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-rw-r--r--arch/arm/mach-mx1/clock.c602
1 files changed, 0 insertions, 602 deletions
diff --git a/arch/arm/mach-mx1/clock.c b/arch/arm/mach-mx1/clock.c
deleted file mode 100644
index 6cf2d4a7511d..000000000000
--- a/arch/arm/mach-mx1/clock.c
+++ /dev/null
@@ -1,602 +0,0 @@
-/*
- * Copyright (C) 2008 Sascha Hauer <s.hauer@pengutronix.de>, 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., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
- */
-
-#include <linux/kernel.h>
-#include <linux/init.h>
-#include <linux/list.h>
-#include <linux/math64.h>
-#include <linux/err.h>
-#include <linux/clk.h>
-#include <linux/io.h>
-
-#include <asm/clkdev.h>
-
-#include <mach/clock.h>
-#include <mach/hardware.h>
-#include <mach/common.h>
-#include "crm_regs.h"
-
-static int _clk_enable(struct clk *clk)
-{
- unsigned int reg;
-
- reg = __raw_readl(clk->enable_reg);
- reg |= 1 << clk->enable_shift;
- __raw_writel(reg, clk->enable_reg);
-
- return 0;
-}
-
-static void _clk_disable(struct clk *clk)
-{
- unsigned int reg;
-
- reg = __raw_readl(clk->enable_reg);
- reg &= ~(1 << clk->enable_shift);
- __raw_writel(reg, clk->enable_reg);
-}
-
-static int _clk_can_use_parent(const struct clk *clk_arr[], unsigned int size,
- struct clk *parent)
-{
- int i;
-
- for (i = 0; i < size; i++)
- if (parent == clk_arr[i])
- return i;
-
- return -EINVAL;
-}
-
-static unsigned long
-_clk_simple_round_rate(struct clk *clk, unsigned long rate, unsigned int limit)
-{
- int div;
- unsigned long parent_rate;
-
- parent_rate = clk_get_rate(clk->parent);
-
- div = parent_rate / rate;
- if (parent_rate % rate)
- div++;
-
- if (div > limit)
- div = limit;
-
- return parent_rate / div;
-}
-
-static unsigned long _clk_parent_round_rate(struct clk *clk, unsigned long rate)
-{
- return clk->parent->round_rate(clk->parent, rate);
-}
-
-static int _clk_parent_set_rate(struct clk *clk, unsigned long rate)
-{
- return clk->parent->set_rate(clk->parent, rate);
-}
-
-static unsigned long clk16m_get_rate(struct clk *clk)
-{
- return 16000000;
-}
-
-static struct clk clk16m = {
- .get_rate = clk16m_get_rate,
- .enable = _clk_enable,
- .enable_reg = CCM_CSCR,
- .enable_shift = CCM_CSCR_OSC_EN_SHIFT,
- .disable = _clk_disable,
-};
-
-/* in Hz */
-static unsigned long clk32_rate;
-
-static unsigned long clk32_get_rate(struct clk *clk)
-{
- return clk32_rate;
-}
-
-static struct clk clk32 = {
- .get_rate = clk32_get_rate,
-};
-
-static unsigned long clk32_premult_get_rate(struct clk *clk)
-{
- return clk_get_rate(clk->parent) * 512;
-}
-
-static struct clk clk32_premult = {
- .parent = &clk32,
- .get_rate = clk32_premult_get_rate,
-};
-
-static const struct clk *prem_clk_clocks[] = {
- &clk32_premult,
- &clk16m,
-};
-
-static int prem_clk_set_parent(struct clk *clk, struct clk *parent)
-{
- int i;
- unsigned int reg = __raw_readl(CCM_CSCR);
-
- i = _clk_can_use_parent(prem_clk_clocks, ARRAY_SIZE(prem_clk_clocks),
- parent);
-
- switch (i) {
- case 0:
- reg &= ~CCM_CSCR_SYSTEM_SEL;
- break;
- case 1:
- reg |= CCM_CSCR_SYSTEM_SEL;
- break;
- default:
- return i;
- }
-
- __raw_writel(reg, CCM_CSCR);
-
- return 0;
-}
-
-static struct clk prem_clk = {
- .set_parent = prem_clk_set_parent,
-};
-
-static unsigned long system_clk_get_rate(struct clk *clk)
-{
- return mxc_decode_pll(__raw_readl(CCM_SPCTL0),
