aboutsummaryrefslogtreecommitdiffstats
path: root/arch/arm/mach-tcc8k
diff options
context:
space:
mode:
Diffstat (limited to 'arch/arm/mach-tcc8k')
-rw-r--r--arch/arm/mach-tcc8k/Kconfig11
-rw-r--r--arch/arm/mach-tcc8k/Makefile9
-rw-r--r--arch/arm/mach-tcc8k/Makefile.boot3
-rw-r--r--arch/arm/mach-tcc8k/board-tcc8000-sdk.c64
-rw-r--r--arch/arm/mach-tcc8k/clock.c567
-rw-r--r--arch/arm/mach-tcc8k/common.h15
-rw-r--r--arch/arm/mach-tcc8k/devices.c239
-rw-r--r--arch/arm/mach-tcc8k/io.c62
-rw-r--r--arch/arm/mach-tcc8k/irq.c111
-rw-r--r--arch/arm/mach-tcc8k/time.c149
10 files changed, 1230 insertions, 0 deletions
diff --git a/arch/arm/mach-tcc8k/Kconfig b/arch/arm/mach-tcc8k/Kconfig
new file mode 100644
index 000000000000..ad86415d1577
--- /dev/null
+++ b/arch/arm/mach-tcc8k/Kconfig
@@ -0,0 +1,11 @@
1if ARCH_TCC8K
2
3comment "TCC8000 systems:"
4
5config MACH_TCC8000_SDK
6 bool "Telechips TCC8000-SDK development kit"
7 default y
8 help
9 Support for the Telechips TCC8000-SDK board.
10
11endif
diff --git a/arch/arm/mach-tcc8k/Makefile b/arch/arm/mach-tcc8k/Makefile
new file mode 100644
index 000000000000..9bacf31e49ba
--- /dev/null
+++ b/arch/arm/mach-tcc8k/Makefile
@@ -0,0 +1,9 @@
1#
2# Makefile for TCC8K boards and common files.
3#
4
5# Common support
6obj-y += clock.o irq.o time.o io.o devices.o
7
8# Board specific support
9obj-$(CONFIG_MACH_TCC8000_SDK) += board-tcc8000-sdk.o
diff --git a/arch/arm/mach-tcc8k/Makefile.boot b/arch/arm/mach-tcc8k/Makefile.boot
new file mode 100644
index 000000000000..f135c9deae10
--- /dev/null
+++ b/arch/arm/mach-tcc8k/Makefile.boot
@@ -0,0 +1,3 @@
1 zreladdr-y := 0x20008000
2params_phys-y := 0x20000100
3initrd_phys-y := 0x20800000
diff --git a/arch/arm/mach-tcc8k/board-tcc8000-sdk.c b/arch/arm/mach-tcc8k/board-tcc8000-sdk.c
new file mode 100644
index 000000000000..4e42555b2009
--- /dev/null
+++ b/arch/arm/mach-tcc8k/board-tcc8000-sdk.c
@@ -0,0 +1,64 @@
1/*
2 * Copyright (C) 2009 Hans J. Koch <hjk@linutronix.de>
3 *
4 * This program is free software; you can redistribute it and/or modify
5 * it under the terms of the GNU General Public License version 2 as
6 * published by the Free Software Foundation.
7 */
8
9#include <linux/init.h>
10#include <linux/kernel.h>
11#include <linux/platform_device.h>
12
13#include <asm/mach-types.h>
14
15#include <asm/mach/arch.h>
16#include <asm/mach/map.h>
17#include <asm/mach/time.h>
18
19#include <mach/clock.h>
20
21#include "common.h"
22
23#define XI_FREQUENCY 12000000
24#define XTI_FREQUENCY 32768
25
26#ifdef CONFIG_MTD_NAND_TCC
27/* NAND */
28static struct tcc_nand_platform_data tcc8k_sdk_nand_data = {
29 .width = 1,
30 .hw_ecc = 0,
31};
32#endif
33
34static void __init tcc8k_init(void)
35{
36#ifdef CONFIG_MTD_NAND_TCC
37 tcc_nand_device.dev.platform_data = &tcc8k_sdk_nand_data;
38 platform_device_register(&tcc_nand_device);
39#endif
40}
41
42static void __init tcc8k_init_timer(void)
43{
44 tcc_clocks_init(XI_FREQUENCY, XTI_FREQUENCY);
45}
46
47static struct sys_timer tcc8k_timer = {
48 .init = tcc8k_init_timer,
49};
50
51static void __init tcc8k_map_io(void)
52{
53 tcc8k_map_common_io();
54}
55
56MACHINE_START(TCC8000_SDK, "Telechips TCC8000-SDK Demo Board")
57 .phys_io = 0x90000000,
58 .io_pg_offst = ((0xf1000000) >> 18) & 0xfffc,
59 .boot_params = PHYS_OFFSET + 0x00000100,
60 .map_io = tcc8k_map_io,
61 .init_irq = tcc8k_init_irq,
62 .init_machine = tcc8k_init,
63 .timer = &tcc8k_timer,
64MACHINE_END
diff --git a/arch/arm/mach-tcc8k/clock.c b/arch/arm/mach-tcc8k/clock.c
new file mode 100644
index 000000000000..ba32a15127ab
--- /dev/null
+++ b/arch/arm/mach-tcc8k/clock.c
@@ -0,0 +1,567 @@
1/*
2 * Lowlevel clock handling for Telechips TCC8xxx SoCs
3 *
4 * Copyright (C) 2010 by Hans J. Koch <hjk@linutronix.de>
5 *
6 * Licensed under the terms of the GPL v2
7 */
8
9#include <linux/clk.h>
10#include <linux/delay.h>
11#include <linux/err.h>
12#include <linux/io.h>
13#include <linux/module.h>
14#include <linux/spinlock.h>
15
16#include <asm/clkdev.h>
17
18#include <mach/clock.h>
19#include <mach/irqs.h>
20#include <mach/tcc8k-regs.h>
21
22#include "common.h"
23
24#define BCLKCTR0 (CKC_BASE + BCLKCTR0_OFFS)
