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-rw-r--r--arch/arm/mach-omap2/clock24xx.c805
1 files changed, 0 insertions, 805 deletions
diff --git a/arch/arm/mach-omap2/clock24xx.c b/arch/arm/mach-omap2/clock24xx.c
deleted file mode 100644
index e2dbedd581e8..000000000000
--- a/arch/arm/mach-omap2/clock24xx.c
+++ /dev/null
@@ -1,805 +0,0 @@
-/*
- * linux/arch/arm/mach-omap2/clock.c
- *
- * Copyright (C) 2005-2008 Texas Instruments, Inc.
- * Copyright (C) 2004-2008 Nokia Corporation
- *
- * Contacts:
- * Richard Woodruff <r-woodruff2@ti.com>
- * Paul Walmsley
- *
- * Based on earlier work by Tuukka Tikkanen, Tony Lindgren,
- * Gordon McNutt and RidgeRun, Inc.
- *
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License version 2 as
- * published by the Free Software Foundation.
- */
-#undef DEBUG
-
-#include <linux/module.h>
-#include <linux/kernel.h>
-#include <linux/device.h>
-#include <linux/list.h>
-#include <linux/errno.h>
-#include <linux/delay.h>
-#include <linux/clk.h>
-#include <linux/io.h>
-#include <linux/cpufreq.h>
-#include <linux/bitops.h>
-
-#include <mach/clock.h>
-#include <mach/sram.h>
-#include <mach/prcm.h>
-#include <asm/div64.h>
-#include <asm/clkdev.h>
-
-#include <mach/sdrc.h>
-#include "clock.h"
-#include "prm.h"
-#include "prm-regbits-24xx.h"
-#include "cm.h"
-#include "cm-regbits-24xx.h"
-
-static const struct clkops clkops_oscck;
-static const struct clkops clkops_fixed;
-
-static void omap2430_clk_i2chs_find_idlest(struct clk *clk,
- void __iomem **idlest_reg,
- u8 *idlest_bit);
-
-/* 2430 I2CHS has non-standard IDLEST register */
-static const struct clkops clkops_omap2430_i2chs_wait = {
- .enable = omap2_dflt_clk_enable,
- .disable = omap2_dflt_clk_disable,
- .find_idlest = omap2430_clk_i2chs_find_idlest,
- .find_companion = omap2_clk_dflt_find_companion,
-};
-
-#include "clock24xx.h"
-
-struct omap_clk {
- u32 cpu;
- struct clk_lookup lk;
-};
-
-#define CLK(dev, con, ck, cp) \
- { \
- .cpu = cp, \
- .lk = { \
- .dev_id = dev, \
- .con_id = con, \
- .clk = ck, \
- }, \
- }
-
-#define CK_243X RATE_IN_243X
-#define CK_242X RATE_IN_242X
-
-static struct omap_clk omap24xx_clks[] = {
- /* external root sources */
- CLK(NULL, "func_32k_ck", &func_32k_ck, CK_243X | CK_242X),
- CLK(NULL, "secure_32k_ck", &secure_32k_ck, CK_243X | CK_242X),
- CLK(NULL, "osc_ck", &osc_ck, CK_243X | CK_242X),
- CLK(NULL, "sys_ck", &sys_ck, CK_243X | CK_242X),
- CLK(NULL, "alt_ck", &alt_ck, CK_243X | CK_242X),
- /* internal analog sources */
- CLK(NULL, "dpll_ck", &dpll_ck, CK_243X | CK_242X),
- CLK(NULL, "apll96_ck", &apll96_ck, CK_243X | CK_242X),
- CLK(NULL, "apll54_ck", &apll54_ck, CK_243X | CK_242X),
- /* internal prcm root sources */
- CLK(NULL, "func_54m_ck", &func_54m_ck, CK_243X | CK_242X),
- CLK(NULL, "core_ck", &core_ck, CK_243X | CK_242X),
- CLK(NULL, "func_96m_ck", &func_96m_ck, CK_243X | CK_242X),
- CLK(NULL, "func_48m_ck", &func_48m_ck, CK_243X | CK_242X),
- CLK(NULL, "func_12m_ck", &func_12m_ck, CK_243X | CK_242X),
