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authorLinus Walleij <linus.walleij@stericsson.com>2009-07-02 00:27:57 +0100
committerRussell King <rmk+kernel@arm.linux.org.uk>2009-07-02 17:24:39 +0100
commit4ebfc3dba59fb84b315ebb0059347dc9342a32f1 (patch)
tree352f72b50e788a3846f5a6e408315457d3485706 /arch/arm/mach-u300/clock.c
parent9be4b17c4c900f634ab9be3d13e116aa31edb7cb (diff)
[ARM] 5581/1: U300 clock updates
This adds a few default locks to the clocks (the clocks were used before the locks were initialized by code), then renames the clocks a bit to fit with the latest driver names (some changed during review). Lastly it moves the initialization of the clock debugfs entry to module_init() initcall level since the debugfs isn't up in core_initcall(). Signed-off-by: Linus Walleij <linus.walleij@stericsson.com> Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
Diffstat (limited to 'arch/arm/mach-u300/clock.c')
-rw-r--r--arch/arm/mach-u300/clock.c121
1 files changed, 80 insertions, 41 deletions
diff --git a/arch/arm/mach-u300/clock.c b/arch/arm/mach-u300/clock.c
index 5cd04d6751b3..111f7ea32b38 100644
--- a/arch/arm/mach-u300/clock.c
+++ b/arch/arm/mach-u300/clock.c
@@ -24,6 +24,7 @@
#include <linux/init.h>
#include <linux/timer.h>
#include <linux/io.h>
+#include <linux/seq_file.h>
#include <asm/clkdev.h>
#include <mach/hardware.h>
@@ -702,6 +703,7 @@ static struct clk amba_clk = {
.rate = 52000000, /* this varies! */
.hw_ctrld = true,
.reset = false,
+ .lock = __SPIN_LOCK_UNLOCKED(amba_clk.lock),
};
/*
@@ -720,6 +722,7 @@ static struct clk cpu_clk = {
.set_rate = clk_set_rate_cpuclk,
.get_rate = clk_get_rate_cpuclk,
.round_rate = clk_round_rate_cpuclk,
+ .lock = __SPIN_LOCK_UNLOCKED(cpu_clk.lock),
};
static struct clk nandif_clk = {
@@ -732,6 +735,7 @@ static struct clk nandif_clk = {
.clk_val = U300_SYSCON_SBCER_NANDIF_CLK_EN,
.enable = syscon_clk_enable,
.disable = syscon_clk_disable,
+ .lock = __SPIN_LOCK_UNLOCKED(nandif_clk.lock),
};
static struct clk semi_clk = {
@@ -744,6 +748,7 @@ static struct clk semi_clk = {
.clk_val = U300_SYSCON_SBCER_SEMI_CLK_EN,
.enable = syscon_clk_enable,
.disable = syscon_clk_disable,
+ .lock = __SPIN_LOCK_UNLOCKED(semi_clk.lock),
};
#ifdef CONFIG_MACH_U300_BS335
@@ -758,6 +763,7 @@ static struct clk isp_clk = {
.clk_val = U300_SYSCON_SBCER_ISP_CLK_EN,
.enable = syscon_clk_enable,
.disable = syscon_clk_disable,
+ .lock = __SPIN_LOCK_UNLOCKED(isp_clk.lock),
};
static struct clk cds_clk = {
@@ -771,6 +777,7 @@ static struct clk cds_clk = {
.clk_val = U300_SYSCON_SBCER_CDS_CLK_EN,
.enable = syscon_clk_enable,
.disable = syscon_clk_disable,
+ .lock = __SPIN_LOCK_UNLOCKED(cds_clk.lock),
};
#endif
@@ -785,6 +792,7 @@ static struct clk dma_clk = {
.clk_val = U300_SYSCON_SBCER_DMAC_CLK_EN,
