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-rw-r--r--arch/arm/mach-imx/clk-pllv2.c266
1 files changed, 0 insertions, 266 deletions
diff --git a/arch/arm/mach-imx/clk-pllv2.c b/arch/arm/mach-imx/clk-pllv2.c
deleted file mode 100644
index 20889d59b..000000000
--- a/arch/arm/mach-imx/clk-pllv2.c
+++ /dev/null
@@ -1,266 +0,0 @@
-#include <linux/kernel.h>
-#include <linux/clk.h>
-#include <linux/io.h>
-#include <linux/errno.h>
-#include <linux/delay.h>
-#include <linux/slab.h>
-#include <linux/err.h>
-
-#include <asm/div64.h>
-
-#include "clk.h"
-
-#define to_clk_pllv2(clk) (container_of(clk, struct clk_pllv2, clk))
-
-/* PLL Register Offsets */
-#define MXC_PLL_DP_CTL 0x00
-#define MXC_PLL_DP_CONFIG 0x04
-#define MXC_PLL_DP_OP 0x08
-#define MXC_PLL_DP_MFD 0x0C
-#define MXC_PLL_DP_MFN 0x10
-#define MXC_PLL_DP_MFNMINUS 0x14
-#define MXC_PLL_DP_MFNPLUS 0x18
-#define MXC_PLL_DP_HFS_OP 0x1C
-#define MXC_PLL_DP_HFS_MFD 0x20
-#define MXC_PLL_DP_HFS_MFN 0x24
-#define MXC_PLL_DP_MFN_TOGC 0x28
-#define MXC_PLL_DP_DESTAT 0x2c
-
-/* PLL Register Bit definitions */
-#define MXC_PLL_DP_CTL_MUL_CTRL 0x2000
-#define MXC_PLL_DP_CTL_DPDCK0_2_EN 0x1000
-#define MXC_PLL_DP_CTL_DPDCK0_2_OFFSET 12
-#define MXC_PLL_DP_CTL_ADE 0x800
-#define MXC_PLL_DP_CTL_REF_CLK_DIV 0x400
-#define MXC_PLL_DP_CTL_REF_CLK_SEL_MASK (3 << 8)
-#define MXC_PLL_DP_CTL_REF_CLK_SEL_OFFSET 8
-#define MXC_PLL_DP_CTL_HFSM 0x80
-#define MXC_PLL_DP_CTL_PRE 0x40
-#define MXC_PLL_DP_CTL_UPEN 0x20
-#define MXC_PLL_DP_CTL_RST 0x10
-#define MXC_PLL_DP_CTL_RCP 0x8
-#define MXC_PLL_DP_CTL_PLM 0x4
-#define MXC_PLL_DP_CTL_BRM0 0x2
-#define MXC_PLL_DP_CTL_LRF 0x1
-
-#define MXC_PLL_DP_CONFIG_BIST 0x8
-#define MXC_PLL_DP_CONFIG_SJC_CE 0x4
-#define MXC_PLL_DP_CONFIG_AREN 0x2
-#define MXC_PLL_DP_CONFIG_LDREQ 0x1
-
-#define MXC_PLL_DP_OP_MFI_OFFSET 4
-#define MXC_PLL_DP_OP_MFI_MASK (0xF << 4)
-#define MXC_PLL_DP_OP_PDF_OFFSET 0
-#define MXC_PLL_DP_OP_PDF_MASK 0xF
-
-#define MXC_PLL_DP_MFD_OFFSET 0
-#define MXC_PLL_DP_MFD_MASK 0x07FFFFFF
-
-#define MXC_PLL_DP_MFN_OFFSET 0x0
-#define MXC_PLL_DP_MFN_MASK 0x07FFFFFF
-
-#define MXC_PLL_DP_MFN_TOGC_TOG_DIS (1 << 17)
-#define MXC_PLL_DP_MFN_TOGC_TOG_EN (1 << 16)
-#define MXC_PLL_DP_MFN_TOGC_CNT_OFFSET 0x0
-#define MXC_PLL_DP_MFN_TOGC_CNT_MASK 0xFFFF
-
-#define MXC_PLL_DP_DESTAT_TOG_SEL (1 << 31)
-#define MXC_PLL_DP_DESTAT_MFN 0x07FFFFFF
