ARM: msm: Remove unused acpuclock-arm11

This is dead code that isn't initialized or setup (although it is
compiled). Remove it and the data structures it references.

Signed-off-by: Stephen Boyd <sboyd@codeaurora.org>
Signed-off-by: David Brown <davidb@codeaurora.org>

1 files changed, 0 insertions, 525 deletions

diff --git a/arch/arm/mach-msm/acpuclock-arm11.c b/arch/arm/mach-msm/acpuclock-arm11.c
deleted file mode 100644
index 805d4ee53f7e..000000000000
--- a/arch/arm/mach-msm/acpuclock-arm11.c
+++ /dev/null
@@ -1,525 +0,0 @@
-/* arch/arm/mach-msm/acpuclock.c
- *
- * MSM architecture clock driver
- *
- * Copyright (C) 2007 Google, Inc.
- * Copyright (c) 2007 QUALCOMM Incorporated
- * Author: San Mehat <san@android.com>
- *
- * This software is licensed under the terms of the GNU General Public
- * License version 2, as published by the Free Software Foundation, and
- * may be copied, distributed, and modified under those terms.
- *
- * 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.
- *
- */
-
-#include <linux/kernel.h>
-#include <linux/init.h>
-#include <linux/list.h>
-#include <linux/errno.h>
-#include <linux/string.h>
-#include <linux/delay.h>
-#include <linux/clk.h>
-#include <linux/cpufreq.h>
-#include <linux/mutex.h>
-#include <linux/io.h>
-#include <mach/board.h>
-#include <mach/msm_iomap.h>
-
-#include "proc_comm.h"
-#include "acpuclock.h"
-
-
-#define A11S_CLK_CNTL_ADDR (MSM_CSR_BASE + 0x100)
-#define A11S_CLK_SEL_ADDR (MSM_CSR_BASE + 0x104)
-#define A11S_VDD_SVS_PLEVEL_ADDR (MSM_CSR_BASE + 0x124)
-
-/*
- * ARM11 clock configuration for specific ACPU speeds
- */
-
-#define ACPU_PLL_TCXO	-1
-#define ACPU_PLL_0	0
-#define ACPU_PLL_1	1
-#define ACPU_PLL_2	2
-#define ACPU_PLL_3	3
-
-#define PERF_SWITCH_DEBUG 0
-#define PERF_SWITCH_STEP_DEBUG 0
-
-struct clock_state
-{
-	struct clkctl_acpu_speed	*current_speed;
-	struct mutex			lock;
-	uint32_t			acpu_switch_time_us;
-	uint32_t			max_speed_delta_khz;
-	uint32_t			vdd_switch_time_us;
-	unsigned long			power_collapse_khz;
-	unsigned long			wait_for_irq_khz;
-};
-
-static struct clk *ebi1_clk;
-static struct clock_state drv_state = { 0 };
-
-static void __init acpuclk_init(void);
-
-/* MSM7201A Levels 3-6 all correspond to 1.2V, level 7 corresponds to 1.325V. */
-enum {
-	VDD_0 = 0,
-	VDD_1 = 1,
-	VDD_2 = 2,
-	VDD_3 = 3,
-	VDD_4 = 3,
-	VDD_5 = 3,
-	VDD_6 = 3,
-	VDD_7 = 7,
-	VDD_END
-};
-
-struct clkctl_acpu_speed {
-	unsigned int	a11clk_khz;
-	int		pll;
-	unsigned int	a11clk_src_sel;
-	unsigned int	a11clk_src_div;
-	unsigned int	ahbclk_khz;
-	unsigned int	ahbclk_div;
-	int		vdd;
-	unsigned int 	axiclk_khz;
-	unsigned long	lpj; /* loops_per_jiffy */
-/* Index in acpu_freq_tbl[] for steppings. */
-	short		down;
-	short		up;
-};
-
-/*
- * ACPU speed table. Complete table is shown but certain speeds are commented
- * out to optimized speed switching. Initialize loops_per_jiffy to 0.
