From: Sascha Hauer <s.hauer@pengutronix.de>
To: linux-arm-kernel@lists.infradead.org
Cc: linux-kernel@vger.kernel.org,
Samuel Ortiz <sameo@linux.intel.com>,
liu.y.victor@gmail.com, B02280@freescale.com,
Sascha Hauer <s.hauer@pengutronix.de>
Subject: [PATCH 1/9] ARM i.MX51: Add ipu clock support
Date: Mon, 20 Dec 2010 11:48:39 +0100 [thread overview]
Message-ID: <1292842127-21406-2-git-send-email-s.hauer@pengutronix.de> (raw)
In-Reply-To: <1292842127-21406-1-git-send-email-s.hauer@pengutronix.de>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
---
arch/arm/mach-mx5/clock-mx51-mx53.c | 140 +++++++++++++++++++++++++++++++++++
1 files changed, 140 insertions(+), 0 deletions(-)
diff --git a/arch/arm/mach-mx5/clock-mx51-mx53.c b/arch/arm/mach-mx5/clock-mx51-mx53.c
index 9fc65bb..f550d02 100644
--- a/arch/arm/mach-mx5/clock-mx51-mx53.c
+++ b/arch/arm/mach-mx5/clock-mx51-mx53.c
@@ -39,6 +39,9 @@ static struct clk periph_apm_clk;
static struct clk ahb_clk;
static struct clk ipg_clk;
static struct clk usboh3_clk;
+static struct clk emi_fast_clk;
+static struct clk ipu_clk;
+static struct clk mipi_hsc1_clk;
#define MAX_DPLL_WAIT_TRIES 1000 /* 1000 * udelay(1) = 1ms */
@@ -688,6 +691,19 @@ static unsigned long clk_emi_slow_get_rate(struct clk *clk)
return clk_get_rate(clk->parent) / div;
}
+static unsigned long _clk_ddr_hf_get_rate(struct clk *clk)
+{
+ unsigned long rate;
+ u32 reg, div;
+
+ reg = __raw_readl(MXC_CCM_CBCDR);
+ div = ((reg & MXC_CCM_CBCDR_DDR_PODF_MASK) >>
+ MXC_CCM_CBCDR_DDR_PODF_OFFSET) + 1;
+ rate = clk_get_rate(clk->parent) / div;
+
+ return rate;
+}
+
/* External high frequency clock */
static struct clk ckih_clk = {
.get_rate = get_high_reference_clock_rate,
@@ -846,6 +862,109 @@ static struct clk emi_slow_clk = {
.get_rate = clk_emi_slow_get_rate,
};
+static int clk_ipu_enable(struct clk *clk)
+{
+ u32 reg;
+
+ _clk_ccgr_enable(clk);
+
+ /* Enable handshake with IPU when certain clock rates are changed */
+ reg = __raw_readl(MXC_CCM_CCDR);
+ reg &= ~MXC_CCM_CCDR_IPU_HS_MASK;
+ __raw_writel(reg, MXC_CCM_CCDR);
+
+ /* Enable handshake with IPU when LPM is entered */
+ reg = __raw_readl(MXC_CCM_CLPCR);
+ reg &= ~MXC_CCM_CLPCR_BYPASS_IPU_LPM_HS;
+ __raw_writel(reg, MXC_CCM_CLPCR);
+
+ return 0;
+}
+
+static void clk_ipu_disable(struct clk *clk)
+{
+ u32 reg;
+
+ _clk_ccgr_disable(clk);
+
+ /* Disable handshake with IPU whe dividers are changed */
+ reg = __raw_readl(MXC_CCM_CCDR);
+ reg |= MXC_CCM_CCDR_IPU_HS_MASK;
+ __raw_writel(reg, MXC_CCM_CCDR);
+
+ /* Disable handshake with IPU when LPM is entered */
+ reg = __raw_readl(MXC_CCM_CLPCR);
+ reg |= MXC_CCM_CLPCR_BYPASS_IPU_LPM_HS;
