diff options
author | Uwe Kleine-König <u.kleine-koenig@pengutronix.de> | 2011-03-17 09:40:29 +0100 |
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committer | Sascha Hauer <s.hauer@pengutronix.de> | 2011-05-19 13:11:38 +0200 |
commit | 27ad4bf72a27c80c121b2349174e6b41b2e3afd8 (patch) | |
tree | 864ddd4e58386f22c9fda4457ebc5bb23d790792 /arch/arm/mach-mx3/clock-imx35.c | |
parent | MX1: Add ARMadeus Systems APF9328 board support (diff) | |
download | linux-27ad4bf72a27c80c121b2349174e6b41b2e3afd8.tar.xz linux-27ad4bf72a27c80c121b2349174e6b41b2e3afd8.zip |
ARM: imx: move mx3 support to mach-imx
Fixing a few "please, no space before tabs" and "empty line at end of
file" warnings on the way.
LAKML-Reference: 1299271882-2130-6-git-send-email-u.kleine-koenig@pengutronix.de
Signed-off-by: Uwe Kleine-König <u.kleine-koenig@pengutronix.de>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
Diffstat (limited to 'arch/arm/mach-mx3/clock-imx35.c')
-rw-r--r-- | arch/arm/mach-mx3/clock-imx35.c | 550 |
1 files changed, 0 insertions, 550 deletions
diff --git a/arch/arm/mach-mx3/clock-imx35.c b/arch/arm/mach-mx3/clock-imx35.c deleted file mode 100644 index 448a038cd1ec..000000000000 --- a/arch/arm/mach-mx3/clock-imx35.c +++ /dev/null @@ -1,550 +0,0 @@ -/* - * Copyright (C) 2009 by Sascha Hauer, Pengutronix - * - * 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, or (at your option) any later version. - * 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., 51 Franklin Street, Fifth Floor, Boston, - * MA 02110-1301, USA. - */ - -#include <linux/kernel.h> -#include <linux/init.h> -#include <linux/list.h> -#include <linux/clk.h> -#include <linux/io.h> -#include <linux/clkdev.h> - -#include <mach/clock.h> -#include <mach/hardware.h> -#include <mach/common.h> - -#define CCM_BASE MX35_IO_ADDRESS(MX35_CCM_BASE_ADDR) - -#define CCM_CCMR 0x00 -#define CCM_PDR0 0x04 -#define CCM_PDR1 0x08 -#define CCM_PDR2 0x0C -#define CCM_PDR3 0x10 -#define CCM_PDR4 0x14 -#define CCM_RCSR 0x18 -#define CCM_MPCTL 0x1C -#define CCM_PPCTL 0x20 -#define CCM_ACMR 0x24 -#define CCM_COSR 0x28 -#define CCM_CGR0 0x2C -#define CCM_CGR1 0x30 -#define CCM_CGR2 0x34 -#define CCM_CGR3 0x38 - -#ifdef HAVE_SET_RATE_SUPPORT -static void calc_dividers(u32 div, u32 *pre, u32 *post, u32 maxpost) -{ - u32 min_pre, temp_pre, old_err, err; - - min_pre = (div - 1) / maxpost + 1; - old_err = 8; - - for (temp_pre = 8; temp_pre >= min_pre; temp_pre--) { - if (div > (temp_pre * maxpost)) - break; - - if (div < (temp_pre * temp_pre)) - continue; - - err = div % temp_pre; - - if (err == 0) { - *pre = temp_pre; - break; - } - - err = temp_pre - err; - - if (err < old_err) { - old_err = err; - *pre = temp_pre; - } - } - - *post = (div + *pre - 1) / *pre; -} - -/* get the best values for a 3-bit divider combined with a 6-bit divider */ -static void calc_dividers_3_6(u32 div, u32 *pre, u32 *post) -{ - if (div >= 512) { - *pre = 8; - *post = 64; - } else if (div >= 64) { - calc_dividers(div, pre, post, 64); - } else if (div <= 8) { - *pre = div; - *post = 1; - } else { - *pre = 1; - *post = div; - } -} - -/* get the best values for two cascaded 3-bit dividers */ -static void calc_dividers_3_3(u32 div, u32 *pre, u32 *post) -{ - if (div >= 64) { - *pre = *post = 8; - } else if (div > 8) { - calc_dividers(div, pre, post, 8); - } else { - *pre = 1; - *post = div; - } -} -#endif - -static unsigned long get_rate_mpll(void) -{ - ulong mpctl = __raw_readl(CCM_BASE + CCM_MPCTL); - - return mxc_decode_pll(mpctl, 24000000); -} - -static unsigned long get_rate_ppll(void) -{ - ulong ppctl = __raw_readl(CCM_BASE + CCM_PPCTL); - - return mxc_decode_pll(ppctl, 24000000); -} - -struct arm_ahb_div { - unsigned char arm, ahb, sel; -}; - -static struct arm_ahb_div clk_consumer[] = { - { .arm = 1, .ahb = 4, .sel = 0}, - { .arm = 1, .ahb = 3, .sel = 1}, - { .arm = 2, .ahb = 2, .sel = 0}, - { .arm = 0, .ahb = 0, .sel = 0}, - { .arm = 0, .ahb = 0, .sel = 0}, - { .arm = 0, .ahb = 0, .sel = 0}, - { .arm = 4, .ahb = 1, .sel = 0}, - { .arm = 1, .ahb = 5, .sel = 0}, - { .arm = 1, .ahb = 8, .sel = 0}, - { .arm = 1, .ahb = 6, .sel = 1}, - { .arm = 2, .ahb = 4, .sel = 0}, - { .arm = 0, .ahb = 0, .sel = 0}, - { .arm = 0, .ahb = 0, .sel = 0}, - { .arm = 0, .ahb = 0, .sel = 0}, - { .arm = 4, .ahb = 2, .sel = 0}, - { .arm = 0, .ahb = 0, .sel = 0}, -}; - -static unsigned long get_rate_arm(void) -{ - unsigned long pdr0 = __raw_readl(CCM_BASE + CCM_PDR0); - struct arm_ahb_div *aad; - unsigned long fref = get_rate_mpll(); - - aad = &clk_consumer[(pdr0 >> 16) & 0xf]; - if (aad->sel) - fref = fref * 3 / 4; - - return fref / aad->arm; -} - -static unsigned long get_rate_ahb(struct clk *clk) -{ - unsigned long pdr0 = __raw_readl(CCM_BASE + CCM_PDR0); - struct arm_ahb_div *aad; - unsigned long fref = get_rate_arm(); - - aad = &clk_consumer[(pdr0 >> 16) & 0xf]; - - return fref / aad->ahb; -} - -static unsigned long get_rate_ipg(struct clk *clk) -{ - return get_rate_ahb(NULL) >> 1; -} - -static unsigned long get_rate_uart(struct clk *clk) -{ - unsigned long pdr3 = __raw_readl(CCM_BASE + CCM_PDR3); - unsigned long pdr4 = __raw_readl(CCM_BASE + CCM_PDR4); - unsigned long div = ((pdr4 >> 10) & 0x3f) + 1; - - if (pdr3 & (1 << 14)) - return get_rate_arm() / div; - else - return get_rate_ppll() / div; -} - -static unsigned long get_rate_sdhc(struct clk *clk) -{ - unsigned long pdr3 = __raw_readl(CCM_BASE + CCM_PDR3); - unsigned long div, rate; - - if (pdr3 & (1 << 6)) - rate = get_rate_arm(); - else - rate = get_rate_ppll(); - - switch (clk->id) { - default: - case 0: - div = pdr3 & 0x3f; - break; - case 1: - div = (pdr3 >> 8) & 0x3f; - break; - case 2: - div = (pdr3 >> 16) & 0x3f; - break; - } - - return rate / (div + 1); -} - -static unsigned long get_rate_mshc(struct clk *clk) -{ - unsigned long pdr1 = __raw_readl(CCM_BASE + CCM_PDR1); - unsigned long div1, div2, rate; - - if (pdr1 & (1 << 7)) - rate = get_rate_arm(); - else - rate = get_rate_ppll(); - - div1 = (pdr1 >> 29) & 0x7; - div2 = (pdr1 >> 22) & 0x3f; - - return rate / ((div1 + 1) * (div2 + 1)); -} - -static unsigned long get_rate_ssi(struct clk *clk) -{ - unsigned long pdr2 = __raw_readl(CCM_BASE + CCM_PDR2); - unsigned long div1, div2, rate; - - if (pdr2 & (1 << 6)) - rate = get_rate_arm(); - else - rate = get_rate_ppll(); - - switch (clk->id) { - default: - case 0: - div1 = pdr2 & 0x3f; - div2 = (pdr2 >> 24) & 0x7; - break; - case 1: - div1 = (pdr2 >> 8) & 0x3f; - div2 = (pdr2 >> 27) & 0x7; - break; - } - - return rate / ((div1 + 1) * (div2 + 1)); -} - -static unsigned long get_rate_csi(struct clk *clk) -{ - unsigned long pdr2 = __raw_readl(CCM_BASE + CCM_PDR2); - unsigned long rate; - - if (pdr2 & (1 << 7)) - rate = get_rate_arm(); - else - rate = get_rate_ppll(); - - return rate / (((pdr2 >> 16) & 0x3f) + 1); -} - -static unsigned long get_rate_otg(struct clk *clk) -{ - unsigned long pdr4 = __raw_readl(CCM_BASE + CCM_PDR4); - unsigned long rate; - - if (pdr4 & (1 << 9)) - rate = get_rate_arm(); - else - rate = get_rate_ppll(); - - return rate / (((pdr4 >> 22) & 0x3f) + 1); -} - -static unsigned long get_rate_ipg_per(struct clk *clk) -{ - unsigned long pdr0 = __raw_readl(CCM_BASE + CCM_PDR0); - unsigned long pdr4 = __raw_readl(CCM_BASE + CCM_PDR4); - unsigned long div; - - if (pdr0 & (1 << 26)) { - div = (pdr4 >> 16) & 0x3f; - return get_rate_arm() / (div + 1); - } else { - div = (pdr0 >> 12) & 0x7; - return get_rate_ahb(NULL) / (div + 1); - } -} - -static unsigned long get_rate_hsp(struct clk *clk) -{ - unsigned long hsp_podf = (__raw_readl(CCM_BASE + CCM_PDR0) >> 20) & 0x03; - unsigned long fref = get_rate_mpll(); - - if (fref > 400 * 1000 * 1000) { - switch (hsp_podf) { - case 0: - return fref >> 2; - case 1: - return fref >> 3; - case 2: - return fref / 3; - } - } else { - switch (hsp_podf) { - case 0: - case 2: - return fref / 3; - case 1: - return fref / 6; - } - } - - return 0; -} - -static int clk_cgr_enable(struct clk *clk) -{ - u32 reg; - - reg = __raw_readl(clk->enable_reg); - reg |= 3 << clk->enable_shift; - __raw_writel(reg, clk->enable_reg); - - return 0; -} - -static void clk_cgr_disable(struct clk *clk) -{ - u32 reg; - - reg = __raw_readl(clk->enable_reg); - reg &= ~(3 << clk->enable_shift); - __raw_writel(reg, clk->enable_reg); -} - -#define DEFINE_CLOCK(name, i, er, es, gr, sr) \ - static struct clk name = { \ - .id = i, \ - .enable_reg = CCM_BASE + er, \ - .enable_shift = es, \ - .get_rate = gr, \ - .set_rate = sr, \ - .enable = clk_cgr_enable, \ - .disable = clk_cgr_disable, \ - } - -DEFINE_CLOCK(asrc_clk, 0, CCM_CGR0, 0, NULL, NULL); -DEFINE_CLOCK(ata_clk, 0, CCM_CGR0, 2, get_rate_ipg, NULL); -/* DEFINE_CLOCK(audmux_clk, 0, CCM_CGR0, 4, NULL, NULL); */ -DEFINE_CLOCK(can1_clk, 0, CCM_CGR0, 6, get_rate_ipg, NULL); -DEFINE_CLOCK(can2_clk, 1, CCM_CGR0, 8, get_rate_ipg, NULL); -DEFINE_CLOCK(cspi1_clk, 0, CCM_CGR0, 10, get_rate_ipg, NULL); -DEFINE_CLOCK(cspi2_clk, 1, CCM_CGR0, 12, get_rate_ipg, NULL); -DEFINE_CLOCK(ect_clk, 0, CCM_CGR0, 14, get_rate_ipg, NULL); -DEFINE_CLOCK(edio_clk, 0, CCM_CGR0, 16, NULL, NULL); -DEFINE_CLOCK(emi_clk, 0, CCM_CGR0, 18, get_rate_ipg, NULL); -DEFINE_CLOCK(epit1_clk, 0, CCM_CGR0, 20, get_rate_ipg, NULL); -DEFINE_CLOCK(epit2_clk, 1, CCM_CGR0, 22, get_rate_ipg, NULL); -DEFINE_CLOCK(esai_clk, 0, CCM_CGR0, 24, NULL, NULL); -DEFINE_CLOCK(esdhc1_clk, 0, CCM_CGR0, 26, get_rate_sdhc, NULL); -DEFINE_CLOCK(esdhc2_clk, 1, CCM_CGR0, 28, get_rate_sdhc, NULL); -DEFINE_CLOCK(esdhc3_clk, 2, CCM_CGR0, 30, get_rate_sdhc, NULL); - -DEFINE_CLOCK(fec_clk, 0, CCM_CGR1, 0, get_rate_ipg, NULL); -DEFINE_CLOCK(gpio1_clk, 0, CCM_CGR1, 2, NULL, NULL); -DEFINE_CLOCK(gpio2_clk, 1, CCM_CGR1, 4, NULL, NULL); -DEFINE_CLOCK(gpio3_clk, 2, CCM_CGR1, 6, NULL, NULL); -DEFINE_CLOCK(gpt_clk, 0, CCM_CGR1, 8, get_rate_ipg, NULL); -DEFINE_CLOCK(i2c1_clk, 0, CCM_CGR1, 10, get_rate_ipg_per, NULL); -DEFINE_CLOCK(i2c2_clk, 1, CCM_CGR1, 12, get_rate_ipg_per, NULL); -DEFINE_CLOCK(i2c3_clk, 2, CCM_CGR1, 14, get_rate_ipg_per, NULL); -DEFINE_CLOCK(iomuxc_clk, 0, CCM_CGR1, 16, NULL, NULL); -DEFINE_CLOCK(ipu_clk, 0, CCM_CGR1, 18, get_rate_hsp, NULL); -DEFINE_CLOCK(kpp_clk, 0, CCM_CGR1, 20, get_rate_ipg, NULL); -DEFINE_CLOCK(mlb_clk, 0, CCM_CGR1, 22, get_rate_ahb, NULL); -DEFINE_CLOCK(mshc_clk, 0, CCM_CGR1, 24, get_rate_mshc, NULL); -DEFINE_CLOCK(owire_clk, 0, CCM_CGR1, 26, get_rate_ipg_per, NULL); -DEFINE_CLOCK(pwm_clk, 0, CCM_CGR1, 28, get_rate_ipg_per, NULL); -DEFINE_CLOCK(rngc_clk, 0, CCM_CGR1, 30, get_rate_ipg, NULL); - -DEFINE_CLOCK(rtc_clk, 0, CCM_CGR2, 0, get_rate_ipg, NULL); -DEFINE_CLOCK(rtic_clk, 0, CCM_CGR2, 2, get_rate_ahb, NULL); -DEFINE_CLOCK(scc_clk, 0, CCM_CGR2, 4, get_rate_ipg, NULL); -DEFINE_CLOCK(sdma_clk, 0, CCM_CGR2, 