25#define BCLKCTR1 (CKC_BASE + BCLKCTR1_OFFS)
26
27#define ACLKREF (CKC_BASE + ACLKREF_OFFS)
28#define ACLKUART0 (CKC_BASE + ACLKUART0_OFFS)
29#define ACLKUART1 (CKC_BASE + ACLKUART1_OFFS)
30#define ACLKUART2 (CKC_BASE + ACLKUART2_OFFS)
31#define ACLKUART3 (CKC_BASE + ACLKUART3_OFFS)
32#define ACLKUART4 (CKC_BASE + ACLKUART4_OFFS)
33#define ACLKI2C (CKC_BASE + ACLKI2C_OFFS)
34#define ACLKADC (CKC_BASE + ACLKADC_OFFS)
35#define ACLKUSBH (CKC_BASE + ACLKUSBH_OFFS)
36#define ACLKLCD (CKC_BASE + ACLKLCD_OFFS)
37#define ACLKSDH0 (CKC_BASE + ACLKSDH0_OFFS)
38#define ACLKSDH1 (CKC_BASE + ACLKSDH1_OFFS)
39#define ACLKSPI0 (CKC_BASE + ACLKSPI0_OFFS)
40#define ACLKSPI1 (CKC_BASE + ACLKSPI1_OFFS)
41#define ACLKSPDIF (CKC_BASE + ACLKSPDIF_OFFS)
42#define ACLKC3DEC (CKC_BASE + ACLKC3DEC_OFFS)
43#define ACLKCAN0 (CKC_BASE + ACLKCAN0_OFFS)
44#define ACLKCAN1 (CKC_BASE + ACLKCAN1_OFFS)
45#define ACLKGSB0 (CKC_BASE + ACLKGSB0_OFFS)
46#define ACLKGSB1 (CKC_BASE + ACLKGSB1_OFFS)
47#define ACLKGSB2 (CKC_BASE + ACLKGSB2_OFFS)
48#define ACLKGSB3 (CKC_BASE + ACLKGSB3_OFFS)
49#define ACLKUSBH (CKC_BASE + ACLKUSBH_OFFS)
50#define ACLKTCT (CKC_BASE + ACLKTCT_OFFS)
51#define ACLKTCX (CKC_BASE + ACLKTCX_OFFS)
52#define ACLKTCZ (CKC_BASE + ACLKTCZ_OFFS)
53
54/* Crystal frequencies */
55static unsigned long xi_rate, xti_rate;
56
57static void __iomem *pll_cfg_addr(int pll)
58{
59 switch (pll) {
60 case 0: return (CKC_BASE + PLL0CFG_OFFS);
61 case 1: return (CKC_BASE + PLL1CFG_OFFS);
62 case 2: return (CKC_BASE + PLL2CFG_OFFS);
63 default:
64 BUG();
65 }
66}
67
68static int pll_enable(int pll, int enable)
69{
70 u32 reg;
71 void __iomem *addr = pll_cfg_addr(pll);
72
73 reg = __raw_readl(addr);
74 if (enable)
75 reg &= ~PLLxCFG_PD;
76 else
77 reg |= PLLxCFG_PD;
78
79 __raw_writel(reg, addr);
80 return 0;
81}
82
83static int xi_enable(int enable)
84{
85 u32 reg;
86
87 reg = __raw_readl(CKC_BASE + CLKCTRL_OFFS);
88 if (enable)
89 reg |= CLKCTRL_XE;
90 else
91 reg &= ~CLKCTRL_XE;
92
93 __raw_writel(reg, CKC_BASE + CLKCTRL_OFFS);
94 return 0;
95}
96
97static int root_clk_enable(enum root_clks src)
98{
99 switch (src) {
100 case CLK_SRC_PLL0: return pll_enable(0, 1);
101 case CLK_SRC_PLL1: return pll_enable(1, 1);
102 case CLK_SRC_PLL2: return pll_enable(2, 1);
103 case CLK_SRC_XI: return xi_enable(1);
104 default:
105 BUG();
106 }
107 return 0;
108}
109
110static int root_clk_disable(enum root_clks root_src)
111{
112 switch (root_src) {
113 case CLK_SRC_PLL0: return pll_enable(0, 0);
114 case CLK_SRC_PLL1: return pll_enable(1, 0);
115 case CLK_SRC_PLL2: return pll_enable(2, 0);
116 case CLK_SRC_XI: return xi_enable(0);
117 default:
118 BUG();
119 }
120 return 0;
121}
122
123static int enable_clk(struct clk *clk)
124{
125 u32 reg;
126
127 if (clk->root_id != CLK_SRC_NOROOT)
128 return root_clk_enable(clk->root_id);
129
130 if (clk->aclkreg) {
131 reg = __raw_readl(clk->aclkreg);
132 reg |= ACLK_EN;
133 __raw_writel(reg, clk->aclkreg);
134 }
135 if (clk->bclkctr) {
136 reg = __raw_readl(clk->bclkctr);
137 reg |= 1 << clk->bclk_shift;
138 __raw_writel(reg, clk->bclkctr);
139 }
140 return 0;
141}
142
143static void disable_clk(struct clk *clk)
144{
145 u32 reg;
146
147 if (clk->root_id != CLK_SRC_NOROOT) {
148 root_clk_disable(clk->root_id);
149 return;
150 }
151
152 if (clk->bclkctr) {
153 reg = __raw_readl(clk->bclkctr);
154 reg &= ~(1 << clk->bclk_shift);
155 __raw_writel(reg, clk->bclkctr);
156 }
157 if (clk->aclkreg) {
158 reg = __raw_readl(clk->aclkreg);
159 reg &= ~ACLK_EN;
160 __raw_writel(reg, clk->aclkreg);
161 }
162}
163
164static unsigned long get_rate_pll(int pll)
165{
166 u32 reg;
167 unsigned long s, m, p;
168 void __iomem *addr = pll_cfg_addr(pll);
169
170 reg = __raw_readl(addr);
171 s = (reg >> 16) & 0x07;
172 m = (reg >> 8) & 0xff;
173 p = reg & 0x3f;
174
175 return (m * xi_rate) / (p * (1 << s));
176}
177
178static unsigned long get_rate_pll_div(int pll)
179{
180 u32 reg;
181 unsigned long div = 0;
182 void __iomem *addr;
183
184 switch (pll) {
185 case 0:
186 addr = CKC_BASE + CLKDIVC0_OFFS;
187 reg = __raw_readl(addr);
188 if (reg & CLKDIVC0_P0E)
189 div = (reg >> 24) & 0x3f;
190 break;
191 case 1:
192 addr = CKC_BASE + CLKDIVC0_OFFS;
193 reg = __raw_readl(addr);
194 if (reg & CLKDIVC0_P1E)
195 div = (reg >> 16) & 0x3f;
196 break;
197 case 2:
198 addr = CKC_BASE + CLKDIVC1_OFFS;
199 reg = __raw_readl(addr);
200 if (reg & CLKDIVC1_P2E)
201 div = __raw_readl(addr) & 0x3f;
202 break;
203 }
204 return get_rate_pll(pll) / (div + 1);
205}
206
207static unsigned long get_rate_xi_div(void)
208{
209 unsigned long div = 0;
210 u32 reg = __raw_readl(CKC_BASE + CLKDIVC0_OFFS);
211
212 if (reg & CLKDIVC0_XE)
213 div = (reg >> 8) & 0x3f;
214
215 return xi_rate / (div + 1);
216}
217
218static unsigned long get_rate_xti_div(void)
219{
220 unsigned long div = 0;
221 u32 reg = __raw_readl(CKC_BASE + CLKDIVC0_OFFS);
222
223 if (reg & CLKDIVC0_XTE)
224 div = reg & 0x3f;
225
226 return xti_rate / (div + 1);
227}
228
229static unsigned long root_clk_get_rate(enum root_clks src)
230{
231 switch (src) {
232 case CLK_SRC_PLL0: return get_rate_pll(0);
233 case CLK_SRC_PLL1: return get_rate_pll(1);
234 case CLK_SRC_PLL2: return get_rate_pll(2);
235 case CLK_SRC_PLL0DIV: return get_rate_pll_div(0);
236 case CLK_SRC_PLL1DIV: return get_rate_pll_div(1);
237 case CLK_SRC_PLL2DIV: return get_rate_pll_div(2);
238 case CLK_SRC_XI: return xi_rate;
239 case CLK_SRC_XTI: return xti_rate;
240 case CLK_SRC_XIDIV: return get_rate_xi_div();
241 case CLK_SRC_XTIDIV: return get_rate_xti_div();
242 default: return 0;
243 }
244}
245
246static unsigned long aclk_get_rate(struct clk *clk)
247{
248 u32 reg;
249 unsigned long div;
250 unsigned int src;
251
252 reg = __raw_readl(clk->aclkreg);
253 div = reg & 0x0fff;
254 src = (reg >> ACLK_SEL_SHIFT) & CLK_SRC_MASK;
255 return root_clk_get_rate(src) / (div + 1);
256}
257
258static unsigned long aclk_best_div(struct clk *clk, unsigned long rate)
259{
260 unsigned long div, src, freq, r1, r2;
261
262 src = __raw_readl(clk->aclkreg) >> ACLK_SEL_SHIFT;
263 src &= CLK_SRC_MASK;
264 freq = root_clk_get_rate(src);
265 div = freq / rate + 1;
266 r1 = freq / div;
267 r2 = freq / (div + 1);
268 if (r2 >= rate)
269 return div + 1;
270 if ((rate - r2) < (r1 - rate))
271 return div + 1;
272
273 return div;
274}
275
276static unsigned long aclk_round_rate(struct clk *clk, unsigned long rate)
277{
278 unsigned int src;
279
280 src = __raw_readl(clk->aclkreg) >> ACLK_SEL_SHIFT;
281 src &= CLK_SRC_MASK;
282
283 return root_clk_get_rate(src) / aclk_best_div(clk, rate);
284}
285
286static int aclk_set_rate(struct clk *clk, unsigned long rate)
287{
288 u32 reg;
289
290 reg = __raw_readl(clk->aclkreg) & ~ACLK_DIV_MASK;
291 reg |= aclk_best_div(clk, rate);
292 return 0;
293}
294
295static unsigned long get_rate_sys(struct clk *clk)
296{
297 unsigned int src;
298
299 src = __raw_readl(CKC_BASE + CLKCTRL_OFFS) & CLK_SRC_MASK;
300 return root_clk_get_rate(src);
301}
302
303static unsigned long get_rate_bus(struct clk *clk)
304{
305 unsigned int div;
306
307 div = (__raw_readl(CKC_BASE + CLKCTRL_OFFS) >> 4) & 0xff;
308 return get_rate_sys(clk) / (div + 1);
309}
310
311static unsigned long get_rate_cpu(struct clk *clk)
312{
313 unsigned int reg, div, fsys, fbus;
314
315 fbus = get_rate_bus(clk);
316 reg = __raw_readl(CKC_BASE + CLKCTRL_OFFS);
317 if (reg & (1 << 29))
318 return fbus;
319 fsys = get_rate_sys(clk);
320 div = (reg >> 16) & 0x0f;
321 return fbus + ((fsys - fbus) * (div + 1)) / 16;
322}
323
324static unsigned long get_rate_root(struct clk *clk)
325{
326 return root_clk_get_rate(clk->root_id);
327}
328
329static int aclk_set_parent(struct clk *clock, struct clk *parent)
330{
331 u32 reg;
332
333 if (clock->parent == parent)
334 return 0;
335
336 clock->parent = parent;
337
338 if (!parent)
339 return 0;
340
341 if (parent->root_id == CLK_SRC_NOROOT)
342 return 0;
343 reg = __raw_readl(clock->aclkreg);
344 reg &= ~ACLK_SEL_MASK;
345 reg |= (parent->root_id << ACLK_SEL_SHIFT) & ACLK_SEL_MASK;
346 __raw_writel(reg, clock->aclkreg);
347
348 return 0;
349}
350
351#define DEFINE_ROOT_CLOCK(name, ri, p) \
352 static struct clk name = { \
353 .root_id = ri, \
354 .get_rate = get_rate_root, \
355 .enable = enable_clk, \
356 .disable = disable_clk, \
357 .parent = p, \
358 };
359