.enable = syscon_clk_enable,
.disable = syscon_clk_disable,
+ .lock = __SPIN_LOCK_UNLOCKED(dma_clk.lock),
};
static struct clk aaif_clk = {
@@ -798,6 +806,7 @@ static struct clk aaif_clk = {
.clk_val = U300_SYSCON_SBCER_AAIF_CLK_EN,
.enable = syscon_clk_enable,
.disable = syscon_clk_disable,
+ .lock = __SPIN_LOCK_UNLOCKED(aaif_clk.lock),
};
static struct clk apex_clk = {
@@ -811,6 +820,7 @@ static struct clk apex_clk = {
.clk_val = U300_SYSCON_SBCER_APEX_CLK_EN,
.enable = syscon_clk_enable,
.disable = syscon_clk_disable,
+ .lock = __SPIN_LOCK_UNLOCKED(apex_clk.lock),
};
static struct clk video_enc_clk = {
@@ -825,6 +835,7 @@ static struct clk video_enc_clk = {
.clk_val = U300_SYSCON_SBCER_VIDEO_ENC_CLK_EN,
.enable = syscon_clk_enable,
.disable = syscon_clk_disable,
+ .lock = __SPIN_LOCK_UNLOCKED(video_enc_clk.lock),
};
static struct clk xgam_clk = {
@@ -839,6 +850,7 @@ static struct clk xgam_clk = {
.get_rate = clk_get_rate_xgamclk,
.enable = syscon_clk_enable,
.disable = syscon_clk_disable,
+ .lock = __SPIN_LOCK_UNLOCKED(xgam_clk.lock),
};
/* This clock is used to activate the video encoder */
@@ -854,6 +866,7 @@ static struct clk ahb_clk = {
.enable = syscon_clk_enable,
.disable = syscon_clk_disable,
.get_rate = clk_get_rate_ahb_clk,
+ .lock = __SPIN_LOCK_UNLOCKED(ahb_clk.lock),
};
@@ -871,6 +884,7 @@ static struct clk ahb_subsys_clk = {
.enable = syscon_clk_enable,
.disable = syscon_clk_disable,
.get_rate = clk_get_rate_ahb_clk,
+ .lock = __SPIN_LOCK_UNLOCKED(ahb_subsys_clk.lock),
};
static struct clk intcon_clk = {
@@ -882,6 +896,8 @@ static struct clk intcon_clk = {
.res_reg = U300_SYSCON_VBASE + U300_SYSCON_RRR,
.res_mask = U300_SYSCON_RRR_INTCON_RESET_EN,
/* INTCON can be reset but not clock-gated */
+ .lock = __SPIN_LOCK_UNLOCKED(intcon_clk.lock),
+
};
static struct clk mspro_clk = {
@@ -895,6 +911,7 @@ static struct clk mspro_clk = {
.clk_val = U300_SYSCON_SBCER_MSPRO_CLK_EN,
.enable = syscon_clk_enable,
.disable = syscon_clk_disable,
+ .lock = __SPIN_LOCK_UNLOCKED(mspro_clk.lock),
};
static struct clk emif_clk = {
@@ -909,6 +926,7 @@ static struct clk emif_clk = {
.enable = syscon_clk_enable,
.disable = syscon_clk_disable,
.get_rate = clk_get_rate_emif_clk,
+ .lock = __SPIN_LOCK_UNLOCKED(emif_clk.lock),
};
@@ -926,6 +944,7 @@ static struct clk fast_clk = {
.clk_val = U300_SYSCON_SBCER_FAST_BRIDGE_CLK_EN,
.enable = syscon_clk_enable,
.disable = syscon_clk_disable,
+ .lock = __SPIN_LOCK_UNLOCKED(fast_clk.lock),
};
static struct clk mmcsd_clk = {
@@ -942,6 +961,7 @@ static struct clk mmcsd_clk = {
.round_rate = clk_round_rate_mclk,
.disable = syscon_clk_disable,
.enable = syscon_clk_enable,
+ .lock = __SPIN_LOCK_UNLOCKED(mmcsd_clk.lock),
};
static struct clk i2s0_clk = {
@@ -956,6 +976,7 @@ static struct clk i2s0_clk = {