6, NULL, NULL); -DEFINE_CLOCK(spba_clk, 0, CCM_CGR2, 8, get_rate_ipg, NULL); -DEFINE_CLOCK(spdif_clk, 0, CCM_CGR2, 10, NULL, NULL); -DEFINE_CLOCK(ssi1_clk, 0, CCM_CGR2, 12, get_rate_ssi, NULL); -DEFINE_CLOCK(ssi2_clk, 1, CCM_CGR2, 14, get_rate_ssi, NULL); -DEFINE_CLOCK(uart1_clk, 0, CCM_CGR2, 16, get_rate_uart, NULL); -DEFINE_CLOCK(uart2_clk, 1, CCM_CGR2, 18, get_rate_uart, NULL); -DEFINE_CLOCK(uart3_clk, 2, CCM_CGR2, 20, get_rate_uart, NULL); -DEFINE_CLOCK(usbotg_clk, 0, CCM_CGR2, 22, get_rate_otg, NULL); -DEFINE_CLOCK(wdog_clk, 0, CCM_CGR2, 24, NULL, NULL); -DEFINE_CLOCK(max_clk, 0, CCM_CGR2, 26, NULL, NULL); -DEFINE_CLOCK(audmux_clk, 0, CCM_CGR2, 30, NULL, NULL); - -DEFINE_CLOCK(csi_clk, 0, CCM_CGR3, 0, get_rate_csi, NULL); -DEFINE_CLOCK(iim_clk, 0, CCM_CGR3, 2, NULL, NULL); -DEFINE_CLOCK(gpu2d_clk, 0, CCM_CGR3, 4, NULL, NULL); - -DEFINE_CLOCK(usbahb_clk, 0, 0, 0, get_rate_ahb, NULL); - -static int clk_dummy_enable(struct clk *clk) -{ - return 0; -} - -static void clk_dummy_disable(struct clk *clk) -{ -} - -static unsigned long get_rate_nfc(struct clk *clk) -{ - unsigned long div1; - - div1 = (__raw_readl(CCM_BASE + CCM_PDR4) >> 28) + 1; - - return get_rate_ahb(NULL) / div1; -} - -/* NAND Controller: It seems it can't be disabled */ -static struct clk nfc_clk = { - .id = 0, - .enable_reg = 0, - .enable_shift = 0, - .get_rate = get_rate_nfc, - .set_rate = NULL, /* set_rate_nfc, */ - .enable = clk_dummy_enable, - .disable = clk_dummy_disable -}; - -#define _REGISTER_CLOCK(d, n, c) \ - { \ - .dev_id = d, \ - .con_id = n, \ - .clk = &c, \ - }, - -static struct clk_lookup lookups[] = { - _REGISTER_CLOCK(NULL, "asrc", asrc_clk) - _REGISTER_CLOCK(NULL, "ata", ata_clk) - _REGISTER_CLOCK("flexcan.0", NULL, can1_clk) - _REGISTER_CLOCK("flexcan.1", NULL, can2_clk) - _REGISTER_CLOCK("imx35-cspi.0", NULL, cspi1_clk) - _REGISTER_CLOCK("imx35-cspi.1", NULL, cspi2_clk) - _REGISTER_CLOCK(NULL, "ect", ect_clk) - _REGISTER_CLOCK(NULL, "edio", edio_clk) - _REGISTER_CLOCK(NULL, "emi", emi_clk) - _REGISTER_CLOCK("imx-epit.0", NULL, epit1_clk) - _REGISTER_CLOCK("imx-epit.1", NULL, epit2_clk) - _REGISTER_CLOCK(NULL, "esai", esai_clk) - _REGISTER_CLOCK("sdhci-esdhc-imx.0", NULL, esdhc1_clk) - _REGISTER_CLOCK("sdhci-esdhc-imx.1", NULL, esdhc2_clk) - _REGISTER_CLOCK("sdhci-esdhc-imx.2", NULL, esdhc3_clk) - _REGISTER_CLOCK("fec.0", NULL, fec_clk) - _REGISTER_CLOCK(NULL, "gpio", gpio1_clk) - _REGISTER_CLOCK(NULL, "gpio", gpio2_clk) - _REGISTER_CLOCK(NULL, "gpio", gpio3_clk) - _REGISTER_CLOCK("gpt.0", NULL, gpt_clk) - _REGISTER_CLOCK("imx-i2c.0", NULL, i2c1_clk) - _REGISTER_CLOCK("imx-i2c.1", NULL, i2c2_clk) - _REGISTER_CLOCK("imx-i2c.2", NULL, i