- CLK(NULL, "ck_wdt1_osc", &wdt1_osc_ck, CK_243X | CK_242X),
- CLK(NULL, "sys_clkout_src", &sys_clkout_src, CK_243X | CK_242X),
- CLK(NULL, "sys_clkout", &sys_clkout, CK_243X | CK_242X),
- CLK(NULL, "sys_clkout2_src", &sys_clkout2_src, CK_242X),
- CLK(NULL, "sys_clkout2", &sys_clkout2, CK_242X),
- CLK(NULL, "emul_ck", &emul_ck, CK_242X),
- /* mpu domain clocks */
- CLK(NULL, "mpu_ck", &mpu_ck, CK_243X | CK_242X),
- /* dsp domain clocks */
- CLK(NULL, "dsp_fck", &dsp_fck, CK_243X | CK_242X),
- CLK(NULL, "dsp_irate_ick", &dsp_irate_ick, CK_243X | CK_242X),
- CLK(NULL, "dsp_ick", &dsp_ick, CK_242X),
- CLK(NULL, "iva2_1_ick", &iva2_1_ick, CK_243X),
- CLK(NULL, "iva1_ifck", &iva1_ifck, CK_242X),
- CLK(NULL, "iva1_mpu_int_ifck", &iva1_mpu_int_ifck, CK_242X),
- /* GFX domain clocks */
- CLK(NULL, "gfx_3d_fck", &gfx_3d_fck, CK_243X | CK_242X),
- CLK(NULL, "gfx_2d_fck", &gfx_2d_fck, CK_243X | CK_242X),
- CLK(NULL, "gfx_ick", &gfx_ick, CK_243X | CK_242X),
- /* Modem domain clocks */
- CLK(NULL, "mdm_ick", &mdm_ick, CK_243X),
- CLK(NULL, "mdm_osc_ck", &mdm_osc_ck, CK_243X),
- /* DSS domain clocks */
- CLK("omapfb", "ick", &dss_ick, CK_243X | CK_242X),
- CLK("omapfb", "dss1_fck", &dss1_fck, CK_243X | CK_242X),
- CLK("omapfb", "dss2_fck", &dss2_fck, CK_243X | CK_242X),
- CLK("omapfb", "tv_fck", &dss_54m_fck, CK_243X | CK_242X),
- /* L3 domain clocks */
- CLK(NULL, "core_l3_ck", &core_l3_ck, CK_243X | CK_242X),
- CLK(NULL, "ssi_fck", &ssi_ssr_sst_fck, CK_243X | CK_242X),
- CLK(NULL, "usb_l4_ick", &usb_l4_ick, CK_243X | CK_242X),
- /* L4 domain clocks */
- CLK(NULL, "l4_ck", &l4_ck, CK_243X | CK_242X),
- CLK(NULL, "ssi_l4_ick", &ssi_l4_ick, CK_243X | CK_242X),
- /* virtual meta-group clock */
- CLK(NULL, "virt_prcm_set", &virt_prcm_set, CK_243X | CK_242X),
- /* general l4 interface ck, multi-parent functional clk */
- CLK(NULL, "gpt1_ick", &gpt1_ick, CK_243X | CK_242X),
- CLK(NULL, "gpt1_fck", &gpt1_fck, CK_243X | CK_242X),
- CLK(NULL, "gpt2_ick", &gpt2_ick, CK_243X | CK_242X),
- CLK(NULL, "gpt2_fck", &gpt2_fck, CK_243X | CK_242X),
- CLK(NULL, "gpt3_ick", &gpt3_ick, CK_243X | CK_242X),
- CLK(NULL, "gpt3_fck", &gpt3_fck, CK_243X | CK_242X),
- CLK(NULL, "gpt4_ick", &gpt4_ick, CK_243X | CK_242X),
- CLK(NULL, "gpt4_fck", &gpt4_fck, CK_243X | CK_242X),
- CLK(NULL, "gpt5_ick", &gpt5_ick, CK_243X | CK_242X),
- CLK(NULL, "gpt5_fck", &gpt5_fck, CK_243X | CK_242X),
- CLK(NULL, "gpt6_ick", &gpt6_ick, CK_243X | CK_242X),
- CLK(NULL, "gpt6_fck", &gpt6_fck, CK_243X | CK_242X),
- CLK(NULL, "gpt7_ick", &gpt7_ick, CK_243X | CK_242X),
- CLK(NULL, "gpt7_fck", &gpt7_fck, CK_243X | CK_242X),
- CLK(NULL, "gpt8_ick", &gpt8_ick, CK_243X | CK_242X),
- CLK(NULL, "gpt8_fck", &gpt8_fck, CK_243X | CK_242X),
- CLK(NULL, "gpt9_ick", &gpt9_ick, CK_243X | CK_242X),
- CLK(NULL, "gpt9_fck", &gpt9_fck, CK_243X | CK_242X),
- CLK(NULL, "gpt10_ick", &gpt10_ick, CK_243X | CK_242X),
- CLK(NULL, "gpt10_fck", &gpt10_fck, CK_243X | CK_242X),
- CLK(NULL, "gpt11_ick", &gpt11_ick, CK_243X | CK_242X),
