diff options
Diffstat (limited to 'arch/arm/mach-omap2/clock34xx.c')
| -rw-r--r-- | arch/arm/mach-omap2/clock34xx.c | 582 |
1 files changed, 526 insertions, 56 deletions
diff --git a/arch/arm/mach-omap2/clock34xx.c b/arch/arm/mach-omap2/clock34xx.c index 31bb7010bd4..0a14dca31e3 100644 --- a/arch/arm/mach-omap2/clock34xx.c +++ b/arch/arm/mach-omap2/clock34xx.c @@ -30,15 +30,251 @@ #include <mach/clock.h> #include <mach/sram.h> #include <asm/div64.h> +#include <asm/clkdev.h> -#include "memory.h" +#include <mach/sdrc.h> #include "clock.h" -#include "clock34xx.h" #include "prm.h" #include "prm-regbits-34xx.h" #include "cm.h" #include "cm-regbits-34xx.h" +static const struct clkops clkops_noncore_dpll_ops; + +#include "clock34xx.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_343X (1 << 0) +#define CK_3430ES1 (1 << 1) +#define CK_3430ES2 (1 << 2) + +static struct omap_clk omap34xx_clks[] = { + CLK(NULL, "omap_32k_fck", &omap_32k_fck, CK_343X), + CLK(NULL, "virt_12m_ck", &virt_12m_ck, CK_343X), + CLK(NULL, "virt_13m_ck", &virt_13m_ck, CK_343X), + CLK(NULL, "virt_16_8m_ck", &virt_16_8m_ck, CK_3430ES2), + CLK(NULL, "virt_19_2m_ck", &virt_19_2m_ck, CK_343X), + CLK(NULL, "virt_26m_ck", &virt_26m_ck, CK_343X), + CLK(NULL, "virt_38_4m_ck", &virt_38_4m_ck, CK_343X), + CLK(NULL, "osc_sys_ck", &osc_sys_ck, CK_343X), + CLK(NULL, "sys_ck", &sys_ck, CK_343X), + CLK(NULL, "sys_altclk", &sys_altclk, CK_343X), + CLK(NULL, "mcbsp_clks", &mcbsp_clks, CK_343X), + CLK(NULL, "sys_clkout1", &sys_clkout1, CK_343X), + CLK(NULL, "dpll1_ck", &dpll1_ck, CK_343X), + CLK(NULL, "dpll1_x2_ck", &dpll1_x2_ck, CK_343X), + CLK(NULL, "dpll1_x2m2_ck", &dpll1_x2m2_ck, CK_343X), + CLK(NULL, "dpll2_ck", &dpll2_ck, CK_343X), + CLK(NULL, "dpll2_m2_ck", &dpll2_m2_ck, CK_343X), + CLK(NULL, "dpll3_ck", &dpll3_ck, CK_343X), + CLK(NULL, "core_ck", &core_ck, CK_343X), + CLK(NULL, "dpll3_x2_ck", &dpll3_x2_ck, CK_343X), + CLK(NULL, "dpll3_m2_ck", &dpll3_m2_ck, CK_343X), + CLK(NULL, "dpll3_m2x2_ck", &dpll3_m2x2_ck, CK_343X), + CLK(NULL, "dpll3_m3_ck", &dpll3_m3_ck, CK_343X), + CLK(NULL, "dpll3_m3x2_ck", &dpll3_m3x2_ck, CK_343X), + CLK(NULL, "emu_core_alwon_ck", &emu_core_alwon_ck, CK_343X), + CLK(NULL, "dpll4_ck", &dpll4_ck, CK_343X), + CLK(NULL, "dpll4_x2_ck", &dpll4_x2_ck, CK_343X), + CLK(NULL, "omap_96m_alwon_fck", &omap_96m_alwon_fck, CK_343X), + CLK(NULL, "omap_96m_fck", &omap_96m_fck, CK_343X), + CLK(NULL, "cm_96m_fck", &cm_96m_fck, CK_343X), + CLK(NULL, "omap_54m_fck", &omap_54m_fck, CK_343X), + CLK(NULL, "omap_48m_fck", &omap_48m_fck, CK_343X), + CLK(NULL, "omap_12m_fck", &omap_12m_fck, CK_343X), + CLK(NULL, "dpll4_m2_ck", &dpll4_m2_ck, CK_343X), + CLK(NULL, "dpll4_m2x2_ck", &dpll4_m2x2_ck, CK_343X), + CLK(NULL, "dpll4_m3_ck", &dpll4_m3_ck, CK_343X), + CLK(NULL, "dpll4_m3x2_ck", &dpll4_m3x2_ck, CK_343X), + CLK(NULL, "dpll4_m4_ck", &dpll4_m4_ck, CK_343X), + CLK(NULL, "dpll4_m4x2_ck", &dpll4_m4