[RFC PATCH 19/50] ARM: at91: move at91sam9rl SoC to new at91 clk implem

[Boris BREZILLON]

This patch removes all references to the old at91 clks implementation and
make use of the new at91 clk implem for at91sam9rl SoC.

All dt specific lookups are removed (handled in clk device tree binding).

Signed-off-by: Boris BREZILLON <b.brezillon@xxxxxxxxxxx>
---
 arch/arm/mach-at91/at91sam9rl.c |  512 ++++++++++++++++++++++++---------------
 1 file changed, 323 insertions(+), 189 deletions(-)

diff --git a/arch/arm/mach-at91/at91sam9rl.c b/arch/arm/mach-at91/at91sam9rl.c
index 6fbda1a..a066685 100644
--- a/arch/arm/mach-at91/at91sam9rl.c
+++ b/arch/arm/mach-at91/at91sam9rl.c
@@ -25,7 +25,6 @@
 #include "at91_rstc.h"
 #include "soc.h"
 #include "generic.h"
-#include "clock.h"
 #include "sam9_smc.h"
 
 /* --------------------------------------------------------------------
@@ -35,207 +34,342 @@
 /*
  * The peripheral clocks.
  */
-static struct clk pioA_clk = {
-	.name		= "pioA_clk",
-	.pmc_mask	= 1 << AT91SAM9RL_ID_PIOA,
-	.type		= CLK_TYPE_PERIPHERAL,
-};
-static struct clk pioB_clk = {
-	.name		= "pioB_clk",
-	.pmc_mask	= 1 << AT91SAM9RL_ID_PIOB,
-	.type		= CLK_TYPE_PERIPHERAL,
-};
-static struct clk pioC_clk = {
-	.name		= "pioC_clk",
-	.pmc_mask	= 1 << AT91SAM9RL_ID_PIOC,
-	.type		= CLK_TYPE_PERIPHERAL,
-};
-static struct clk pioD_clk = {
-	.name		= "pioD_clk",
-	.pmc_mask	= 1 << AT91SAM9RL_ID_PIOD,
-	.type		= CLK_TYPE_PERIPHERAL,
-};
-static struct clk usart0_clk = {
-	.name		= "usart0_clk",
-	.pmc_mask	= 1 << AT91SAM9RL_ID_US0,
-	.type		= CLK_TYPE_PERIPHERAL,
-};
-static struct clk usart1_clk = {
-	.name		= "usart1_clk",
-	.pmc_mask	= 1 << AT91SAM9RL_ID_US1,
-	.type		= CLK_TYPE_PERIPHERAL,
-};
-static struct clk usart2_clk = {
-	.name		= "usart2_clk",
-	.pmc_mask	= 1 << AT91SAM9RL_ID_US2,
-	.type		= CLK_TYPE_PERIPHERAL,
-};
-static struct clk usart3_clk = {
-	.name		= "usart3_clk",
-	.pmc_mask	= 1 << AT91SAM9RL_ID_US3,
-	.type		= CLK_TYPE_PERIPHERAL,
-};
-static struct clk mmc_clk = {
-	.name		= "mci_clk",
-	.pmc_mask	= 1 << AT91SAM9RL_ID_MCI,
-	.type		= CLK_TYPE_PERIPHERAL,
-};
-static struct clk twi0_clk = {
-	.name		= "twi0_clk",
-	.pmc_mask	= 1 << AT91SAM9RL_ID_TWI0,
-	.type		= CLK_TYPE_PERIPHERAL,
-};
-static struct clk twi1_clk = {
-	.name		= "twi1_clk",
-	.pmc_mask	= 1 << AT91SAM9RL_ID_TWI1,
-	.type		= CLK_TYPE_PERIPHERAL,
-};
-static struct clk spi_clk = {
-	.name		= "spi_clk",
-	.pmc_mask	= 1 << AT91SAM9RL_ID_SPI,
-	.type		= CLK_TYPE_PERIPHERAL,
-};
-static struct clk ssc0_clk = {
-	.name		= "ssc0_clk",
-	.pmc_mask	= 1 << AT91SAM9RL_ID_SSC0,
-	.type		= CLK_TYPE_PERIPHERAL,
-};
-static struct clk ssc1_clk = {
-	.name		= "ssc1_clk",
-	.pmc_mask	= 1 << AT91SAM9RL_ID_SSC1,
-	.type		= CLK_TYPE_PERIPHERAL,
-};
-static struct clk tc0_clk = {
-	.name		= "tc0_clk",
