Merge tag 'davinci-for-v3.9/soc' of git://gitorious.org/linux-davinci…

…/linux-davinci into next/soc

From Sekhar Nori:
DaVinci SoC changes for v3.9

This pull request:

1) Fixes a bug with the way SPI devices were registered on DA850
2) Adds support for DSP clock and resetting the DSP on DA850
3) Fixes checkpatch issue with some existing files.

* tag 'davinci-for-v3.9/soc' of git://gitorious.org/linux-davinci/linux-davinci:
  ARM: davinci: da850: add dsp clock definition
  ARM: davinci: psc: introduce reset API
  ARM: davinci: psc.c: change pr_warning() to pr_warn()
  ARM: davinci: devices-da8xx.c: change pr_warning() to pr_warn()
  ARM: davinci: da8xx_register_spi() should not register SPI board info

Signed-off-by: Olof Johansson <olof@lixom.net>

arch/arm/mach-davinci/board-da830-evm.c

@@ -652,8 +652,13 @@ static __init void da830_evm_init(void)
 	if (ret)
 		pr_warning("da830_evm_init: rtc setup failed: %d\n", ret);
 
-	ret = da8xx_register_spi(0, da830evm_spi_info,
-				 ARRAY_SIZE(da830evm_spi_info));
+	ret = spi_register_board_info(da830evm_spi_info,
+				      ARRAY_SIZE(da830evm_spi_info));
+	if (ret)
+		pr_warn("%s: spi info registration failed: %d\n", __func__,
+			ret);
+
+	ret = da8xx_register_spi_bus(0, ARRAY_SIZE(da830evm_spi_info));
 	if (ret)
 		pr_warning("da830_evm_init: spi 0 registration failed: %d\n",
 			   ret);

arch/arm/mach-davinci/board-da850-evm.c

@@ -1565,8 +1565,13 @@ static __init void da850_evm_init(void)
 
 	da850_vpif_init();
 
-	ret = da8xx_register_spi(1, da850evm_spi_info,
-				 ARRAY_SIZE(da850evm_spi_info));
+	ret = spi_register_board_info(da850evm_spi_info,
+				      ARRAY_SIZE(da850evm_spi_info));
+	if (ret)
+		pr_warn("%s: spi info registration failed: %d\n", __func__,
+			ret);
+
+	ret = da8xx_register_spi_bus(1, ARRAY_SIZE(da850evm_spi_info));
 	if (ret)
 		pr_warning("da850_evm_init: spi 1 registration failed: %d\n",
 				ret);

arch/arm/mach-davinci/board-mityomapl138.c

@@ -529,8 +529,13 @@ static void __init mityomapl138_init(void)
 
 	mityomapl138_setup_nand();
 
-	ret = da8xx_register_spi(1, mityomapl138_spi_flash_info,
-			       ARRAY_SIZE(mityomapl138_spi_flash_info));
+	ret = spi_register_board_info(mityomapl138_spi_flash_info,
+				      ARRAY_SIZE(mityomapl138_spi_flash_info));
+	if (ret)
+		pr_warn("spi info registration failed: %d\n", ret);
+
+	ret = da8xx_register_spi_bus(1,
+				     ARRAY_SIZE(mityomapl138_spi_flash_info));
 	if (ret)
 		pr_warning("spi 1 registration failed: %d\n", ret);
 

arch/arm/mach-davinci/clock.c

@@ -52,6 +52,40 @@ static void __clk_disable(struct clk *clk)
 		__clk_disable(clk->parent);
 }
 