360#define DEFINE_SPECIAL_CLOCK(name, gr, p) \
361 static struct clk name = { \
362 .root_id = CLK_SRC_NOROOT, \
363 .get_rate = gr, \
364 .parent = p, \
365 };
366
367#define DEFINE_ACLOCK(name, bc, bs, ar) \
368 static struct clk name = { \
369 .root_id = CLK_SRC_NOROOT, \
370 .bclkctr = bc, \
371 .bclk_shift = bs, \
372 .aclkreg = ar, \
373 .get_rate = aclk_get_rate, \
374 .set_rate = aclk_set_rate, \
375 .round_rate = aclk_round_rate, \
376 .enable = enable_clk, \
377 .disable = disable_clk, \
378 .set_parent = aclk_set_parent, \
379 };
380
381#define DEFINE_BCLOCK(name, bc, bs, gr, p) \
382 static struct clk name = { \
383 .root_id = CLK_SRC_NOROOT, \
384 .bclkctr = bc, \
385 .bclk_shift = bs, \
386 .get_rate = gr, \
387 .enable = enable_clk, \
388 .disable = disable_clk, \
389 .parent = p, \
390 };
391
392DEFINE_ROOT_CLOCK(xi, CLK_SRC_XI, NULL)
393DEFINE_ROOT_CLOCK(xti, CLK_SRC_XTI, NULL)
394DEFINE_ROOT_CLOCK(xidiv, CLK_SRC_XIDIV, &xi)
395DEFINE_ROOT_CLOCK(xtidiv, CLK_SRC_XTIDIV, &xti)
396DEFINE_ROOT_CLOCK(pll0, CLK_SRC_PLL0, &xi)
397DEFINE_ROOT_CLOCK(pll1, CLK_SRC_PLL1, &xi)
398DEFINE_ROOT_CLOCK(pll2, CLK_SRC_PLL2, &xi)
399DEFINE_ROOT_CLOCK(pll0div, CLK_SRC_PLL0DIV, &pll0)
400DEFINE_ROOT_CLOCK(pll1div, CLK_SRC_PLL1DIV, &pll1)
401DEFINE_ROOT_CLOCK(pll2div, CLK_SRC_PLL2DIV, &pll2)
402
403/* The following 3 clocks are special and are initialized explicitly later */
404DEFINE_SPECIAL_CLOCK(sys, get_rate_sys, NULL)
405DEFINE_SPECIAL_CLOCK(bus, get_rate_bus, &sys)
406DEFINE_SPECIAL_CLOCK(cpu, get_rate_cpu, &sys)
407
408DEFINE_ACLOCK(tct, NULL, 0, ACLKTCT)
409DEFINE_ACLOCK(tcx, NULL, 0, ACLKTCX)
410DEFINE_ACLOCK(tcz, NULL, 0, ACLKTCZ)
411DEFINE_ACLOCK(ref, NULL, 0, ACLKREF)
412DEFINE_ACLOCK(uart0, BCLKCTR0, 5, ACLKUART0)
413DEFINE_ACLOCK(uart1, BCLKCTR0, 23, ACLKUART1)
414DEFINE_ACLOCK(uart2, BCLKCTR0, 6, ACLKUART2)
415DEFINE_ACLOCK(uart3, BCLKCTR0, 8, ACLKUART3)
416DEFINE_ACLOCK(uart4, BCLKCTR1, 6, ACLKUART4)
417DEFINE_ACLOCK(i2c, BCLKCTR0, 7, ACLKI2C)
418DEFINE_ACLOCK(adc, BCLKCTR0, 10, ACLKADC)
419DEFINE_ACLOCK(usbh0, BCLKCTR0, 11, ACLKUSBH)
420DEFINE_ACLOCK(lcd, BCLKCTR0, 13, ACLKLCD)
421DEFINE_ACLOCK(sd0, BCLKCTR0, 17, ACLKSDH0)
422DEFINE_ACLOCK(sd1, BCLKCTR1, 5, ACLKSDH1)
423DEFINE_ACLOCK(spi0, BCLKCTR0, 24, ACLKSPI0)
424DEFINE_ACLOCK(spi1, BCLKCTR0, 30, ACLKSPI1)
425DEFINE_ACLOCK(spdif, BCLKCTR1, 2, ACLKSPDIF)
426DEFINE_ACLOCK(c3dec, BCLKCTR1, 9, ACLKC3DEC)
427DEFINE_ACLOCK(can0, BCLKCTR1, 10, ACLKCAN0)
428DEFINE_ACLOCK(can1, BCLKCTR1, 11, ACLKCAN1)
429DEFINE_ACLOCK(gsb0, BCLKCTR1, 13, ACLKGSB0)
430DEFINE_ACLOCK(gsb1, BCLKCTR1, 14, ACLKGSB1)
431DEFINE_ACLOCK(gsb2, BCLKCTR1, 15, ACLKGSB2)
432DEFINE_ACLOCK(gsb3, BCLKCTR1, 16, ACLKGSB3)
433DEFINE_ACLOCK(usbh1, BCLKCTR1, 20, ACLKUSBH)
434
435DEFINE_BCLOCK(dai0, BCLKCTR0, 0, NULL, NULL)
436DEFINE_BCLOCK(pic, BCLKCTR0, 1, NULL, NULL)
437DEFINE_BCLOCK(tc, BCLKCTR0, 2, NULL, NULL)
438DEFINE_BCLOCK(gpio, BCLKCTR0, 3, NULL, NULL)
439DEFINE_BCLOCK(usbd, BCLKCTR0, 4, NULL, NULL)
440DEFINE_BCLOCK(ecc, BCLKCTR0, 9, NULL, NULL)
441DEFINE_BCLOCK(gdma0, BCLKCTR0, 12, NULL, NULL)
442DEFINE_BCLOCK(rtc, BCLKCTR0, 15, NULL, NULL)
443DEFINE_BCLOCK(nfc, BCLKCTR0, 16, NULL, NULL)
444DEFINE_BCLOCK(g2d, BCLKCTR0, 18, NULL, NULL)
445DEFINE_BCLOCK(gdma1, BCLKCTR0, 22, NULL, NULL)
446DEFINE_BCLOCK(mscl, BCLKCTR0, 25, NULL, NULL)
447DEFINE_BCLOCK(bdma, BCLKCTR1, 0, NULL, NULL)
448DEFINE_BCLOCK(adma0, BCLKCTR1, 1, NULL, NULL)
449DEFINE_BCLOCK(scfg, BCLKCTR1, 3, NULL, NULL)
450DEFINE_BCLOCK(cid, BCLKCTR1, 4, NULL, NULL)
451DEFINE_BCLOCK(dai1, BCLKCTR1, 7, NULL, NULL)
452DEFINE_BCLOCK(adma1, BCLKCTR1, 8, NULL, NULL)
453DEFINE_BCLOCK(gps, BCLKCTR1, 12, NULL, NULL)
454DEFINE_BCLOCK(gdma2, BCLKCTR1, 17, NULL, NULL)
455DEFINE_BCLOCK(gdma3, BCLKCTR1, 18, NULL, NULL)
456DEFINE_BCLOCK(ddrc, BCLKCTR1, 19, NULL, NULL)
457
458#define _REGISTER_CLOCK(d, n, c) \
459 { \
460 .dev_id = d, \
461 .con_id = n, \
462 .clk = &c, \
463 },
464
465static struct clk_lookup lookups[] = {
466 _REGISTER_CLOCK(NULL, "bus", bus)
467 _REGISTER_CLOCK(NULL, "cpu", cpu)
468 _REGISTER_CLOCK(NULL, "tct", tct)
469 _REGISTER_CLOCK(NULL, "tcx", tcx)
470 _REGISTER_CLOCK(NULL, "tcz", tcz)