- *
- * Table stepping up/down is optimized for 256mhz jumps while staying on the
- * same PLL.
- */
-#if (0)
-static struct clkctl_acpu_speed  acpu_freq_tbl[] = {
-	{ 19200, ACPU_PLL_TCXO, 0, 0, 19200, 0, VDD_0, 30720, 0, 0, 8 },
-	{ 61440, ACPU_PLL_0,  4, 3, 61440,  0, VDD_0, 30720,  0, 0, 8 },
-	{ 81920, ACPU_PLL_0,  4, 2, 40960,  1, VDD_0, 61440,  0, 0, 8 },
-	{ 96000, ACPU_PLL_1,  1, 7, 48000,  1, VDD_0, 61440,  0, 0, 9 },
-	{ 122880, ACPU_PLL_0, 4, 1, 61440,  1, VDD_3, 61440,  0, 0, 8 },
-	{ 128000, ACPU_PLL_1, 1, 5, 64000,  1, VDD_3, 61440,  0, 0, 12 },
-	{ 176000, ACPU_PLL_2, 2, 5, 88000,  1, VDD_3, 61440,  0, 0, 11 },
-	{ 192000, ACPU_PLL_1, 1, 3, 64000,  2, VDD_3, 61440,  0, 0, 12 },
-	{ 245760, ACPU_PLL_0, 4, 0, 81920,  2, VDD_4, 61440,  0, 0, 12 },
-	{ 256000, ACPU_PLL_1, 1, 2, 128000, 2, VDD_5, 128000, 0, 0, 12 },
-	{ 264000, ACPU_PLL_2, 2, 3, 88000,  2, VDD_5, 128000, 0, 6, 13 },
-	{ 352000, ACPU_PLL_2, 2, 2, 88000,  3, VDD_5, 128000, 0, 6, 13 },
-	{ 384000, ACPU_PLL_1, 1, 1, 128000, 2, VDD_6, 128000, 0, 5, -1 },
-	{ 528000, ACPU_PLL_2, 2, 1, 132000, 3, VDD_7, 128000, 0, 11, -1 },
-	{ 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0 },
-};
-#else /* Table of freq we currently use. */
-static struct clkctl_acpu_speed  acpu_freq_tbl[] = {
-	{ 19200, ACPU_PLL_TCXO, 0, 0, 19200, 0, VDD_0, 30720, 0, 0, 4 },
-	{ 122880, ACPU_PLL_0, 4, 1, 61440, 1, VDD_3, 61440, 0, 0, 4 },
-	{ 128000, ACPU_PLL_1, 1, 5, 64000, 1, VDD_3, 61440, 0, 0, 6 },
-	{ 176000, ACPU_PLL_2, 2, 5, 88000, 1, VDD_3, 61440, 0, 0, 5 },
-	{ 245760, ACPU_PLL_0, 4, 0, 81920, 2, VDD_4, 61440, 0, 0, 5 },
-	{ 352000, ACPU_PLL_2, 2, 2, 88000, 3, VDD_5, 128000, 0, 3, 7 },
-	{ 384000, ACPU_PLL_1, 1, 1, 128000, 2, VDD_6, 128000, 0, 2, -1 },
-	{ 528000, ACPU_PLL_2, 2, 1, 132000, 3, VDD_7, 128000, 0, 5, -1 },
-	{ 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0 },
-};
-#endif
-
-
-#ifdef CONFIG_CPU_FREQ_TABLE
-static struct cpufreq_frequency_table freq_table[] = {
-	{ 0, 122880 },
-	{ 1, 128000 },
-	{ 2, 245760 },
-	{ 3, 384000 },
-	{ 4, 528000 },
-	{ 5, CPUFREQ_TABLE_END },
-};
-#endif
-
-static int pc_pll_request(unsigned id, unsigned on)
-{
-	int res;
-	on = !!on;
-
-#if PERF_SWITCH_DEBUG
-	if (on)
-		printk(KERN_DEBUG "Enabling PLL %d\n", id);
-	else
-		printk(KERN_DEBUG "Disabling PLL %d\n", id);
-#endif
-
-	res = msm_proc_comm(PCOM_CLKCTL_RPC_PLL_REQUEST, &id, &on);
-	if (res < 0)
-		return res;
-
-#if PERF_SWITCH_DEBUG
-	if (on)
-		printk(KERN_DEBUG "PLL %d enabled\n", id);
-	else
-		printk(KERN_DEBUG "PLL %d disabled\n", id);
-#endif
-	return res;
-}
-
-
-/*----------------------------------------------------------------------------