-
-#define MAX_DPLL_WAIT_TRIES 1000 /* 1000 * udelay(1) = 1ms */
-
-struct clk_pllv2 {
- struct clk_hw hw;
- void __iomem *base;
-};
-
-static unsigned long __clk_pllv2_recalc_rate(unsigned long parent_rate,
- u32 dp_ctl, u32 dp_op, u32 dp_mfd, u32 dp_mfn)
-{
- long mfi, mfn, mfd, pdf, ref_clk, mfn_abs;
- unsigned long dbl;
- s64 temp;
-
- dbl = dp_ctl & MXC_PLL_DP_CTL_DPDCK0_2_EN;
-
- pdf = dp_op & MXC_PLL_DP_OP_PDF_MASK;
- mfi = (dp_op & MXC_PLL_DP_OP_MFI_MASK) >> MXC_PLL_DP_OP_MFI_OFFSET;
- mfi = (mfi <= 5) ? 5 : mfi;
- mfd = dp_mfd & MXC_PLL_DP_MFD_MASK;
- mfn = mfn_abs = dp_mfn & MXC_PLL_DP_MFN_MASK;
- /* Sign extend to 32-bits */
- if (mfn >= 0x04000000) {
- mfn |= 0xFC000000;
- mfn_abs = -mfn;
- }
-
- ref_clk = 2 * parent_rate;
- if (dbl != 0)
- ref_clk *= 2;
-
- ref_clk /= (pdf + 1);
- temp = (u64) ref_clk * mfn_abs;
- do_div(temp, mfd + 1);
- if (mfn < 0)
- temp = -temp;
- temp = (ref_clk * mfi) + temp;
-
- return temp;
-}
-
-static unsigned long clk_pllv2_recalc_rate(struct clk_hw *hw,
- unsigned long parent_rate)
-{
- u32 dp_op, dp_mfd, dp_mfn, dp_ctl;
- void __iomem *pllbase;
- struct clk_pllv2 *pll = to_clk_pllv2(hw);
-
- pllbase = pll->base;
-
- dp_ctl = __raw_readl(pllbase + MXC_PLL_DP_CTL);
- dp_op = __raw_readl(pllbase + MXC_PLL_DP_OP);
- dp_mfd = __raw_readl(pllbase + MXC_PLL_DP_MFD);
- dp_mfn = __raw_readl(pllbase + MXC_PLL_DP_MFN);
-
- return __clk_pllv2_recalc_rate(parent_rate, dp_ctl, dp_op, dp_mfd, dp_mfn);
-}
-
-static int __clk_pllv2_set_rate(unsigned long rate, unsigned long parent_rate,
- u32 *dp_op, u32 *dp_mfd, u32 *dp_mfn)
-{
- u32 reg;
- long mfi, pdf, mfn, mfd = 999999;
- s64 temp64;
- unsigned long quad_parent_rate;
-
- quad_parent_rate = 4 * parent_rate;
- pdf = mfi = -1;
- while (++pdf < 16 && mfi < 5)
- mfi = rate * (pdf+1) / quad_parent_rate;
- if (mfi > 15)
- return -EINVAL;
- pdf--;
-
- temp64 = rate * (pdf + 1) - quad_parent_rate * mfi;
- do_div(temp64, quad_parent_rate / 1000000);
- mfn = (long)temp64;
-
- reg = mfi << 4 | pdf;
-
- *dp_op = reg;
- *dp_mfd = mfd;
- *dp_mfn = mfn;
-
- return 0;
-}
-
-static int clk_pllv2_set_rate(struct clk_hw *hw, unsigned long rate,
- unsigned long parent_rate)
-{
- struct clk_pllv2 *pll = to_clk_pllv2(hw);
- void __iomem *pllbase;
- u32 dp_ctl, dp_op, dp_mfd, dp_mfn;
- int ret;
-
- pllbase = pll->base;
-
-