471 _REGISTER_CLOCK(NULL, "ref", ref)
472 _REGISTER_CLOCK(NULL, "dai0", dai0)
473 _REGISTER_CLOCK(NULL, "pic", pic)
474 _REGISTER_CLOCK(NULL, "tc", tc)
475 _REGISTER_CLOCK(NULL, "gpio", gpio)
476 _REGISTER_CLOCK(NULL, "usbd", usbd)
477 _REGISTER_CLOCK("tcc-uart.0", NULL, uart0)
478 _REGISTER_CLOCK("tcc-uart.2", NULL, uart2)
479 _REGISTER_CLOCK("tcc-i2c", NULL, i2c)
480 _REGISTER_CLOCK("tcc-uart.3", NULL, uart3)
481 _REGISTER_CLOCK(NULL, "ecc", ecc)
482 _REGISTER_CLOCK(NULL, "adc", adc)
483 _REGISTER_CLOCK("tcc-usbh.0", "usb", usbh0)
484 _REGISTER_CLOCK(NULL, "gdma0", gdma0)
485 _REGISTER_CLOCK(NULL, "lcd", lcd)
486 _REGISTER_CLOCK(NULL, "rtc", rtc)
487 _REGISTER_CLOCK(NULL, "nfc", nfc)
488 _REGISTER_CLOCK("tcc-mmc.0", NULL, sd0)
489 _REGISTER_CLOCK(NULL, "g2d", g2d)
490 _REGISTER_CLOCK(NULL, "gdma1", gdma1)
491 _REGISTER_CLOCK("tcc-uart.1", NULL, uart1)
492 _REGISTER_CLOCK("tcc-spi.0", NULL, spi0)
493 _REGISTER_CLOCK(NULL, "mscl", mscl)
494 _REGISTER_CLOCK("tcc-spi.1", NULL, spi1)
495 _REGISTER_CLOCK(NULL, "bdma", bdma)
496 _REGISTER_CLOCK(NULL, "adma0", adma0)
497 _REGISTER_CLOCK(NULL, "spdif", spdif)
498 _REGISTER_CLOCK(NULL, "scfg", scfg)
499 _REGISTER_CLOCK(NULL, "cid", cid)
500 _REGISTER_CLOCK("tcc-mmc.1", NULL, sd1)
501 _REGISTER_CLOCK("tcc-uart.4", NULL, uart4)
502 _REGISTER_CLOCK(NULL, "dai1", dai1)
503 _REGISTER_CLOCK(NULL, "adma1", adma1)
504 _REGISTER_CLOCK(NULL, "c3dec", c3dec)
505 _REGISTER_CLOCK("tcc-can.0", NULL, can0)
506 _REGISTER_CLOCK("tcc-can.1", NULL, can1)
507 _REGISTER_CLOCK(NULL, "gps", gps)
508 _REGISTER_CLOCK("tcc-gsb.0", NULL, gsb0)
509 _REGISTER_CLOCK("tcc-gsb.1", NULL, gsb1)
510 _REGISTER_CLOCK("tcc-gsb.2", NULL, gsb2)
511 _REGISTER_CLOCK("tcc-gsb.3", NULL, gsb3)
512 _REGISTER_CLOCK(NULL, "gdma2", gdma2)
513 _REGISTER_CLOCK(NULL, "gdma3", gdma3)
514 _REGISTER_CLOCK(NULL, "ddrc", ddrc)
515 _REGISTER_CLOCK("tcc-usbh.1", "usb", usbh1)
516};
517
518static struct clk *root_clk_by_index(enum root_clks src)
519{
520 switch (src) {
521 case CLK_SRC_PLL0: return &pll0;
522 case CLK_SRC_PLL1: return &pll1;
523 case CLK_SRC_PLL2: return &pll2;
524 case CLK_SRC_PLL0DIV: return &pll0div;
525 case CLK_SRC_PLL1DIV: return &pll1div;
526 case CLK_SRC_PLL2DIV: return &pll2div;
527 case CLK_SRC_XI: return &xi;
528 case CLK_SRC_XTI: return &xti;
529 case CLK_SRC_XIDIV: return &xidiv;
530 case CLK_SRC_XTIDIV: return &xtidiv;
531 default: return NULL;
532 }
533}
534
535static void find_aclk_parent(struct clk *clk)
536{
537 unsigned int src;
538 struct clk *clock;
539
540 if (!clk->aclkreg)
541 return;
542
543 src = __raw_readl(clk->aclkreg) >> ACLK_SEL_SHIFT;
544 src &= CLK_SRC_MASK;
545
546 clock = root_clk_by_index(src);
547 if (!clock)
548 return;
549
550 clk->parent = clock;
551 clk->set_parent = aclk_set_parent;
552}
553
554void __init tcc_clocks_init(unsigned long xi_freq, unsigned long xti_freq)
555{
556 int i;
557
558 xi_rate = xi_freq;
559 xti_rate = xti_freq;
560
561 /* fixup parents and add the clock */
562 for (i = 0; i < ARRAY_SIZE(lookups); i++) {
563 find_aclk_parent(lookups[i].clk);
564 clkdev_add(&lookups[i]);
565 }
566 tcc8k_timer_init(&tcz, (void __iomem *)TIMER_BASE, INT_TC32);
567}
diff --git a/arch/arm/mach-tcc8k/common.h b/arch/arm/mach-tcc8k/common.h
new file mode 100644
index 000000000000..705690add395
--- /dev/null
+++ b/arch/arm/mach-tcc8k/common.h
@@ -0,0 +1,15 @@
1#ifndef MACH_TCC8K_COMMON_H
2#define MACH_TCC8K_COMMON_H
3
4#include <linux/platform_device.h>
5
6extern struct platform_device tcc_nand_device;
7
8struct clk;
9
10extern void tcc_clocks_init(unsigned long xi_freq, unsigned long xti_freq);
11extern void tcc8k_timer_init(struct clk *clock, void __iomem *base, int irq);
12extern void tcc8k_init_irq(void);
13extern void tcc8k_map_common_io(void);
14
15#endif
diff --git a/arch/arm/mach-tcc8k/devices.c b/arch/arm/mach-tcc8k/devices.c
new file mode 100644
index 000000000000..6722ad7c2836
--- /dev/null
+++ b/arch/arm/mach-tcc8k/devices.c
@@ -0,0 +1,239 @@
1/*
2 * linux/arch/arm/mach-tcc8k/devices.c
3 *
4 * Copyright (C) Telechips, Inc.
5 * Copyright (C) 2009 Hans J. Koch <hjk@linutronix.de>
6 *
7 * Licensed under the terms of GPL v2.