- * ARM11 'owned' clock control
- *---------------------------------------------------------------------------*/
-
-unsigned long acpuclk_power_collapse(void) {
-	int ret = acpuclk_get_rate();
-	ret *= 1000;
-	if (ret > drv_state.power_collapse_khz)
-		acpuclk_set_rate(drv_state.power_collapse_khz, 1);
-	return ret;
-}
-
-unsigned long acpuclk_get_wfi_rate(void)
-{
-	return drv_state.wait_for_irq_khz;
-}
-
-unsigned long acpuclk_wait_for_irq(void) {
-	int ret = acpuclk_get_rate();
-	ret *= 1000;
-	if (ret > drv_state.wait_for_irq_khz)
-		acpuclk_set_rate(drv_state.wait_for_irq_khz, 1);
-	return ret;
-}
-
-static int acpuclk_set_vdd_level(int vdd)
-{
-	uint32_t current_vdd;
-
-	current_vdd = readl(A11S_VDD_SVS_PLEVEL_ADDR) & 0x07;
-
-#if PERF_SWITCH_DEBUG
-	printk(KERN_DEBUG "acpuclock: Switching VDD from %u -> %d\n",
-	       current_vdd, vdd);
-#endif
-	writel((1 << 7) | (vdd << 3), A11S_VDD_SVS_PLEVEL_ADDR);
-	udelay(drv_state.vdd_switch_time_us);
-	if ((readl(A11S_VDD_SVS_PLEVEL_ADDR) & 0x7) != vdd) {
-#if PERF_SWITCH_DEBUG
-		printk(KERN_ERR "acpuclock: VDD set failed\n");
-#endif
-		return -EIO;
-	}
-
-#if PERF_SWITCH_DEBUG
-	printk(KERN_DEBUG "acpuclock: VDD switched\n");
-#endif
-	return 0;
-}
-
-/* Set proper dividers for the given clock speed. */
-static void acpuclk_set_div(const struct clkctl_acpu_speed *hunt_s) {
-	uint32_t reg_clkctl, reg_clksel, clk_div;
-
-	/* AHB_CLK_DIV */
-	clk_div = (readl(A11S_CLK_SEL_ADDR) >> 1) & 0x03;
-	/*
-	 * If the new clock divider is higher than the previous, then
-	 * program the divider before switching the clock
-	 */
-	if (hunt_s->ahbclk_div > clk_div) {
-		reg_clksel = readl(A11S_CLK_SEL_ADDR);
-		reg_clksel &= ~(0x3 << 1);
-		reg_clksel |= (hunt_s->ahbclk_div << 1);
-		writel(reg_clksel, A11S_CLK_SEL_ADDR);
-	}
-	if ((readl(A11S_CLK_SEL_ADDR) & 0x01) == 0) {
-		/* SRC0 */
-
-		/* Program clock source */
-		reg_clkctl = readl(A11S_CLK_CNTL_ADDR);
-		reg_clkctl &= ~(0x07 << 4);
-		reg_clkctl |= (hunt_s->a11clk_src_sel << 4);
-		writel(reg_clkctl, A11S_CLK_CNTL_ADDR);
-
-		/* Program clock divider */
-		reg_clkctl = readl(A11S_CLK_CNTL_ADDR);
-		reg_clkctl &= ~0xf;
-		reg_clkctl |= hunt_s->a11clk_src_div;
-		writel(reg_clkctl, A11S_CLK_CNTL_ADDR);
-
-		/* Program clock source selection */
-		reg_clksel = readl(A11S_CLK_SEL_ADDR);
-		reg_clksel |= 1; /* CLK_SEL_SRC1NO  == SRC1 */
-		writel(reg_clksel, A11S_CLK_SEL_ADDR);
-	} else {
-		/* SRC1 */
-
-		/* Program clock source */
-		reg_clkctl = readl(A11S_CLK_CNTL_ADDR);
-		reg_clkctl &= ~(0x07 << 12);
-		reg_clkctl |= (hunt_s->a11clk_src_sel << 12);
-		writel(reg_clkctl, A11S_CLK_CNTL_ADDR);
-
