davinci: update DM644x support in preparation for more SoCs

Rework DM644x code into SoC specific and board specific parts.
This is also to generalize the structure a bit so it's easier to add
support for new SoCs in the DaVinci family.

Signed-off-by: Kevin Hilman <khilman@deeprootsystems.com>

1 files changed, 461 insertions, 0 deletions

diff --git a/arch/arm/mach-davinci/dm644x.c b/arch/arm/mach-davinci/dm644x.c
new file mode 100644
index 000000000000..d428ef192eac
--- /dev/null
+++ b/arch/arm/mach-davinci/dm644x.c
@@ -0,0 +1,461 @@
+/*
+ * TI DaVinci DM644x chip specific setup
+ *
+ * Author: Kevin Hilman, Deep Root Systems, LLC
+ *
+ * 2007 (c) Deep Root Systems, LLC. This file is licensed under
+ * the terms of the GNU General Public License version 2. This program
+ * is licensed "as is" without any warranty of any kind, whether express
+ * or implied.
+ */
+#include <linux/kernel.h>
+#include <linux/init.h>
+#include <linux/clk.h>
+#include <linux/platform_device.h>
+
+#include <mach/dm644x.h>
+#include <mach/clock.h>
+#include <mach/cputype.h>
+#include <mach/edma.h>
+#include <mach/irqs.h>
+#include <mach/psc.h>
+#include <mach/mux.h>
+
+#include "clock.h"
+#include "mux.h"
+
+/*
+ * Device specific clocks
+ */
+#define DM644X_REF_FREQ         27000000
+
+static struct pll_data pll1_data = {
+        .num       = 1,
+        .phys_base = DAVINCI_PLL1_BASE,
+};
+
+static struct pll_data pll2_data = {
+        .num       = 2,
+        .phys_base = DAVINCI_PLL2_BASE,
+};
+
+static struct clk ref_clk = {
+        .name = "ref_clk",
+        .rate = DM644X_REF_FREQ,
+};
+
+static struct clk pll1_clk = {
+        .name = "pll1",
+        .parent = &ref_clk,
+        .pll_data = &pll1_data,
+        .flags = CLK_PLL,
+};
+
+static struct clk pll1_sysclk1 = {
+        .name = "pll1_sysclk1",
+        .parent = &pll1_clk,
+        .flags = CLK_PLL,
+        .div_reg = PLLDIV1,
+};
+
+static struct clk pll1_sysclk2 = {
+        .name = "pll1_sysclk2",
+        .parent = &pll1_clk,
+        .flags = CLK_PLL,
+        .div_reg = PLLDIV2,
+};
+
+static struct clk pll1_sysclk3 = {
+        .name = "pll1_sysclk3",
+        .parent = &pll1_clk,
+        .flags = CLK_PLL,
+        .div_reg = PLLDIV3,
+};
+
+static struct clk pll1_sysclk5 = {
+        .name = "pll1_sysclk5",
+        .parent = &pll1_clk,
+        .flags = CLK_PLL,
+        .div_reg = PLLDIV5,
+};
+
+static struct clk pll1_aux_clk = {
+        .name = "pll1_aux_clk",
+        .parent = &pll1_clk,
+        .flags = CLK_PLL | PRE_PLL,
+};
+
+static struct clk pll1_sysclkbp = {
+        .name = "pll1_sysclkbp",
+        .parent = &pll1_clk,
+        .flags = CLK_PLL | PRE_PLL,
+        .div_reg = BPDIV
+};
+
+static struct clk pll2_clk = {
+        .name = "pll2",
+        .parent = &ref_clk,
+        .pll_data = &pll2_data,
+        .flags = CLK_PLL,
+};
+
+static struct clk pll2_sysclk1 = {
+        .name = "pll2_sysclk1",
+        .parent = &pll2_clk,
+        .flags = CLK_PLL,
+        .div_reg = PLLDIV1,
+};
+
+static struct clk pll2_sysclk2 = {
+        .name = "pll2_sysclk2",
+        .parent = &pll2_clk,
+        .flags = CLK_PLL,
+        .div_reg = PLLDIV2,
+};
+
+static struct clk pll2_sysclkbp = {
+        .name = "pll2_sysclkbp",
+        .parent = &pll2_clk,
+        .flags = CLK_PLL | PRE_PLL,
+        .div_reg = BPDIV