- ret = __clk_pllv2_set_rate(rate, parent_rate, &dp_op, &dp_mfd, &dp_mfn);
- if (ret)
- return ret;
-
- dp_ctl = __raw_readl(pllbase + MXC_PLL_DP_CTL);
- /* use dpdck0_2 */
- __raw_writel(dp_ctl | 0x1000L, pllbase + MXC_PLL_DP_CTL);
-
- __raw_writel(dp_op, pllbase + MXC_PLL_DP_OP);
- __raw_writel(dp_mfd, pllbase + MXC_PLL_DP_MFD);
- __raw_writel(dp_mfn, pllbase + MXC_PLL_DP_MFN);
-
- return 0;
-}
-
-static long clk_pllv2_round_rate(struct clk_hw *hw, unsigned long rate,
- unsigned long *prate)
-{
- u32 dp_op, dp_mfd, dp_mfn;
-
- __clk_pllv2_set_rate(rate, *prate, &dp_op, &dp_mfd, &dp_mfn);
- return __clk_pllv2_recalc_rate(*prate, MXC_PLL_DP_CTL_DPDCK0_2_EN,
- dp_op, dp_mfd, dp_mfn);
-}
-
-static int clk_pllv2_prepare(struct clk_hw *hw)
-{
- struct clk_pllv2 *pll = to_clk_pllv2(hw);
- u32 reg;
- void __iomem *pllbase;
- int i = 0;
-
- pllbase = pll->base;
- reg = __raw_readl(pllbase + MXC_PLL_DP_CTL) | MXC_PLL_DP_CTL_UPEN;
- __raw_writel(reg, pllbase + MXC_PLL_DP_CTL);
-
- /* Wait for lock */
- do {
- reg = __raw_readl(pllbase + MXC_PLL_DP_CTL);
- if (reg & MXC_PLL_DP_CTL_LRF)
- break;
-
- udelay(1);
- } while (++i < MAX_DPLL_WAIT_TRIES);
-
- if (i == MAX_DPLL_WAIT_TRIES) {
- pr_err("MX5: pll locking failed\n");
- return -EINVAL;
- }
-
- return 0;
-}
-
-static void clk_pllv2_unprepare(struct clk_hw *hw)
-{
- struct clk_pllv2 *pll = to_clk_pllv2(hw);
- u32 reg;
- void __iomem *pllbase;
-
- pllbase = pll->base;
- reg = __raw_readl(pllbase + MXC_PLL_DP_CTL) & ~MXC_PLL_DP_CTL_UPEN;
- __raw_writel(reg, pllbase + MXC_PLL_DP_CTL);
-}
-
-static struct clk_ops clk_pllv2_ops = {
- .prepare = clk_pllv2_prepare,
- .unprepare = clk_pllv2_unprepare,
- .recalc_rate = clk_pllv2_recalc_rate,
- .round_rate = clk_pllv2_round_rate,
- .set_rate = clk_pllv2_set_rate,
-};
-
-struct clk *imx_clk_pllv2(const char *name, const char *parent,
- void __iomem *base)
-{
- struct clk_pllv2 *pll;
- struct clk *clk;
- struct clk_init_data init;
-
- pll = kzalloc(sizeof(*pll), GFP_KERNEL);
- if (!pll)
- return ERR_PTR(-ENOMEM);
-
- pll->base = base;
-
- init.name = name;
- init.ops = &clk_pllv2_ops;
- init.flags = 0;
- init.parent_names = &parent;
- init.num_parents = 1;
-
- pll->hw.init = &init;
-
- clk = clk_register(NULL, &pll->hw);
- if (IS_ERR(clk))
- kfree(pll);
-
- return clk;
-}
generated by cgit v1.2.3-54-g00ecf (git 2.45.2) at 2024-11-16 15:09:30 +0000