2c3_clk) - _REGISTER_CLOCK(NULL, "iomuxc", iomuxc_clk) - _REGISTER_CLOCK("ipu-core", NULL, ipu_clk) - _REGISTER_CLOCK("mx3_sdc_fb", NULL, ipu_clk) - _REGISTER_CLOCK(NULL, "kpp", kpp_clk) - _REGISTER_CLOCK(NULL, "mlb", mlb_clk) - _REGISTER_CLOCK(NULL, "mshc", mshc_clk) - _REGISTER_CLOCK("mxc_w1", NULL, owire_clk) - _REGISTER_CLOCK(NULL, "pwm", pwm_clk) - _REGISTER_CLOCK(NULL, "rngc", rngc_clk) - _REGISTER_CLOCK(NULL, "rtc", rtc_clk) - _REGISTER_CLOCK(NULL, "rtic", rtic_clk) - _REGISTER_CLOCK(NULL, "scc", scc_clk) - _REGISTER_CLOCK("imx-sdma", NULL, sdma_clk) - _REGISTER_CLOCK(NULL, "spba", spba_clk) - _REGISTER_CLOCK(NULL, "spdif", spdif_clk) - _REGISTER_CLOCK("imx-ssi.0", NULL, ssi1_clk) - _REGISTER_CLOCK("imx-ssi.1", NULL, ssi2_clk) - _REGISTER_CLOCK("imx-uart.0", NULL, uart1_clk) - _REGISTER_CLOCK("imx-uart.1", NULL, uart2_clk) - _REGISTER_CLOCK("imx-uart.2", NULL, uart3_clk) - _REGISTER_CLOCK("mxc-ehci.0", "usb", usbotg_clk) - _REGISTER_CLOCK("mxc-ehci.1", "usb", usbotg_clk) - _REGISTER_CLOCK("mxc-ehci.2", "usb", usbotg_clk) - _REGISTER_CLOCK("fsl-usb2-udc", "usb", usbotg_clk) - _REGISTER_CLOCK("fsl-usb2-udc", "usb_ahb", usbahb_clk) - _REGISTER_CLOCK("imx2-wdt.0", NULL, wdog_clk) - _REGISTER_CLOCK(NULL, "max", max_clk) - _REGISTER_CLOCK(NULL, "audmux", audmux_clk) - _REGISTER_CLOCK(NULL, "csi", csi_clk) - _REGISTER_CLOCK(NULL, "iim", iim_clk) - _REGISTER_CLOCK(NULL, "gpu2d", gpu2d_clk) - _REGISTER_CLOCK("mxc_nand.0", NULL, nfc_clk) -}; - -int __init mx35_clocks_init() -{ - unsigned int cgr2 = 3 << 26, cgr3 = 0; - -#if defined(CONFIG_DEBUG_LL) && !defined(CONFIG_DEBUG_ICEDCC) - cgr2 |= 3 << 16; -#endif - - clkdev_add_table(lookups, ARRAY_SIZE(lookups)); - - /* Turn off all clocks except the ones we need to survive, namely: - * EMI, GPIO1/2/3, GPT, IOMUX, MAX and eventually uart - */ - __raw_writel((3 << 18), CCM_BASE + CCM_CGR0); - __raw_writel((3 << 2) | (3 << 4) | (3 << 6) | (3 << 8) | (3 << 16), - CCM_BASE + CCM_CGR1); - - /* - * Check if we came up in internal boot mode. If yes, we need some - * extra clocks turned on, otherwise the MX35 boot ROM code will - * hang after a watchdog reset. - */ - if (!(__raw_readl(CCM_BASE + CCM_RCSR) & (3 << 10))) { - /* Additionally turn on UART1, SCC, and IIM clocks */ - cgr2 |= 3 << 16 | 3 << 4; - cgr3 |= 3 << 2; - } - - __raw_writel(cgr2, CCM_BASE + CCM_CGR2); - __raw_writel(cgr3, CCM_BASE + CCM_CGR3); - - clk_enable(&iim_clk); - mx35_read_cpu_rev(); - -#ifdef CONFIG_MXC_USE_EPIT - epit_timer_init(&epit1_clk, - MX35_IO_ADDRESS(MX35_EPIT1_BASE_ADDR), MX35_INT_EPIT1); -#else - mxc_timer_init(&gpt_clk, - MX35_IO_ADDRESS(MX35_GPT1_BASE_ADDR), MX35_INT_GPT); -#endif - - return 0; -} - |