x2_ck, CK_343X), + CLK(NULL, "dpll4_m5_ck", &dpll4_m5_ck, CK_343X), + CLK(NULL, "dpll4_m5x2_ck", &dpll4_m5x2_ck, CK_343X), + CLK(NULL, "dpll4_m6_ck", &dpll4_m6_ck, CK_343X), + CLK(NULL, "dpll4_m6x2_ck", &dpll4_m6x2_ck, CK_343X), + CLK(NULL, "emu_per_alwon_ck", &emu_per_alwon_ck, CK_343X), + CLK(NULL, "dpll5_ck", &dpll5_ck, CK_3430ES2), + CLK(NULL, "dpll5_m2_ck", &dpll5_m2_ck, CK_3430ES2), + CLK(NULL, "clkout2_src_ck", &clkout2_src_ck, CK_343X), + CLK(NULL, "sys_clkout2", &sys_clkout2, CK_343X), + CLK(NULL, "corex2_fck", &corex2_fck, CK_343X), + CLK(NULL, "dpll1_fck", &dpll1_fck, CK_343X), + CLK(NULL, "mpu_ck", &mpu_ck, CK_343X), + CLK(NULL, "arm_fck", &arm_fck, CK_343X), + CLK(NULL, "emu_mpu_alwon_ck", &emu_mpu_alwon_ck, CK_343X), + CLK(NULL, "dpll2_fck", &dpll2_fck, CK_343X), + CLK(NULL, "iva2_ck", &iva2_ck, CK_343X), + CLK(NULL, "l3_ick", &l3_ick, CK_343X), + CLK(NULL, "l4_ick", &l4_ick, CK_343X), + CLK(NULL, "rm_ick", &rm_ick, CK_343X), + CLK(NULL, "gfx_l3_ck", &gfx_l3_ck, CK_3430ES1), + CLK(NULL, "gfx_l3_fck", &gfx_l3_fck, CK_3430ES1), + CLK(NULL, "gfx_l3_ick", &gfx_l3_ick, CK_3430ES1), + CLK(NULL, "gfx_cg1_ck", &gfx_cg1_ck, CK_3430ES1), + CLK(NULL, "gfx_cg2_ck", &gfx_cg2_ck, CK_3430ES1), + CLK(NULL, "sgx_fck", &sgx_fck, CK_3430ES2), + CLK(NULL, "sgx_ick", &sgx_ick, CK_3430ES2), + CLK(NULL, "d2d_26m_fck", &d2d_26m_fck, CK_3430ES1), + CLK(NULL, "gpt10_fck", &gpt10_fck, CK_343X), + CLK(NULL, "gpt11_fck", &gpt11_fck, CK_343X), + CLK(NULL, "cpefuse_fck", &cpefuse_fck, CK_3430ES2), + CLK(NULL, "ts_fck", &ts_fck, CK_3430ES2), + CLK(NULL, "usbtll_fck", &usbtll_fck, CK_3430ES2), + CLK(NULL, "core_96m_fck", &core_96m_fck, CK_343X), + CLK("mmci-omap-hs.2", "fck", &mmchs3_fck, CK_3430ES2), + CLK("mmci-omap-hs.1", "fck", &mmchs2_fck, CK_343X), + CLK(NULL, "mspro_fck", &mspro_fck, CK_343X), + CLK("mmci-omap-hs.0", "fck", &mmchs1_fck, CK_343X), + CLK("i2c_omap.3", "fck", &i2c3_fck, CK_343X), + CLK("i2c_omap.2", "fck", &i2c2_fck, CK_343X), + CLK("i2c_omap.1", "fck", &i2c1_fck, CK_343X), + CLK("omap-mcbsp.5", "fck", &mcbsp5_fck, CK_343X), + CLK("omap-mcbsp.1", "fck", &mcbsp1_fck, CK_343X), + CLK(NULL, "core_48m_fck", &core_48m_fck, CK_343X), + CLK("omap2_mcspi.4", "fck", &mcspi4_fck, CK_343X), + CLK("omap2_mcspi.3", "fck", &mcspi3_fck, CK_343X), + CLK("omap2_mcspi.2", "fck", &mcspi2_fck, CK_343X), + CLK("omap2_mcspi.1", "fck", &mcspi1_fck, CK_343X), + CLK(NULL, "uart2_fck", &uart2_fck, CK_343X), + CLK(NULL, "uart1_fck", &uart1_fck, CK_343X), + CLK(NULL, "fshostusb_fck", &fshostusb_fck, CK_3430ES1), + CLK(NULL, "core_12m_fck", &core_12m_fck, CK_343X), + CLK("omap_hdq.0", "fck", &hdq_fck, CK_343X), + CLK(NULL, "ssi_ssr_fck", &ssi_ssr_fck, CK_343X), + CLK(NULL, "ssi_sst_fck", &ssi_sst_fck, CK_343X), + CLK(NULL, "core_l3_ick", &core_l3_ick, CK_343X), + CLK(NULL, "hsotgusb_ick", &hsotgusb_ick, CK_343X), + CLK(NULL, "sdrc_ick", &sdrc_ick, CK_343X), + CLK(NULL, "gpmc_fck