- CLK(NULL, "gpt11_fck", &gpt11_fck, CK_243X | CK_242X),
- CLK(NULL, "gpt12_ick", &gpt12_ick, CK_243X | CK_242X),
- CLK(NULL, "gpt12_fck", &gpt12_fck, CK_243X | CK_242X),
- CLK("omap-mcbsp.1", "ick", &mcbsp1_ick, CK_243X | CK_242X),
- CLK("omap-mcbsp.1", "fck", &mcbsp1_fck, CK_243X | CK_242X),
- CLK("omap-mcbsp.2", "ick", &mcbsp2_ick, CK_243X | CK_242X),
- CLK("omap-mcbsp.2", "fck", &mcbsp2_fck, CK_243X | CK_242X),
- CLK("omap-mcbsp.3", "ick", &mcbsp3_ick, CK_243X),
- CLK("omap-mcbsp.3", "fck", &mcbsp3_fck, CK_243X),
- CLK("omap-mcbsp.4", "ick", &mcbsp4_ick, CK_243X),
- CLK("omap-mcbsp.4", "fck", &mcbsp4_fck, CK_243X),
- CLK("omap-mcbsp.5", "ick", &mcbsp5_ick, CK_243X),
- CLK("omap-mcbsp.5", "fck", &mcbsp5_fck, CK_243X),
- CLK("omap2_mcspi.1", "ick", &mcspi1_ick, CK_243X | CK_242X),
- CLK("omap2_mcspi.1", "fck", &mcspi1_fck, CK_243X | CK_242X),
- CLK("omap2_mcspi.2", "ick", &mcspi2_ick, CK_243X | CK_242X),
- CLK("omap2_mcspi.2", "fck", &mcspi2_fck, CK_243X | CK_242X),
- CLK("omap2_mcspi.3", "ick", &mcspi3_ick, CK_243X),
- CLK("omap2_mcspi.3", "fck", &mcspi3_fck, CK_243X),
- CLK(NULL, "uart1_ick", &uart1_ick, CK_243X | CK_242X),
- CLK(NULL, "uart1_fck", &uart1_fck, CK_243X | CK_242X),
- CLK(NULL, "uart2_ick", &uart2_ick, CK_243X | CK_242X),
- CLK(NULL, "uart2_fck", &uart2_fck, CK_243X | CK_242X),
- CLK(NULL, "uart3_ick", &uart3_ick, CK_243X | CK_242X),
- CLK(NULL, "uart3_fck", &uart3_fck, CK_243X | CK_242X),
- CLK(NULL, "gpios_ick", &gpios_ick, CK_243X | CK_242X),
- CLK(NULL, "gpios_fck", &gpios_fck, CK_243X | CK_242X),
- CLK("omap_wdt", "ick", &mpu_wdt_ick, CK_243X | CK_242X),
- CLK("omap_wdt", "fck", &mpu_wdt_fck, CK_243X | CK_242X),
- CLK(NULL, "sync_32k_ick", &sync_32k_ick, CK_243X | CK_242X),
- CLK(NULL, "wdt1_ick", &wdt1_ick, CK_243X | CK_242X),
- CLK(NULL, "omapctrl_ick", &omapctrl_ick, CK_243X | CK_242X),
- CLK(NULL, "icr_ick", &icr_ick, CK_243X),
- CLK("omap24xxcam", "fck", &cam_fck, CK_243X | CK_242X),
- CLK("omap24xxcam", "ick", &cam_ick, CK_243X | CK_242X),
- CLK(NULL, "mailboxes_ick", &mailboxes_ick, CK_243X | CK_242X),
- CLK(NULL, "wdt4_ick", &wdt4_ick, CK_243X | CK_242X),
- CLK(NULL, "wdt4_fck", &wdt4_fck, CK_243X | CK_242X),
- CLK(NULL, "wdt3_ick", &wdt3_ick, CK_242X),
- CLK(NULL, "wdt3_fck", &wdt3_fck, CK_242X),
- CLK(NULL, "mspro_ick", &mspro_ick, CK_243X | CK_242X),
- CLK(NULL, "mspro_fck", &mspro_fck, CK_243X | CK_242X),
- CLK("mmci-omap.0", "ick", &mmc_ick, CK_242X),
- CLK("mmci-omap.0", "fck", &mmc_fck, CK_242X),
- CLK(NULL, "fac_ick", &fac_ick, CK_243X | CK_242X),
- CLK(NULL, "fac_fck", &fac_fck, CK_243X | CK_242X),
- CLK(NULL, "eac_ick", &eac_ick, CK_242X),
- CLK(NULL, "eac_fck", &eac_fck, CK_242X),
- CLK("omap_hdq.0", "ick", &hdq_ick, CK_243X | CK_242X),
- CLK("omap_hdq.1", "fck", &hdq_fck, CK_243X | CK_242X),
- CLK("i2c_omap.1", "ick", &i2c1_ick, CK_243X | CK_242X),
- CLK("i2c_omap.1", "fck", &i2c1_fck, CK_242X),
- CLK("i2c_omap.1", "fck", &i2chs1_fck, CK_243X),
- CLK("i2c_omap.2", "ick", &i2c2_ick, CK_243X | CK_242X),
- CLK("i2c_omap.2", "fck", &i2c2_fck, CK_242X),
