video_clk_ops = {
- .recalc = sh7722_video_recalc,
- .set_rate = sh7722_video_set_rate,
- .enable = sh7722_video_enable,
- .disable = sh7722_video_disable,
-};
-/*
- * and at last, clock definitions themselves
- */
-static struct clk sh7722_umem_clock = {
- .name = "umem_clk",
- .ops = &sh7722_frqcr_clk_ops,
+static struct clk_ops pll_clk_ops = {
+ .recalc = pll_recalc,
};
-static struct clk sh7722_sh_clock = {
- .name = "sh_clk",
- .ops = &sh7722_frqcr_clk_ops,
+static struct clk pll_clk = {
+ .name = "pll_clk",
+ .id = -1,
+ .ops = &pll_clk_ops,
+ .flags = CLK_ENABLE_ON_INIT,
};
-static struct clk sh7722_peripheral_clock = {
- .name = "peripheral_clk",
- .ops = &sh7722_frqcr_clk_ops,
+struct clk *main_clks[] = {
+ &r_clk,
+ &extal_clk,
+ &dll_clk,
+ &pll_clk,
};
-static struct clk sh7722_sdram_clock = {
- .name = "sdram_clk",
- .ops = &sh7722_frqcr_clk_ops,
-};
+static int multipliers[] = { 1, 2, 1, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1 };
+static int divisors[] = { 1, 3, 2, 5, 3, 4, 5, 6, 8, 10, 12, 16, 20 };
-static struct clk sh7722_r_clock = {
- .name = "r_clk",
- .rate = 32768,
+static struct clk_div_mult_table div4_table = {
+ .divisors = divisors,
+ .nr_divisors = ARRAY_SIZE(divisors),
+ .multipliers = multipliers,
+ .nr_multipliers = ARRAY_SIZE(multipliers),
};
-/*
- * these three clocks - SIU A, SIU B, IrDA - share the same clk_ops
- * methods of clk_ops determine which register they should access by
- * examining clk->name field
- */
-static struct clk sh7722_siu_a_clock = {
- .name = "siu_a_clk",
- .arch_flags = SCLKACR,
- .ops = &sh7722_siu_clk_ops,
-};
+enum { DIV4_I, DIV4_U, DIV4_SH, DIV4_B, DIV4_B3, DIV4_P,
+ DIV4_SIUA, DIV4_SIUB, DIV4_IRDA, DIV4_NR };
-static struct clk sh7722_siu_b_clock = {
- .name = "siu_b_clk",
- .arch_flags = SCLKBCR,
- .ops = &sh7722_siu_clk_ops,
-};
+#define DIV4(_str, _reg, _bit, _mask, _flags) \
+ SH_CLK_DIV4(_str, &pll_clk, _reg, _bit, _mask, _flags)
-#if defined(CONFIG_CPU_SUBTYPE_SH7722)
-static struct clk sh7722_irda_clock = {
- .name = "irda_clk",
- .arch_flags = IrDACLKCR,
- .ops = &sh7722_siu_clk_ops,
+struct clk div4_clks[DIV4_NR] = {
+ [DIV4_I] = DIV4("cpu_clk", FRQCR, 20, 0x1fef, CLK_ENABLE_ON_INIT),
+ [DIV4_U] = DIV4("umem_clk", FRQCR, 16, 0x1fff, CLK_ENABLE_ON_INIT),
+ [DIV4_SH] = DIV4("shyway_clk", FRQCR, 12, 0x1fff, CLK_ENABLE_ON_INIT),
+ [DIV4_B] = DIV4("bus_clk", FRQCR, 8, 0x1fff, CLK_ENABLE_ON_INIT),
+ [DIV4_B3] = DIV4("b3_clk", FRQCR, 4, 0x1fff, CLK_ENABLE_ON_INIT),
+ [DIV4_P] = DIV4("peripheral_clk", FRQCR, 0, 0x1fff, 0),
+ [DIV4_SIUA] = DIV4("siua_clk", SCLKACR, 0, 0x1fff, 0),
+ [DIV4_SIUB] = DIV4("siub_clk", SCLKBCR, 0, 0x1fff, 0),
+ [DIV4_IRDA] = DIV4("irda_clk", IRDACLKCR, 0, 0x1fff, 0),
};
-#endif
-static struct clk sh7722_video_clock = {
- .name = "video_clk",
- .ops = &sh7722_video_clk_ops,
+struct clk div6_clks[] = {