- clk_get_rate(clk->parent));
-}
-
-static struct clk system_clk = {
- .parent = &prem_clk,
- .get_rate = system_clk_get_rate,
-};
-
-static unsigned long mcu_clk_get_rate(struct clk *clk)
-{
- return mxc_decode_pll(__raw_readl(CCM_MPCTL0),
- clk_get_rate(clk->parent));
-}
-
-static struct clk mcu_clk = {
- .parent = &clk32_premult,
- .get_rate = mcu_clk_get_rate,
-};
-
-static unsigned long fclk_get_rate(struct clk *clk)
-{
- unsigned long fclk = clk_get_rate(clk->parent);
-
- if (__raw_readl(CCM_CSCR) & CCM_CSCR_PRESC)
- fclk /= 2;
-
- return fclk;
-}
-
-static struct clk fclk = {
- .parent = &mcu_clk,
- .get_rate = fclk_get_rate,
-};
-
-/*
- * get hclk ( SDRAM, CSI, Memory Stick, I2C, DMA )
- */
-static unsigned long hclk_get_rate(struct clk *clk)
-{
- return clk_get_rate(clk->parent) / (((__raw_readl(CCM_CSCR) &
- CCM_CSCR_BCLK_MASK) >> CCM_CSCR_BCLK_OFFSET) + 1);
-}
-
-static unsigned long hclk_round_rate(struct clk *clk, unsigned long rate)
-{
- return _clk_simple_round_rate(clk, rate, 16);
-}
-
-static int hclk_set_rate(struct clk *clk, unsigned long rate)
-{
- unsigned int div;
- unsigned int reg;
- unsigned long parent_rate;
-
- parent_rate = clk_get_rate(clk->parent);
-
- div = parent_rate / rate;
-
- if (div > 16 || div < 1 || ((parent_rate / div) != rate))
- return -EINVAL;
-
- div--;
-
- reg = __raw_readl(CCM_CSCR);
- reg &= ~CCM_CSCR_BCLK_MASK;
- reg |= div << CCM_CSCR_BCLK_OFFSET;
- __raw_writel(reg, CCM_CSCR);
-
- return 0;
-}
-
-static struct clk hclk = {
- .parent = &system_clk,
- .get_rate = hclk_get_rate,
- .round_rate = hclk_round_rate,
- .set_rate = hclk_set_rate,
-};
-
-static unsigned long clk48m_get_rate(struct clk *clk)
-{
- return clk_get_rate(clk->parent) / (((__raw_readl(CCM_CSCR) &
- CCM_CSCR_USB_MASK) >> CCM_CSCR_USB_OFFSET) + 1);
-}
-
-static unsigned long clk48m_round_rate(struct clk *clk, unsigned long rate)
-{
- return _clk_simple_round_rate(clk, rate, 8);
-}
-
-static int clk48m_set_rate(struct clk *clk, unsigned long rate)
-{
- unsigned int div;
- unsigned int reg;
- unsigned long parent_rate;
-
- parent_rate = clk_get_rate(clk->parent);
-
- div = parent_rate / rate;
-
- if (div > 8 || div < 1 || ((parent_rate / div) != rate))
- return -EINVAL;
-
- div--;
-
- reg = __raw_readl(CCM_CSCR);
- reg &= ~CCM_CSCR_USB_MASK;
- reg |= div << CCM_CSCR_USB_OFFSET;
- __raw_writel(reg, CCM_CSCR);
-
- return 0;
-}
-
-static struct clk clk48m = {
- .parent = &system_clk,
- .get_rate = clk48m_get_rate,
- .round_rate = clk48m_round_rate,
- .set_rate = clk48m_set_rate,
-};
-
-/*
- * get peripheral clock 1 ( UART[12], Timer[12], PWM )
- */
-static unsigned long perclk1_get_rate(struct clk *clk)
-{
- return clk_get_rate(clk->parent) / (((__raw_readl(CCM_PCDR) &
- CCM_PCDR_PCLK1_MASK) >> CCM_PCDR_PCLK1_OFFSET) + 1);
-}
-
-static unsigned long perclk1_round_rate(struct clk *clk, unsigned long rate)
-{
- return _clk_simple_round_rate(clk, rate, 16);
-}
-
-static int perclk1_set_rate(struct clk *clk, unsigned long rate)
-{
- unsigned int div;
- unsigned int reg;
- unsigned long parent_rate;
-
- parent_rate = clk_get_rate(clk->parent);
-
- div = parent_rate / rate;
-
- if (div > 16 || div < 1 || ((parent_rate / div) != rate))
- return -EINVAL;
-
- div--;
-
- reg = __raw_readl(CCM_PCDR);
- reg &= ~CCM_PCDR_PCLK1_MASK;
- reg |= div << CCM_PCDR_PCLK1_OFFSET;
- __raw_writel(reg, CCM_PCDR);
-
- return 0;
-}
-