- CLK("i2c_omap.2", "fck", &i2chs2_fck, CK_243X),
- CLK(NULL, "gpmc_fck", &gpmc_fck, CK_243X | CK_242X),
- CLK(NULL, "sdma_fck", &sdma_fck, CK_243X | CK_242X),
- CLK(NULL, "sdma_ick", &sdma_ick, CK_243X | CK_242X),
- CLK(NULL, "vlynq_ick", &vlynq_ick, CK_242X),
- CLK(NULL, "vlynq_fck", &vlynq_fck, CK_242X),
- CLK(NULL, "sdrc_ick", &sdrc_ick, CK_243X),
- CLK(NULL, "des_ick", &des_ick, CK_243X | CK_242X),
- CLK(NULL, "sha_ick", &sha_ick, CK_243X | CK_242X),
- CLK("omap_rng", "ick", &rng_ick, CK_243X | CK_242X),
- CLK(NULL, "aes_ick", &aes_ick, CK_243X | CK_242X),
- CLK(NULL, "pka_ick", &pka_ick, CK_243X | CK_242X),
- CLK(NULL, "usb_fck", &usb_fck, CK_243X | CK_242X),
- CLK("musb_hdrc", "ick", &usbhs_ick, CK_243X),
- CLK("mmci-omap-hs.0", "ick", &mmchs1_ick, CK_243X),
- CLK("mmci-omap-hs.0", "fck", &mmchs1_fck, CK_243X),
- CLK("mmci-omap-hs.1", "ick", &mmchs2_ick, CK_243X),
- CLK("mmci-omap-hs.1", "fck", &mmchs2_fck, CK_243X),
- CLK(NULL, "gpio5_ick", &gpio5_ick, CK_243X),
- CLK(NULL, "gpio5_fck", &gpio5_fck, CK_243X),
- CLK(NULL, "mdm_intc_ick", &mdm_intc_ick, CK_243X),
- CLK("mmci-omap-hs.0", "mmchsdb_fck", &mmchsdb1_fck, CK_243X),
- CLK("mmci-omap-hs.1", "mmchsdb_fck", &mmchsdb2_fck, CK_243X),
-};
-
-/* CM_CLKEN_PLL.EN_{54,96}M_PLL options (24XX) */
-#define EN_APLL_STOPPED 0
-#define EN_APLL_LOCKED 3
-
-/* CM_CLKSEL1_PLL.APLLS_CLKIN options (24XX) */
-#define APLLS_CLKIN_19_2MHZ 0
-#define APLLS_CLKIN_13MHZ 2
-#define APLLS_CLKIN_12MHZ 3
-
-/* #define DOWN_VARIABLE_DPLL 1 */ /* Experimental */
-
-static struct prcm_config *curr_prcm_set;
-static struct clk *vclk;
-static struct clk *sclk;
-
-static void __iomem *prcm_clksrc_ctrl;
-
-/*-------------------------------------------------------------------------
- * Omap24xx specific clock functions
- *-------------------------------------------------------------------------*/
-
-/**
- * omap2430_clk_i2chs_find_idlest - return CM_IDLEST info for 2430 I2CHS
- * @clk: struct clk * being enabled
- * @idlest_reg: void __iomem ** to store CM_IDLEST reg address into
- * @idlest_bit: pointer to a u8 to store the CM_IDLEST bit shift into
- *
- * OMAP2430 I2CHS CM_IDLEST bits are in CM_IDLEST1_CORE, but the
- * CM_*CLKEN bits are in CM_{I,F}CLKEN2_CORE. This custom function
- * passes back the correct CM_IDLEST register address for I2CHS
- * modules. No return value.
- */
-static void omap2430_clk_i2chs_find_idlest(struct clk *clk,
- void __iomem **idlest_reg,
- u8 *idlest_bit)
-{
- *idlest_reg = OMAP_CM_REGADDR(CORE_MOD, CM_IDLEST);
- *idlest_bit = clk->enable_bit;
-}
-
-
-/**
- * omap2xxx_clk_get_core_rate - return the CORE_CLK rate
- * @clk: pointer to the combined dpll_ck + core_ck (currently "dpll_ck")
- *
- * Returns the CORE_CLK rate. CORE_CLK can have one of three rate
- * sources on OMAP2xxx: the DPLL CLKOUT rate, DPLL CLKOUTX2, or 32KHz
- * (the latter is unusual). This currently should be called with
- * struct clk *dpll_ck, which is a composite clock of dpll_ck and
- * core_ck.