-	.pmc_mask	= 1 << AT91SAM9RL_ID_TC0,
-	.type		= CLK_TYPE_PERIPHERAL,
-};
-static struct clk tc1_clk = {
-	.name		= "tc1_clk",
-	.pmc_mask	= 1 << AT91SAM9RL_ID_TC1,
-	.type		= CLK_TYPE_PERIPHERAL,
-};
-static struct clk tc2_clk = {
-	.name		= "tc2_clk",
-	.pmc_mask	= 1 << AT91SAM9RL_ID_TC2,
-	.type		= CLK_TYPE_PERIPHERAL,
-};
-static struct clk pwm_clk = {
-	.name		= "pwm_clk",
-	.pmc_mask	= 1 << AT91SAM9RL_ID_PWMC,
-	.type		= CLK_TYPE_PERIPHERAL,
-};
-static struct clk tsc_clk = {
-	.name		= "tsc_clk",
-	.pmc_mask	= 1 << AT91SAM9RL_ID_TSC,
-	.type		= CLK_TYPE_PERIPHERAL,
-};
-static struct clk dma_clk = {
-	.name		= "dma_clk",
-	.pmc_mask	= 1 << AT91SAM9RL_ID_DMA,
-	.type		= CLK_TYPE_PERIPHERAL,
-};
-static struct clk udphs_clk = {
-	.name		= "udphs_clk",
-	.pmc_mask	= 1 << AT91SAM9RL_ID_UDPHS,
-	.type		= CLK_TYPE_PERIPHERAL,
-};
-static struct clk lcdc_clk = {
-	.name		= "lcdc_clk",
-	.pmc_mask	= 1 << AT91SAM9RL_ID_LCDC,
-	.type		= CLK_TYPE_PERIPHERAL,
-};
-static struct clk ac97_clk = {
-	.name		= "ac97_clk",
-	.pmc_mask	= 1 << AT91SAM9RL_ID_AC97C,
-	.type		= CLK_TYPE_PERIPHERAL,
-};
-
-static struct clk *periph_clocks[] __initdata = {
-	&pioA_clk,
-	&pioB_clk,
-	&pioC_clk,
-	&pioD_clk,
-	&usart0_clk,
-	&usart1_clk,
-	&usart2_clk,
-	&usart3_clk,
-	&mmc_clk,
-	&twi0_clk,
-	&twi1_clk,
-	&spi_clk,
-	&ssc0_clk,
-	&ssc1_clk,
-	&tc0_clk,
-	&tc1_clk,
-	&tc2_clk,
-	&pwm_clk,
-	&tsc_clk,
-	&dma_clk,
-	&udphs_clk,
-	&lcdc_clk,
-	&ac97_clk,
-	// irq0
-};
-
-static struct clk_lookup periph_clocks_lookups[] = {
-	CLKDEV_CON_DEV_ID("hclk", "at91sam9rl-lcdfb.0", &lcdc_clk),
-	CLKDEV_CON_DEV_ID("hclk", "atmel_usba_udc", &utmi_clk),
-	CLKDEV_CON_DEV_ID("pclk", "atmel_usba_udc", &udphs_clk),
-	CLKDEV_CON_DEV_ID("t0_clk", "atmel_tcb.0", &tc0_clk),
-	CLKDEV_CON_DEV_ID("t1_clk", "atmel_tcb.0", &tc1_clk),
-	CLKDEV_CON_DEV_ID("t2_clk", "atmel_tcb.0", &tc2_clk),
-	CLKDEV_CON_DEV_ID("pclk", "at91rm9200_ssc.0", &ssc0_clk),
-	CLKDEV_CON_DEV_ID("pclk", "at91rm9200_ssc.1", &ssc1_clk),
-	CLKDEV_CON_DEV_ID("pclk", "fffc0000.ssc", &ssc0_clk),
-	CLKDEV_CON_DEV_ID("pclk", "fffc4000.ssc", &ssc1_clk),
-	CLKDEV_CON_DEV_ID(NULL, "i2c-at91sam9g20.0", &twi0_clk),
-	CLKDEV_CON_DEV_ID(NULL, "i2c-at91sam9g20.1", &twi1_clk),
-	CLKDEV_CON_ID("pioA", &pioA_clk),
-	CLKDEV_CON_ID("pioB", &pioB_clk),
-	CLKDEV_CON_ID("pioC", &pioC_clk),
-	CLKDEV_CON_ID("pioD", &pioD_clk),
-};
-
-static struct clk_lookup usart_clocks_lookups[] = {
-	CLKDEV_CON_DEV_ID("usart", "atmel_usart.0", &mck),
-	CLKDEV_CON_DEV_ID("usart", "atmel_usart.1", &usart0_clk),
-	CLKDEV_CON_DEV_ID("usart", "atmel_usart.2", &usart1_clk),
-	CLKDEV_CON_DEV_ID("usart", "atmel_usart.3", &usart2_clk),
-	CLKDEV_CON_DEV_ID("usart", "atmel_usart.4", &usart3_clk),
+static struct clk_lookup pioA_clk_lookup[] = {
+	CLKDEV_INIT(NULL, "pioA_clk", NULL),
+	CLKDEV_INIT(NULL, "pioA", NULL),
 };
 