8 *
9 */
10
11#include <linux/dma-mapping.h>
12#include <linux/init.h>
13#include <linux/io.h>
14#include <linux/kernel.h>
15#include <linux/module.h>
16
17#include <asm/mach/map.h>
18
19#include <mach/tcc8k-regs.h>
20#include <mach/irqs.h>
21
22#include "common.h"
23
24static u64 tcc8k_dmamask = DMA_BIT_MASK(32);
25
26#ifdef CONFIG_MTD_NAND_TCC
27/* NAND controller */
28static struct resource tcc_nand_resources[] = {
29 {
30 .start = (resource_size_t)NFC_BASE,
31 .end = (resource_size_t)NFC_BASE + 0x7f,
32 .flags = IORESOURCE_MEM,
33 }, {
34 .start = INT_NFC,
35 .end = INT_NFC,
36 .flags = IORESOURCE_IRQ,
37 },
38};
39
40struct platform_device tcc_nand_device = {
41 .name = "tcc_nand",
42 .id = 0,
43 .num_resources = ARRAY_SIZE(tcc_nand_resources),
44 .resource = tcc_nand_resources,
45};
46#endif
47
48#ifdef CONFIG_MMC_TCC8K
49/* MMC controller */
50static struct resource tcc8k_mmc0_resource[] = {
51 {
52 .start = INT_SD0,
53 .end = INT_SD0,
54 .flags = IORESOURCE_IRQ,
55 },
56};
57
58static struct resource tcc8k_mmc1_resource[] = {
59 {
60 .start = INT_SD1,
61 .end = INT_SD1,
62 .flags = IORESOURCE_IRQ,
63 },
64};
65
66struct platform_device tcc8k_mmc0_device = {
67 .name = "tcc-mmc",
68 .id = 0,
69 .num_resources = ARRAY_SIZE(tcc8k_mmc0_resource),
70 .resource = tcc8k_mmc0_resource,
71 .dev = {
72 .dma_mask = &tcc8k_dmamask,
73 .coherent_dma_mask = DMA_BIT_MASK(32),
74 }
75};
76
77struct platform_device tcc8k_mmc1_device = {
78 .name = "tcc-mmc",
79 .id = 1,
80 .num_resources = ARRAY_SIZE(tcc8k_mmc1_resource),
81 .resource = tcc8k_mmc1_resource,
82 .dev = {
83 .dma_mask = &tcc8k_dmamask,
84 .coherent_dma_mask = DMA_BIT_MASK(32),
85 }
86};
87
88static inline void tcc8k_init_mmc(void)
89{
90 u32 reg = __raw_readl(GPIOPS_BASE + GPIOPS_FS1_OFFS);
91
92 reg |= GPIOPS_FS1_SDH0_BITS | GPIOPS_FS1_SDH1_BITS;
93 __raw_writel(reg, GPIOPS_BASE + GPIOPS_FS1_OFFS);
94
95 platform_device_register(&tcc8k_mmc0_device);
96 platform_device_register(&tcc8k_mmc1_device);
97}
98#else
99static inline void tcc8k_init_mmc(void) { }
100#endif
101
102#ifdef CONFIG_USB_OHCI_HCD
103static int tcc8k_ohci_init(struct device *dev)
104{
105 u32 reg;
106
107 /* Use GPIO PK19 as VBUS control output */
108 reg = __raw_readl(GPIOPK_BASE + GPIOPK_FS0_OFFS);
109 reg &= ~(1 << 19);
110 __raw_writel(reg, GPIOPK_BASE + GPIOPK_FS0_OFFS);
111 reg = __raw_readl(GPIOPK_BASE + GPIOPK_FS1_OFFS);
112 reg &= ~(1 << 19);
113 __raw_writel(reg, GPIOPK_BASE + GPIOPK_FS1_OFFS);
114
115 reg = __raw_readl(GPIOPK_BASE + GPIOPK_DOE_OFFS);
116 reg |= (1 << 19);
117 __raw_writel(reg, GPIOPK_BASE + GPIOPK_DOE_OFFS);
118 /* Turn on VBUS */
119 reg = __raw_readl(GPIOPK_BASE + GPIOPK_DAT_OFFS);
120 reg |= (1 << 19);
121 __raw_writel(reg, GPIOPK_BASE + GPIOPK_DAT_OFFS);
122
123 return 0;
124}
125
126static struct resource tcc8k_ohci0_resources[] = {
127 [0] = {
128 .start = (resource_size_t)USBH0_BASE,
129 .end = (resource_size_t)USBH0_BASE + 0x5c,
130 .flags = IORESOURCE_MEM,
131 },
132 [1] = {
133 .start = INT_USBH0,
134 .end = INT_USBH0,
135 .flags = IORESOURCE_IRQ,
136 }
137};
138
139static struct resource tcc8k_ohci1_resources[] = {
140 [0] = {
141 .start = (resource_size_t)USBH1_BASE,
142 .end = (resource_size_t)USBH1_BASE + 0x5c,
143 .flags = IORESOURCE_MEM,
144 },
145 [1] = {
146 .start = INT_USBH1,
147 .end = INT_USBH1,
148 .flags = IORESOURCE_IRQ,
149 }
150};
151
152static struct tccohci_platform_data tcc8k_ohci0_platform_data = {
153 .controller = 0,
154 .port_mode = PMM_PERPORT_MODE,
155 .init = tcc8k_ohci_init,
156};
157
158static struct tccohci_platform_data tcc8k_ohci1_platform_data = {
159 .controller = 1,
160 .port_mode = PMM_PERPORT_MODE,
161 .init = tcc8k_ohci_init,
162};
163
164static struct platform_device ohci0_device = {
165 .name = "tcc-ohci",
166 .id = 0,
167 .dev = {
168 .dma_mask = &tcc8k_dmamask,
169 .coherent_dma_mask = DMA_BIT_MASK(32),
170 .platform_data = &tcc8k_ohci0_platform_data,
171 },
172 .num_resources = ARRAY_SIZE(tcc8k_ohci0_resources),
173 .resource = tcc8k_ohci0_resources,
174};
175
176static struct platform_device ohci1_device = {
177 .name = "tcc-ohci",
178 .id = 1,
179 .dev = {
180 .dma_mask = &tcc8k_dmamask,
181 .coherent_dma_mask = DMA_BIT_MASK(32),
182 .platform_data = &tcc8k_ohci1_platform_data,
183 },
184 .num_resources = ARRAY_SIZE(tcc8k_ohci1_resources),
185 .resource = tcc8k_ohci1_resources,
186};
187
188static void __init tcc8k_init_usbhost(void)
189{
190 platform_device_register(&ohci0_device);
191 platform_device_register(&ohci1_device);
192}
193#else
194static void __init tcc8k_init_usbhost(void) { }
195#endif
196
197/* USB device controller*/
198#ifdef CONFIG_USB_GADGET_TCC8K
199static struct resource udc_resources[] = {
200 [0] = {
201 .start = INT_USBD,
202 .end = INT_USBD,
203 .flags = IORESOURCE_IRQ,
204 },
205 [1] = {
206 .start = INT_UDMA,
207 .end = INT_UDMA,
208 .flags = IORESOURCE_IRQ,
209 },
210};
211
212static struct platform_device tcc8k_udc_device = {
213 .name = "tcc-udc",
214 .id = 0,
215 .resource = udc_resources,
216 .num_resources = ARRAY_SIZE(udc_resources),
217 .dev = {
218 .dma_mask = &tcc8k_dmamask,
219 .coherent_dma_mask = DMA_BIT_MASK(32),
220 },
221};
222
223static void __init tcc8k_init_usb_gadget(void)
224{
225 platform_device_register(&tcc8k_udc_device);
226}
227#else
228static void __init tcc8k_init_usb_gadget(void) { }
229#endif /* CONFIG_USB_GADGET_TCC83X */
230
231static int __init tcc8k_init_devices(void)
232{
233 tcc8k_init_mmc();
234 tcc8k_init_usbhost();
235 tcc8k_init_usb_gadget();
236 return 0;
237}
238
239arch_initcall(tcc8k_init_devices);
diff --git a/arch/arm/mach-tcc8k/io.c b/arch/arm/mach-tcc8k/io.c
new file mode 100644
index 000000000000..9b39d7fa658f
--- /dev/null
+++ b/arch/arm/mach-tcc8k/io.c
@@ -0,0 +1,62 @@
1/*
2 * linux/arch/arm/mach-tcc8k/io.c
3 *
4 * (C) 2009 Hans J. Koch <hjk@linutronix.de>
5 *
6 * derived from TCC83xx io.c
7 * Copyright (C) Telechips, Inc.