-		/* Program clock divider */
-		reg_clkctl = readl(A11S_CLK_CNTL_ADDR);
-		reg_clkctl &= ~(0xf << 8);
-		reg_clkctl |= (hunt_s->a11clk_src_div << 8);
-		writel(reg_clkctl, A11S_CLK_CNTL_ADDR);
-
-		/* Program clock source selection */
-		reg_clksel = readl(A11S_CLK_SEL_ADDR);
-		reg_clksel &= ~1; /* CLK_SEL_SRC1NO  == SRC0 */
-		writel(reg_clksel, A11S_CLK_SEL_ADDR);
-	}
-
-	/*
-	 * If the new clock divider is lower than the previous, then
-	 * program the divider after switching the clock
-	 */
-	if (hunt_s->ahbclk_div < clk_div) {
-		reg_clksel = readl(A11S_CLK_SEL_ADDR);
-		reg_clksel &= ~(0x3 << 1);
-		reg_clksel |= (hunt_s->ahbclk_div << 1);
-		writel(reg_clksel, A11S_CLK_SEL_ADDR);
-	}
-}
-
-int acpuclk_set_rate(unsigned long rate, int for_power_collapse)
-{
-	uint32_t reg_clkctl;
-	struct clkctl_acpu_speed *cur_s, *tgt_s, *strt_s;
-	int rc = 0;
-	unsigned int plls_enabled = 0, pll;
-
-	strt_s = cur_s = drv_state.current_speed;
-
-	WARN_ONCE(cur_s == NULL, "acpuclk_set_rate: not initialized\n");
-	if (cur_s == NULL)
-		return -ENOENT;
-
-	if (rate == (cur_s->a11clk_khz * 1000))
-		return 0;
-
-	for (tgt_s = acpu_freq_tbl; tgt_s->a11clk_khz != 0; tgt_s++) {
-		if (tgt_s->a11clk_khz == (rate / 1000))
-			break;
-	}
-
-	if (tgt_s->a11clk_khz == 0)
-		return -EINVAL;
-
-	/* Choose the highest speed speed at or below 'rate' with same PLL. */
-	if (for_power_collapse && tgt_s->a11clk_khz < cur_s->a11clk_khz) {
-		while (tgt_s->pll != ACPU_PLL_TCXO && tgt_s->pll != cur_s->pll)
-			tgt_s--;
-	}
-
-	if (strt_s->pll != ACPU_PLL_TCXO)
-		plls_enabled |= 1 << strt_s->pll;
-
-	if (!for_power_collapse) {
-		mutex_lock(&drv_state.lock);
-		if (strt_s->pll != tgt_s->pll && tgt_s->pll != ACPU_PLL_TCXO) {
-			rc = pc_pll_request(tgt_s->pll, 1);
-			if (rc < 0) {
-				pr_err("PLL%d enable failed (%d)\n",
-					tgt_s->pll, rc);
-				goto out;
-			}
-			plls_enabled |= 1 << tgt_s->pll;
-		}
-		/* Increase VDD if needed. */
-		if (tgt_s->vdd > cur_s->vdd) {
-			if ((rc = acpuclk_set_vdd_level(tgt_s->vdd)) < 0) {
-				printk(KERN_ERR "Unable to switch ACPU vdd\n");
-				goto out;
-			}
-		}
-	}
-
-	/* Set wait states for CPU between frequency changes */
-	reg_clkctl = readl(A11S_CLK_CNTL_ADDR);
-	reg_clkctl |= (100 << 16); /* set WT_ST_CNT */
-	writel(reg_clkctl, A11S_CLK_CNTL_ADDR);
-
-#if PERF_SWITCH_DEBUG
-	printk(KERN_INFO "acpuclock: Switching from ACPU rate %u -> %u\n",
-	       strt_s->a11clk_khz * 1000, tgt_s->a11clk_khz * 1000);
-#endif
-
-	while (cur_s != tgt_s) {
-		/*
-		 * Always jump to target freq if within 256mhz, regulardless of
-		 * PLL. If differnece is greater, use the predefinied
-		 * steppings in the table.