+static struct clk_lookup pioB_clk_lookup[] = {
+	CLKDEV_INIT(NULL, "pioB_clk", NULL),
+	CLKDEV_INIT(NULL, "pioB", NULL),
+};
+
+static struct clk_lookup pioC_clk_lookup[] = {
+	CLKDEV_INIT(NULL, "pioC_clk", NULL),
+	CLKDEV_INIT(NULL, "pioC", NULL),
+};
+
+static struct clk_lookup pioD_clk_lookup[] = {
+	CLKDEV_INIT(NULL, "pioD_clk", NULL),
+	CLKDEV_INIT(NULL, "pioD", NULL),
+};
+
+static struct clk_lookup usart0_clk_lookup[] = {
+	CLKDEV_INIT(NULL, "usart0_clk", NULL),
+	CLKDEV_INIT("atmel_usart.1", "usart", NULL),
+};
+
+static struct clk_lookup usart1_clk_lookup[] = {
+	CLKDEV_INIT(NULL, "usart1_clk", NULL),
+	CLKDEV_INIT("atmel_usart.2", "usart", NULL),
+};
+
+static struct clk_lookup usart2_clk_lookup[] = {
+	CLKDEV_INIT(NULL, "usart2_clk", NULL),
+	CLKDEV_INIT("atmel_usart.3", "usart", NULL),
+};
+
+static struct clk_lookup usart3_clk_lookup[] = {
+	CLKDEV_INIT(NULL, "usart3_clk", NULL),
+	CLKDEV_INIT("atmel_usart.4", "usart", NULL),
+};
+
+static struct clk_lookup mci_clk_lookup[] = {
+	CLKDEV_INIT(NULL, "mci_clk", NULL),
+};
+
+static struct clk_lookup twi0_clk_lookup[] = {
+	CLKDEV_INIT(NULL, "twi0_clk", NULL),
+	CLKDEV_INIT("i2c-at91sam9g20.0", NULL, NULL),
+};
+
+static struct clk_lookup twi1_clk_lookup[] = {
+	CLKDEV_INIT(NULL, "twi1_clk", NULL),
+	CLKDEV_INIT("i2c-at91sam9g20.1", NULL, NULL),
+};
+
+static struct clk_lookup spi_clk_lookup[] = {
+	CLKDEV_INIT(NULL, "spi_clk", NULL),
+};
+
+static struct clk_lookup ssc0_clk_lookup[] = {
+	CLKDEV_INIT(NULL, "ssc0_clk", NULL),
+	CLKDEV_INIT("at91rm9200_ssc.0", "pclk", NULL),
+};
+
+static struct clk_lookup ssc1_clk_lookup[] = {
+	CLKDEV_INIT(NULL, "ssc1_clk", NULL),
+	CLKDEV_INIT("at91rm9200_ssc.1", "pclk", NULL),
+};
+
+static struct clk_lookup tc0_clk_lookup[] = {
+	CLKDEV_INIT(NULL, "tc0_clk", NULL),
+	CLKDEV_INIT("atmel_tcb.0", "t0_clk", NULL),
+};
+
+static struct clk_lookup tc1_clk_lookup[] = {
+	CLKDEV_INIT(NULL, "tc1_clk", NULL),
+	CLKDEV_INIT("atmel_tcb.0", "t1_clk", NULL),
+};
+
+static struct clk_lookup tc2_clk_lookup[] = {
+	CLKDEV_INIT(NULL, "tc2_clk", NULL),
