Merge remote-tracking branch 'airlied/drm-fixes' into drm-intel-next-queued

Back-merge from drm-fixes into drm-intel-next to sort out two things:

- interlaced support: -fixes contains a bugfix to correctly clear
  interlaced configuration bits in case the bios sets up an interlaced
  mode and we want to set up the progressive mode (current kernels
  don't support interlaced). The actual feature work to support
  interlaced depends upon (and conflicts with) this bugfix.

- forcewake voodoo to workaround missed IRQ issues: -fixes only enabled
  this for ivybridge, but some recent bug reports indicate that we
  need this on Sandybridge, too. But in a slightly different flavour
  and with other fixes and reworks on top. Additionally there are some
  forcewake cleanup patches heading to -next that would conflict with
  currrent -fixes.

Signed-Off-by: Daniel Vetter <daniel.vetter@ffwll.ch>

1 files changed, 176 insertions, 0 deletions

diff --git a/arch/arm/mach-shmobile/clock-r8a7779.c b/arch/arm/mach-shmobile/clock-r8a7779.c
new file mode 100644
index 00000000000..b4b0e8cd096
--- /dev/null
+++ b/arch/arm/mach-shmobile/clock-r8a7779.c
@@ -0,0 +1,176 @@
+/*
+ * r8a7779 clock framework support
+ *
+ * Copyright (C) 2011  Renesas Solutions Corp.
+ * Copyright (C) 2011  Magnus Damm
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
+ */
+#include <linux/init.h>
+#include <linux/kernel.h>
+#include <linux/io.h>
+#include <linux/sh_clk.h>
+#include <linux/clkdev.h>
+#include <mach/common.h>
+
+#define FRQMR   0xffc80014
+#define MSTPCR0 0xffc80030
+#define MSTPCR1 0xffc80034
+#define MSTPCR3 0xffc8003c
+#define MSTPSR1 0xffc80044
+#define MSTPSR4 0xffc80048
+#define MSTPSR6 0xffc8004c
+#define MSTPCR4 0xffc80050
+#define MSTPCR5 0xffc80054
+#define MSTPCR6 0xffc80058
+#define MSTPCR7 0xffc80040
+
+/* ioremap() through clock mapping mandatory to avoid
+ * collision with ARM coherent DMA virtual memory range.
+ */
+
+static struct clk_mapping cpg_mapping = {
+	.phys	= 0xffc80000,
+	.len	= 0x80,
+};
+
+/*
+ * Default rate for the root input clock, reset this with clk_set_rate()
+ * from the platform code.
+ */
+static struct clk plla_clk = {
+	.rate		= 1500000000,
+	.mapping	= &cpg_mapping,
+};
+
+static struct clk *main_clks[] = {
+	&plla_clk,
+};
+
+static int divisors[] = { 0, 0, 0, 6, 8, 12, 16, 0, 24, 32, 36, 0, 0, 0, 0, 0 };
+
+static struct clk_div_mult_table div4_div_mult_table = {
+	.divisors = divisors,
+	.nr_divisors = ARRAY_SIZE(divisors),
+};
+
+static struct clk_div4_table div4_table = {
+	.div_mult_table = &div4_div_mult_table,
+};
+
+enum { DIV4_S, DIV4_OUT, DIV4_S4, DIV4_S3, DIV4_S1, DIV4_P, DIV4_NR };
+
+static struct clk div4_clks[DIV4_NR] = {
+	[DIV4_S]	= SH_CLK_DIV4(&plla_clk, FRQMR, 20,
+				      0x0018, CLK_ENABLE_ON_INIT),
+	[DIV4_OUT]	= SH_CLK_DIV4(&plla_clk, FRQMR, 16,
+				      0x0700, CLK_ENABLE_ON_INIT),
+	[DIV4_S4]	= SH_CLK_DIV4(&plla_clk, FRQMR, 12,
+				      0x0040, CLK_ENABLE_ON_INIT),
+	[DIV4_S3]	= SH_CLK_DIV4(&plla_clk, FRQMR, 8,
+				      0x0010, CLK_ENABLE_ON_INIT),