", &gpmc_fck, CK_343X), + CLK(NULL, "security_l3_ick", &security_l3_ick, CK_343X), + CLK(NULL, "pka_ick", &pka_ick, CK_343X), + CLK(NULL, "core_l4_ick", &core_l4_ick, CK_343X), + CLK(NULL, "usbtll_ick", &usbtll_ick, CK_3430ES2), + CLK("mmci-omap-hs.2", "ick", &mmchs3_ick, CK_3430ES2), + CLK(NULL, "icr_ick", &icr_ick, CK_343X), + CLK(NULL, "aes2_ick", &aes2_ick, CK_343X), + CLK(NULL, "sha12_ick", &sha12_ick, CK_343X), + CLK(NULL, "des2_ick", &des2_ick, CK_343X), + CLK("mmci-omap-hs.1", "ick", &mmchs2_ick, CK_343X), + CLK("mmci-omap-hs.0", "ick", &mmchs1_ick, CK_343X), + CLK(NULL, "mspro_ick", &mspro_ick, CK_343X), + CLK("omap_hdq.0", "ick", &hdq_ick, CK_343X), + CLK("omap2_mcspi.4", "ick", &mcspi4_ick, CK_343X), + CLK("omap2_mcspi.3", "ick", &mcspi3_ick, CK_343X), + CLK("omap2_mcspi.2", "ick", &mcspi2_ick, CK_343X), + CLK("omap2_mcspi.1", "ick", &mcspi1_ick, CK_343X), + CLK("i2c_omap.3", "ick", &i2c3_ick, CK_343X), + CLK("i2c_omap.2", "ick", &i2c2_ick, CK_343X), + CLK("i2c_omap.1", "ick", &i2c1_ick, CK_343X), + CLK(NULL, "uart2_ick", &uart2_ick, CK_343X), + CLK(NULL, "uart1_ick", &uart1_ick, CK_343X), + CLK(NULL, "gpt11_ick", &gpt11_ick, CK_343X), + CLK(NULL, "gpt10_ick", &gpt10_ick, CK_343X), + CLK("omap-mcbsp.5", "ick", &mcbsp5_ick, CK_343X), + CLK("omap-mcbsp.1", "ick", &mcbsp1_ick, CK_343X), + CLK(NULL, "fac_ick", &fac_ick, CK_3430ES1), + CLK(NULL, "mailboxes_ick", &mailboxes_ick, CK_343X), + CLK(NULL, "omapctrl_ick", &omapctrl_ick, CK_343X), + CLK(NULL, "ssi_l4_ick", &ssi_l4_ick, CK_343X), + CLK(NULL, "ssi_ick", &ssi_ick, CK_343X), + CLK(NULL, "usb_l4_ick", &usb_l4_ick, CK_3430ES1), + CLK(NULL, "security_l4_ick2", &security_l4_ick2, CK_343X), + CLK(NULL, "aes1_ick", &aes1_ick, CK_343X), + CLK("omap_rng", "ick", &rng_ick, CK_343X), + CLK(NULL, "sha11_ick", &sha11_ick, CK_343X), + CLK(NULL, "des1_ick", &des1_ick, CK_343X), + CLK(NULL, "dss1_alwon_fck", &dss1_alwon_fck, CK_343X), + CLK(NULL, "dss_tv_fck", &dss_tv_fck, CK_343X), + CLK(NULL, "dss_96m_fck", &dss_96m_fck, CK_343X), + CLK(NULL, "dss2_alwon_fck", &dss2_alwon_fck, CK_343X), + CLK(NULL, "dss_ick", &dss_ick, CK_343X), + CLK(NULL, "cam_mclk", &cam_mclk, CK_343X), + CLK(NULL, "cam_ick", &cam_ick, CK_343X), + CLK(NULL, "csi2_96m_fck", &csi2_96m_fck, CK_343X), + CLK(NULL, "usbhost_120m_fck", &usbhost_120m_fck, CK_3430ES2), + CLK(NULL, "usbhost_48m_fck", &usbhost_48m_fck, CK_3430ES2), + CLK(NULL, "usbhost_ick", &usbhost_ick, CK_3430ES2), + CLK(NULL, "usim_fck", &usim_fck, CK_3430ES2), + CLK(NULL, "gpt1_fck", &gpt1_fck, CK_343X), + CLK(NULL, "wkup_32k_fck", &wkup_32k_fck, CK_343X), + CLK(NULL, "gpio1_dbck", &gpio1_dbck, CK_343X), + CLK("omap_wdt", "fck", &wdt2_fck, CK_343X), + CLK(NULL, "wkup_l4_ick", &wkup_l4_ick, CK_343X), + CLK(NULL, "usim_ick", &usim_ick, CK_3430ES2), + CLK("omap_wdt", "ick", &wdt2_ick, CK_343X), + CLK(NULL, "wdt1_ick", &wdt1_ick, CK_343X), + CLK(NULL, "gpio1_ick", &gpio1_ick, CK_343X), + CLK(NULL, "omap_32ksync_ick", &omap_32ksync_ick, CK_343X), + CLK(NULL, "gpt12_ick", &gpt12_ick, CK_343X), + CLK(NULL, "gpt1_ick", &gpt1_ick, CK_343X), + CLK(NULL, "per_96m_fck", &per_96m_fck, CK_343X), + CLK(NULL, "per_48m_fck", &per_48m_fck, CK_343X), + CLK(NULL, "uart3_fck", &uart3_fck, CK_343X), + CLK(NULL, "gpt2_fck", &gpt2_fck, CK_343X), + CLK(NULL, "gpt3_fck", &gpt3_fck, CK_343X), + CLK(NULL, "gpt4_fck", &gpt4_fck, CK_343X), + CLK(NULL, "gpt5_fck", &gpt5_fck, CK_343X), + CLK(NULL, "gpt6_fck", &gpt6_fck, CK_343X), + CLK(NULL, "gpt7_fck", &gpt7_fck, CK_343X), + CLK(NULL, "gpt8_fck", &gpt8_fck, CK_343X), + CLK(NULL, "gpt9_fck", &gpt9_fck, CK_343X), + CLK(NULL, "per_32k_alwon_fck", &per_32k_alwon_fck, CK_343X), + CLK(NULL, "gpio6_dbck", &gpio6_dbck, CK_343X), + CLK(NULL, "gpio5_dbck", &gpio5_dbck, CK_343X), + CLK(NULL, "gpio4_dbck", &gpio4_dbck, CK_343X), + CLK(NULL, "gpio3_dbck", &gpio3_dbck, CK_343X), + CLK(NULL, "gpio2_dbck", &gpio2_dbck, CK_343X), + CLK(NULL, "wdt3_fck", &wdt3_fck, CK_343X), + CLK(NULL, "per_l4_ick", &per_l4_ick, CK_343X), + CLK(NULL, "gpio6_ick", &gpio6_ick, CK_343X), + CLK(NULL, "gpio5_ick", &gpio5_ick, CK_343X), + CLK(NULL, "gpio4_ick", &gpio4_ick, CK_343X), + CLK(NULL, "gpio3_ick", &gpio3_ick, CK_343X), + CLK(NULL, "gpio2_ick", &gpio2_ick, CK_343X), + CLK(NULL, "wdt3_ick", &wdt3_ick, CK_343X), + CLK(NULL, "uart3_ick", &uart3_ick, CK_343X), + CLK(NULL, "gpt9_ick", &gpt9_ick, CK_343X), + CLK(NULL, "gpt8_ick", &gpt8_ick, CK_343X), + CLK(NULL, "gpt7_ick", &gpt7_ick, CK_343X), + CLK(NULL, "gpt6_ick", &gpt6_ick, CK_343X), + CLK(NULL, "gpt5_ick", &gpt5_ick, CK_343X), + CLK(NULL, "gpt4_ick", &gpt4_ick, CK_343X), + CLK(NULL, "gpt3_ick", &gpt3_ick, CK_343X), + CLK(NULL, "gpt2_ick", &gpt2_ick, CK_343X), + CLK("omap-mcbsp.2", "ick", &mcbsp2_ick, CK_343X), + CLK("omap-mcbsp.3", "ick", &mcbsp3_ick, CK_343X), + CLK("omap-mcbsp.4", "ick", &mcbsp4_ick, CK_343X), + CLK("omap-mcbsp.2", "fck", &mcbsp2_fck, CK_343X), + CLK("omap-mcbsp.3", "fck", &mcbsp3_fck, CK_343X), + CLK("omap-mcbsp.4", "fck", &mcbsp4_fck, CK_343X), + CLK(NULL, "emu_src_ck", &emu_src_ck, CK_343X), + CLK(NULL, "pclk_fck", &pclk_fck, CK_343X), + CLK(NULL, "pclkx2_fck", &pclkx2_fck, CK_343X), + CLK(NULL, "atclk_fck", &atclk_fck, CK_343X), + CLK(NULL, "traceclk_src_fck", &traceclk_src_fck, CK_343X), + CLK(NULL, "traceclk_fck", &traceclk_fck, CK_343X), + CLK(NULL, "sr1_fck", &sr1_fck, CK_343X), + CLK(NULL, "sr2_fck", &sr2_fck, CK_343X), + CLK(NULL, "sr_l4_ick", &sr_l4_ick, CK_343X), + CLK(NULL, "secure_32k_fck", &secure_32k_fck, CK_343X), + CLK(NULL, "gpt12_fck", &gpt12_fck, CK_343X), + CLK(NULL, "wdt1_fck", &wdt1_fck, CK_343X), +}; + /* CM_AUTOIDLE_PLL*.AUTO_* bit values */ #define DPLL_AUTOIDLE_DISABLE 0x0 #define DPLL_AUTOIDLE_LOW_POWER_STOP 0x1 @@ -51,11 +287,9 @@ * * Recalculate and propagate the DPLL rate. */ -static void omap3_dpll_recalc(struct clk *clk) +static