.enable = syscon_clk_enable,
.disable = syscon_clk_disable,
.get_rate = clk_get_rate_i2s_i2c_spi,
+ .lock = __SPIN_LOCK_UNLOCKED(i2s0_clk.lock),
};
static struct clk i2s1_clk = {
@@ -970,6 +991,7 @@ static struct clk i2s1_clk = {
.enable = syscon_clk_enable,
.disable = syscon_clk_disable,
.get_rate = clk_get_rate_i2s_i2c_spi,
+ .lock = __SPIN_LOCK_UNLOCKED(i2s1_clk.lock),
};
static struct clk i2c0_clk = {
@@ -984,6 +1006,7 @@ static struct clk i2c0_clk = {
.enable = syscon_clk_enable,
.disable = syscon_clk_disable,
.get_rate = clk_get_rate_i2s_i2c_spi,
+ .lock = __SPIN_LOCK_UNLOCKED(i2c0_clk.lock),
};
static struct clk i2c1_clk = {
@@ -998,6 +1021,7 @@ static struct clk i2c1_clk = {
.enable = syscon_clk_enable,
.disable = syscon_clk_disable,
.get_rate = clk_get_rate_i2s_i2c_spi,
+ .lock = __SPIN_LOCK_UNLOCKED(i2c1_clk.lock),
};
static struct clk spi_clk = {
@@ -1012,6 +1036,7 @@ static struct clk spi_clk = {
.enable = syscon_clk_enable,
.disable = syscon_clk_disable,
.get_rate = clk_get_rate_i2s_i2c_spi,
+ .lock = __SPIN_LOCK_UNLOCKED(spi_clk.lock),
};
#ifdef CONFIG_MACH_U300_BS335
@@ -1026,6 +1051,7 @@ static struct clk uart1_clk = {
.clk_val = U300_SYSCON_SBCER_UART1_CLK_EN,
.enable = syscon_clk_enable,
.disable = syscon_clk_disable,
+ .lock = __SPIN_LOCK_UNLOCKED(uart1_clk.lock),
};
#endif
@@ -1044,6 +1070,7 @@ static struct clk slow_clk = {
.clk_val = U300_SYSCON_SBCER_SLOW_BRIDGE_CLK_EN,
.enable = syscon_clk_enable,
.disable = syscon_clk_disable,
+ .lock = __SPIN_LOCK_UNLOCKED(slow_clk.lock),
};
/* TODO: implement SYSCON clock? */
@@ -1055,6 +1082,7 @@ static struct clk wdog_clk = {
.rate = 32768,
.reset = false,
/* This is always on, cannot be enabled/disabled or reset */
+ .lock = __SPIN_LOCK_UNLOCKED(wdog_clk.lock),
};
/* This one is hardwired to PLL13 */
@@ -1069,6 +1097,7 @@ static struct clk uart_clk = {
.clk_val = U300_SYSCON_SBCER_UART_CLK_EN,
.enable = syscon_clk_enable,
.disable = syscon_clk_disable,
+ .lock = __SPIN_LOCK_UNLOCKED(uart_clk.lock),
};
static struct clk keypad_clk = {
@@ -1082,6 +1111,7 @@ static struct clk keypad_clk = {
.clk_val = U300_SYSCON_SBCER_KEYPAD_CLK_EN,
.enable = syscon_clk_enable,
.disable = syscon_clk_disable,
+ .lock = __SPIN_LOCK_UNLOCKED(keypad_clk.lock),
};
static struct clk gpio_clk = {
@@ -1095,6 +1125,7 @@ static struct clk gpio_clk = {
.clk_val = U300_SYSCON_SBCER_GPIO_CLK_EN,
.enable = syscon_clk_enable,
.disable = syscon_clk_disable,
+ .lock = __SPIN_LOCK_UNLOCKED(gpio_clk.lock),
};
static struct clk rtc_clk = {
@@ -1106,6 +1137,7 @@ static struct clk rtc_clk = {
.res_reg = U300_SYSCON_VBASE + U300_SYSCON_RSR,
.res_mask = U300_SYSCON_RSR_RTC_RESET_EN,
/* This clock is always on, cannot be enabled/disabled */
+ .lock = __SPIN_LOCK_UNLOCKED(rtc_clk.lock),