+ SH_CLK_DIV6("video_clk", &pll_clk, VCLKCR, 0),
};
-#define MSTPCR_ARCH_FLAGS(reg, bit) (((reg) << 8) | (bit))
-#define MSTPCR_ARCH_FLAGS_REG(value) ((value) >> 8)
-#define MSTPCR_ARCH_FLAGS_BIT(value) ((value) & 0xff)
-
-static int sh7722_mstpcr_start_stop(struct clk *clk, int enable)
-{
- unsigned long bit = MSTPCR_ARCH_FLAGS_BIT(clk->arch_flags);
- unsigned long reg;
- unsigned long r;
+#define MSTP(_str, _parent, _reg, _bit, _flags) \
+ SH_CLK_MSTP32(_str, -1, _parent, _reg, _bit, _flags)
- switch(MSTPCR_ARCH_FLAGS_REG(clk->arch_flags)) {
- case 0:
- reg = MSTPCR0;
- break;
- case 1:
- reg = MSTPCR1;
- break;
- case 2:
- reg = MSTPCR2;
- break;
- default:
- return -EINVAL;
- }
+static struct clk mstp_clks[] = {
+ MSTP("uram0", &div4_clks[DIV4_U], MSTPCR0, 28, CLK_ENABLE_ON_INIT),
+ MSTP("xymem0", &div4_clks[DIV4_B], MSTPCR0, 26, CLK_ENABLE_ON_INIT),
+ MSTP("tmu0", &div4_clks[DIV4_P], MSTPCR0, 15, 0),
+ MSTP("cmt0", &r_clk, MSTPCR0, 14, 0),
+ MSTP("rwdt0", &r_clk, MSTPCR0, 13, 0),
+ MSTP("flctl0", &div4_clks[DIV4_P], MSTPCR0, 10, 0),
+ MSTP("scif0", &div4_clks[DIV4_P], MSTPCR0, 7, 0),
+ MSTP("scif1", &div4_clks[DIV4_P], MSTPCR0, 6, 0),
+ MSTP("scif2", &div4_clks[DIV4_P], MSTPCR0, 5, 0),
- r = ctrl_inl(reg);
-
- if (enable)
- r &= ~(1 << bit);
- else
- r |= (1 << bit);
+ MSTP("i2c0", &div4_clks[DIV4_P], MSTPCR1, 9, 0),
+ MSTP("rtc0", &r_clk, MSTPCR1, 8, 0),
- ctrl_outl(r, reg);
- return 0;
-}
-
-static int sh7722_mstpcr_enable(struct clk *clk)
-{
- return sh7722_mstpcr_start_stop(clk, 1);
-}
-
-static void sh7722_mstpcr_disable(struct clk *clk)
-{
- sh7722_mstpcr_start_stop(clk, 0);
-}
-
-static struct clk_ops sh7722_mstpcr_clk_ops = {
- .enable = sh7722_mstpcr_enable,
- .disable = sh7722_mstpcr_disable,
- .recalc = followparent_recalc,
-};
-
-#define MSTPCR(_name, _parent, regnr, bitnr, _flags) \
-{ \
- .name = _name, \
- .flags = _flags, \
- .arch_flags = MSTPCR_ARCH_FLAGS(regnr, bitnr), \
- .ops = (void *)_parent, \
-}
-
-static struct clk sh7722_mstpcr_clocks[] = {
-#if defined(CONFIG_CPU_SUBTYPE_SH7722)
- MSTPCR("uram0", "umem_clk", 0, 28, CLK_ENABLE_ON_INIT),
- MSTPCR("xymem0", "bus_clk", 0, 26, CLK_ENABLE_ON_INIT),
- MSTPCR("tmu0", "peripheral_clk", 0, 15, 0),
- MSTPCR("cmt0", "r_clk", 0, 14, 0),
- MSTPCR("rwdt0", "r_clk", 0, 13, 0),
- MSTPCR("flctl0", "peripheral_clk", 0, 10, 0),
- MSTPCR("scif0", "peripheral_clk", 0, 7, 0),
- MSTPCR("scif1", "peripheral_clk", 0, 6, 0),
- MSTPCR("scif2", "peripheral_clk", 0, 5, 0),
- MSTPCR("i2c0", "peripheral_clk", 1, 9, 0),
- MSTPCR("rtc0", "r_clk", 1, 8, 0),
- MSTPCR("sdhi0", "peripheral_clk", 2, 18, 0),
- MSTPCR("keysc0", "r_clk", 2, 14, 0),
- MSTPCR("usbf0", "peripheral_clk", 2, 11, 0),
- MSTPCR("2dg0", "bus_clk", 2, 9, 0),
- MSTPCR("siu0", "bus_clk", 2, 8, 0),
- MSTPCR("vou0", "bus_clk", 2, 5, 0),
- MSTPCR("jpu0", "bus_clk", 2, 6, CLK_ENABLE_ON_INIT),
- MSTPCR("beu0", "bus_clk", 2, 4, 0),
