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@@ -76,7 +76,7 @@ struct palm_bk3710_udmatiming {
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#include "../ide-timing.h"
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-static long ide_palm_clk;
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+static unsigned ideclk_period; /* in nanoseconds */
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static const struct palm_bk3710_udmatiming palm_bk3710_udmatimings[6] = {
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{160, 240}, /* UDMA Mode 0 */
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@@ -86,8 +86,6 @@ static const struct palm_bk3710_udmatiming palm_bk3710_udmatimings[6] = {
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{85, 60}, /* UDMA Mode 4 */
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};
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-static struct clk *ideclkp;
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-
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static void palm_bk3710_setudmamode(void __iomem *base, unsigned int dev,
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unsigned int mode)
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{
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@@ -97,10 +95,10 @@ static void palm_bk3710_setudmamode(void __iomem *base, unsigned int dev,
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/* DMA Data Setup */
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t0 = DIV_ROUND_UP(palm_bk3710_udmatimings[mode].cycletime,
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- ide_palm_clk) - 1;
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- tenv = DIV_ROUND_UP(20, ide_palm_clk) - 1;
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+ ideclk_period) - 1;
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+ tenv = DIV_ROUND_UP(20, ideclk_period) - 1;
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trp = DIV_ROUND_UP(palm_bk3710_udmatimings[mode].rptime,
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- ide_palm_clk) - 1;
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+ ideclk_period) - 1;
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/* udmatim Register */
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val16 = readw(base + BK3710_UDMATIM) & (dev ? 0xFF0F : 0xFFF0);
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@@ -141,8 +139,8 @@ static void palm_bk3710_setdmamode(void __iomem *base, unsigned int dev,
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cycletime = max_t(int, t->cycle, min_cycle);
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/* DMA Data Setup */
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- t0 = DIV_ROUND_UP(cycletime, ide_palm_clk);
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- td = DIV_ROUND_UP(t->active, ide_palm_clk);
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+ t0 = DIV_ROUND_UP(cycletime, ideclk_period);
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+ td = DIV_ROUND_UP(t->active, ideclk_period);
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tkw = t0 - td - 1;
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td -= 1;
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@@ -168,9 +166,9 @@ static void palm_bk3710_setpiomode(void __iomem *base, ide_drive_t *mate,
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struct ide_timing *t;
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/* PIO Data Setup */
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- t0 = DIV_ROUND_UP(cycletime, ide_palm_clk);
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+ t0 = DIV_ROUND_UP(cycletime, ideclk_period);
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t2 = DIV_ROUND_UP(ide_timing_find_mode(XFER_PIO_0 + mode)->active,
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- ide_palm_clk);
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+ ideclk_period);
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t2i = t0 - t2 - 1;
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t2 -= 1;
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@@ -192,8 +190,8 @@ static void palm_bk3710_setpiomode(void __iomem *base, ide_drive_t *mate,
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/* TASKFILE Setup */
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t = ide_timing_find_mode(XFER_PIO_0 + mode);
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- t0 = DIV_ROUND_UP(t->cyc8b, ide_palm_clk);
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- t2 = DIV_ROUND_UP(t->act8b, ide_palm_clk);
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+ t0 = DIV_ROUND_UP(t->cyc8b, ideclk_period);
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+ t2 = DIV_ROUND_UP(t->act8b, ideclk_period);
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t2i = t0 - t2 - 1;
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t2 -= 1;
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@@ -350,22 +348,22 @@ static const struct ide_port_info __devinitdata palm_bk3710_port_info = {
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static int __devinit palm_bk3710_probe(struct platform_device *pdev)
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{
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- struct clk *clkp;
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+ struct clk *clk;
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struct resource *mem, *irq;
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ide_hwif_t *hwif;
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- unsigned long base;
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+ unsigned long base, rate;
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int i;
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hw_regs_t hw;
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u8 idx[4] = { 0xff, 0xff, 0xff, 0xff };
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- clkp = clk_get(NULL, "IDECLK");
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- if (IS_ERR(clkp))
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+ clk = clk_get(NULL, "IDECLK");
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+ if (IS_ERR(clk))
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return -ENODEV;
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- ideclkp = clkp;
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- clk_enable(ideclkp);
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- ide_palm_clk = clk_get_rate(ideclkp)/100000;
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- ide_palm_clk = (10000/ide_palm_clk) + 1;
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+ clk_enable(clk);
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+ rate = clk_get_rate(clk);
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+ ideclk_period = 1000000000UL / rate;
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+
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/* Register the IDE interface with Linux ATA Interface */
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memset(&hw, 0, sizeof(hw));
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