unsigned long omap3_dpll_recalc(struct clk *clk) { - clk->rate = omap2_get_dpll_rate(clk); - - propagate_rate(clk); + return omap2_get_dpll_rate(clk); } /* _omap3_dpll_write_clken - write clken_bits arg to a DPLL's enable bits */ @@ -78,14 +312,12 @@ static int _omap3_wait_dpll_status(struct clk *clk, u8 state) const struct dpll_data *dd; int i = 0; int ret = -EINVAL; - u32 idlest_mask; dd = clk->dpll_data; - state <<= dd->idlest_bit; - idlest_mask = 1 << dd->idlest_bit; + state <<= __ffs(dd->idlest_mask); - while (((__raw_readl(dd->idlest_reg) & idlest_mask) != state) && + while (((__raw_readl(dd->idlest_reg) & dd->idlest_mask) != state) && i < MAX_DPLL_WAIT_TRIES) { i++; udelay(1); @@ -104,6 +336,42 @@ static int _omap3_wait_dpll_status(struct clk *clk, u8 state) return ret; } +/* From 3430 TRM ES2 4.7.6.2 */ +static u16 _omap3_dpll_compute_freqsel(struct clk *clk, u8 n) +{ + unsigned long fint; + u16 f = 0; + + fint = clk->dpll_data->clk_ref->rate / (n + 1); + + pr_debug("clock: fint is %lu\n", fint); + + if (fint >= 750000 && fint <= 1000000) + f = 0x3; + else if (fint > 1000000 && fint <= 1250000) + f = 0x4; + else if (fint > 1250000 && fint <= 1500000) + f = 0x5; + else if (fint > 1500000 && fint <= 1750000) + f = 0x6; + else if (fint > 1750000 && fint <= 2100000) + f = 0x7; + else if (fint > 7500000 && fint <= 10000000) + f = 0xB; + else if (fint > 10000000 && fint <= 12500000) + f = 0xC; + else if (fint > 12500000 && fint <= 15000000) + f = 0xD; + else if (fint > 15000000 && fint <= 17500000) + f = 0xE; + else if (fint > 17500000 && fint <= 21000000) + f = 0xF; + else + pr_debug("clock: unknown freqsel setting for %d\n", n); + + return f; +} + /* Non-CORE DPLL (e.g., DPLLs that do not control SDRC) clock functions */ /* @@ -128,25 +396,20 @@ static int _omap3_noncore_dpll_lock(struct clk *clk) ai = omap3_dpll_autoidle_read(clk); + omap3_dpll_deny_idle(clk); + _omap3_dpll_write_clken(clk, DPLL_LOCKED); - if (ai) { - /* - * If no downstream clocks are enabled, CM_IDLEST bit - * may never become active, so don't wait for DPLL to lock. - */ - r = 0; + r = _omap3_wait_dpll_status(clk, 1); + + if (ai) omap3_dpll_allow_idle(clk); - } else { - r = _omap3_wait_dpll_status(clk, 1); - omap3_dpll_deny_idle(clk); - }; return r; } /* - * omap3_noncore_dpll_bypass - instruct a DPLL to bypass and wait for readiness + * _omap3_noncore_dpll_bypass - instruct a DPLL to bypass and wait for readiness * @clk: pointer to a DPLL struct clk * * Instructs a non-CORE DPLL to enter low-power bypass mode. In @@ -236,14 +499,25 @@ static int _omap3_noncore_dpll_stop(struct clk *clk) static int omap3_noncore_dpll_enable(struct clk *clk) { int r; + struct dpll_data *dd; if (clk == &dpll3_ck) return -EINVAL; - if (clk->parent->rate == clk_get_rate(clk)) + dd = clk->dpll_data; + if (!dd) + return -EINVAL; + + if (clk->rate == dd->clk_bypass->rate) { + WARN_ON(clk->parent != dd->clk_bypass); r = _omap3_noncore_dpll_bypass(clk); - else + } else { + WARN_ON(clk->parent != dd->clk_ref); r = _omap3_noncore_dpll_lock(clk); + } + /* FIXME: this is dubious - if clk->rate has changed, what about propagating? */ + if (!r) + clk->rate = omap2_get_dpll_rate(clk); return r; } @@ -270,6 +544,215 @@ static void omap3_noncore_dpll_disable(struct clk *clk) _omap3_noncore_dpll_stop(clk); } + +/* Non-CORE DPLL rate set code */ + +/* + * omap3_noncore_dpll_program - set non-core DPLL M,N values directly + * @clk: struct clk * of DPLL to set + * @m: DPLL multiplier to set + * @n: DPLL divider to set + * @freqsel: FREQSEL value to set + * + * Program the DPLL with the supplied M, N values, and wait for the DPLL to + * lock.. Returns -EINVAL upon error, or 0 upon success. + */ +static int omap3_noncore_dpll_program(struct clk *clk, u16 m, u8 n, u16 freqsel) +{ + struct dpll_data *dd = clk->dpll_data; + u32 v; + + /* 3430 ES2 TRM: 4.7.6.9 DPLL Programming Sequence */ + _omap3_noncore_dpll_bypass(clk); + + /* Set jitter correction */ + v = __raw_readl(dd->control_reg); + v &= ~dd->freqsel_mask; + v |= freqsel << __ffs(dd->freqsel_mask); + __raw_writel(v, dd->control_reg); + + /* Set DPLL multiplier, divider */ + v = __raw_readl(dd->mult_div1_reg); + v &= ~(dd->mult_mask | dd->div1_mask); + v |= m << __ffs(dd->mult_mask); + v |= (n - 1) << __ffs(dd->div1_mask); + __raw_writel(v, dd->mult_div1_reg); + + /* We let the clock framework set the other output dividers later */ + + /* REVISIT: Set ramp-up delay? */ + + _omap3_noncore_dpll_lock(clk); + + return 0; +} + +/** + * omap3_noncore_dpll_set_rate - set non-core DPLL rate + * @clk: struct clk * of DPLL to set + * @rate: rounded target rate + * + * Set the DPLL CLKOUT to the target rate. If the DPLL can enter + * low-power bypass, and the target rate is the bypass source clock + * rate, then configure the DPLL for bypass. Otherwise, round the + * target rate if it hasn't been done already, then program and lock + * the DPLL. Returns -EINVAL upon error, or 0 upon success. + */ +static int omap3_noncore_dpll_set_rate(struct clk *clk, unsigned long rate) +{ + struct clk *new_parent = NULL; + u16 freqsel; + struct dpll_data *dd; + int ret; + + if (!clk || !rate) + return -EINVAL; + + dd = clk->dpll_data; + if (!dd) + return -EINVAL; + + if (rate == omap2_get_dpll_rate(clk)) + return 0; + + /* + * Ensure both the bypass and ref clocks are enabled prior to + * doing anything; we need the bypass clock running to reprogram + * the DPLL. + */ + omap2_clk_enable(dd->clk_bypass); + omap2_clk_enable(dd->clk_ref); + + if (dd->clk_bypass->rate == rate && + (clk->dpll_data->modes & (1 << DPLL_LOW_POWER_BYPASS))) { + pr_debug("clock: %s: set rate: entering bypass.