summaryrefslogtreecommitdiff
path: root/arch/arm/mach-omap2/mcbsp.c
diff options
context:
space:
mode:
authorLinus Torvalds <torvalds@linux-foundation.org>2010-10-25 13:46:56 -0700
committerLinus Torvalds <torvalds@linux-foundation.org>2010-10-25 13:46:56 -0700
commit7b6181e06841f5ad15c4ff708b967b4db65a64de (patch)
treebdfcf5b74b692f76581156e452d268b64c795200 /arch/arm/mach-omap2/mcbsp.c
parent72e58063d63c5f0a7bf65312f1e3a5ed9bb5c2ff (diff)
parentbc487fb341af05120bccb9f59ce76302391dcc77 (diff)
downloadlwn-7b6181e06841f5ad15c4ff708b967b4db65a64de.tar.gz
lwn-7b6181e06841f5ad15c4ff708b967b4db65a64de.zip
Merge branch 'omap-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tmlind/linux-omap-2.6
* 'omap-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tmlind/linux-omap-2.6: (163 commits) omap: complete removal of machine_desc.io_pg_offst and .phys_io omap: UART: fix wakeup registers for OMAP24xx UART2 omap: Fix spotty MMC voltages ASoC: OMAP4: MCPDM: Remove unnecessary include of plat/control.h serial: omap-serial: fix signess error OMAP3: DMA: Errata i541: sDMA FIFO draining does not finish omap: dma: Fix buffering disable bit setting for omap24xx omap: serial: Fix the boot-up crash/reboot without CONFIG_PM OMAP3: PM: fix scratchpad memory accesses for off-mode omap4: pandaboard: enable the ehci port on pandaboard omap4: pandaboard: Fix the init if CONFIG_MMC_OMAP_HS is not set omap4: pandaboard: remove unused hsmmc definition OMAP: McBSP: Remove null omap44xx ops comment OMAP: McBSP: Swap CLKS source definition OMAP: McBSP: Fix CLKR and FSR signal muxing OMAP2+: clock: reduce the amount of standard debugging while disabling unused clocks OMAP: control: move plat-omap/control.h to mach-omap2/control.h OMAP: split plat-omap/common.c OMAP: McBSP: implement functional clock switching via clock framework OMAP: McBSP: implement McBSP CLKR and FSR signal muxing via mach-omap2/mcbsp.c ... Fixed up trivial conflicts in arch/arm/mach-omap2/ {board-zoom-peripherals.c,devices.c} as per Tony
Diffstat (limited to 'arch/arm/mach-omap2/mcbsp.c')
-rw-r--r--arch/arm/mach-omap2/mcbsp.c105
1 files changed, 73 insertions, 32 deletions
diff --git a/arch/arm/mach-omap2/mcbsp.c b/arch/arm/mach-omap2/mcbsp.c
index 467aae245781..f9c9df5b5ff1 100644
--- a/arch/arm/mach-omap2/mcbsp.c
+++ b/arch/arm/mach-omap2/mcbsp.c
@@ -23,29 +23,86 @@
#include <plat/cpu.h>
#include <plat/mcbsp.h>
-#include "mux.h"
+#include "control.h"
-static void omap2_mcbsp2_mux_setup(void)
+
+/* McBSP internal signal muxing functions */
+
+void omap2_mcbsp1_mux_clkr_src(u8 mux)
{
- omap_mux_init_signal("eac_ac_sclk.mcbsp2_clkx", OMAP_PULL_ENA);
- omap_mux_init_signal("eac_ac_fs.mcbsp2_fsx", OMAP_PULL_ENA);
- omap_mux_init_signal("eac_ac_din.mcbsp2_dr", OMAP_PULL_ENA);
- omap_mux_init_signal("eac_ac_dout.mcbsp2_dx", OMAP_PULL_ENA);
- omap_mux_init_gpio(117, OMAP_PULL_ENA);
- /*
- * TODO: Need to add MUX settings for OMAP 2430 SDP
- */
+ u32 v;
+
+ v = omap_ctrl_readl(OMAP2_CONTROL_DEVCONF0);