-/*
- * get peripheral clock 2 ( LCD, SD, SPI[12] )
- */
-static unsigned long perclk2_get_rate(struct clk *clk)
-{
- return clk_get_rate(clk->parent) / (((__raw_readl(CCM_PCDR) &
- CCM_PCDR_PCLK2_MASK) >> CCM_PCDR_PCLK2_OFFSET) + 1);
-}
-
-static unsigned long perclk2_round_rate(struct clk *clk, unsigned long rate)
-{
- return _clk_simple_round_rate(clk, rate, 16);
-}
-
-static int perclk2_set_rate(struct clk *clk, unsigned long rate)
-{
- unsigned int div;
- unsigned int reg;
- unsigned long parent_rate;
-
- parent_rate = clk_get_rate(clk->parent);
-
- div = parent_rate / rate;
-
- if (div > 16 || div < 1 || ((parent_rate / div) != rate))
- return -EINVAL;
-
- div--;
-
- reg = __raw_readl(CCM_PCDR);
- reg &= ~CCM_PCDR_PCLK2_MASK;
- reg |= div << CCM_PCDR_PCLK2_OFFSET;
- __raw_writel(reg, CCM_PCDR);
-
- return 0;
-}
-
-/*
- * get peripheral clock 3 ( SSI )
- */
-static unsigned long perclk3_get_rate(struct clk *clk)
-{
- return clk_get_rate(clk->parent) / (((__raw_readl(CCM_PCDR) &
- CCM_PCDR_PCLK3_MASK) >> CCM_PCDR_PCLK3_OFFSET) + 1);
-}
-
-static unsigned long perclk3_round_rate(struct clk *clk, unsigned long rate)
-{
- return _clk_simple_round_rate(clk, rate, 128);
-}
-
-static int perclk3_set_rate(struct clk *clk, unsigned long rate)
-{
- unsigned int div;
- unsigned int reg;
- unsigned long parent_rate;
-
- parent_rate = clk_get_rate(clk->parent);
-
- div = parent_rate / rate;
-
- if (div > 128 || div < 1 || ((parent_rate / div) != rate))
- return -EINVAL;
-
- div--;
-
- reg = __raw_readl(CCM_PCDR);
- reg &= ~CCM_PCDR_PCLK3_MASK;
- reg |= div << CCM_PCDR_PCLK3_OFFSET;
- __raw_writel(reg, CCM_PCDR);
-
- return 0;
-}
-
-static struct clk perclk[] = {
- {
- .id = 0,
- .parent = &system_clk,
- .get_rate = perclk1_get_rate,
- .round_rate = perclk1_round_rate,
- .set_rate = perclk1_set_rate,
- }, {
- .id = 1,
- .parent = &system_clk,
- .get_rate = perclk2_get_rate,
- .round_rate = perclk2_round_rate,
- .set_rate = perclk2_set_rate,
- }, {
- .id = 2,
- .parent = &system_clk,
- .get_rate = perclk3_get_rate,
- .round_rate = perclk3_round_rate,
- .set_rate = perclk3_set_rate,
- }
-};
-
-static const struct clk *clko_clocks[] = {
- &perclk[0],
- &hclk,
- &clk48m,
- &clk16m,
- &prem_clk,
- &fclk,
-};
-
-static int clko_set_parent(struct clk *clk, struct clk *parent)
-{
- int i;
- unsigned int reg;
-
- i = _clk_can_use_parent(clko_clocks, ARRAY_SIZE(clko_clocks), parent);
- if (i < 0)
- return i;
-
- reg = __raw_readl(CCM_CSCR) & ~CCM_CSCR_CLKO_MASK;
- reg |= i << CCM_CSCR_CLKO_OFFSET;
- __raw_writel(reg, CCM_CSCR);
-
- if (clko_clocks[i]->set_rate && clko_clocks[i]->round_rate) {
- clk->set_rate = _clk_parent_set_rate;
- clk->round_rate = _clk_parent_round_rate;
- } else {
- clk->set_rate = NULL;
- clk->round_rate = NULL;
- }
-
- return 0;
-}
-
-static struct clk clko_clk = {
- .set_parent = clko_set_parent,
-};
-
-static struct clk dma_clk = {
- .parent = &hclk,
- .round_rate = _clk_parent_round_rate,
- .set_rate = _clk_parent_set_rate,
- .enable = _clk_enable,
- .enable_reg = SCM_GCCR,
- .enable_shift = SCM_GCCR_DMA_CLK_EN_OFFSET,
- .disable = _clk_disable,
-};
-
-static struct clk csi_clk = {
- .parent = &hclk,
- .round_rate = _clk_parent_round_rate,
- .set_rate = _clk_parent_set_rate,
- .enable = _clk_enable,
- .enable_reg = SCM_GCCR,
- .enable_shift = SCM_GCCR_CSI_CLK_EN_OFFSET,
- .disable = _clk_disable,