\n", clk->name); + + ret = _omap3_noncore_dpll_bypass(clk); + if (!ret) + new_parent = dd->clk_bypass; + } else { + if (dd->last_rounded_rate != rate) + omap2_dpll_round_rate(clk, rate); + + if (dd->last_rounded_rate == 0) + return -EINVAL; + + freqsel = _omap3_dpll_compute_freqsel(clk, dd->last_rounded_n); + if (!freqsel) + WARN_ON(1); + + pr_debug("clock: %s: set rate: locking rate to %lu.\n", + clk->name, rate); + + ret = omap3_noncore_dpll_program(clk, dd->last_rounded_m, + dd->last_rounded_n, freqsel); + if (!ret) + new_parent = dd->clk_ref; + } + if (!ret) { + /* + * Switch the parent clock in the heirarchy, and make sure + * that the new parent's usecount is correct. Note: we + * enable the new parent before disabling the old to avoid + * any unnecessary hardware disable->enable transitions. + */ + if (clk->usecount) { + omap2_clk_enable(new_parent); + omap2_clk_disable(clk->parent); + } + clk_reparent(clk, new_parent); + clk->rate = rate; + } + omap2_clk_disable(dd->clk_ref); + omap2_clk_disable(dd->clk_bypass); + + return 0; +} + +static int omap3_dpll4_set_rate(struct clk *clk, unsigned long rate) +{ + /* + * According to the 12-5 CDP code from TI, "Limitation 2.5" + * on 3430ES1 prevents us from changing DPLL multipliers or dividers + * on DPLL4. + */ + if (omap_rev() == OMAP3430_REV_ES1_0) { + printk(KERN_ERR "clock: DPLL4 cannot change rate due to " + "silicon 'Limitation 2.5' on 3430ES1.\n"); + return -EINVAL; + } + return omap3_noncore_dpll_set_rate(clk, rate); +} + + +/* + * CORE DPLL (DPLL3) rate programming functions + * + * These call into SRAM code to do the actual CM writes, since the SDRAM + * is clocked from DPLL3. + */ + +/** + * omap3_core_dpll_m2_set_rate - set CORE DPLL M2 divider + * @clk: struct clk * of DPLL to set + * @rate: rounded target rate + * + * Program the DPLL M2 divider with the rounded target rate. Returns + * -EINVAL upon error, or 0 upon success. + */ +static int omap3_core_dpll_m2_set_rate(struct clk *clk, unsigned long rate) +{ + u32 new_div = 0; + unsigned long validrate, sdrcrate; + struct omap_sdrc_params *sp; + + if (!clk || !rate) + return -EINVAL; + + if (clk != &dpll3_m2_ck) + return -EINVAL; + + if (rate == clk->rate) + return 0; + + validrate = omap2_clksel_round_rate_div(clk, rate, &new_div); + if (validrate != rate) + return -EINVAL; + + sdrcrate = sdrc_ick.rate; + if (rate > clk->rate) + sdrcrate <<= ((rate / clk->rate) - 1); + else + sdrcrate >>= ((clk->rate / rate) - 1); + + sp = omap2_sdrc_get_params(sdrcrate); + if (!sp) + return -EINVAL; + + pr_info("clock: changing CORE DPLL rate from %lu to %lu\n", clk->rate, + validrate); + pr_info("clock: SDRC timing params used: %08x %08x %08x\n", + sp->rfr_ctrl, sp->actim_ctrla, sp->actim_ctrlb); + + /* REVISIT: SRAM code doesn't support other M2 divisors yet */ + WARN_ON(new_div != 1 && new_div != 2); + + /* REVISIT: Add SDRC_MR changing to this code also */ + omap3_configure_core_dpll(sp->rfr_ctrl, sp->actim_ctrla, + sp->actim_ctrlb, new_div); + + return 0; +} + + +static const struct clkops