+ __raw_writel(reg, MXC_CCM_CLPCR);
+}
+
+static struct clk ahbmux1_clk = {
+ .parent = &ahb_clk,
+ .secondary = &ahb_max_clk,
+ .enable_reg = MXC_CCM_CCGR0,
+ .enable_shift = MXC_CCM_CCGRx_CG8_OFFSET,
+ .enable = _clk_ccgr_enable,
+ .disable = _clk_ccgr_disable_inwait,
+};
+
+static struct clk ipu_sec_clk = {
+ .parent = &emi_fast_clk,
+ .secondary = &ahbmux1_clk,
+};
+
+static struct clk ddr_hf_clk = {
+ .parent = &pll1_sw_clk,
+ .get_rate = _clk_ddr_hf_get_rate,
+};
+
+static struct clk ddr_clk = {
+ .parent = &ddr_hf_clk,
+};
+
+/* clock definitions for MIPI HSC unit which has been removed
+ * from documentation, but not from hardware
+ */
+static int _clk_hsc_enable(struct clk *clk)
+{
+ u32 reg;
+
+ _clk_ccgr_enable(clk);
+ /* Handshake with IPU when certain clock rates are changed. */
+ reg = __raw_readl(MXC_CCM_CCDR);
+ reg &= ~MXC_CCM_CCDR_HSC_HS_MASK;
+ __raw_writel(reg, MXC_CCM_CCDR);
+
+ reg = __raw_readl(MXC_CCM_CLPCR);
+ reg &= ~MXC_CCM_CLPCR_BYPASS_HSC_LPM_HS;
+ __raw_writel(reg, MXC_CCM_CLPCR);
+
+ return 0;
+}
+
+static void _clk_hsc_disable(struct clk *clk)
+{
+ u32 reg;
+
+ _clk_ccgr_disable(clk);
+ /* No handshake with HSC as its not enabled. */
+ reg = __raw_readl(MXC_CCM_CCDR);
+ reg |= MXC_CCM_CCDR_HSC_HS_MASK;
+ __raw_writel(reg, MXC_CCM_CCDR);
+
+ reg = __raw_readl(MXC_CCM_CLPCR);
+ reg |= MXC_CCM_CLPCR_BYPASS_HSC_LPM_HS;
+ __raw_writel(reg, MXC_CCM_CLPCR);
+}
+
+static struct clk mipi_hsp_clk = {
+ .parent = &ipu_clk,
+ .enable_reg = MXC_CCM_CCGR4,
+ .enable_shift = MXC_CCM_CCGRx_CG6_OFFSET,
+ .enable = _clk_hsc_enable,
+ .disable = _clk_hsc_disable,
+ .secondary = &mipi_hsc1_clk,
+};
+
#define DEFINE_CLOCK_CCGR(name, i, er, es, pfx, p, s) \
static struct clk name = { \
.id = i, \
@@ -1077,6 +1196,23 @@ DEFINE_CLOCK_FULL(esdhc2_ipg_clk, 1, MXC_CCM_CCGR3, MXC_CCM_CCGRx_CG2_OFFSET,
DEFINE_CLOCK_MAX(esdhc2_clk, 1, MXC_CCM_CCGR3, MXC_CCM_CCGRx_CG3_OFFSET,
clk_esdhc2, &pll2_sw_clk, &esdhc2_ipg_clk);
+DEFINE_CLOCK(mipi_esc_clk, 0, MXC_CCM_CCGR4, MXC_CCM_CCGRx_CG5_OFFSET, NULL, NULL, NULL, &pll2_sw_clk);
+DEFINE_CLOCK(mipi_hsc2_clk, 0, MXC_CCM_CCGR4, MXC_CCM_CCGRx_CG4_OFFSET, NULL, NULL, &mipi_esc_clk, &pll2_sw_clk);
+DEFINE_CLOCK(mipi_hsc1_clk, 0, MXC_CCM_CCGR4, MXC_CCM_CCGRx_CG3_OFFSET, NULL, NULL, &mipi_hsc2_clk, &pll2_sw_clk);
+
+/* IPU */
+DEFINE_CLOCK_FULL(ipu_clk, 0, MXC_CCM_CCGR5, MXC_CCM_CCGRx_CG5_OFFSET,
+ NULL, NULL, clk_ipu_enable, clk_ipu_disable, &ahb_clk, &ipu_sec_clk);
+
+DEFINE_CLOCK_FULL(emi_fast_clk, 0, MXC_CCM_CCGR5, MXC_CCM_CCGRx_CG7_OFFSET,
+ NULL, NULL, _clk_ccgr_enable, _clk_ccgr_disable_inwait,
+ &ddr_clk, NULL);
+
+DEFINE_CLOCK(ipu_di0_clk, 0, MXC_CCM_CCGR6, MXC_CCM_CCGRx_CG5_OFFSET,