+	[DIV4_S1]	= SH_CLK_DIV4(&plla_clk, FRQMR, 4,
+				      0x0060, CLK_ENABLE_ON_INIT),
+	[DIV4_P]	= SH_CLK_DIV4(&plla_clk, FRQMR, 0,
+				      0x0300, CLK_ENABLE_ON_INIT),
+};
+
+enum { MSTP026, MSTP025, MSTP024, MSTP023, MSTP022, MSTP021,
+	MSTP016, MSTP015, MSTP014,
+	MSTP_NR };
+
+static struct clk mstp_clks[MSTP_NR] = {
+	[MSTP026] = SH_CLK_MSTP32(&div4_clks[DIV4_P], MSTPCR0, 26, 0), /* SCIF0 */
+	[MSTP025] = SH_CLK_MSTP32(&div4_clks[DIV4_P], MSTPCR0, 25, 0), /* SCIF1 */
+	[MSTP024] = SH_CLK_MSTP32(&div4_clks[DIV4_P], MSTPCR0, 24, 0), /* SCIF2 */
+	[MSTP023] = SH_CLK_MSTP32(&div4_clks[DIV4_P], MSTPCR0, 23, 0), /* SCIF3 */
+	[MSTP022] = SH_CLK_MSTP32(&div4_clks[DIV4_P], MSTPCR0, 22, 0), /* SCIF4 */
+	[MSTP021] = SH_CLK_MSTP32(&div4_clks[DIV4_P], MSTPCR0, 21, 0), /* SCIF5 */
+	[MSTP016] = SH_CLK_MSTP32(&div4_clks[DIV4_P], MSTPCR0, 16, 0), /* TMU0 */
+	[MSTP015] = SH_CLK_MSTP32(&div4_clks[DIV4_P], MSTPCR0, 15, 0), /* TMU1 */
+	[MSTP014] = SH_CLK_MSTP32(&div4_clks[DIV4_P], MSTPCR0, 14, 0), /* TMU2 */
+};
+
+static unsigned long mul4_recalc(struct clk *clk)
+{
+	return clk->parent->rate * 4;
+}
+
+static struct clk_ops mul4_clk_ops = {
+	.recalc		= mul4_recalc,
+};
+
+struct clk clkz_clk = {
+	.ops		= &mul4_clk_ops,
+	.parent		= &div4_clks[DIV4_S],
+};
+
+struct clk clkzs_clk = {
+	/* clks x 4 / 4 = clks */
+	.parent		= &div4_clks[DIV4_S],
+};
+
+static struct clk *late_main_clks[] = {
+	&clkz_clk,
+	&clkzs_clk,
+};
+
+static struct clk_lookup lookups[] = {
+	/* main clocks */
+	CLKDEV_CON_ID("plla_clk", &plla_clk),
+	CLKDEV_CON_ID("clkz_clk", &clkz_clk),
+	CLKDEV_CON_ID("clkzs_clk", &clkzs_clk),
+
+	/* DIV4 clocks */
+	CLKDEV_CON_ID("shyway_clk",	&div4_clks[DIV4_S]),
+	CLKDEV_CON_ID("bus_clk",	&div4_clks[DIV4_OUT]),
+	CLKDEV_CON_ID("shyway4_clk",	&div4_clks[DIV4_S4]),
+	CLKDEV_CON_ID("shyway3_clk",	&div4_clks[DIV4_S3]),
+	CLKDEV_CON_ID("shyway1_clk",	&div4_clks[DIV4_S1]),
+	CLKDEV_CON_ID("peripheral_clk",	&div4_clks[DIV4_P]),
+
+	/* MSTP32 clocks */
+	CLKDEV_DEV_ID("sh_tmu.0", &mstp_clks[MSTP016]), /* TMU00 */
+	CLKDEV_DEV_ID("sh_tmu.1", &mstp_clks[MSTP016]), /* TMU01 */
+	CLKDEV_DEV_ID("sh-sci.0", &mstp_clks[MSTP026]), /* SCIF0 */
+	CLKDEV_DEV_ID("sh-sci.1", &mstp_clks[MSTP025]), /* SCIF1 */
+	CLKDEV_DEV_ID("sh-sci.2", &mstp_clks[MSTP024]), /* SCIF2 */
+	CLKDEV_DEV_ID("sh-sci.3", &mstp_clks[MSTP023]), /* SCIF3 */
+	CLKDEV_DEV_ID("sh-sci.4", &mstp_clks[MSTP022]), /* SCIF4 */
+	CLKDEV_DEV_ID("sh-sci.5", &mstp_clks[MSTP021]), /* SCIF6 */
+};
+
+void __init r8a7779_clock_init(void)
+{
+	int k, ret = 0;
+
+	for (k = 0; !ret && (k < ARRAY_SIZE(main_clks)); k++)
+		ret = clk_register(main_clks[k]);
+
+	if (!ret)
+		ret = sh_clk_div4_register(div4_clks, DIV4_NR, &div4_table);
+
+	if (!ret)
+		ret = sh_clk_mstp32_register(mstp_clks, MSTP_NR);
+
+	for (k = 0; !ret && (k < ARRAY_SIZE(late_main_clks)); k++)
+		ret = clk_register(late_main_clks[k]);
+
+	clkdev_add_table(lookups, ARRAY_SIZE(lookups));
+
+	if (!ret)
+		clk_init();
+	else
+		panic("failed to setup r8a7779 clocks\n");
+}