+int davinci_clk_reset(struct clk *clk, bool reset)
+{
+	unsigned long flags;
+
+	if (clk == NULL || IS_ERR(clk))
+		return -EINVAL;
+
+	spin_lock_irqsave(&clockfw_lock, flags);
+	if (clk->flags & CLK_PSC)
+		davinci_psc_reset(clk->gpsc, clk->lpsc, reset);
+	spin_unlock_irqrestore(&clockfw_lock, flags);
+
+	return 0;
+}
+EXPORT_SYMBOL(davinci_clk_reset);
+
+int davinci_clk_reset_assert(struct clk *clk)
+{
+	if (clk == NULL || IS_ERR(clk) || !clk->reset)
+		return -EINVAL;
+
+	return clk->reset(clk, true);
+}
+EXPORT_SYMBOL(davinci_clk_reset_assert);
+
+int davinci_clk_reset_deassert(struct clk *clk)
+{
+	if (clk == NULL || IS_ERR(clk) || !clk->reset)
+		return -EINVAL;
+
+	return clk->reset(clk, false);
+}
+EXPORT_SYMBOL(davinci_clk_reset_deassert);
+
 int clk_enable(struct clk *clk)
 {
 	unsigned long flags;
@@ -535,7 +569,7 @@ int davinci_set_refclk_rate(unsigned long rate)
 }
 
 int __init davinci_clk_init(struct clk_lookup *clocks)
-  {
+{
 	struct clk_lookup *c;
 	struct clk *clk;
 	size_t num_clocks = 0;
@@ -576,6 +610,9 @@ int __init davinci_clk_init(struct clk_lookup *clocks)
 		if (clk->lpsc)
 			clk->flags |= CLK_PSC;
 
+		if (clk->flags & PSC_LRST)
+			clk->reset = davinci_clk_reset;
+
 		clk_register(clk);
 		num_clocks++;
 

arch/arm/mach-davinci/clock.h

@@ -103,6 +103,7 @@ struct clk {
 	unsigned long (*recalc) (struct clk *);
 	int (*set_rate) (struct clk *clk, unsigned long rate);
 	int (*round_rate) (struct clk *clk, unsigned long rate);
+	int (*reset) (struct clk *clk, bool reset);
 };
 
 /* Clock flags: SoC-specific flags start at BIT(16) */
@@ -112,6 +113,7 @@ struct clk {
 #define PRE_PLL			BIT(4) /* source is before PLL mult/div */
 #define PSC_SWRSTDISABLE	BIT(5) /* Disable state is SwRstDisable */
 #define PSC_FORCE		BIT(6) /* Force module state transtition */
+#define PSC_LRST		BIT(8) /* Use local reset on enable/disable */
 
 #define CLK(dev, con, ck) 	\
 	{			\
@@ -126,6 +128,7 @@ int davinci_set_pllrate(struct pll_data *pll, unsigned int prediv,
 int davinci_set_sysclk_rate(struct clk *clk, unsigned long rate);
 int davinci_set_refclk_rate(unsigned long rate);
 int davinci_simple_set_rate(struct clk *clk, unsigned long rate);
+int davinci_clk_reset(struct clk *clk, bool reset);
 
 extern struct platform_device davinci_wdt_device;
 extern void davinci_watchdog_reset(struct platform_device *);

arch/arm/mach-davinci/da850.c

@@ -76,6 +76,13 @@ static struct clk pll0_aux_clk = {
 	.flags		= CLK_PLL | PRE_PLL,
 };
 
+static struct clk pll0_sysclk1 = {
+	.name		= "pll0_sysclk1",
+	.parent		= &pll0_clk,
+	.flags		= CLK_PLL,
+	.div_reg	= PLLDIV1,
+};
+
 static struct clk pll0_sysclk2 = {
 	.name		= "pll0_sysclk2",
 	.parent		= &pll0_clk,
@@ -368,10 +375,19 @@ static struct clk sata_clk = {
 	.flags		= PSC_FORCE,
 };
 
