OMAP4: Add EMIF driver support

This patch adds EMIF driver registration support with hwmod.

This patch adds auto-generated header files for EMIF and
DMM IP blocks. The scripts are updated accordingly

We now have a set of APIs for:
Add a set of APIs for the following:
1. Calculating the values of emif configuration registers based on the
	organization of memory in the device, the AC timing parameters of the
	memory device, data from JESD209-2 - the LPDDR2 spec, and the frequency
	at which the LPDDR2 interface is operating.
2. Updating the EMIF settings on:
	a. frequency change
	b. voltage ramp
	c. temperature change

OMAP4 EMIF driver also supports the lppddr2 thermal management support as
expected by JEDEC standards.

[girishsg@ti.com: Helped in fixing the comments]
Signed-off-by: Girish S G <girishsg@ti.com>
[vvardhan@ti.com: contributed towards thermal support]
Signed-off-by: Vibhore Vardhan <vvardhan@ti.com>
[b-cousson@ti.com, santosh.shilimkar@ti.com: contributed for hwmod and basic
driver support, Thermal]
Signed-off-by: Benoit Cousson <b-cousson@ti.com>
Signed-off-by: Santosh Shilimkar <santosh.shilimkar@ti.com>
Signed-off-by: Aneesh V <aneesh@ti.com>

1 files changed, 106 insertions, 0 deletions

diff --git a/arch/arm/mach-omap2/omap_hwmod_44xx_data.c b/arch/arm/mach-omap2/omap_hwmod_44xx_data.c
index 22a45f8..d0b9856 100644
--- a/arch/arm/mach-omap2/omap_hwmod_44xx_data.c
+++ b/arch/arm/mach-omap2/omap_hwmod_44xx_data.c
@@ -2093,6 +2093,108 @@ static struct omap_hwmod omap44xx_dss_venc_hwmod = {
 };
 
 /*
+ * 'emif' class
+ * external memory interface no1
+ */
+
+static struct omap_hwmod_class omap44xx_emif_hwmod_class = {
+	.name	= "emif",
+};
+
+/* emif1 */
+static struct omap_hwmod omap44xx_emif1_hwmod;
+static struct omap_hwmod_irq_info omap44xx_emif1_irqs[] = {
+	{ .irq = 110 + OMAP44XX_IRQ_GIC_START },
+};
+
+static struct omap_hwmod_addr_space omap44xx_emif1_addrs[] = {
+	{
+		.pa_start	= 0x4c000000,
+		.pa_end		= 0x4c0000ff,
+		.flags		= ADDR_TYPE_RT
+	},
+};
+
+/* emif_fw -> emif1 */
+static struct omap_hwmod_ocp_if omap44xx_emif_fw__emif1 = {
+	.master		= &omap44xx_emif_fw_hwmod,
+	.slave		= &omap44xx_emif1_hwmod,
+	.clk		= "l3_div_ck",
+	.addr		= omap44xx_emif1_addrs,
+	.addr_cnt	= ARRAY_SIZE(omap44xx_emif1_addrs),
+	.user		= OCP_USER_MPU | OCP_USER_SDMA,
+};
+
+/* emif1 slave ports */
+static struct omap_hwmod_ocp_if *omap44xx_emif1_slaves[] = {
+	&omap44xx_emif_fw__emif1,
+};
+
+static struct omap_hwmod omap44xx_emif1_hwmod = {
+	.name		= "emif1",
+	.class		= &omap44xx_emif_hwmod_class,
+	.flags		= HWMOD_INIT_NO_IDLE | HWMOD_INIT_NO_RESET,
+	.mpu_irqs	= omap44xx_emif1_irqs,
+	.mpu_irqs_cnt	= ARRAY_SIZE(omap44xx_emif1_irqs),
+	.main_clk	= "emif1_fck",
+	.prcm		= {
+		.omap4 = {
+			.clkctrl_reg = OMAP4430_CM_MEMIF_EMIF_1_CLKCTRL,
+		},
+	},
+	.slaves		= omap44xx_emif1_slaves,
+	.slaves_cnt	= ARRAY_SIZE(omap44xx_emif1_slaves),
+	.omap_chip	= OMAP_CHIP_INIT(CHIP_IS_OMAP44XX),
+};
+
+/* emif2 */
+static struct omap_hwmod omap44xx_emif2_hwmod;
+static struct omap_hwmod_irq_info omap44xx_emif2_irqs[] = {
+	{ .irq = 111 + OMAP44XX_IRQ_GIC_START },
+};
+
+static struct omap_hwmod_addr_space omap44xx_emif2_addrs[] = {
+	{
+		.pa_start	= 0x4d000000,
+		.pa_end		= 0x4d0000ff,
+		.flags		= ADDR_TYPE_RT
+	},
+};
+
+/* emif_fw -> emif2 */
+static struct omap_hwmod_ocp_if omap44xx_emif_fw__emif2 = {
+	.master		= &omap44xx_emif_fw_hwmod,
+	.slave		= &omap44xx_emif2_hwmod,
+	.clk		= "l3_div_ck",
+	.addr		= omap44xx_emif2_addrs,
+	.addr_cnt	= ARRAY_SIZE(omap44xx_emif2_addrs),
+	.user		= OCP_USER_MPU | OCP_USER_SDMA,
+};
+
+/* emif2 slave ports */
+static struct omap_hwmod_ocp_if *omap44xx_emif2_slaves[] = {
+	&omap44xx_emif_fw__emif2,
+};
+
+static struct omap_hwmod omap44xx_emif2_hwmod = {
+	.name		= "emif2",
+	.class		= &omap44xx_emif_hwmod_class,
+	.flags		= HWMOD_INIT_NO_IDLE | HWMOD_INIT_NO_RESET,
+	.mpu_irqs	= omap44xx_emif2_irqs,
+	.mpu_irqs_cnt	= ARRAY_SIZE(omap44xx_emif2_irqs),
+	.main_clk	= "emif2_fck",
+	.prcm		= {
+		.omap4 = {
+			.clkctrl_reg = OMAP4430_CM_MEMIF_EMIF_2_CLKCTRL,
+		},
+	},
+	.slaves		= omap44xx_emif2_slaves,
+	.slaves_cnt	= ARRAY_SIZE(omap44xx_emif2_slaves),
+	.omap_chip	= OMAP_CHIP_INIT(CHIP_IS_OMAP44XX),
+};
+
+
+/*
  * 'fdif' class
  * face detection hw accelerator module
  */
@@ -5509,6 +5611,10 @@ static __initdata struct omap_hwmod *omap44xx_hwmods[] = {
 	&omap44xx_dss_rfbi_hwmod,
 	&omap44xx_dss_venc_hwmod,
 
+	/* emif class */
+	&omap44xx_emif1_hwmod,
+	&omap44xx_emif2_hwmod,
+
 	/* gpio class */
 	&omap443x_gpio1_hwmod,
 	&omap446x_gpio1_hwmod,