8 *
9 * This program is free software; you can redistribute it and/or modify
10 * it under the terms of the GNU General Public License version 2 as
11 * published by the Free Software Foundation.
12 */
13
14#include <linux/init.h>
15#include <linux/io.h>
16#include <linux/kernel.h>
17
18#include <asm/mach/map.h>
19
20#include <mach/tcc8k-regs.h>
21
22/*
23 * The machine specific code may provide the extra mapping besides the
24 * default mapping provided here.
25 */
26static struct map_desc tcc8k_io_desc[] __initdata = {
27 {
28 .virtual = (unsigned long)CS1_BASE_VIRT,
29 .pfn = __phys_to_pfn(CS1_BASE),
30 .length = CS1_SIZE,
31 .type = MT_DEVICE,
32 }, {
33 .virtual = (unsigned long)AHB_PERI_BASE_VIRT,
34 .pfn = __phys_to_pfn(AHB_PERI_BASE),
35 .length = AHB_PERI_SIZE,
36 .type = MT_DEVICE,
37 }, {
38 .virtual = (unsigned long)APB0_PERI_BASE_VIRT,
39 .pfn = __phys_to_pfn(APB0_PERI_BASE),
40 .length = APB0_PERI_SIZE,
41 .type = MT_DEVICE,
42 }, {
43 .virtual = (unsigned long)APB1_PERI_BASE_VIRT,
44 .pfn = __phys_to_pfn(APB1_PERI_BASE),
45 .length = APB1_PERI_SIZE,
46 .type = MT_DEVICE,
47 }, {
48 .virtual = (unsigned long)EXT_MEM_CTRL_BASE_VIRT,
49 .pfn = __phys_to_pfn(EXT_MEM_CTRL_BASE),
50 .length = EXT_MEM_CTRL_SIZE,
51 .type = MT_DEVICE,
52 },
53};
54
55/*
56 * Maps common IO regions for tcc8k.
57 *
58 */
59void __init tcc8k_map_common_io(void)
60{
61 iotable_init(tcc8k_io_desc, ARRAY_SIZE(tcc8k_io_desc));
62}
diff --git a/arch/arm/mach-tcc8k/irq.c b/arch/arm/mach-tcc8k/irq.c
new file mode 100644
index 000000000000..34575c4963f0
--- /dev/null
+++ b/arch/arm/mach-tcc8k/irq.c
@@ -0,0 +1,111 @@
1/*
2 * Copyright (C) Telechips, Inc.
3 * Copyright (C) 2009-2010 Hans J. Koch <hjk@linutronix.de>
4 *
5 * Licensed under the terms of the GNU GPL version 2.
6 */
7
8#include <linux/init.h>
9#include <linux/interrupt.h>
10#include <linux/io.h>
11
12#include <asm/irq.h>
13#include <asm/mach/irq.h>
14
15#include <mach/tcc8k-regs.h>
16#include <mach/irqs.h>
17
18#include "common.h"
19
20/* Disable IRQ */
21static void tcc8000_mask_ack_irq0(unsigned int irq)
22{
23 PIC0_IEN &= ~(1 << irq);
24 PIC0_CREQ |= (1 << irq);
25}
26
27static void tcc8000_mask_ack_irq1(unsigned int irq)
28{
29 PIC1_IEN &= ~(1 << (irq - 32));
30 PIC1_CREQ |= (1 << (irq - 32));
31}
32
33static void tcc8000_mask_irq0(unsigned int irq)
34{
35 PIC0_IEN &= ~(1 << irq);
36}
37
38static void tcc8000_mask_irq1(unsigned int irq)
39{
40 PIC1_IEN &= ~(1 << (irq - 32));
41}
42
43static void tcc8000_ack_irq0(unsigned int irq)
44{
45 PIC0_CREQ |= (1 << irq);
46}
47
48static void tcc8000_ack_irq1(unsigned int irq)
49{
50 PIC1_CREQ |= (1 << (irq - 32));
51}
52
53/* Enable IRQ */
54static void tcc8000_unmask_irq0(unsigned int irq)
55{
56 PIC0_IEN |= (1 << irq);
57 PIC0_INTOEN |= (1 << irq);
58}
59
60static void tcc8000_unmask_irq1(unsigned int irq)
61{
62 PIC1_IEN |= (1 << (irq - 32));
63 PIC1_INTOEN |= (1 << (irq - 32));
64}
65
66static struct irq_chip tcc8000_irq_chip0 = {
67 .name = "tcc_irq0",
68 .mask = tcc8000_mask_irq0,
69 .ack = tcc8000_ack_irq0,
70 .mask_ack = tcc8000_mask_ack_irq0,
71 .unmask = tcc8000_unmask_irq0,
72};
73
74static struct irq_chip tcc8000_irq_chip1 = {
75 .name = "tcc_irq1",
76 .mask = tcc8000_mask_irq1,
77 .ack = tcc8000_ack_irq1,
78 .mask_ack = tcc8000_mask_ack_irq1,
79 .unmask = tcc8000_unmask_irq1,
80};
81
82void __init tcc8k_init_irq(void)
83{
84 int irqno;
85
86 /* Mask and clear all interrupts */
87 PIC0_IEN = 0x00000000;
88 PIC0_CREQ = 0xffffffff;
89 PIC1_IEN = 0x00000000;
90 PIC1_CREQ = 0xffffffff;
91
92 PIC0_MEN0 = 0x00000003;
93 PIC1_MEN1 = 0x00000003;
94 PIC1_MEN = 0x00000003;
95
96 /* let all IRQs be level triggered */
97 PIC0_TMODE = 0xffffffff;
98 PIC1_TMODE = 0xffffffff;
99 /* all IRQs are IRQs (not FIQs) */
100 PIC0_IRQSEL = 0xffffffff;
101 PIC1_IRQSEL = 0xffffffff;
102
103 for (irqno = 0; irqno < NR_IRQS; irqno++) {
104 if (irqno < 32)
105 set_irq_chip(irqno, &tcc8000_irq_chip0);
106 else
107 set_irq_chip(irqno, &tcc8000_irq_chip1);
108 set_irq_handler(irqno, handle_level_irq);
109 set_irq_flags(irqno, IRQF_VALID);
110 }
111}
diff --git a/arch/arm/mach-tcc8k/time.c b/arch/arm/mach-tcc8k/time.c
new file mode 100644
index 000000000000..78d06008841d
--- /dev/null
+++ b/arch/arm/mach-tcc8k/time.c
@@ -0,0 +1,149 @@
1/*
2 * TCC8000 system timer setup
3 *
4 * (C) 2009 Hans J. Koch <hjk@linutronix.de>
5 *
6 * Licensed under the terms of the GPL version 2.