+static struct clk dsp_clk = {
+	.name		= "dsp",
+	.parent		= &pll0_sysclk1,
+	.domain		= DAVINCI_GPSC_DSPDOMAIN,
+	.lpsc		= DA8XX_LPSC0_GEM,
+	.flags		= PSC_LRST | PSC_FORCE,
+};
+
 static struct clk_lookup da850_clks[] = {
 	CLK(NULL,		"ref",		&ref_clk),
 	CLK(NULL,		"pll0",		&pll0_clk),
 	CLK(NULL,		"pll0_aux",	&pll0_aux_clk),
+	CLK(NULL,		"pll0_sysclk1",	&pll0_sysclk1),
 	CLK(NULL,		"pll0_sysclk2",	&pll0_sysclk2),
 	CLK(NULL,		"pll0_sysclk3",	&pll0_sysclk3),
 	CLK(NULL,		"pll0_sysclk4",	&pll0_sysclk4),
@@ -413,6 +429,7 @@ static struct clk_lookup da850_clks[] = {
 	CLK("spi_davinci.1",	NULL,		&spi1_clk),
 	CLK("vpif",		NULL,		&vpif_clk),
 	CLK("ahci",		NULL,		&sata_clk),
+	CLK("davinci-rproc.0",	NULL,		&dsp_clk),
 	CLK(NULL,		NULL,		NULL),
 };
 

arch/arm/mach-davinci/devices-da8xx.c

@@ -751,7 +751,7 @@ void __iomem * __init da8xx_get_mem_ctlr(void)
 
 	da8xx_ddr2_ctlr_base = ioremap(DA8XX_DDR2_CTL_BASE, SZ_32K);
 	if (!da8xx_ddr2_ctlr_base)
-		pr_warning("%s: Unable to map DDR2 controller",	__func__);
+		pr_warn("%s: Unable to map DDR2 controller", __func__);
 
 	return da8xx_ddr2_ctlr_base;
 }
@@ -832,7 +832,7 @@ static struct resource da8xx_spi1_resources[] = {
 	},
 };
 
-struct davinci_spi_platform_data da8xx_spi_pdata[] = {
+static struct davinci_spi_platform_data da8xx_spi_pdata[] = {
 	[0] = {
 		.version	= SPI_VERSION_2,
 		.intr_line	= 1,
@@ -866,20 +866,12 @@ static struct platform_device da8xx_spi_device[] = {
 	},
 };
 
-int __init da8xx_register_spi(int instance, const struct spi_board_info *info,
-			      unsigned len)
+int __init da8xx_register_spi_bus(int instance, unsigned num_chipselect)
 {
-	int ret;
-
 	if (instance < 0 || instance > 1)
 		return -EINVAL;
 
-	ret = spi_register_board_info(info, len);
-	if (ret)
-		pr_warning("%s: failed to register board info for spi %d :"
-			   " %d\n", __func__, instance, ret);
-
-	da8xx_spi_pdata[instance].num_chipselect = len;
+	da8xx_spi_pdata[instance].num_chipselect = num_chipselect;
 
 	if (instance == 1 && cpu_is_davinci_da850()) {
 		da8xx_spi1_resources[0].start = DA850_SPI1_BASE;

arch/arm/mach-davinci/include/mach/clock.h

@@ -18,4 +18,7 @@ struct clk;
 extern int clk_register(struct clk *clk);
 extern void clk_unregister(struct clk *clk);
 
+int davinci_clk_reset_assert(struct clk *c);
+int davinci_clk_reset_deassert(struct clk *c);
+
 #endif

arch/arm/mach-davinci/include/mach/da8xx.h

@@ -82,8 +82,7 @@ void __init da850_init(void);
 int da830_register_edma(struct edma_rsv_info *rsv);
 int da850_register_edma(struct edma_rsv_info *rsv[2]);
 int da8xx_register_i2c(int instance, struct davinci_i2c_platform_data *pdata);
-int da8xx_register_spi(int instance,
-		const struct spi_board_info *info, unsigned len);
+int da8xx_register_spi_bus(int instance, unsigned num_chipselect);
 int da8xx_register_watchdog(void);
 int da8xx_register_usb20(unsigned mA, unsigned potpgt);
 int da8xx_register_usb11(struct da8xx_ohci_root_hub *pdata);
@@ -110,7 +109,6 @@ extern struct platform_device da8xx_serial_device;
 extern struct emac_platform_data da8xx_emac_pdata;
 extern struct da8xx_lcdc_platform_data sharp_lcd035q3dg01_pdata;
 extern struct da8xx_lcdc_platform_data sharp_lk043t1dg01_pdata;
-extern struct davinci_spi_platform_data da8xx_spi_pdata[];
 