clkops_noncore_dpll_ops = { + .enable = &omap3_noncore_dpll_enable, + .disable = &omap3_noncore_dpll_disable, +}; + +/* DPLL autoidle read/set code */ + + /** * omap3_dpll_autoidle_read - read a DPLL's autoidle bits * @clk: struct clk * of the DPLL to read @@ -356,9 +839,10 @@ static void omap3_dpll_deny_idle(struct clk *clk) * Using parent clock DPLL data, look up DPLL state. If locked, set our * rate to the dpll_clk * 2; otherwise, just use dpll_clk. */ -static void omap3_clkoutx2_recalc(struct clk *clk) +static unsigned long omap3_clkoutx2_recalc(struct clk *clk) { const struct dpll_data *dd; + unsigned long rate; u32 v; struct clk *pclk; @@ -372,17 +856,15 @@ static void omap3_clkoutx2_recalc(struct clk *clk) dd = pclk->dpll_data; - WARN_ON(!dd->control_reg || !dd->enable_mask); + WARN_ON(!dd->enable_mask); v = __raw_readl(dd->control_reg) & dd->enable_mask; v >>= __ffs(dd->enable_mask); - if (v != DPLL_LOCKED) - clk->rate = clk->parent->rate; + if (v != OMAP3XXX_EN_DPLL_LOCKED) + rate = clk->parent->rate; else - clk->rate = clk->parent->rate * 2; - - if (clk->flags & RATE_PROPAGATES) - propagate_rate(clk); + rate = clk->parent->rate * 2; + return rate; } /* Common clock code */ @@ -432,7 +914,7 @@ static int __init omap2_clk_arch_init(void) /* REVISIT: not yet ready for 343x */ #if 0 - if (omap2_select_table_rate(&virt_prcm_set, mpurate)) + if (clk_set_rate(&virt_prcm_set, mpurate)) printk(KERN_ERR "Could not find matching MPU rate\n"); #endif @@ -450,26 +932,13 @@ arch_initcall(omap2_clk_arch_init); int __init omap2_clk_init(void) { /* struct prcm_config *prcm; */ - struct clk **clkp; + struct omap_clk *c; /* u32 clkrate; */ u32 cpu_clkflg; - /* REVISIT: Ultimately this will be used for multiboot */ -#if 0 - if (cpu_is_omap242x()) { - cpu_mask = RATE_IN_242X; - cpu_clkflg = CLOCK_IN_OMAP242X; - clkp = onchip_24xx_clks; - } else if (cpu_is_omap2430()) { - cpu_mask = RATE_IN_243X; - cpu_clkflg = CLOCK_IN_OMAP243X; - clkp = onchip_24xx_clks; - } -#endif if (cpu_is_omap34xx()) { cpu_mask = RATE_IN_343X; - cpu_clkflg = CLOCK_IN_OMAP343X; - clkp = onchip_34xx_clks; + cpu_clkflg = CK_343X; /* * Update this if there are further clock changes between ES2 @@ -477,23 +946,24 @@ int __init omap2_clk_init(void) */ if (omap_rev() == OMAP3430_REV_ES1_0) { /* No 3430ES1-only rates exist, so no RATE_IN_3430ES1 */ - cpu_clkflg |= CLOCK_IN_OMAP3430ES1; + cpu_clkflg |= CK_3430ES1; } else { cpu_mask |= RATE_IN_3430ES2; - cpu_clkflg |= CLOCK_IN_OMAP3430ES2; + cpu_clkflg |= CK_3430ES2; } } clk_init(&omap2_clk_functions); - for (clkp = onchip_34xx_clks; - clkp < onchip_34xx_clks + ARRAY_SIZE(onchip_34xx_clks); - clkp++) { - if ((*clkp)->flags & cpu_clkflg) { - clk_register(*clkp); - omap2_init_clk_clkdm(*clkp); + 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); + clk_register(c->lk.clk); + omap2_init_clk_clkdm(c->lk.clk); } - } /* REVISIT: Not yet ready for OMAP3 */ #if 0 |