7 *
8 */
9
10#include <linux/clk.h>
11#include <linux/clockchips.h>
12#include <linux/init.h>
13#include <linux/interrupt.h>
14#include <linux/io.h>
15#include <linux/irq.h>
16#include <linux/kernel.h>
17#include <linux/spinlock.h>
18
19#include <asm/mach/time.h>
20
21#include <mach/tcc8k-regs.h>
22#include <mach/irqs.h>
23
24#include "common.h"
25
26static void __iomem *timer_base;
27
28static cycle_t tcc_get_cycles(struct clocksource *cs)
29{
30 return __raw_readl(timer_base + TC32MCNT_OFFS);
31}
32
33static struct clocksource clocksource_tcc = {
34 .name = "tcc_tc32",
35 .rating = 200,
36 .read = tcc_get_cycles,
37 .mask = CLOCKSOURCE_MASK(32),
38 .shift = 28,
39 .flags = CLOCK_SOURCE_IS_CONTINUOUS,
40};
41
42static int tcc_set_next_event(unsigned long evt,
43 struct clock_event_device *unused)
44{
45 unsigned long reg = __raw_readl(timer_base + TC32MCNT_OFFS);
46
47 __raw_writel(reg + evt, timer_base + TC32CMP0_OFFS);
48 return 0;
49}
50
51static void tcc_set_mode(enum clock_event_mode mode,
52 struct clock_event_device *evt)
53{
54 unsigned long tc32irq;
55
56 switch (mode) {
57 case CLOCK_EVT_MODE_ONESHOT:
58 tc32irq = __raw_readl(timer_base + TC32IRQ_OFFS);
59 tc32irq |= TC32IRQ_IRQEN0;
60 __raw_writel(tc32irq, timer_base + TC32IRQ_OFFS);
61 break;
62 case CLOCK_EVT_MODE_SHUTDOWN:
63 case CLOCK_EVT_MODE_UNUSED:
64 tc32irq = __raw_readl(timer_base + TC32IRQ_OFFS);
65 tc32irq &= ~TC32IRQ_IRQEN0;
66 __raw_writel(tc32irq, timer_base + TC32IRQ_OFFS);
67 break;
68 case CLOCK_EVT_MODE_PERIODIC:
69 case CLOCK_EVT_MODE_RESUME:
70 break;
71 }
72}
73
74static irqreturn_t tcc8k_timer_interrupt(int irq, void *dev_id)
75{
76 struct clock_event_device *evt = dev_id;
77
78 /* Acknowledge TC32 interrupt by reading TC32IRQ */
79 __raw_readl(timer_base + TC32IRQ_OFFS);
80
81 evt->event_handler(evt);
82
83 return IRQ_HANDLED;
84}
85
86static struct clock_event_device clockevent_tcc = {
87 .name = "tcc_timer1",
88 .features = CLOCK_EVT_FEAT_ONESHOT,
89 .shift = 32,
90 .set_mode = tcc_set_mode,
91 .set_next_event = tcc_set_next_event,
92 .rating = 200,
93};
94
95static struct irqaction tcc8k_timer_irq = {
96 .name = "TC32_timer",
97 .flags = IRQF_DISABLED | IRQF_TIMER,
98 .handler = tcc8k_timer_interrupt,
99 .dev_id = &clockevent_tcc,
100};
101
102static int __init tcc_clockevent_init(struct clk *clock)
103{
104 unsigned int c = clk_get_rate(clock);
105
106 clocksource_tcc.mult = clocksource_hz2mult(c,
107 clocksource_tcc.shift);
108 clocksource_register(&clocksource_tcc);
109
110 clockevent_tcc.mult = div_sc(c, NSEC_PER_SEC,
111 clockevent_tcc.shift);
112 clockevent_tcc.max_delta_ns =
113 clockevent_delta2ns(0xfffffffe, &clockevent_tcc);
114 clockevent_tcc.min_delta_ns =
115 clockevent_delta2ns(0xff, &clockevent_tcc);
116
117 clockevent_tcc.cpumask = cpumask_of(0);
118
119 clockevents_register_device(&clockevent_tcc);
120
121 return 0;
122}
123
124void __init tcc8k_timer_init(struct clk *clock, void __iomem *base, int irq)
125{
126 u32 reg;
127
128 timer_base = base;
129 tcc8k_timer_irq.irq = irq;
130
131 /* Enable clocks */
132 clk_enable(clock);
133
134 /* Initialize 32-bit timer */
135 reg = __raw_readl(timer_base + TC32EN_OFFS);
136 reg &= ~TC32EN_ENABLE; /* Disable timer */
137 __raw_writel(reg, timer_base + TC32EN_OFFS);
138 /* Free running timer, counting from 0 to 0xffffffff */
139 __raw_writel(0, timer_base + TC32EN_OFFS);
140 __raw_writel(0, timer_base + TC32LDV_OFFS);
141 reg = __raw_readl(timer_base + TC32IRQ_OFFS);
142 reg |= TC32IRQ_IRQEN0; /* irq at match with CMP0 */
143 __raw_writel(reg, timer_base + TC32IRQ_OFFS);
144
145 __raw_writel(TC32EN_ENABLE, timer_base + TC32EN_OFFS);
146
147 tcc_clockevent_init(clock);
148 setup_irq(irq, &tcc8k_timer_irq);
149}
generated by cgit v1.2.2 (git 2.25.0) at 2024-12-18 13:21:33 -0500