 extern struct platform_device da8xx_wdt_device;
 

arch/arm/mach-davinci/include/mach/psc.h

@@ -246,13 +246,16 @@
 
 #define MDSTAT_STATE_MASK	0x3f
 #define PDSTAT_STATE_MASK	0x1f
+#define MDCTL_LRST		BIT(8)
 #define MDCTL_FORCE		BIT(31)
 #define PDCTL_NEXT		BIT(0)
 #define PDCTL_EPCGOOD		BIT(8)
 
 #ifndef __ASSEMBLER__
 
 extern int davinci_psc_is_clk_active(unsigned int ctlr, unsigned int id);
+extern void davinci_psc_reset(unsigned int ctlr, unsigned int id,
+		bool reset);
 extern void davinci_psc_config(unsigned int domain, unsigned int ctlr,
 		unsigned int id, bool enable, u32 flags);
 

arch/arm/mach-davinci/psc.c

@@ -35,7 +35,7 @@ int __init davinci_psc_is_clk_active(unsigned int ctlr, unsigned int id)
 	struct davinci_soc_info *soc_info = &davinci_soc_info;
 
 	if (!soc_info->psc_bases || (ctlr >= soc_info->psc_bases_num)) {
-		pr_warning("PSC: Bad psc data: 0x%x[%d]\n",
+		pr_warn("PSC: Bad psc data: 0x%x[%d]\n",
 				(int)soc_info->psc_bases, ctlr);
 		return 0;
 	}
@@ -48,6 +48,31 @@ int __init davinci_psc_is_clk_active(unsigned int ctlr, unsigned int id)
 	return mdstat & BIT(12);
 }
 
+/* Control "reset" line associated with PSC domain */
+void davinci_psc_reset(unsigned int ctlr, unsigned int id, bool reset)
+{
+	u32 mdctl;
+	void __iomem *psc_base;
+	struct davinci_soc_info *soc_info = &davinci_soc_info;
+
+	if (!soc_info->psc_bases || (ctlr >= soc_info->psc_bases_num)) {
+		pr_warn("PSC: Bad psc data: 0x%x[%d]\n",
+				(int)soc_info->psc_bases, ctlr);
+		return;
+	}
+
+	psc_base = ioremap(soc_info->psc_bases[ctlr], SZ_4K);
+
+	mdctl = readl(psc_base + MDCTL + 4 * id);
+	if (reset)
+		mdctl &= ~MDCTL_LRST;
+	else
+		mdctl |= MDCTL_LRST;
+	writel(mdctl, psc_base + MDCTL + 4 * id);
+
+	iounmap(psc_base);
+}
+
 /* Enable or disable a PSC domain */
 void davinci_psc_config(unsigned int domain, unsigned int ctlr,
 		unsigned int id, bool enable, u32 flags)
@@ -58,7 +83,7 @@ void davinci_psc_config(unsigned int domain, unsigned int ctlr,
 	u32 next_state = PSC_STATE_ENABLE;
 
 	if (!soc_info->psc_bases || (ctlr >= soc_info->psc_bases_num)) {
-		pr_warning("PSC: Bad psc data: 0x%x[%d]\n",
+		pr_warn("PSC: Bad psc data: 0x%x[%d]\n",
 				(int)soc_info->psc_bases, ctlr);
 		return;
 	}