+	CLKDEV_INIT("atmel_tcb.0", "t2_clk", NULL),
+};
+
+static struct clk_lookup pwm_clk_lookup[] = {
+	CLKDEV_INIT(NULL, "pwm_clk", NULL),
+};
+
+static struct clk_lookup tsc_clk_lookup[] = {
+	CLKDEV_INIT(NULL, "tsc_clk", NULL),
+};
+
+static struct clk_lookup dma_clk_lookup[] = {
+	CLKDEV_INIT(NULL, "dma_clk", NULL),
+};
+
+static struct clk_lookup udphs_clk_lookup[] = {
+	CLKDEV_INIT(NULL, "udphs_clk", NULL),
+	CLKDEV_INIT("atmel_usba_udc", "pclk", NULL),
+};
+
+static struct clk_lookup lcdc_clk_lookup[] = {
+	CLKDEV_INIT(NULL, "lcdc_clk", NULL),
+	CLKDEV_INIT("at91sam9rl-lcdfb.0", "hclk", NULL),
+};
+
+static struct clk_lookup ac97_clk_lookup[] = {
+	CLKDEV_INIT(NULL, "ac97_clk", NULL),
+};
+
+static size_t periph_clock_lookup_sizes[] __initdata = {
+	0,
+	0,
+	ARRAY_SIZE(pioA_clk_lookup),
+	ARRAY_SIZE(pioB_clk_lookup),
+	ARRAY_SIZE(pioC_clk_lookup),
+	ARRAY_SIZE(pioD_clk_lookup),
+	ARRAY_SIZE(usart0_clk_lookup),
+	ARRAY_SIZE(usart1_clk_lookup),
+	ARRAY_SIZE(usart2_clk_lookup),
+	ARRAY_SIZE(usart3_clk_lookup),
+	ARRAY_SIZE(mci_clk_lookup),
+	ARRAY_SIZE(twi0_clk_lookup),
+	ARRAY_SIZE(twi1_clk_lookup),
+	ARRAY_SIZE(spi_clk_lookup),
+	ARRAY_SIZE(ssc0_clk_lookup),
+	ARRAY_SIZE(ssc1_clk_lookup),
+	ARRAY_SIZE(tc0_clk_lookup),
+	ARRAY_SIZE(tc1_clk_lookup),
+	ARRAY_SIZE(tc2_clk_lookup),
+	ARRAY_SIZE(pwm_clk_lookup),
+	ARRAY_SIZE(tsc_clk_lookup),
+	ARRAY_SIZE(dma_clk_lookup),
+	ARRAY_SIZE(udphs_clk_lookup),
+	ARRAY_SIZE(lcdc_clk_lookup),
+	ARRAY_SIZE(ac97_clk_lookup),
+};
+
+static struct clk_lookup *periph_clock_lookups[] __initdata = {
+	NULL,
+	NULL,
+	pioA_clk_lookup,
+	pioB_clk_lookup,
+	pioC_clk_lookup,
+	pioD_clk_lookup,
+	usart0_clk_lookup,
+	usart1_clk_lookup,
+	usart2_clk_lookup,
+	usart3_clk_lookup,
+	mci_clk_lookup,
+	twi0_clk_lookup,
+	twi1_clk_lookup,
+	spi_clk_lookup,
+	ssc0_clk_lookup,
+	ssc1_clk_lookup,
+	tc0_clk_lookup,
+	tc1_clk_lookup,
+	tc2_clk_lookup,
+	pwm_clk_lookup,
+	tsc_clk_lookup,
+	dma_clk_lookup,
+	udphs_clk_lookup,
+	lcdc_clk_lookup,
+	ac97_clk_lookup,
+};
+
+
+/*
+ * The system clocks.
+ */
+static struct clk_lookup pck0_clk_lookup[] = {