+ NULL, NULL, &pll3_sw_clk, NULL);
+DEFINE_CLOCK(ipu_di1_clk, 0, MXC_CCM_CCGR6, MXC_CCM_CCGRx_CG6_OFFSET,
+ NULL, NULL, &pll3_sw_clk, NULL);
+
#define _REGISTER_CLOCK(d, n, c) \
{ \
.dev_id = d, \
@@ -1117,6 +1253,10 @@ static struct clk_lookup mx51_lookups[] = {
_REGISTER_CLOCK(NULL, "iim_clk", iim_clk)
_REGISTER_CLOCK("imx2-wdt.0", NULL, dummy_clk)
_REGISTER_CLOCK("imx2-wdt.1", NULL, dummy_clk)
+ _REGISTER_CLOCK(NULL, "mipi_hsp", mipi_hsp_clk)
+ _REGISTER_CLOCK("imx-ipuv3", NULL, ipu_clk)
+ _REGISTER_CLOCK("imx-ipuv3", "di0", ipu_di0_clk)
+ _REGISTER_CLOCK("imx-ipuv3", "di1", ipu_di1_clk)
};
static struct clk_lookup mx53_lookups[] = {
--
1.7.2.3
next prev parent reply other threads:[~2010-12-20 10:50 UTC|newest]
Thread overview: 34+ messages / expand[flat|nested] mbox.gz Atom feed top
2010-12-20 10:48 [PATCH v2] i.MX51 Framebuffer support Sascha Hauer
2010-12-20 10:48 ` Sascha Hauer [this message]
2010-12-20 10:48 ` [PATCH 2/9] ARM i.MX51: rename IPU irqs Sascha Hauer
2010-12-20 10:48 ` [PATCH 3/9] Add a mfd IPUv3 driver Sascha Hauer
2011-01-03 15:42 ` Sascha Hauer
2011-01-07 12:08 ` Samuel Ortiz
2011-01-31 8:20 ` Sascha Hauer
2011-02-01 10:51 ` Samuel Ortiz
2011-02-01 10:59 ` Sascha Hauer
2011-02-01 11:44 ` Samuel Ortiz
2011-02-01 11:51 ` Russell King - ARM Linux
2011-02-01 12:07 ` Arnaud Patard
2011-02-01 12:51 ` Sascha Hauer
2011-02-01 16:47 ` Uwe Kleine-König
2011-02-01 14:03 ` Samuel Ortiz
2010-12-20 10:48 ` [PATCH 4/9] fb: export fb mode db table Sascha Hauer
2010-12-20 10:48 ` [PATCH 5/9] Add i.MX5 framebuffer driver Sascha Hauer
2010-12-20 10:48 ` [PATCH 6/9] ARM i.MX51: Add IPU device support Sascha Hauer
2010-12-20 10:48 ` [PATCH 7/9] ARM i.MX5: Allow to increase max zone order Sascha Hauer
2010-12-20 10:48 ` [PATCH 8/9] ARM i.MX5: increase dma consistent size for IPU support Sascha Hauer
2010-12-20 10:48 ` [PATCH 9/9] ARM i.MX51 babbage: Add framebuffer support Sascha Hauer
2010-12-20 12:35 ` arden jay
2010-12-22 7:56 ` [PATCH v2] i.MX51 Framebuffer support Arnaud Patard
2010-12-22 10:17 ` Peter Korsgaard
2010-12-23 20:45 ` Arnaud Patard
2011-01-05 13:04 ` Julien Boibessot
2011-01-06 9:42 ` Russell King - ARM Linux
2011-01-14 9:17 ` Julien Boibessot
2011-01-06 10:23 ` Sascha Hauer
-- strict thread matches above, loose matches on Subject: below --
2010-12-09 13:47 [PATCH RFC] " Sascha Hauer
2010-12-09 13:47 ` [PATCH 1/9] ARM i.MX51: Add ipu clock support Sascha Hauer
2010-12-15 15:40 ` Arnd Bergmann
2010-12-15 16:34 ` Russell King - ARM Linux
2010-12-15 16:49 ` Arnd Bergmann
2010-12-15 17:12 ` Russell King - ARM Linux
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