+};
+
+static struct clk dsp_clk = {
+        .name = "dsp",
+        .parent = &pll1_sysclk1,
+        .lpsc = DAVINCI_LPSC_GEM,
+        .flags = PSC_DSP,
+        .usecount = 1,                  /* REVISIT how to disable? */
+};
+
+static struct clk arm_clk = {
+        .name = "arm",
+        .parent = &pll1_sysclk2,
+        .lpsc = DAVINCI_LPSC_ARM,
+        .flags = ALWAYS_ENABLED,
+};
+
+static struct clk vicp_clk = {
+        .name = "vicp",
+        .parent = &pll1_sysclk2,
+        .lpsc = DAVINCI_LPSC_IMCOP,
+        .flags = PSC_DSP,
+        .usecount = 1,                  /* REVISIT how to disable? */
+};
+
+static struct clk vpss_master_clk = {
+        .name = "vpss_master",
+        .parent = &pll1_sysclk3,
+        .lpsc = DAVINCI_LPSC_VPSSMSTR,
+        .flags = CLK_PSC,
+};
+
+static struct clk vpss_slave_clk = {
+        .name = "vpss_slave",
+        .parent = &pll1_sysclk3,
+        .lpsc = DAVINCI_LPSC_VPSSSLV,
+};
+
+static struct clk uart0_clk = {
+        .name = "uart0",
+        .parent = &pll1_aux_clk,
+        .lpsc = DAVINCI_LPSC_UART0,
+};
+
+static struct clk uart1_clk = {
+        .name = "uart1",
+        .parent = &pll1_aux_clk,
+        .lpsc = DAVINCI_LPSC_UART1,
+};
+
+static struct clk uart2_clk = {
+        .name = "uart2",
+        .parent = &pll1_aux_clk,
+        .lpsc = DAVINCI_LPSC_UART2,
+};
+
+static struct clk emac_clk = {
+        .name = "emac",
+        .parent = &pll1_sysclk5,
+        .lpsc = DAVINCI_LPSC_EMAC_WRAPPER,
+};
+
+static struct clk i2c_clk = {
+        .name = "i2c",
+        .parent = &pll1_aux_clk,
+        .lpsc = DAVINCI_LPSC_I2C,
+};
+
+static struct clk ide_clk = {
+        .name = "ide",
+        .parent = &pll1_sysclk5,
+        .lpsc = DAVINCI_LPSC_ATA,
+};
+
+static struct clk asp_clk = {
+        .name = "asp0",
+        .parent = &pll1_sysclk5,
+        .lpsc = DAVINCI_LPSC_McBSP,
+};
+
+static struct clk mmcsd_clk = {
+        .name = "mmcsd",
+        .parent = &pll1_sysclk5,
+        .lpsc = DAVINCI_LPSC_MMC_SD,
+};
+
+static struct clk spi_clk = {
+        .name = "spi",
+        .parent = &pll1_sysclk5,
+        .lpsc = DAVINCI_LPSC_SPI,
+};
+
+static struct clk gpio_clk = {
+        .name = "gpio",
+        .parent = &pll1_sysclk5,
+        .lpsc = DAVINCI_LPSC_GPIO,
+};
+
+static struct clk usb_clk = {
+        .name = "usb",
+        .parent = &pll1_sysclk5,
+        .lpsc = DAVINCI_LPSC_USB,
+};
+
+static struct clk vlynq_clk = {
+        .name = "vlynq",
+        .parent = &pll1_sysclk5,
+        .lpsc = DAVINCI_LPSC_VLYNQ,
+};
+
+static struct clk aemif_clk = {
+        .name = "aemif",
+        .parent = &pll1_sysclk5,
+        .lpsc = DAVINCI_LPSC_AEMIF,
+};
+
+static struct clk pwm0_clk = {
+        .name = "pwm0",
+        .parent = &pll1_aux_clk,
+        .lpsc = DAVINCI_LPSC_PWM0,
+};
+
+static struct clk pwm1_clk = {
+        .name = "pwm1",
+        .parent = &pll1_aux_clk,
+        .lpsc = DAVINCI_LPSC_PWM1,
+};
+
+static struct clk pwm2_clk = {
+        .name = "pwm2",
+        .parent = &pll1_aux_clk,
+        .lpsc = DAVINCI_LPSC_PWM2,
+};
+
+static struct clk timer0_clk = {
+        .name = "timer0",
+        .parent = &pll1_aux_clk,
+        .lpsc = DAVINCI_LPSC_TIMER0,
+};
+
+static struct clk timer1_clk = {
+        .name = "timer1",
+        .parent = &pll1_aux_clk,