};
static struct clk bustr_clk = {
@@ -1119,6 +1151,7 @@ static struct clk bustr_clk = {
.clk_val = U300_SYSCON_SBCER_BTR_CLK_EN,
.enable = syscon_clk_enable,
.disable = syscon_clk_disable,
+ .lock = __SPIN_LOCK_UNLOCKED(bustr_clk.lock),
};
static struct clk evhist_clk = {
@@ -1132,6 +1165,7 @@ static struct clk evhist_clk = {
.clk_val = U300_SYSCON_SBCER_EH_CLK_EN,
.enable = syscon_clk_enable,
.disable = syscon_clk_disable,
+ .lock = __SPIN_LOCK_UNLOCKED(evhist_clk.lock),
};
static struct clk timer_clk = {
@@ -1145,6 +1179,7 @@ static struct clk timer_clk = {
.clk_val = U300_SYSCON_SBCER_ACC_TMR_CLK_EN,
.enable = syscon_clk_enable,
.disable = syscon_clk_disable,
+ .lock = __SPIN_LOCK_UNLOCKED(timer_clk.lock),
};
static struct clk app_timer_clk = {
@@ -1158,6 +1193,7 @@ static struct clk app_timer_clk = {
.clk_val = U300_SYSCON_SBCER_APP_TMR_CLK_EN,
.enable = syscon_clk_enable,
.disable = syscon_clk_disable,
+ .lock = __SPIN_LOCK_UNLOCKED(app_timer_clk.lock),
};
#ifdef CONFIG_MACH_U300_BS335
@@ -1172,6 +1208,7 @@ static struct clk ppm_clk = {
.clk_val = U300_SYSCON_SBCER_PPM_CLK_EN,
.enable = syscon_clk_enable,
.disable = syscon_clk_disable,
+ .lock = __SPIN_LOCK_UNLOCKED(ppm_clk.lock),
};
#endif
@@ -1187,53 +1224,53 @@ static struct clk ppm_clk = {
*/
static struct clk_lookup lookups[] = {
/* Connected directly to the AMBA bus */
- DEF_LOOKUP("amba", &amba_clk),
- DEF_LOOKUP("cpu", &cpu_clk),
- DEF_LOOKUP("nandif", &nandif_clk),
- DEF_LOOKUP("semi", &semi_clk),
+ DEF_LOOKUP("amba", &amba_clk),
+ DEF_LOOKUP("cpu", &cpu_clk),
+ DEF_LOOKUP("fsmc", &nandif_clk),
+ DEF_LOOKUP("semi", &semi_clk),
#ifdef CONFIG_MACH_U300_BS335
- DEF_LOOKUP("isp", &isp_clk),
- DEF_LOOKUP("cds", &cds_clk),
+ DEF_LOOKUP("isp", &isp_clk),
+ DEF_LOOKUP("cds", &cds_clk),
#endif
- DEF_LOOKUP("dma", &dma_clk),
- DEF_LOOKUP("aaif", &aaif_clk),
- DEF_LOOKUP("apex", &apex_clk),
+ DEF_LOOKUP("dma", &dma_clk),
+ DEF_LOOKUP("msl", &aaif_clk),
+ DEF_LOOKUP("apex", &apex_clk),
DEF_LOOKUP("video_enc", &video_enc_clk),
- DEF_LOOKUP("xgam", &xgam_clk),
- DEF_LOOKUP("ahb", &ahb_clk),
+ DEF_LOOKUP("xgam", &xgam_clk),
+ DEF_LOOKUP("ahb", &ahb_clk),
/* AHB bridge clocks */
- DEF_LOOKUP("ahb", &ahb_subsys_clk),
- DEF_LOOKUP("intcon", &intcon_clk),
- DEF_LOOKUP("mspro", &mspro_clk),
- DEF_LOOKUP("pl172", &emif_clk),
+ DEF_LOOKUP("ahb_subsys", &ahb_subsys_clk),
+ DEF_LOOKUP("intcon", &intcon_clk),
+ DEF_LOOKUP("mspro", &mspro_clk),
+ DEF_LOOKUP("pl172", &emif_clk),
/* FAST bridge clocks */
- DEF_LOOKUP("fast", &fast_clk),
- DEF_LOOKUP("mmci", &mmcsd_clk),
+ DEF_LOOKUP("fast", &fast_clk),
+ DEF_LOOKUP("mmci", &mmcsd_clk),
/*
* The .0 and .1 identifiers on these comes from the platform device
* .id field and are assigned when the platform devices are registered.