+	CLKDEV_INIT(NULL, "pck0", NULL),
+};
+
+static struct clk_lookup pck1_clk_lookup[] = {
+	CLKDEV_INIT(NULL, "pck1", NULL),
+};
+
+static size_t system_clock_lookup_sizes[] __initdata = {
+	0,
+	0,
+	0,
+	0,
+	0,
+	0,
+	0,
+	0,
+	ARRAY_SIZE(pck0_clk_lookup),
+	ARRAY_SIZE(pck1_clk_lookup),
+};
+
+static struct clk_lookup *system_clock_lookups[] __initdata = {
+	NULL,
+	NULL,
+	NULL,
+	NULL,
+	NULL,
+	NULL,
+	NULL,
+	NULL,
+	pck0_clk_lookup,
+	pck1_clk_lookup,
+};
+
+static const char *system_clock_parent_names[] __initdata = {
+	NULL,
+	NULL,
+	NULL,
+	NULL,
+	NULL,
+	NULL,
+	NULL,
+	NULL,
+	"prog0",
+	"prog1",
+};
+
+
+/*
+ * The pll clocks.
+ */
+static struct clk_lookup pll_clk_lookup[] = {
+	CLKDEV_INIT(NULL, "plla", NULL),
+};
+
+static struct clk_range at91sam9rl_pll_output[] = {
+	CLK_RANGE(80000000, 200000000),
+	CLK_RANGE(190000000, 240000000),
+};
+static u8 at91sam9rl_pll_out[] = {0, 2,};
+
+struct clk_pll_characteristics at91sam9rl_pll_characteristics = {
+	.input = CLK_RANGE(1000000, 32000000),
+	.num_output = ARRAY_SIZE(at91sam9rl_pll_output),
+	.output = at91sam9rl_pll_output,
+	.out = at91sam9rl_pll_out,
+};
+
+
 /*
- * The two programmable clocks.
- * You must configure pin multiplexing to bring these signals out.
+ * The master clock.
  */
-static struct clk pck0 = {
-	.name		= "pck0",
-	.pmc_mask	= AT91_PMC_PCK0,
-	.type		= CLK_TYPE_PROGRAMMABLE,
-	.id		= 0,
+static struct clk_lookup mck_clk_lookup[] = {
+	CLKDEV_INIT(NULL, "mck", NULL),
+	CLKDEV_INIT("atmel_usart.0", "usart", NULL),
+};
+
+struct clk_master_characteristics at91sam9rl_master_characteristics = {
+	.output = CLK_RANGE(0, 100000000),
+	.have_div3_pres = 0,
+	.divisors = {1, 2, 4, 0},
+};
+
+static const char *master_prog_clock_parent_names[] __initdata = {
+	"clk32k",
+	"main",
+	"plla",
 };
-static struct clk pck1 = {
-	.name		= "pck1",
-	.pmc_mask	= AT91_PMC_PCK1,
-	.type		= CLK_TYPE_PROGRAMMABLE,
-	.id		= 1,
+
+
+/*
+ * UTMI clock.
+ */
+static struct clk_lookup utmi_clk_lookup[] = {
+	CLKDEV_INIT(NULL, "utmi_clk", NULL),
+	CLKDEV_INIT("atmel_usba_udc", "hclk", NULL),
 };
 