- */
-static unsigned long omap2xxx_clk_get_core_rate(struct clk *clk)
-{
- long long core_clk;
- u32 v;
-
- core_clk = omap2_get_dpll_rate(clk);
-
- v = cm_read_mod_reg(PLL_MOD, CM_CLKSEL2);
- v &= OMAP24XX_CORE_CLK_SRC_MASK;
-
- if (v == CORE_CLK_SRC_32K)
- core_clk = 32768;
- else
- core_clk *= v;
-
- return core_clk;
-}
-
-static int omap2_enable_osc_ck(struct clk *clk)
-{
- u32 pcc;
-
- pcc = __raw_readl(prcm_clksrc_ctrl);
-
- __raw_writel(pcc & ~OMAP_AUTOEXTCLKMODE_MASK, prcm_clksrc_ctrl);
-
- return 0;
-}
-
-static void omap2_disable_osc_ck(struct clk *clk)
-{
- u32 pcc;
-
- pcc = __raw_readl(prcm_clksrc_ctrl);
-
- __raw_writel(pcc | OMAP_AUTOEXTCLKMODE_MASK, prcm_clksrc_ctrl);
-}
-
-static const struct clkops clkops_oscck = {
- .enable = &omap2_enable_osc_ck,
- .disable = &omap2_disable_osc_ck,
-};
-
-#ifdef OLD_CK
-/* Recalculate SYST_CLK */
-static void omap2_sys_clk_recalc(struct clk * clk)
-{
- u32 div = PRCM_CLKSRC_CTRL;
- div &= (1 << 7) | (1 << 6); /* Test if ext clk divided by 1 or 2 */
- div >>= clk->rate_offset;
- clk->rate = (clk->parent->rate / div);
- propagate_rate(clk);
-}
-#endif /* OLD_CK */
-
-/* Enable an APLL if off */
-static int omap2_clk_fixed_enable(struct clk *clk)
-{
- u32 cval, apll_mask;
-
- apll_mask = EN_APLL_LOCKED << clk->enable_bit;
-
- cval = cm_read_mod_reg(PLL_MOD, CM_CLKEN);
-
- if ((cval & apll_mask) == apll_mask)
- return 0; /* apll already enabled */
-
- cval &= ~apll_mask;
- cval |= apll_mask;
- cm_write_mod_reg(cval, PLL_MOD, CM_CLKEN);
-
- if (clk == &apll96_ck)
- cval = OMAP24XX_ST_96M_APLL;
- else if (clk == &apll54_ck)
- cval = OMAP24XX_ST_54M_APLL;
-
- omap2_cm_wait_idlest(OMAP_CM_REGADDR(PLL_MOD, CM_IDLEST), cval,
- clk->name);
-
- /*
- * REVISIT: Should we return an error code if omap2_wait_clock_ready()
- * fails?
- */
- return 0;
-}
-
-/* Stop APLL */
-static void omap2_clk_fixed_disable(struct clk *clk)
-{
- u32 cval;
-
- cval = cm_read_mod_reg(PLL_MOD, CM_CLKEN);
- cval &= ~(EN_APLL_LOCKED << clk->enable_bit);
- cm_write_mod_reg(cval, PLL_MOD, CM_CLKEN);
-}
-
-static const struct clkops clkops_fixed = {
- .enable = &omap2_clk_fixed_enable,
- .disable = &omap2_clk_fixed_disable,
-};
-
-/*
- * Uses the current prcm set to tell if a rate is valid.
- * You can go slower, but not faster within a given rate set.