-		 */
-		int d = abs((int)(cur_s->a11clk_khz - tgt_s->a11clk_khz));
-		if (d > drv_state.max_speed_delta_khz) {
-			/* Step up or down depending on target vs current. */
-			int clk_index = tgt_s->a11clk_khz > cur_s->a11clk_khz ?
-				cur_s->up : cur_s->down;
-			if (clk_index < 0) { /* This should not happen. */
-				printk(KERN_ERR "cur:%u target: %u\n",
-					cur_s->a11clk_khz, tgt_s->a11clk_khz);
-				rc = -EINVAL;
-				goto out;
-			}
-			cur_s = &acpu_freq_tbl[clk_index];
-		} else {
-			cur_s = tgt_s;
-		}
-#if PERF_SWITCH_STEP_DEBUG
-		printk(KERN_DEBUG "%s: STEP khz = %u, pll = %d\n",
-			__FUNCTION__, cur_s->a11clk_khz, cur_s->pll);
-#endif
-		if (!for_power_collapse&& cur_s->pll != ACPU_PLL_TCXO
-		    && !(plls_enabled & (1 << cur_s->pll))) {
-			rc = pc_pll_request(cur_s->pll, 1);
-			if (rc < 0) {
-				pr_err("PLL%d enable failed (%d)\n",
-					cur_s->pll, rc);
-				goto out;
-			}
-			plls_enabled |= 1 << cur_s->pll;
-		}
-
-		acpuclk_set_div(cur_s);
-		drv_state.current_speed = cur_s;
-		/* Re-adjust lpj for the new clock speed. */
-		loops_per_jiffy = cur_s->lpj;
-		udelay(drv_state.acpu_switch_time_us);
-	}
-
-	/* Nothing else to do for power collapse. */
-	if (for_power_collapse)
-		return 0;
-
-	/* Disable PLLs we are not using anymore. */
-	plls_enabled &= ~(1 << tgt_s->pll);
-	for (pll = ACPU_PLL_0; pll <= ACPU_PLL_2; pll++)
-		if (plls_enabled & (1 << pll)) {
-			rc = pc_pll_request(pll, 0);
-			if (rc < 0) {
-				pr_err("PLL%d disable failed (%d)\n", pll, rc);
-				goto out;
-			}
-		}
-
-	/* Change the AXI bus frequency if we can. */
-	if (strt_s->axiclk_khz != tgt_s->axiclk_khz) {
-		rc = clk_set_rate(ebi1_clk, tgt_s->axiclk_khz * 1000);
-		if (rc < 0)
-			pr_err("Setting AXI min rate failed!\n");
-	}
-
-	/* Drop VDD level if we can. */
-	if (tgt_s->vdd < strt_s->vdd) {
-		if (acpuclk_set_vdd_level(tgt_s->vdd) < 0)
-			printk(KERN_ERR "acpuclock: Unable to drop ACPU vdd\n");
-	}
-
-#if PERF_SWITCH_DEBUG
-	printk(KERN_DEBUG "%s: ACPU speed change complete\n", __FUNCTION__);
-#endif
-out:
-	if (!for_power_collapse)
-		mutex_unlock(&drv_state.lock);
-	return rc;
-}
-
-static void __init acpuclk_init(void)
-{
-	struct clkctl_acpu_speed *speed;
-	uint32_t div, sel;
-	int rc;
-
-	/*
-	 * Determine the rate of ACPU clock
-	 */
-
-	if (!(readl(A11S_CLK_SEL_ADDR) & 0x01)) { /* CLK_SEL_SRC1N0 */