+
 static void __init at91sam9rl_register_clocks(void)
 {
 	int i;
+	int k;
+	size_t size;
+	struct clk *clk;
+	const char *name;
+	struct clk_lookup *lookup;
+
+	clk = at91_clk_register_pll("plla", "main", 0,
+				    &at91rm9200_pll_layout,
+				    &at91sam9rl_pll_characteristics);
+	for (i = 0; i < ARRAY_SIZE(pll_clk_lookup); i++)
+		pll_clk_lookup[i].clk = clk;
+	clkdev_add_table(pll_clk_lookup, ARRAY_SIZE(pll_clk_lookup));
 
-	for (i = 0; i < ARRAY_SIZE(periph_clocks); i++)
-		clk_register(periph_clocks[i]);
+	clk = at91_clk_register_utmi("utmi_clk", "main");
+	for (i = 0; i < ARRAY_SIZE(utmi_clk_lookup); i++)
+		utmi_clk_lookup[i].clk = clk;
+	clkdev_add_table(utmi_clk_lookup, ARRAY_SIZE(utmi_clk_lookup));
 
-	clkdev_add_table(periph_clocks_lookups,
-			 ARRAY_SIZE(periph_clocks_lookups));
-	clkdev_add_table(usart_clocks_lookups,
-			 ARRAY_SIZE(usart_clocks_lookups));
+	clk = at91_clk_register_master("mck",
+				ARRAY_SIZE(master_prog_clock_parent_names),
+				master_prog_clock_parent_names,
+				&at91rm9200_master_layout,
+				&at91sam9rl_master_characteristics);
+	for (i = 0; i < ARRAY_SIZE(mck_clk_lookup); i++)
+		mck_clk_lookup[i].clk = clk;
+	clkdev_add_table(mck_clk_lookup, ARRAY_SIZE(mck_clk_lookup));
 
-	clk_register(&pck0);
-	clk_register(&pck1);
+	for (i = 0; i < ARRAY_SIZE(periph_clock_lookup_sizes); i++) {
+		size = periph_clock_lookup_sizes[i];
+		lookup = periph_clock_lookups[i];
+		if (!size || !lookup)
+			continue;
+		name = periph_clock_lookups[i][0].con_id;
+		if (!name)
+			continue;
+		clk = at91_clk_register_peripheral(name, "mck", i);
+
+		for (k = 0; k < size; k++)
+			lookup[k].clk = clk;
+		clkdev_add_table(lookup, size);
+	}
+
+	for (i = 0; i < 2; i++) {
+		name = system_clock_parent_names[8 + i];
+		clk = at91_clk_register_programmable(name,
+				master_prog_clock_parent_names,
+				ARRAY_SIZE(master_prog_clock_parent_names),
+				i, &at91rm9200_programmable_layout);
+	}
+
+	for (i = 0; i < ARRAY_SIZE(system_clock_lookup_sizes); i++) {
+		size = system_clock_lookup_sizes[i];
+		lookup = system_clock_lookups[i];
+		if (!size || !lookup)
+			continue;
+		name = system_clock_lookups[i][0].con_id;
+		if (!name || !system_clock_parent_names[i])
+			continue;
+		clk = at91_clk_register_system(name,
+					       system_clock_parent_names[i],
+					       i);
+		for (k = 0; k < size; k++)
+			lookup[k].clk = clk;
+		clkdev_add_table(lookup, size);
+	}
 }
 
 /* --------------------------------------------------------------------
-- 
1.7.9.5

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