- MSTPCR("ceu0", "bus_clk", 2, 3, 0),
- MSTPCR("veu0", "bus_clk", 2, 2, CLK_ENABLE_ON_INIT),
- MSTPCR("vpu0", "bus_clk", 2, 1, CLK_ENABLE_ON_INIT),
- MSTPCR("lcdc0", "bus_clk", 2, 0, 0),
-#endif
-};
-
-static struct clk *sh7722_clocks[] = {
- &sh7722_umem_clock,
- &sh7722_sh_clock,
- &sh7722_peripheral_clock,
- &sh7722_sdram_clock,
- &sh7722_siu_a_clock,
- &sh7722_siu_b_clock,
-#if defined(CONFIG_CPU_SUBTYPE_SH7722)
- &sh7722_irda_clock,
-#endif
- &sh7722_video_clock,
-};
-
-/*
- * init in order: master, module, bus, cpu
- */
-struct clk_ops *onchip_ops[] = {
- &sh7722_master_clk_ops,
- &sh7722_module_clk_ops,
- &sh7722_frqcr_clk_ops,
- &sh7722_frqcr_clk_ops,
+ MSTP("sdhi0", &div4_clks[DIV4_P], MSTPCR2, 18, 0),
+ MSTP("keysc0", &r_clk, MSTPCR2, 14, 0),
+ MSTP("usbf0", &div4_clks[DIV4_P], MSTPCR2, 11, 0),
+ MSTP("2dg0", &div4_clks[DIV4_B], MSTPCR2, 9, 0),
+ MSTP("siu0", &div4_clks[DIV4_B], MSTPCR2, 8, 0),
+ MSTP("vou0", &div4_clks[DIV4_B], MSTPCR2, 5, 0),
+ MSTP("jpu0", &div4_clks[DIV4_B], MSTPCR2, 6, CLK_ENABLE_ON_INIT),
+ MSTP("beu0", &div4_clks[DIV4_B], MSTPCR2, 4, 0),
+ MSTP("ceu0", &div4_clks[DIV4_B], MSTPCR2, 3, 0),
+ MSTP("veu0", &div4_clks[DIV4_B], MSTPCR2, 2, CLK_ENABLE_ON_INIT),
+ MSTP("vpu0", &div4_clks[DIV4_B], MSTPCR2, 1, CLK_ENABLE_ON_INIT),
+ MSTP("lcdc0", &div4_clks[DIV4_B], MSTPCR2, 0, 0),
};
-void __init
-arch_init_clk_ops(struct clk_ops **ops, int type)
-{
- BUG_ON(type < 0 || type >= ARRAY_SIZE(onchip_ops));
- *ops = onchip_ops[type];
-}
-
int __init arch_clk_init(void)
{
- struct clk *clk;
- int i;
+ int k, ret = 0;
- cpg_clk_init();
+ /* autodetect extal or dll configuration */
+ if (__raw_readl(PLLCR) & 0x1000)
+ pll_clk.parent = &dll_clk;
+ else
+ pll_clk.parent = &extal_clk;
- clk = clk_get(NULL, "master_clk");
- for (i = 0; i < ARRAY_SIZE(sh7722_clocks); i++) {
- pr_debug( "Registering clock '%s'\n", sh7722_clocks[i]->name);
- sh7722_clocks[i]->parent = clk;
- clk_register(sh7722_clocks[i]);
- }
- clk_put(clk);
+ for (k = 0; !ret && (k < ARRAY_SIZE(main_clks)); k++)
+ ret = clk_register(main_clks[k]);
- clk_register(&sh7722_r_clock);
+ if (!ret)
+ ret = sh_clk_div4_register(div4_clks, DIV4_NR, &div4_table);
- for (i = 0; i < ARRAY_SIZE(sh7722_mstpcr_clocks); i++) {
- pr_debug( "Registering mstpcr clock '%s'\n",
- sh7722_mstpcr_clocks[i].name);
- clk = clk_get(NULL, (void *) sh7722_mstpcr_clocks[i].ops);
- sh7722_mstpcr_clocks[i].parent = clk;
- sh7722_mstpcr_clocks[i].ops = &sh7722_mstpcr_clk_ops;
- clk_register(&sh7722_mstpcr_clocks[i]);
- clk_put(clk);
- }
+ if (!ret)
+ ret = sh_clk_div6_register(div6_clks, ARRAY_SIZE(div6_clks));
- propagate_rate(&sh7722_r_clock); /* make sure rate gets propagated */
+ if (!ret)
+ ret = sh_clk_mstp32_register(mstp_clks, ARRAY_SIZE(mstp_clks));
- return 0;
+ return ret;
}
Copyright © 1996 – 2023 Jason A. Donenfeld. All Rights Reverse Engineered.