+        .lpsc = DAVINCI_LPSC_TIMER1,
+};
+
+static struct clk timer2_clk = {
+        .name = "timer2",
+        .parent = &pll1_aux_clk,
+        .lpsc = DAVINCI_LPSC_TIMER2,
+        .usecount = 1,              /* REVISIT: why cant' this be disabled? */
+};
+
+struct davinci_clk dm644x_clks[] = {
+        CLK(NULL, "ref", &ref_clk),
+        CLK(NULL, "pll1", &pll1_clk),
+        CLK(NULL, "pll1_sysclk1", &pll1_sysclk1),
+        CLK(NULL, "pll1_sysclk2", &pll1_sysclk2),
+        CLK(NULL, "pll1_sysclk3", &pll1_sysclk3),
+        CLK(NULL, "pll1_sysclk5", &pll1_sysclk5),
+        CLK(NULL, "pll1_aux", &pll1_aux_clk),
+        CLK(NULL, "pll1_sysclkbp", &pll1_sysclkbp),
+        CLK(NULL, "pll2", &pll2_clk),
+        CLK(NULL, "pll2_sysclk1", &pll2_sysclk1),
+        CLK(NULL, "pll2_sysclk2", &pll2_sysclk2),
+        CLK(NULL, "pll2_sysclkbp", &pll2_sysclkbp),
+        CLK(NULL, "dsp", &dsp_clk),
+        CLK(NULL, "arm", &arm_clk),
+        CLK(NULL, "vicp", &vicp_clk),
+        CLK(NULL, "vpss_master", &vpss_master_clk),
+        CLK(NULL, "vpss_slave", &vpss_slave_clk),
+        CLK(NULL, "arm", &arm_clk),
+        CLK(NULL, "uart0", &uart0_clk),
+        CLK(NULL, "uart1", &uart1_clk),
+        CLK(NULL, "uart2", &uart2_clk),
+        CLK("davinci_emac.1", NULL, &emac_clk),
+        CLK("i2c_davinci.1", NULL, &i2c_clk),
+        CLK("palm_bk3710", NULL, &ide_clk),
+        CLK("soc-audio.0", NULL, &asp_clk),
+        CLK("davinci_mmc.0", NULL, &mmcsd_clk),
+        CLK(NULL, "spi", &spi_clk),
+        CLK(NULL, "gpio", &gpio_clk),
+        CLK(NULL, "usb", &usb_clk),
+        CLK(NULL, "vlynq", &vlynq_clk),
+        CLK(NULL, "aemif", &aemif_clk),
+        CLK(NULL, "pwm0", &pwm0_clk),
+        CLK(NULL, "pwm1", &pwm1_clk),
+        CLK(NULL, "pwm2", &pwm2_clk),
+        CLK(NULL, "timer0", &timer0_clk),
+        CLK(NULL, "timer1", &timer1_clk),
+        CLK("watchdog", NULL, &timer2_clk),
+        CLK(NULL, NULL, NULL),
+};
+
+#if defined(CONFIG_TI_DAVINCI_EMAC) || defined(CONFIG_TI_DAVINCI_EMAC_MODULE)
+
+static struct resource dm644x_emac_resources[] = {
+        {
+                .start  = DM644X_EMAC_BASE,
+                .end    = DM644X_EMAC_BASE + 0x47ff,
+                .flags  = IORESOURCE_MEM,
+        },
+        {
+                .start = IRQ_EMACINT,
+                .end   = IRQ_EMACINT,
+                .flags = IORESOURCE_IRQ,
+        },
+};
+
+static struct platform_device dm644x_emac_device = {
+       .name            = "davinci_emac",
+       .id              = 1,
+       .num_resources   = ARRAY_SIZE(dm644x_emac_resources),
+       .resource        = dm644x_emac_resources,
+};
+
+#endif
+
+/*
+ * Device specific mux setup
+ *
+ *      soc     description     mux  mode   mode  mux    dbg
+ *                              reg  offset mask  mode
+ */
+static const struct mux_config dm644x_pins[] = {
+MUX_CFG(DM644X, HDIREN,         0,   16,    1,    1,     true)
+MUX_CFG(DM644X, ATAEN,          0,   17,    1,    1,     true)
+MUX_CFG(DM644X, ATAEN_DISABLE,  0,   17,    1,    0,     true)
+
+MUX_CFG(DM644X, HPIEN_DISABLE,  0,   29,    1,    0,     true)
+
+MUX_CFG(DM644X, AEAW,           0,   0,     31,   31,    true)
+
+MUX_CFG(DM644X, MSTK,           1,   9,     1,    0,     false)
+
+MUX_CFG(DM644X, I2C,            1,   7,     1,    1,     false)
+