+ if (mux == CLKR_SRC_CLKR)
+ v &= ~OMAP2_MCBSP1_CLKR_MASK;
+ else if (mux == CLKR_SRC_CLKX)
+ v |= OMAP2_MCBSP1_CLKR_MASK;
+ omap_ctrl_writel(v, OMAP2_CONTROL_DEVCONF0);
}
+EXPORT_SYMBOL(omap2_mcbsp1_mux_clkr_src);
-static void omap2_mcbsp_request(unsigned int id)
+void omap2_mcbsp1_mux_fsr_src(u8 mux)
{
- if (cpu_is_omap2420() && (id == OMAP_MCBSP2))
- omap2_mcbsp2_mux_setup();
+ u32 v;
+
+ v = omap_ctrl_readl(OMAP2_CONTROL_DEVCONF0);
+ if (mux == FSR_SRC_FSR)
+ v &= ~OMAP2_MCBSP1_FSR_MASK;
+ else if (mux == FSR_SRC_FSX)
+ v |= OMAP2_MCBSP1_FSR_MASK;
+ omap_ctrl_writel(v, OMAP2_CONTROL_DEVCONF0);
}
+EXPORT_SYMBOL(omap2_mcbsp1_mux_fsr_src);
-static struct omap_mcbsp_ops omap2_mcbsp_ops = {
- .request = omap2_mcbsp_request,
-};
+/* McBSP CLKS source switching function */
+
+int omap2_mcbsp_set_clks_src(u8 id, u8 fck_src_id)
+{
+ struct omap_mcbsp *mcbsp;
+ struct clk *fck_src;
+ char *fck_src_name;
+ int r;
+
+ if (!omap_mcbsp_check_valid_id(id)) {
+ pr_err("%s: Invalid id (%d)\n", __func__, id + 1);
+ return -EINVAL;
+ }
+ mcbsp = id_to_mcbsp_ptr(id);
+
+ if (fck_src_id == MCBSP_CLKS_PAD_SRC)
+ fck_src_name = "pad_fck";
+ else if (fck_src_id == MCBSP_CLKS_PRCM_SRC)
+ fck_src_name = "prcm_fck";
+ else
+ return -EINVAL;
+
+ fck_src = clk_get(mcbsp->dev, fck_src_name);
+ if (IS_ERR_OR_NULL(fck_src)) {
+ pr_err("omap-mcbsp: %s: could not clk_get() %s\n", "clks",
+ fck_src_name);
+ return -EINVAL;
+ }
+
+ clk_disable(mcbsp->fclk);
+
+ r = clk_set_parent(mcbsp->fclk, fck_src);
+ if (IS_ERR_VALUE(r)) {
+ pr_err("omap-mcbsp: %s: could not clk_set_parent() to %s\n",
+ "clks", fck_src_name);
+ clk_put(fck_src);
+ return -EINVAL;
+ }
+
+ clk_enable(mcbsp->fclk);
+
+ clk_put(fck_src);
+
+ return 0;
+}
+EXPORT_SYMBOL(omap2_mcbsp_set_clks_src);
+
+
+/* Platform data */
#ifdef CONFIG_ARCH_OMAP2420
static struct omap_mcbsp_platform_data omap2420_mcbsp_pdata[] = {
@@ -55,7 +112,6 @@ static struct omap_mcbsp_platform_data omap2420_mcbsp_pdata[] = {
.dma_tx_sync = OMAP24XX_DMA_MCBSP1_TX,
.rx_irq = INT_24XX_MCBSP1_IRQ_RX,
.tx_irq = INT_24XX_MCBSP1_IRQ_TX,
- .ops = &omap2_mcbsp_ops,
},
{
.phys_base = OMAP24XX_MCBSP2_BASE,
@@ -63,7 +119,6 @@ static struct omap_mcbsp_platform_data omap2420_mcbsp_pdata[] = {
.dma_tx_sync = OMAP24XX_DMA_MCBSP2_TX,
.rx_irq = INT_24XX_MCBSP2_IRQ_RX,
.tx_irq = INT_24XX_MCBSP2_IRQ_TX,
- .ops = &omap2_mcbsp_ops,
},
};
#define OMAP2420_MCBSP_PDATA_SZ ARRAY_SIZE(omap2420_mcbsp_pdata)
@@ -82,7 +137,6 @@ static struct omap_mcbsp_platform_data omap2430_mcbsp_pdata[] = {
.dma_tx_sync = OMAP24XX_DMA_MCBSP1_TX,
.rx_irq = INT_24XX_MCBSP1_IRQ_RX,
.tx_irq = INT_24XX_MCBSP1_IRQ_TX,
- .ops = &omap2_mcbsp_ops,
},
{
.phys_base = OMAP24XX_MCBSP2_BASE,
@@ -90,7 +144,6 @@ static struct omap_mcbsp_platform_data omap2430_mcbsp_pdata[] = {
.dma_tx_sync = OMAP24XX_DMA_MCBSP2_TX,
.rx_irq = INT_24XX_MCBSP2_IRQ_RX,
.tx_irq = INT_24XX_MCBSP2_IRQ_TX,
- .ops = &omap2_mcbsp_ops,
},
{
.phys_base = OMAP2430_MCBSP3_BASE,
@@ -98,7 +151,6 @@ static struct omap_mcbsp_platform_data omap2430_mcbsp_pdata[] = {