*/
- DEF_LOOKUP("i2s.0", &i2s0_clk),
- DEF_LOOKUP("i2s.1", &i2s1_clk),
- DEF_LOOKUP("stddci2c.0", &i2c0_clk),
- DEF_LOOKUP("stddci2c.1", &i2c1_clk),
- DEF_LOOKUP("pl022", &spi_clk),
+ DEF_LOOKUP("i2s.0", &i2s0_clk),
+ DEF_LOOKUP("i2s.1", &i2s1_clk),
+ DEF_LOOKUP("stu300.0", &i2c0_clk),
+ DEF_LOOKUP("stu300.1", &i2c1_clk),
+ DEF_LOOKUP("pl022", &spi_clk),
#ifdef CONFIG_MACH_U300_BS335
- DEF_LOOKUP("uart1", &uart1_clk),
+ DEF_LOOKUP("uart1", &uart1_clk),
#endif
/* SLOW bridge clocks */
- DEF_LOOKUP("slow", &slow_clk),
- DEF_LOOKUP("wdog", &wdog_clk),
- DEF_LOOKUP("uart0", &uart_clk),
- DEF_LOOKUP("apptimer", &app_timer_clk),
- DEF_LOOKUP("keypad", &keypad_clk),
+ DEF_LOOKUP("slow", &slow_clk),
+ DEF_LOOKUP("coh901327_wdog", &wdog_clk),
+ DEF_LOOKUP("uart0", &uart_clk),
+ DEF_LOOKUP("apptimer", &app_timer_clk),
+ DEF_LOOKUP("coh901461-keypad", &keypad_clk),
DEF_LOOKUP("u300-gpio", &gpio_clk),
- DEF_LOOKUP("rtc0", &rtc_clk),
- DEF_LOOKUP("bustr", &bustr_clk),
- DEF_LOOKUP("evhist", &evhist_clk),
- DEF_LOOKUP("timer", &timer_clk),
+ DEF_LOOKUP("rtc-coh901331", &rtc_clk),
+ DEF_LOOKUP("bustr", &bustr_clk),
+ DEF_LOOKUP("evhist", &evhist_clk),
+ DEF_LOOKUP("timer", &timer_clk),
#ifdef CONFIG_MACH_U300_BS335
- DEF_LOOKUP("ppm", &ppm_clk),
+ DEF_LOOKUP("ppm", &ppm_clk),
#endif
};
@@ -1427,16 +1464,20 @@ static const struct file_operations u300_clocks_operations = {
.release = single_release,
};
-static void init_clk_read_procfs(void)
+static int __init init_clk_read_debugfs(void)
{
/* Expose a simple debugfs interface to view all clocks */
(void) debugfs_create_file("u300_clocks", S_IFREG | S_IRUGO,
- NULL, NULL, &u300_clocks_operations);
-}
-#else
-static inline void init_clk_read_procfs(void)
-{
+ NULL, NULL,
+ &u300_clocks_operations);
+ return 0;
}
+/*
+ * This needs to come in after the core_initcall() for the
+ * overall clocks, because debugfs is not available until
+ * the subsystems come up.
+ */
+module_init(init_clk_read_debugfs);
#endif
static int __init u300_clock_init(void)
@@ -1462,8 +1503,6 @@ static int __init u300_clock_init(void)
clk_register();
- init_clk_read_procfs();
-
/*
* Some of these may be on when we boot the system so make sure they
* are turned OFF.