-		/* CLK_SRC0_SEL */
-		sel = (readl(A11S_CLK_CNTL_ADDR) >> 12) & 0x7;
-		/* CLK_SRC0_DIV */
-		div = (readl(A11S_CLK_CNTL_ADDR) >> 8) & 0x0f;
-	} else {
-		/* CLK_SRC1_SEL */
-		sel = (readl(A11S_CLK_CNTL_ADDR) >> 4) & 0x07;
-		/* CLK_SRC1_DIV */
-		div = readl(A11S_CLK_CNTL_ADDR) & 0x0f;
-	}
-
-	for (speed = acpu_freq_tbl; speed->a11clk_khz != 0; speed++) {
-		if (speed->a11clk_src_sel == sel
-		 && (speed->a11clk_src_div == div))
-			break;
-	}
-	if (speed->a11clk_khz == 0) {
-		printk(KERN_WARNING "Warning - ACPU clock reports invalid speed\n");
-		return;
-	}
-
-	drv_state.current_speed = speed;
-
-	rc = clk_set_rate(ebi1_clk, speed->axiclk_khz * 1000);
-	if (rc < 0)
-		pr_err("Setting AXI min rate failed!\n");
-
-	printk(KERN_INFO "ACPU running at %d KHz\n", speed->a11clk_khz);
-}
-
-unsigned long acpuclk_get_rate(void)
-{
-	WARN_ONCE(drv_state.current_speed == NULL,
-		  "acpuclk_get_rate: not initialized\n");
-	if (drv_state.current_speed)
-		return drv_state.current_speed->a11clk_khz;
-	else
-		return 0;
-}
-
-uint32_t acpuclk_get_switch_time(void)
-{
-	return drv_state.acpu_switch_time_us;
-}
-
-/*----------------------------------------------------------------------------
- * Clock driver initialization
- *---------------------------------------------------------------------------*/
-
-/* Initialize the lpj field in the acpu_freq_tbl. */
-static void __init lpj_init(void)
-{
-	int i;
-	const struct clkctl_acpu_speed *base_clk = drv_state.current_speed;
-	for (i = 0; acpu_freq_tbl[i].a11clk_khz; i++) {
-		acpu_freq_tbl[i].lpj = cpufreq_scale(loops_per_jiffy,
-						base_clk->a11clk_khz,
-						acpu_freq_tbl[i].a11clk_khz);
-	}
-}
-
-void __init msm_acpu_clock_init(struct msm_acpu_clock_platform_data *clkdata)
-{
-	pr_info("acpu_clock_init()\n");
-
-	ebi1_clk = clk_get(NULL, "ebi1_clk");
-
-	mutex_init(&drv_state.lock);
-	drv_state.acpu_switch_time_us = clkdata->acpu_switch_time_us;
-	drv_state.max_speed_delta_khz = clkdata->max_speed_delta_khz;
-	drv_state.vdd_switch_time_us = clkdata->vdd_switch_time_us;
-	drv_state.power_collapse_khz = clkdata->power_collapse_khz;
-	drv_state.wait_for_irq_khz = clkdata->wait_for_irq_khz;
-	acpuclk_init();
-	lpj_init();
-#ifdef CONFIG_CPU_FREQ_TABLE
-	cpufreq_frequency_table_get_attr(freq_table, smp_processor_id());
-#endif
-}