+MUX_CFG(DM644X, MCBSP,          1,   10,    1,    1,     false)
+
+MUX_CFG(DM644X, UART1,          1,   1,     1,    1,     true)
+MUX_CFG(DM644X, UART2,          1,   2,     1,    1,     true)
+
+MUX_CFG(DM644X, PWM0,           1,   4,     1,    1,     false)
+
+MUX_CFG(DM644X, PWM1,           1,   5,     1,    1,     false)
+
+MUX_CFG(DM644X, PWM2,           1,   6,     1,    1,     false)
+
+MUX_CFG(DM644X, VLYNQEN,        0,   15,    1,    1,     false)
+MUX_CFG(DM644X, VLSCREN,        0,   14,    1,    1,     false)
+MUX_CFG(DM644X, VLYNQWD,        0,   12,    3,    3,     false)
+
+MUX_CFG(DM644X, EMACEN,         0,   31,    1,    1,     true)
+
+MUX_CFG(DM644X, GPIO3V,         0,   31,    1,    0,     true)
+
+MUX_CFG(DM644X, GPIO0,          0,   24,    1,    0,     true)
+MUX_CFG(DM644X, GPIO3,          0,   25,    1,    0,     false)
+MUX_CFG(DM644X, GPIO43_44,      1,   7,     1,    0,     false)
+MUX_CFG(DM644X, GPIO46_47,      0,   22,    1,    0,     true)
+
+MUX_CFG(DM644X, RGB666,         0,   22,    1,    1,     true)
+
+MUX_CFG(DM644X, LOEEN,          0,   24,    1,    1,     true)
+MUX_CFG(DM644X, LFLDEN,         0,   25,    1,    1,     false)
+};
+
+
+/*----------------------------------------------------------------------*/
+
+static const s8 dma_chan_dm644x_no_event[] = {
+         0,  1, 12, 13, 14,
+        15, 25, 30, 31, 45,
+        46, 47, 55, 56, 57,
+        58, 59, 60, 61, 62,
+        63,
+        -1
+};
+
+static struct edma_soc_info dm644x_edma_info = {
+        .n_channel      = 64,
+        .n_region       = 4,
+        .n_slot         = 128,
+        .n_tc           = 2,
+        .noevent        = dma_chan_dm644x_no_event,
+};
+
+static struct resource edma_resources[] = {
+        {
+                .name   = "edma_cc",
+                .start  = 0x01c00000,
+                .end    = 0x01c00000 + SZ_64K - 1,
+                .flags  = IORESOURCE_MEM,
+        },
+        {
+                .name   = "edma_tc0",
+                .start  = 0x01c10000,
+                .end    = 0x01c10000 + SZ_1K - 1,
+                .flags  = IORESOURCE_MEM,
+        },
+        {
+                .name   = "edma_tc1",
+                .start  = 0x01c10400,
+                .end    = 0x01c10400 + SZ_1K - 1,
+                .flags  = IORESOURCE_MEM,
+        },
+        {
+                .start  = IRQ_CCINT0,
+                .flags  = IORESOURCE_IRQ,
+        },
+        {
+                .start  = IRQ_CCERRINT,
+                .flags  = IORESOURCE_IRQ,
+        },
+        /* not using TC*_ERR */
+};
+
+static struct platform_device dm644x_edma_device = {
+        .name                   = "edma",
+        .id                     = -1,
+        .dev.platform_data      = &dm644x_edma_info,
+        .num_resources          = ARRAY_SIZE(edma_resources),
+        .resource               = edma_resources,
+};
+
+/*----------------------------------------------------------------------*/
+void __init dm644x_init(void)
+{
+        davinci_clk_init(dm644x_clks);
+        davinci_mux_register(dm644x_pins, ARRAY_SIZE(dm644x_pins));
+}
+
+static int __init dm644x_init_devices(void)
+{
+        if (!cpu_is_davinci_dm644x())
+                return 0;
+
+        platform_device_register(&dm644x_edma_device);
+        return 0;
+}
+postcore_initcall(dm644x_init_devices);