- */
-static long omap2_dpllcore_round_rate(unsigned long target_rate)
-{
- u32 high, low, core_clk_src;
-
- core_clk_src = cm_read_mod_reg(PLL_MOD, CM_CLKSEL2);
- core_clk_src &= OMAP24XX_CORE_CLK_SRC_MASK;
-
- if (core_clk_src == CORE_CLK_SRC_DPLL) { /* DPLL clockout */
- high = curr_prcm_set->dpll_speed * 2;
- low = curr_prcm_set->dpll_speed;
- } else { /* DPLL clockout x 2 */
- high = curr_prcm_set->dpll_speed;
- low = curr_prcm_set->dpll_speed / 2;
- }
-
-#ifdef DOWN_VARIABLE_DPLL
- if (target_rate > high)
- return high;
- else
- return target_rate;
-#else
- if (target_rate > low)
- return high;
- else
- return low;
-#endif
-
-}
-
-static unsigned long omap2_dpllcore_recalc(struct clk *clk)
-{
- return omap2xxx_clk_get_core_rate(clk);
-}
-
-static int omap2_reprogram_dpllcore(struct clk *clk, unsigned long rate)
-{
- u32 cur_rate, low, mult, div, valid_rate, done_rate;
- u32 bypass = 0;
- struct prcm_config tmpset;
- const struct dpll_data *dd;
-
- cur_rate = omap2xxx_clk_get_core_rate(&dpll_ck);
- mult = cm_read_mod_reg(PLL_MOD, CM_CLKSEL2);
- mult &= OMAP24XX_CORE_CLK_SRC_MASK;
-
- if ((rate == (cur_rate / 2)) && (mult == 2)) {
- omap2xxx_sdrc_reprogram(CORE_CLK_SRC_DPLL, 1);
- } else if ((rate == (cur_rate * 2)) && (mult == 1)) {
- omap2xxx_sdrc_reprogram(CORE_CLK_SRC_DPLL_X2, 1);
- } else if (rate != cur_rate) {
- valid_rate = omap2_dpllcore_round_rate(rate);
- if (valid_rate != rate)
- return -EINVAL;
-
- if (mult == 1)
- low = curr_prcm_set->dpll_speed;
- else
- low = curr_prcm_set->dpll_speed / 2;
-
- dd = clk->dpll_data;
- if (!dd)
- return -EINVAL;
-
- tmpset.cm_clksel1_pll = __raw_readl(dd->mult_div1_reg);
- tmpset.cm_clksel1_pll &= ~(dd->mult_mask |
- dd->div1_mask);
- div = ((curr_prcm_set->xtal_speed / 1000000) - 1);
- tmpset.cm_clksel2_pll = cm_read_mod_reg(PLL_MOD, CM_CLKSEL2);
- tmpset.cm_clksel2_pll &= ~OMAP24XX_CORE_CLK_SRC_MASK;
- if (rate > low) {
- tmpset.cm_clksel2_pll |= CORE_CLK_SRC_DPLL_X2;
- mult = ((rate / 2) / 1000000);
- done_rate = CORE_CLK_SRC_DPLL_X2;
- } else {
- tmpset.cm_clksel2_pll |= CORE_CLK_SRC_DPLL;
- mult = (rate / 1000000);
- done_rate = CORE_CLK_SRC_DPLL;
- }
- tmpset.cm_clksel1_pll |= (div << __ffs(dd->mult_mask));
- tmpset.cm_clksel1_pll |= (mult << __ffs(dd->div1_mask));
-
- /* Worst case */
- tmpset.base_sdrc_rfr = SDRC_RFR_CTRL_BYPASS;
-
- if (rate == curr_prcm_set->xtal_speed) /* If asking for 1-1 */
- bypass = 1;
-
- /* For omap2xxx_sdrc_init_params() */
- omap2xxx_sdrc_reprogram(CORE_CLK_SRC_DPLL_X2, 1);
-
- /* Force dll lock mode */
- omap2_set_prcm(tmpset.cm_clksel1_pll, tmpset.base_sdrc_rfr,
- bypass);
-
- /* Errata: ret dll entry state */
- omap2xxx_sdrc_init_params(omap2xxx_sdrc_dll_is_unlocked());
- omap2xxx_sdrc_reprogram(done_rate, 0);
- }
-
- return 0;
-}
-
-/**
- * omap2_table_mpu_recalc - just return the MPU speed
- * @clk: virt_prcm_set struct clk
- *
- * Set virt_prcm_set's rate to the mpu_speed field of the current PRCM set.
- */
-static unsigned long omap2_table_mpu_recalc(struct clk *clk)
-{
- return curr_prcm_set->mpu_speed;
-}
-
-/*
- * Look for a rate equal or less than the target rate given a configuration set.
- *
- * What's not entirely clear is "which" field represents the key field.
- * Some might argue L3-DDR, others ARM, others IVA. This code is simple and
- * just uses the ARM rates.