-};
-
-static struct clk mma_clk = {
- .parent = &hclk,
- .round_rate = _clk_parent_round_rate,
- .set_rate = _clk_parent_set_rate,
- .enable = _clk_enable,
- .enable_reg = SCM_GCCR,
- .enable_shift = SCM_GCCR_MMA_CLK_EN_OFFSET,
- .disable = _clk_disable,
-};
-
-static struct clk usbd_clk = {
- .parent = &clk48m,
- .round_rate = _clk_parent_round_rate,
- .set_rate = _clk_parent_set_rate,
- .enable = _clk_enable,
- .enable_reg = SCM_GCCR,
- .enable_shift = SCM_GCCR_USBD_CLK_EN_OFFSET,
- .disable = _clk_disable,
-};
-
-static struct clk gpt_clk = {
- .parent = &perclk[0],
- .round_rate = _clk_parent_round_rate,
- .set_rate = _clk_parent_set_rate,
-};
-
-static struct clk uart_clk = {
- .parent = &perclk[0],
- .round_rate = _clk_parent_round_rate,
- .set_rate = _clk_parent_set_rate,
-};
-
-static struct clk i2c_clk = {
- .parent = &hclk,
- .round_rate = _clk_parent_round_rate,
- .set_rate = _clk_parent_set_rate,
-};
-
-static struct clk spi_clk = {
- .parent = &perclk[1],
- .round_rate = _clk_parent_round_rate,
- .set_rate = _clk_parent_set_rate,
-};
-
-static struct clk sdhc_clk = {
- .parent = &perclk[1],
- .round_rate = _clk_parent_round_rate,
- .set_rate = _clk_parent_set_rate,
-};
-
-static struct clk lcdc_clk = {
- .parent = &perclk[1],
- .round_rate = _clk_parent_round_rate,
- .set_rate = _clk_parent_set_rate,
-};
-
-static struct clk mshc_clk = {
- .parent = &hclk,
- .round_rate = _clk_parent_round_rate,
- .set_rate = _clk_parent_set_rate,
-};
-
-static struct clk ssi_clk = {
- .parent = &perclk[2],
- .round_rate = _clk_parent_round_rate,
- .set_rate = _clk_parent_set_rate,
-};
-
-static struct clk rtc_clk = {
- .parent = &clk32,
-};
-
-#define _REGISTER_CLOCK(d, n, c) \
- { \
- .dev_id = d, \
- .con_id = n, \
- .clk = &c, \
- },
-static struct clk_lookup lookups[] __initdata = {
- _REGISTER_CLOCK(NULL, "dma", dma_clk)
- _REGISTER_CLOCK("mx1-camera.0", NULL, csi_clk)
- _REGISTER_CLOCK(NULL, "mma", mma_clk)
- _REGISTER_CLOCK("imx_udc.0", NULL, usbd_clk)
- _REGISTER_CLOCK(NULL, "gpt", gpt_clk)
- _REGISTER_CLOCK("imx-uart.0", NULL, uart_clk)
- _REGISTER_CLOCK("imx-uart.1", NULL, uart_clk)
- _REGISTER_CLOCK("imx-uart.2", NULL, uart_clk)
- _REGISTER_CLOCK("imx-i2c.0", NULL, i2c_clk)
- _REGISTER_CLOCK("spi_imx.0", NULL, spi_clk)
- _REGISTER_CLOCK("imx-mmc.0", NULL, sdhc_clk)
- _REGISTER_CLOCK("imx-fb.0", NULL, lcdc_clk)
- _REGISTER_CLOCK(NULL, "mshc", mshc_clk)
- _REGISTER_CLOCK(NULL, "ssi", ssi_clk)
- _REGISTER_CLOCK("mxc_rtc.0", NULL, rtc_clk)
-};
-
-int __init mx1_clocks_init(unsigned long fref)
-{
- unsigned int reg;
-
- /* disable clocks we are able to */
- __raw_writel(0, SCM_GCCR);
-
- clk32_rate = fref;
- reg = __raw_readl(CCM_CSCR);
-
- /* detect clock reference for system PLL */
- if (reg & CCM_CSCR_SYSTEM_SEL) {
- prem_clk.parent = &clk16m;
- } else {
- /* ensure that oscillator is disabled */
- reg &= ~(1 << CCM_CSCR_OSC_EN_SHIFT);
- __raw_writel(reg, CCM_CSCR);
- prem_clk.parent = &clk32_premult;
- }
-
- /* detect reference for CLKO */
- reg = (reg & CCM_CSCR_CLKO_MASK) >> CCM_CSCR_CLKO_OFFSET;
- clko_clk.parent = (struct clk *)clko_clocks[reg];
-
- clkdev_add_table(lookups, ARRAY_SIZE(lookups));
-
- clk_enable(&hclk);
- clk_enable(&fclk);
-
- mxc_timer_init(&gpt_clk, IO_ADDRESS(TIM1_BASE_ADDR), TIM1_INT);
-
- return 0;
-}
Copyright © 1996 – 2023 Jason A. Donenfeld. All Rights Reverse Engineered.