.dma_tx_sync = OMAP24XX_DMA_MCBSP3_TX,
.rx_irq = INT_24XX_MCBSP3_IRQ_RX,
.tx_irq = INT_24XX_MCBSP3_IRQ_TX,
- .ops = &omap2_mcbsp_ops,
},
{
.phys_base = OMAP2430_MCBSP4_BASE,
@@ -106,7 +158,6 @@ static struct omap_mcbsp_platform_data omap2430_mcbsp_pdata[] = {
.dma_tx_sync = OMAP24XX_DMA_MCBSP4_TX,
.rx_irq = INT_24XX_MCBSP4_IRQ_RX,
.tx_irq = INT_24XX_MCBSP4_IRQ_TX,
- .ops = &omap2_mcbsp_ops,
},
{
.phys_base = OMAP2430_MCBSP5_BASE,
@@ -114,7 +165,6 @@ static struct omap_mcbsp_platform_data omap2430_mcbsp_pdata[] = {
.dma_tx_sync = OMAP24XX_DMA_MCBSP5_TX,
.rx_irq = INT_24XX_MCBSP5_IRQ_RX,
.tx_irq = INT_24XX_MCBSP5_IRQ_TX,
- .ops = &omap2_mcbsp_ops,
},
};
#define OMAP2430_MCBSP_PDATA_SZ ARRAY_SIZE(omap2430_mcbsp_pdata)
@@ -133,7 +183,6 @@ static struct omap_mcbsp_platform_data omap34xx_mcbsp_pdata[] = {
.dma_tx_sync = OMAP24XX_DMA_MCBSP1_TX,
.rx_irq = INT_24XX_MCBSP1_IRQ_RX,
.tx_irq = INT_24XX_MCBSP1_IRQ_TX,
- .ops = &omap2_mcbsp_ops,
.buffer_size = 0x80, /* The FIFO has 128 locations */
},
{
@@ -143,7 +192,6 @@ static struct omap_mcbsp_platform_data omap34xx_mcbsp_pdata[] = {
.dma_tx_sync = OMAP24XX_DMA_MCBSP2_TX,
.rx_irq = INT_24XX_MCBSP2_IRQ_RX,
.tx_irq = INT_24XX_MCBSP2_IRQ_TX,
- .ops = &omap2_mcbsp_ops,
.buffer_size = 0x500, /* The FIFO has 1024 + 256 locations */
},
{
@@ -153,7 +201,6 @@ static struct omap_mcbsp_platform_data omap34xx_mcbsp_pdata[] = {
.dma_tx_sync = OMAP24XX_DMA_MCBSP3_TX,
.rx_irq = INT_24XX_MCBSP3_IRQ_RX,
.tx_irq = INT_24XX_MCBSP3_IRQ_TX,
- .ops = &omap2_mcbsp_ops,
.buffer_size = 0x80, /* The FIFO has 128 locations */
},
{
@@ -162,7 +209,6 @@ static struct omap_mcbsp_platform_data omap34xx_mcbsp_pdata[] = {
.dma_tx_sync = OMAP24XX_DMA_MCBSP4_TX,
.rx_irq = INT_24XX_MCBSP4_IRQ_RX,
.tx_irq = INT_24XX_MCBSP4_IRQ_TX,
- .ops = &omap2_mcbsp_ops,
.buffer_size = 0x80, /* The FIFO has 128 locations */
},
{
@@ -171,7 +217,6 @@ static struct omap_mcbsp_platform_data omap34xx_mcbsp_pdata[] = {
.dma_tx_sync = OMAP24XX_DMA_MCBSP5_TX,
.rx_irq = INT_24XX_MCBSP5_IRQ_RX,
.tx_irq = INT_24XX_MCBSP5_IRQ_TX,
- .ops = &omap2_mcbsp_ops,
.buffer_size = 0x80, /* The FIFO has 128 locations */
},
};
@@ -189,28 +234,24 @@ static struct omap_mcbsp_platform_data omap44xx_mcbsp_pdata[] = {
.dma_rx_sync = OMAP44XX_DMA_MCBSP1_RX,
.dma_tx_sync = OMAP44XX_DMA_MCBSP1_TX,
.tx_irq = OMAP44XX_IRQ_MCBSP1,
- .ops = &omap2_mcbsp_ops,
},
{
.phys_base = OMAP44XX_MCBSP2_BASE,
.dma_rx_sync = OMAP44XX_DMA_MCBSP2_RX,
.dma_tx_sync = OMAP44XX_DMA_MCBSP2_TX,
.tx_irq = OMAP44XX_IRQ_MCBSP2,
- .ops = &omap2_mcbsp_ops,
},
{
.phys_base = OMAP44XX_MCBSP3_BASE,
.dma_rx_sync = OMAP44XX_DMA_MCBSP3_RX,
.dma_tx_sync = OMAP44XX_DMA_MCBSP3_TX,
.tx_irq = OMAP44XX_IRQ_MCBSP3,
- .ops = &omap2_mcbsp_ops,
},
{
.phys_base = OMAP44XX_MCBSP4_BASE,
.dma_rx_sync = OMAP44XX_DMA_MCBSP4_RX,
.dma_tx_sync = OMAP44XX_DMA_MCBSP4_TX,
.tx_irq = OMAP44XX_IRQ_MCBSP4,
- .ops = &omap2_mcbsp_ops,
},
};
#define OMAP44XX_MCBSP_PDATA_SZ ARRAY_SIZE(omap44xx_mcbsp_pdata)