- */
-static long omap2_round_to_table_rate(struct clk *clk, unsigned long rate)
-{
- struct prcm_config *ptr;
- long highest_rate;
-
- if (clk != &virt_prcm_set)
- return -EINVAL;
-
- highest_rate = -EINVAL;
-
- for (ptr = rate_table; ptr->mpu_speed; ptr++) {
- if (!(ptr->flags & cpu_mask))
- continue;
- if (ptr->xtal_speed != sys_ck.rate)
- continue;
-
- highest_rate = ptr->mpu_speed;
-
- /* Can check only after xtal frequency check */
- if (ptr->mpu_speed <= rate)
- break;
- }
- return highest_rate;
-}
-
-/* Sets basic clocks based on the specified rate */
-static int omap2_select_table_rate(struct clk *clk, unsigned long rate)
-{
- u32 cur_rate, done_rate, bypass = 0, tmp;
- struct prcm_config *prcm;
- unsigned long found_speed = 0;
- unsigned long flags;
-
- if (clk != &virt_prcm_set)
- return -EINVAL;
-
- for (prcm = rate_table; prcm->mpu_speed; prcm++) {
- if (!(prcm->flags & cpu_mask))
- continue;
-
- if (prcm->xtal_speed != sys_ck.rate)
- continue;
-
- if (prcm->mpu_speed <= rate) {
- found_speed = prcm->mpu_speed;
- break;
- }
- }
-
- if (!found_speed) {
- printk(KERN_INFO "Could not set MPU rate to %luMHz\n",
- rate / 1000000);
- return -EINVAL;
- }
-
- curr_prcm_set = prcm;
- cur_rate = omap2xxx_clk_get_core_rate(&dpll_ck);
-
- if (prcm->dpll_speed == cur_rate / 2) {
- omap2xxx_sdrc_reprogram(CORE_CLK_SRC_DPLL, 1);
- } else if (prcm->dpll_speed == cur_rate * 2) {
- omap2xxx_sdrc_reprogram(CORE_CLK_SRC_DPLL_X2, 1);
- } else if (prcm->dpll_speed != cur_rate) {
- local_irq_save(flags);
-
- if (prcm->dpll_speed == prcm->xtal_speed)
- bypass = 1;
-
- if ((prcm->cm_clksel2_pll & OMAP24XX_CORE_CLK_SRC_MASK) ==
- CORE_CLK_SRC_DPLL_X2)
- done_rate = CORE_CLK_SRC_DPLL_X2;
- else
- done_rate = CORE_CLK_SRC_DPLL;
-
- /* MPU divider */
- cm_write_mod_reg(prcm->cm_clksel_mpu, MPU_MOD, CM_CLKSEL);
-
- /* dsp + iva1 div(2420), iva2.1(2430) */
- cm_write_mod_reg(prcm->cm_clksel_dsp,
- OMAP24XX_DSP_MOD, CM_CLKSEL);
-
- cm_write_mod_reg(prcm->cm_clksel_gfx, GFX_MOD, CM_CLKSEL);
-
- /* Major subsystem dividers */
- tmp = cm_read_mod_reg(CORE_MOD, CM_CLKSEL1) & OMAP24XX_CLKSEL_DSS2_MASK;
- cm_write_mod_reg(prcm->cm_clksel1_core | tmp, CORE_MOD,
- CM_CLKSEL1);
-
- if (cpu_is_omap2430())
- cm_write_mod_reg(prcm->cm_clksel_mdm,
- OMAP2430_MDM_MOD, CM_CLKSEL);
-
- /* x2 to enter omap2xxx_sdrc_init_params() */
- omap2xxx_sdrc_reprogram(CORE_CLK_SRC_DPLL_X2, 1);
-
- omap2_set_prcm(prcm->cm_clksel1_pll, prcm->base_sdrc_rfr,
- bypass);
-
- omap2xxx_sdrc_init_params(omap2xxx_sdrc_dll_is_unlocked());
- omap2xxx_sdrc_reprogram(done_rate, 0);
-
- local_irq_restore(flags);
- }
-
- return 0;
-}
-
-#ifdef CONFIG_CPU_FREQ
-/*
- * Walk PRCM rate table and fillout cpufreq freq_table
- */
-static struct cpufreq_frequency_table freq_table[ARRAY_SIZE(rate_table)];
-
-void omap2_clk_init_cpufreq_table(struct cpufreq_frequency_table **table)
-{
- struct prcm_config *prcm;
- int i = 0;
-
- for (prcm = rate_table; prcm->mpu_speed; prcm++) {
- if (!(prcm->flags & cpu_mask))
- continue;
- if (prcm->xtal_speed != sys_ck.rate)
- continue;
-
- /* don't put bypass rates in table */
- if (prcm->dpll_speed == prcm->xtal_speed)
- continue;
-
- freq_table[i].index = i;
- freq_table[i].frequency = prcm->mpu_speed / 1000;
- i++;
- }
-
- if (i == 0) {
- printk(KERN_WARNING "%s: failed to initialize frequency "
- "table\n", __func__);
- return;
- }
-
- freq_table[i].index = i;
- freq_table[i].frequency = CPUFREQ_TABLE_END;
-
- *table = &freq_table[0];
-}
-#endif
-
-static struct clk_functions omap2_clk_functions = {
- .clk_enable = omap2_clk_enable,
- .clk_disable = omap2_clk_disable,
- .clk_round_rate = omap2_clk_round_rate,
- .clk_set_rate = omap2_clk_set_rate,
- .clk_set_parent = omap2_clk_set_parent,
- .clk_disable_unused = omap2_clk_disable_unused,
-#ifdef CONFIG_CPU_FREQ
- .clk_init_cpufreq_table = omap2_clk_init_cpufreq_table,
-#endif
-};
-
-static u32 omap2_get_apll_clkin(void)
-{
- u32 aplls, srate = 0;
-
- aplls = cm_read_mod_reg(PLL_MOD, CM_CLKSEL1);
- aplls &= OMAP24XX_APLLS_CLKIN_MASK;
- aplls >>= OMAP24XX_APLLS_CLKIN_SHIFT;
-
- if (aplls == APLLS_CLKIN_19_2MHZ)
- srate = 19200000;
- else if (aplls == APLLS_CLKIN_13MHZ)
- srate = 13000000;
- else if (aplls == APLLS_CLKIN_12MHZ)
- srate = 12000000;
-
- return srate;
-}
-
-static u32 omap2_get_sysclkdiv(void)
-{
- u32 div;
-
- div = __raw_readl(prcm_clksrc_ctrl);
- div &= OMAP_SYSCLKDIV_MASK;
- div >>= OMAP_SYSCLKDIV_SHIFT;
-
- return div;
-}
-
-static unsigned long omap2_osc_clk_recalc(struct clk *clk)
-{
- return omap2_get_apll_clkin() * omap2_get_sysclkdiv();
-}
-
-static unsigned long omap2_sys_clk_recalc(struct clk *clk)
-{
- return clk->parent->rate / omap2_get_sysclkdiv();
-}
-
-/*
- * Set clocks for bypass mode for reboot to work.
- */
-void omap2_clk_prepare_for_reboot(void)
-{
- u32 rate;
-
- if (vclk == NULL || sclk == NULL)
- return;
-
- rate = clk_get_rate(sclk);
- clk_set_rate(vclk, rate);
-}
-
-/*
- * Switch the MPU rate if specified on cmdline.
- * We cannot do this early until cmdline is parsed.
- */
-static int __init omap2_clk_arch_init(void)
-{
- if (!mpurate)
- return -EINVAL;
-
- if (clk_set_rate(&virt_prcm_set, mpurate))
- printk(KERN_ERR "Could not find matching MPU rate\n");
-
- recalculate_root_clocks();
-
- printk(KERN_INFO "Switched to new clocking rate (Crystal/DPLL/MPU): "
- "%ld.%01ld/%ld/%ld MHz\n",
- (sys_ck.rate / 1000000), (sys_ck.rate / 100000) % 10,
- (dpll_ck.rate / 1000000), (mpu_ck.rate / 1000000)) ;
-
- return 0;
-}
-arch_initcall(omap2_clk_arch_init);
-
-int __init omap2_clk_init(void)
-{
- struct prcm_config *prcm;
- struct omap_clk *c;
- u32 clkrate;
-
- if (cpu_is_omap242x()) {
- prcm_clksrc_ctrl = OMAP2420_PRCM_CLKSRC_CTRL;
- cpu_mask = RATE_IN_242X;
- } else if (cpu_is_omap2430()) {
- prcm_clksrc_ctrl = OMAP2430_PRCM_CLKSRC_CTRL;
- cpu_mask = RATE_IN_243X;
- }
-
- clk_init(&omap2_clk_functions);
-
- for (c = omap24xx_clks; c < omap24xx_clks + ARRAY_SIZE(omap24xx_clks); c++)
- clk_preinit(c->lk.clk);
-
- osc_ck.rate = omap2_osc_clk_recalc(&osc_ck);
- propagate_rate(&osc_ck);
- sys_ck.rate = omap2_sys_clk_recalc(&sys_ck);
- propagate_rate(&sys_ck);
-
- for (c = omap24xx_clks; c < omap24xx_clks + ARRAY_SIZE(omap24xx_clks); c++)
- if (c->cpu & cpu_mask) {
- clkdev_add(&c->lk);
- clk_register(c->lk.clk);
- omap2_init_clk_clkdm(c->lk.clk);
- }
-
- /* Check the MPU rate set by bootloader */
- clkrate = omap2xxx_clk_get_core_rate(&dpll_ck);
- for (prcm = rate_table; prcm->mpu_speed; prcm++) {
- if (!(prcm->flags & cpu_mask))
- continue;
- if (prcm->xtal_speed != sys_ck.rate)
- continue;
- if (prcm->dpll_speed <= clkrate)
- break;
- }
- curr_prcm_set = prcm;
-
- recalculate_root_clocks();
-
- printk(KERN_INFO "Clocking rate (Crystal/DPLL/MPU): "
- "%ld.%01ld/%ld/%ld MHz\n",
- (sys_ck.rate / 1000000), (sys_ck.rate / 100000) % 10,
- (dpll_ck.rate / 1000000), (mpu_ck.rate / 1000000)) ;
-
- /*
- * Only enable those clocks we will need, let the drivers
- * enable other clocks as necessary
- */
- clk_enable_init_clocks();
-
- /* Avoid sleeping sleeping during omap2_clk_prepare_for_reboot() */
- vclk = clk_get(NULL, "virt_prcm_set");
- sclk = clk_get(NULL, "sys_ck");
-
- return 0;
-}